:root{--bg:#faf9f5;--bg-rgb:250,249,245;--card:#fff;--border:#e2e8f0;--text:#1e293b;--muted:#475569;--muted2:#64748b;--indigo:#6366f1;--link:#0ea5e9;--input-bg:#f8fafc;--hover:#f1f5f9;--shadow:0 4px 12px rgba(0,0,0,.08);--ok:#059669;--err:#e11d48;--fp-primary:#4f46e5}
[data-theme="dark"]{--bg:#090d16;--bg-rgb:9,13,22;--card:rgba(30,41,59,.78);--border:rgba(99,102,241,.25);--text:#f8fafc;--muted:#94a3b8;--muted2:#64748b;--link:#38bdf8;--input-bg:rgba(15,23,42,.85);--hover:rgba(99,102,241,.05);--shadow:0 20px 40px -20px rgba(0,0,0,.6);--ok:#6ee7b7;--err:#fda4af;--fp-primary:#818cf8}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.6;min-height:100vh}
body.has-sb{padding-left:60px}
a{color:var(--link);text-decoration:none}

/* Thanh điều hướng bên: thu gọn còn icon (60px), rê chuột/focus vào mở rộng ra dạng overlay (không đẩy nội dung). */
.sb{position:fixed;left:0;top:0;bottom:0;width:60px;background:var(--card);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:stretch;padding:14px 0;z-index:50;transition:width .18s ease;overflow:visible}
.sb:hover,.sb:focus-within{width:220px;box-shadow:var(--shadow)}
.sb-home{display:flex;align-items:center;justify-content:center;height:40px;margin:0 8px 14px;border-radius:10px;color:var(--muted)}
.sb-home:hover{color:var(--indigo);background:rgba(99,102,241,.12)}
.sb-nav{display:flex;flex-direction:column;gap:4px;padding:0 8px}
.sb-cat{position:relative}
.sb-item{width:100%;display:flex;align-items:center;gap:10px;padding:10px;border:0;background:transparent;border-radius:10px;color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;overflow:hidden}
.sb-item:hover,.sb-cat.open .sb-item{color:var(--indigo);background:rgba(99,102,241,.12)}
.sb-label{opacity:0;transition:opacity .15s ease}
.sb:hover .sb-label,.sb:focus-within .sb-label{opacity:1}
.sb-chev{margin-left:auto;flex:none;opacity:0;transition:opacity .15s ease,transform .15s ease}
.sb:hover .sb-chev,.sb:focus-within .sb-chev{opacity:1}
.sb-cat.open .sb-chev{transform:rotate(90deg)}
/* Bấm để xổ xuống ngay trong sidebar (kiểu Cloudflare), không phải bay sang bên khi rê chuột. */
.sb-flyout{max-height:0;overflow:hidden;padding:0 8px;transition:max-height .2s ease}
.sb-cat.open .sb-flyout{max-height:320px;padding:4px 8px 8px}
.sb-flyout a{display:flex;align-items:center;padding:8px 10px;border-radius:8px;color:var(--text);font-size:14px;font-weight:600;white-space:nowrap}
.sb-flyout a:hover{background:var(--hover);color:var(--indigo)}
@media(max-width:820px){.sb{display:none}body.has-sb{padding-left:0}}
.nav{position:sticky;top:0;z-index:20;background:rgba(var(--bg-rgb),.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.navwrap{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-weight:800;font-size:20px;background:linear-gradient(135deg,#818cf8,#c084fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.navlinks{display:flex;align-items:center;gap:6px}
.navlinks a,.iconbtn{color:var(--muted);background:transparent;border:0;padding:8px 12px;min-height:36px;display:inline-flex;align-items:center;border-radius:9px;font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.navlinks a:hover,.iconbtn:hover{color:var(--text);background:rgba(99,102,241,.12)}
.ic-sun{display:none}
[data-theme="dark"] .ic-sun{display:block}
[data-theme="dark"] .ic-moon{display:none}
.wrap{max-width:900px;margin:0 auto;padding:20px}
h1{font-size:26px;line-height:1.25;margin:8px 0 4px}
.sub{color:var(--muted);margin:0 0 20px}
.card{background:var(--card);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:20px;padding:26px;margin-bottom:20px;box-shadow:var(--shadow)}
.card:hover{border-color:rgba(99,102,241,.4)}
.drop{border:2px dashed var(--border);text-align:center;padding:36px 20px}
.drop.over{border-color:var(--indigo)}
.drop-title{font-weight:700;font-size:18px;margin:0}
.drop-hint{color:var(--muted2);font-size:14px;margin:6px 0 18px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border:0;border-radius:12px;font:inherit;font-size:14px;font-weight:700;cursor:pointer;color:#fff;background:linear-gradient(135deg,#4f46e5,#7c3aed);box-shadow:0 4px 14px rgba(79,70,229,.4);transition:all .2s ease}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}
.btn:disabled:hover{filter:none;transform:none}
a.btn{color:#fff}
.opt{margin:0 0 20px;color:var(--muted)}
input[type=range]{accent-color:var(--indigo);vertical-align:middle}
.list{list-style:none;margin:0 0 20px;padding:0}
.row{display:flex;gap:12px;justify-content:space-between;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px 16px;margin:8px 0;box-shadow:var(--shadow)}
.row>span:first-child{min-width:0;overflow-wrap:anywhere}
.row .st{flex:none;max-width:60%;color:var(--muted2);font-size:14px;text-align:right}
.row.ok .st a{color:var(--ok);font-weight:700}
.row.err .st{color:var(--err)}
.sec h2{margin:0 0 10px;font-size:18px}
.sec ol{margin:0;padding-left:20px;color:var(--muted)}
details{border:1px solid var(--border);background:var(--input-bg);border-radius:12px;padding:10px 14px;margin:8px 0}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin:8px 0 0}
.links{display:flex;flex-wrap:wrap;gap:8px 18px;padding:0;margin:0;list-style:none}
.links a{display:inline-flex;align-items:center}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;padding:0;margin:0;list-style:none}
.grid a{display:flex;align-items:center;border:1px solid var(--border);border-radius:14px;padding:16px;font-weight:700;color:var(--text);background:var(--input-bg)}
.grid a:hover{border-color:rgba(99,102,241,.4);background:var(--hover)}
/* Ô icon viền vuông kiểu smallpdf.com trước nhãn công cụ. */
.icon-box{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border:1.5px solid var(--border);border-radius:6px;margin-right:8px;flex:none;color:var(--muted);background:var(--card)}
a:hover .icon-box{border-color:var(--indigo);color:var(--indigo)}
.suggest{margin:0 0 20px;text-align:center}
.edit-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:14px;margin:0 0 20px}
.edit-page{background:var(--input-bg);border:1px solid var(--border);border-radius:12px;padding:10px;cursor:grab;position:relative}
.edit-page.dragging{opacity:.4}
.edit-thumb{width:100%;aspect-ratio:3/4;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--card);border-radius:8px}
.edit-thumb img{max-width:100%;max-height:100%;transition:transform .15s ease}
.edit-page-controls{display:flex;justify-content:center;gap:4px;margin-top:8px}
.edit-page-controls button{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:8px;min-width:30px;min-height:30px;font-size:14px;cursor:pointer}
.edit-page-controls button:hover{border-color:var(--indigo)}
.edit-page-num{display:block;text-align:center;color:var(--muted2);font-size:12px;margin-top:6px}
.foot{max-width:900px;margin:0 auto;padding:24px 20px;color:var(--muted2);font-size:14px;border-top:1px solid var(--border)}
.foot-brand{font-weight:800;color:var(--text);margin:0 0 6px}

/* ===== Checkpoint 1: header/hero/uploadzone/trust mới cho trang chủ (public/site.css chỉ THÊM, không sửa gì ở trên). ===== */
.fp-header{position:sticky;top:0;z-index:30;background:rgba(var(--bg-rgb),.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.fp-header-inner{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.fp-logo{font-weight:800;font-size:20px;color:var(--fp-primary)}
.fp-nav{display:flex;align-items:center;gap:2px}
.fp-navitem{position:relative}
.fp-navlink{display:inline-flex;align-items:center;gap:4px;color:var(--muted);background:transparent;border:0;padding:8px 12px;min-height:36px;border-radius:9px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none}
.fp-navlink:hover,.fp-navitem:hover .fp-navlink,.fp-navitem:focus-within .fp-navlink{color:var(--text);background:var(--hover)}
.fp-navchev{transition:transform .15s ease}
.fp-navitem:hover .fp-navchev,.fp-navitem:focus-within .fp-navchev{transform:rotate(90deg)}
.fp-dropdown{position:absolute;top:100%;left:0;margin-top:6px;min-width:210px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .15s ease,transform .15s ease;z-index:40}
.fp-navitem:hover .fp-dropdown,.fp-navitem:focus-within .fp-dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.fp-dropdown a{display:flex;align-items:center;padding:8px 10px;border-radius:8px;color:var(--text);font-size:14px;font-weight:600;white-space:nowrap}
.fp-dropdown a:hover{background:var(--hover);color:var(--fp-primary)}
.fp-header-actions{display:flex;align-items:center;gap:2px}
.fp-lang{color:var(--muted);padding:8px 12px;min-height:36px;display:inline-flex;align-items:center;border-radius:9px;font-size:14px;font-weight:600}
.fp-lang:hover{color:var(--text);background:var(--hover)}
.fp-hamburger{display:none;color:var(--muted);background:transparent;border:0;padding:8px;min-height:36px;min-width:36px;align-items:center;justify-content:center;border-radius:9px;cursor:pointer}
.fp-mobile-menu{display:none}
@media(max-width:820px){
.fp-nav,.fp-lang{display:none}
.fp-hamburger{display:inline-flex}
.fp-mobile-menu{max-width:1080px;margin:0 auto;padding:0 20px 14px;border-top:1px solid var(--border);flex-direction:column;gap:2px}
.fp-mobile-menu.open{display:flex}
.fp-mobile-menu h4{margin:10px 0 2px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted2)}
.fp-mobile-menu a{padding:10px;border-radius:8px;color:var(--text);font-weight:600}
.fp-mobile-menu a:hover{background:var(--hover)}
}
.fp-hero{text-align:center;padding:32px 20px 0;max-width:640px;margin:0 auto}
.fp-hero h1{font-size:30px;line-height:1.25;margin:14px 0 6px}
.fp-upload-wrap{max-width:620px;margin:20px auto 0}
/* Zone thả file: viền nét đứt màu primary + nền tint nhẹ (KHÔNG dùng .card's shadow/blur trắng) — để nó đọc
   như một "khu vực hành động" (drop target), không phải một card nội dung như các khối khác trên trang. */
#fc-drop.fp-upload{border-color:var(--fp-primary);border-width:2px;padding:40px 20px;background:var(--input-bg);box-shadow:none;backdrop-filter:none}
#fc-drop.fp-upload.over{background:var(--hover)}
.fp-upload-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;margin:0 auto 12px;border-radius:12px;background:var(--hover);color:var(--fp-primary)}
.grid a{padding:12px;font-weight:600}

/* ===== Checkpoint 2: refine trang chủ — bỏ card lồng card, thu gọn Trust/FAQ, CTA màu đặc (không gradient). ===== */
/* body.fp-home = mọi trang dùng layoutHome() (trang chủ + template tool page mới) — CTA màu đặc, không gradient. */
body.fp-home .btn{background:var(--fp-primary);box-shadow:0 4px 14px rgba(79,70,229,.35)}
/* Section công cụ để trần (không bọc .card) — tránh khối bên trong khối; tên nhóm thu nhỏ kiểu eyebrow. */
.fp-tools{margin:36px 0 0}
.fp-tools>h2{margin:0 0 16px;font-size:20px}
.fp-tools-group{margin:20px 0 10px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted2)}
.fp-tools-group:first-of-type{margin-top:0}
/* Icon không tự viền riêng trong lưới công cụ — đỡ cảm giác viền-trong-viền, chỉ còn 1 viền/ô. */
.grid .icon-box{border-color:transparent;background:var(--hover)}
.grid a:hover .icon-box{border-color:var(--fp-primary)}
.fp-trust{display:flex;flex-wrap:wrap;justify-content:center;gap:28px;margin:36px 0 0;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.fp-trust-item{display:flex;align-items:center;gap:10px}
.fp-trust-item .icon-box{width:30px;height:30px;color:var(--fp-primary);border-color:var(--fp-primary)}
.fp-trust-item p{margin:0;font-size:14px;font-weight:600;color:var(--text)}
/* FAQ để trần, mỗi câu hỏi cách nhau bằng đường kẻ thay vì khung riêng — đỡ cảm giác "khung trong khung". */
.fp-faq{margin:36px 0 8px}
.fp-faq>h2{margin:0 0 4px;font-size:20px}
.fp-faq details{border:0;border-radius:0;background:transparent;padding:14px 0;margin:0;border-bottom:1px solid var(--border)}
.fp-faq details:last-child{border-bottom:0}
@media(max-width:640px){.fp-trust{flex-direction:column;align-items:flex-start;gap:14px}}

/* Footer: một dòng gọn trên desktop (brand + dòng riêng tư), xuống dòng tự nhiên trên màn hẹp — đỡ cảm giác trống. */
body.fp-home .foot{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px}
body.fp-home .foot-brand{margin:0}
body.fp-home .foot p:not(.foot-brand){margin:0}

/* ===== Checkpoint 3: template trang công cụ mới (thí điểm HEIC → JPG) — cùng ngôn ngữ hình ảnh với trang chủ. ===== */
.fp-toolhead{max-width:640px;margin:0 auto;padding:32px 20px 0}
.fp-toolhead h1{font-size:28px;line-height:1.25;margin:0 0 6px}
/* 1 khối duy nhất đổi nội dung theo trạng thái (chọn file/đang xử lý/xong/lỗi) — tránh card lồng card;
   success/error tô viền màu semantic (--ok/--err) thay vì thêm màu/hiệu ứng mới. */
.fp-panel{border:1px solid var(--border);border-radius:20px;padding:28px 20px;background:var(--input-bg)}
#fc-result.fp-panel{border-color:var(--ok)}
#fc-error.fp-panel{border-color:var(--err)}
.fp-panel-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.fp-panel-icon{width:36px;height:36px;flex:none}
.fp-panel-icon-ok{color:var(--ok);border-color:var(--ok)}
.fp-panel-icon-err{color:var(--err);border-color:var(--err)}
.fp-panel-info{min-width:0;flex:1}
.fp-panel-name{margin:0;font-weight:700;font-size:15px;overflow-wrap:anywhere}
.fp-panel-sub{margin:2px 0 0;font-size:13px;color:var(--muted2)}
/* Nội dung CHÍNH của panel lỗi (không phải caption phụ như .fp-panel-sub) — đủ đậm/rõ để đọc ngay, không dùng đỏ gắt. */
.fp-error-msg{margin:0;flex:1;min-width:0;font-size:15px;font-weight:600;line-height:1.4;color:var(--text);overflow-wrap:anywhere}
.fp-icon-btn{flex:none;border:0;background:transparent;color:var(--muted);width:32px;height:32px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.fp-icon-btn:hover{background:var(--hover);color:var(--text)}
.fp-block{display:flex;width:100%;justify-content:center;margin-top:4px}
.fp-link-btn{display:block;width:100%;text-align:center;margin-top:10px;background:transparent;border:0;color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer;padding:8px}
.fp-link-btn:hover{color:var(--text)}
.fp-status{margin:10px 0 0;text-align:center;color:var(--muted2);font-size:14px}
.fp-steps{margin:0;padding-left:20px;color:var(--muted)}
.fp-steps li{margin:4px 0}
.fp-related{margin:36px 0 8px}

/* ===== Checkpoint 4: biến thể nhiều-file (vd Ảnh sang PDF) — danh sách file trong cùng .fp-panel. ===== */
/* .row đã có border+shadow riêng (site.css gốc); bỏ shadow khi nằm trong .fp-panel để đỡ cảm giác khung-trong-khung. */
.fp-panel .list{margin:0 0 16px}
.fp-panel .row{box-shadow:none}
.fp-panel .row:first-child{margin-top:0}
.fp-panel .row:last-child{margin-bottom:0}

/* ===== Checkpoint 4.6: polish — label lên trên control (đỡ cảm giác form admin), value+đơn vị giữ cùng dòng. ===== */
.fp-panel .opt{margin:0 0 18px}
.fp-panel .opt label{display:block;margin:0 0 8px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted2)}
.fp-panel .opt input[type="number"]{border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:var(--card);color:var(--text);font:inherit;font-size:14px;width:140px}
.fp-panel .opt output{font-weight:700;color:var(--text)}
.fp-related>h2{margin:0 0 12px;font-size:18px}

/* ===== Checkpoint 5: redesign trang chủ — Hero 2 cột + Workspace 6/4 (accordion + dropzone). ===== */
html{scroll-behavior:smooth}
/* Mở rộng vùng chứa trang chủ để hero+workspace không bị kẹp ở 900px của .wrap cũ */
body.fp-home main.wrap{max-width:none;padding:0}
/* Trust/FAQ giữ padding ngang để không đụng mép trên màn rộng */
body.fp-home .fp-trust{max-width:1280px;margin:36px auto 0;padding:20px 32px}
body.fp-home .fp-faq{max-width:1280px;margin:36px auto 8px;padding:0 32px}

/* --- Hero: override layout 1-cột cũ sang 2-cột ngang --- */
.fp-hero{display:flex;align-items:center;justify-content:space-between;gap:48px;max-width:1280px;margin:0 auto;padding:72px 32px 56px;text-align:left}
.fp-hero h1{font-size:clamp(1.9rem,4vw,2.75rem);font-weight:800;line-height:1.15;margin:0 0 14px;letter-spacing:-.02em}
.fp-hero .sub{font-size:1.05rem;color:var(--muted);margin:0 0 28px}
.fp-hero-text{flex:1;min-width:0}
.fp-hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.fp-hero-cta .btn{border-radius:8px;padding:13px 26px;font-size:15px}
/* Nút outline: ghi đè body.fp-home .btn (cùng specificity nhưng rule sau thắng) */
body.fp-home .fp-cta-outline{background:transparent;border:2px solid var(--fp-primary);color:var(--fp-primary);box-shadow:none}
body.fp-home .fp-cta-outline:hover{background:var(--fp-primary);color:#fff;box-shadow:0 4px 14px rgba(79,70,229,.35)}


/* --- Workspace: cột trái chọn công cụ (hẹp), cột phải là bàn làm việc rộng --- */
.fp-workspace{display:grid;grid-template-columns:minmax(230px,300px) 1fr;align-items:start;gap:20px;max-width:1280px;margin:0 auto 64px;padding:0 32px}
.fp-ws-left{display:flex;flex-direction:column;gap:8px}

/* Accordion — overrides general details{} */
.fp-accord{padding:0;margin:0;background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden;box-shadow:0 2px 6px rgba(0,0,0,.03)}
.fp-accord summary{padding:13px 18px;display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:700;gap:8px;border-radius:0;user-select:none}
.fp-accord summary:hover{background:rgba(0,0,0,.02)}
.fp-accord summary::-webkit-details-marker{display:none}
.fp-accord-arrow{display:flex;align-items:center;color:var(--muted2);transition:transform .18s}
.fp-accord[open] .fp-accord-arrow{transform:rotate(90deg)}
.fp-accord ul{list-style:none;margin:0;padding:4px 0 8px;border-top:1px solid var(--border)}
.fp-accord-item{display:flex;align-items:center;gap:10px;padding:9px 18px;font-size:14px;color:var(--text);text-decoration:none;transition:background .12s}
.fp-accord-item:hover{background:rgba(0,0,0,.03);color:var(--text)}
.fp-accord-item.active,.fp-accord-item:hover.active{background:rgba(79,70,229,.08);color:var(--fp-primary);font-weight:600}
.fp-accord-item .icon-box{width:26px;height:26px;flex-shrink:0;border-color:transparent;background:var(--hover)}
.fp-accord-item:hover .icon-box,.fp-accord-item.active .icon-box{border-color:var(--fp-primary);background:rgba(79,70,229,.06);color:var(--fp-primary)}

/* Bàn làm việc cột phải: dropzone -> thanh file -> stage (xem trước + công cụ) -> nút hành động lớn */
.fp-ws-right{display:flex;flex-direction:column;gap:14px;border:1px solid var(--border);border-radius:8px;background:var(--card);box-shadow:0 2px 6px rgba(0,0,0,.03);padding:18px;min-height:480px;min-width:0}
.fp-ws-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;border:2px dashed var(--border);border-radius:8px;background:rgba(79,70,229,.03);padding:36px 24px;text-align:center;transition:background .15s,border-color .15s}
.fp-ws-drop:hover,.fp-ws-drop.over{background:rgba(79,70,229,.07);border-color:var(--fp-primary)}
.fp-ws-drop .fp-upload-icon{margin-bottom:12px;color:var(--fp-primary)}
.fp-ws-drop .drop-title{font-weight:700;font-size:16px;margin:0 0 6px}
.fp-ws-drop .drop-hint{font-size:13px;color:var(--muted2);margin:0 0 16px}
.fp-ws-drop .btn{border-radius:8px;padding:11px 26px;font-size:15px}
.fp-ws-drop.is-compact{flex-direction:row;gap:12px;padding:10px 14px;justify-content:space-between}
.fp-ws-drop.is-compact .fp-upload-icon,.fp-ws-drop.is-compact .drop-title{display:none}
.fp-ws-drop.is-compact .drop-hint{margin:0;font-size:12px}
.fp-ws-drop.is-compact .btn{padding:7px 16px;font-size:13px}
.ws-bar{display:flex;align-items:center;gap:12px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;background:var(--input-bg)}
.ws-bar .icon-box{width:34px;height:34px;flex:none}
.ws-bar-info{flex:1;min-width:0}
.ws-bar-name{margin:0;font-weight:700;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ws-bar-size{margin:0;font-size:12px;color:var(--muted2)}
.ws-hint{margin:auto 0;text-align:center;font-size:14px;color:var(--muted2);line-height:1.6}
.ws-suggest p{font-size:14px;color:var(--muted2);margin:0 0 10px}
.ws-suggest .btn{margin:0 8px 8px 0;border-radius:8px;display:inline-flex;padding:9px 16px;font-size:14px}
.ws-stage{display:flex;flex-direction:column;gap:14px;min-width:0}
.ws-stage:empty{display:none}
.ws-foot{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.ws-msg{margin:0;text-align:center;font-size:14px;color:var(--muted2);overflow-wrap:anywhere}
.ws-msg:empty{display:none}
.ws-msg-ok{color:var(--ok)}
.ws-msg-err{color:var(--err);font-weight:600}
.ws-cta{width:100%;justify-content:center;gap:10px;border-radius:8px;padding:15px 20px;font-size:17px;font-weight:700}
.ws-cta:disabled{opacity:.45;cursor:not-allowed}
.ws-spin{display:inline-flex;animation:ws-rot .8s linear infinite}
.ws-spin[hidden]{display:none}
@keyframes ws-rot{to{transform:rotate(360deg)}}
.ws-ico{display:inline-flex;align-items:center;justify-content:center;flex:none}
.ws-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;flex:none;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--muted);cursor:pointer;padding:0;transition:background .12s,color .12s}
.ws-icon-btn:hover:not(:disabled){background:var(--hover);color:var(--text)}
.ws-icon-btn:disabled{opacity:.35;cursor:default}
.ws-icon-danger:hover:not(:disabled){color:var(--err);border-color:var(--err)}
.ws-flip svg{transform:rotate(180deg)}
.ws-hint-line{margin:0;font-size:13px;color:var(--muted2)}
/* xem trước + tuỳ chọn */
.ws-preview{display:flex;justify-content:center;background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:12px;min-height:60px}
.ws-preview-img{max-width:100%;max-height:300px;border-radius:4px;object-fit:contain}
.ws-field{display:flex;align-items:center;gap:10px;font-size:14px}
.ws-field-stack{flex-direction:column;align-items:stretch;gap:6px}
.ws-field-label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted2);white-space:nowrap}
.ws-field input[type=range]{flex:1;min-width:0}
.ws-field input[type=number],.ws-field select,.ws-text-input{border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:var(--card);color:var(--text);font:inherit;font-size:14px;width:100%;min-width:0}
.ws-field input[type=color]{width:100%;height:36px;padding:2px;border:1px solid var(--border);border-radius:8px;background:var(--card)}
.ws-field-out{font-weight:700;min-width:44px;text-align:right}
.ws-field-row{display:flex;gap:12px}
.ws-field-row .ws-field{flex:1}
.ws-estimate{margin:0;padding:10px 12px;border-radius:8px;background:rgba(79,70,229,.06);color:var(--text);font-size:14px;font-weight:600}
/* danh sách card (gộp PDF / ảnh sang PDF) */
.ws-cards{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.ws-card{display:flex;align-items:center;gap:10px;border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:var(--card)}
.ws-card.dragging{opacity:.4}
.ws-grip{color:var(--muted2);cursor:grab}
.ws-card-thumb{width:44px;height:44px;object-fit:cover;border-radius:6px;border:1px solid var(--border)}
.ws-card-doc{width:44px;height:44px;color:var(--fp-primary);background:var(--hover);border-radius:6px}
.ws-card-info{flex:1;min-width:0}
.ws-card-name{margin:0;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ws-card-size{margin:0;font-size:12px;color:var(--muted2)}
.ws-add-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;align-self:flex-start;border:1px dashed var(--fp-primary);border-radius:8px;background:transparent;color:var(--fp-primary);font:inherit;font-weight:600;font-size:14px;padding:9px 16px;cursor:pointer}
.ws-add-btn:hover{background:rgba(79,70,229,.06)}
/* lưới trang (xoay / sắp xếp / xóa trang) */
.ws-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.ws-page{position:relative;border:1px solid var(--border);border-radius:8px;padding:8px;background:var(--card);cursor:grab}
.ws-page.dragging{opacity:.4}
.ws-page-thumb{display:flex;align-items:center;justify-content:center;aspect-ratio:3/4;overflow:hidden;background:var(--input-bg);border-radius:4px}
.ws-page-thumb img{max-width:100%;max-height:100%;transition:transform .2s}
.ws-page-num{display:block;text-align:center;margin-top:6px;font-size:13px;font-weight:700;color:var(--muted)}
.ws-page-tools{position:absolute;top:10px;right:10px;display:flex;flex-direction:column;gap:6px;opacity:0;transition:opacity .12s}
.ws-page:hover .ws-page-tools,.ws-page:focus-within .ws-page-tools{opacity:1}
@media(hover:none){.ws-page-tools{opacity:1}}
/* ký / chỉnh sửa PDF */
.ws-toolbar{display:flex;flex-wrap:wrap;gap:8px}
.ws-tool-btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text);font:inherit;font-size:14px;font-weight:600;padding:9px 14px;cursor:pointer}
.ws-tool-btn:hover{border-color:var(--fp-primary);color:var(--fp-primary)}
.ws-item{position:absolute;cursor:move;touch-action:none}
.ws-item.is-sel .ws-item-face{border-style:solid}
.ws-item-rm{position:absolute;top:-14px;right:-14px;width:26px;height:26px;border-radius:50%;background:var(--card)}
.ws-item-grip{position:absolute;right:-7px;bottom:-7px;width:14px;height:14px;background:var(--fp-primary);border:2px solid #fff;border-radius:3px;cursor:nwse-resize}
.ws-modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.5);padding:16px}
.ws-modal-box{width:100%;max-width:620px;background:var(--card);color:var(--text);border-radius:12px;padding:20px;box-shadow:var(--shadow)}
.ws-modal-box h3{margin:0 0 12px}
.ws-modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:14px}
.ws-btn-ghost{border:1px solid var(--border);background:transparent;color:var(--text);border-radius:8px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer}
.ws-pad{display:block;width:100%;height:auto;border:1px solid var(--border);border-radius:8px;background:#fff;touch-action:none;cursor:crosshair}
/* mã QR */
.ws-qr{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.ws-qr-controls{display:flex;flex-direction:column;gap:12px}
.ws-qr-text{resize:vertical}
.ws-qr-preview{display:flex;align-items:center;justify-content:center;min-height:200px;background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:12px}
.ws-qr-canvas{width:100%;max-width:280px;height:auto;image-rendering:pixelated;border-radius:4px}

/* Responsive */
@media(max-width:960px){
.fp-hero{gap:32px;padding:56px 24px 40px}
.fp-workspace{padding:0 24px}
}
@media(max-width:768px){
.fp-hero{flex-direction:column;padding:40px 20px 28px;gap:24px;text-align:center}
.fp-hero-cta{justify-content:center}
.fp-workspace{grid-template-columns:1fr;padding:0 20px}
.fp-ws-right{min-height:380px;padding:14px}
.ws-qr{grid-template-columns:1fr}
}
@media(max-width:480px){
.fp-hero-cta{flex-direction:column;align-items:stretch}
.fp-hero-cta .btn{justify-content:center}
}

/* Hiệu ứng chuyển trang mượt: trang cũ lùi lại như tờ giấy dưới, trang mới trượt từ phải vào như tờ giấy đè lên trên.
   Chỉ Chrome/Edge hỗ trợ cross-document view transitions hiện tại; trình duyệt khác bỏ qua, chuyển trang bình thường. */
@view-transition{navigation:auto}
::view-transition-old(root){animation:fp-page-leave .32s cubic-bezier(.4,0,.2,1) both}
::view-transition-new(root){animation:fp-page-enter .38s cubic-bezier(.16,1,.3,1) both}
@keyframes fp-page-leave{to{transform:scale(.97) translateX(-1.5%);opacity:.55;filter:brightness(.94)}}
@keyframes fp-page-enter{from{transform:translateX(3%);opacity:0;box-shadow:-28px 0 48px -16px rgba(0,0,0,.22)}to{transform:translateX(0);opacity:1;box-shadow:none}}

/* Trang Ký PDF (ui-sign.js): dải chọn trang + khung đặt chữ ký kéo-thả trên ảnh trang + bảng vẽ chữ ký */
.sign-pages{display:flex;gap:8px;overflow-x:auto;padding:6px 0;margin-bottom:12px}
.sign-page-thumb{border:2px solid transparent;background:none;padding:2px;border-radius:6px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;flex-shrink:0}
.sign-page-thumb img{width:60px;height:auto;display:block;border:1px solid var(--border);border-radius:4px;background:#fff}
.sign-page-thumb.active{border-color:var(--fp-primary)}
.sign-page-thumb span{font-size:.7rem;color:var(--muted2)}
.sign-stage{max-width:420px;margin:0 0 16px}
.sign-page-wrap{position:relative;width:100%}
.sign-page-wrap img{width:100%;height:auto;display:block;border:1px solid var(--border);border-radius:6px;background:#fff}
.sign-overlay{position:absolute;cursor:move;background-size:contain;background-repeat:no-repeat;background-position:center;border:1px dashed var(--fp-primary);border-radius:2px;touch-action:none}
.sign-pad-wrap{margin:14px 0}
.sign-pad-wrap p{margin:0 0 6px;font-size:.85rem;color:var(--muted)}
.sign-pad{border:1px solid var(--border);border-radius:8px;background:#fff;touch-action:none;cursor:crosshair;display:block;max-width:100%}
.sign-size-row{display:flex;align-items:center;gap:10px;margin:12px 0;font-size:.85rem;color:var(--muted)}

/* display:flex của các khối workspace không được ghi đè thuộc tính hidden */
.fp-workspace [hidden],.ws-modal[hidden]{display:none!important}

/* ===== Editor mode: workspace bung toàn ngang, cột trái thu thành thanh icon, thanh file/công cụ/CTA dính ===== */
.fp-workspace{transition:grid-template-columns .2s ease}
.fp-ws-right{position:relative}
.ws-wide-btn{position:absolute;top:10px;right:10px;z-index:15}
.ws-bar{margin-right:44px}
.fp-workspace.is-wide{max-width:none;padding:0 16px}
.fp-workspace.is-wide .fp-ws-right{min-height:calc(100vh - 90px)}
.fp-workspace.is-wide .ws-bar{position:sticky;top:68px;z-index:12;background:var(--card)}
.fp-workspace.is-wide .ws-toolbar{position:sticky;top:133px;z-index:11;background:var(--card);padding:8px 0}
.fp-workspace.is-wide .ws-foot{position:sticky;bottom:0;z-index:12;background:var(--card);padding:12px 0;border-top:1px solid var(--border)}
.fp-workspace.is-wide .fp-workspace.is-wide .ws-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
@media(min-width:769px){
.fp-workspace.is-wide{grid-template-columns:56px 1fr}
/* thanh trái thu gọn: chỉ 9 icon danh mục, dính theo khi cuộn; rê / bấm icon -> bảng nổi công cụ bên phải (không đẩy bố cục) */
.fp-workspace.is-wide .fp-ws-left{position:sticky;top:calc(var(--hdr) + 8px);align-self:start;z-index:30;width:56px;gap:6px;padding-top:4px}
.fp-workspace.is-wide .fp-accord{position:relative;overflow:visible;border-radius:12px}
.fp-workspace.is-wide .fp-accord summary{justify-content:center;padding:0;height:44px;cursor:pointer}
.fp-workspace.is-wide .fp-accord-head{font-size:0;gap:0}
.fp-workspace.is-wide .fp-accord-head svg{width:20px;height:20px}
.fp-workspace.is-wide .fp-accord-arrow{display:none}
.fp-workspace.is-wide .fp-accord:has(.fp-accord-item.active){border-color:var(--fp-primary);background:rgba(79,70,229,.08)}
.fp-workspace.is-wide .fp-accord ul{display:none;position:absolute;left:100%;top:-6px;width:270px;max-height:min(70vh,560px);overflow-y:auto;margin-left:6px;padding:6px 0;border:1px solid var(--border);border-radius:12px;background:var(--card);box-shadow:var(--shadow)}
.fp-workspace.is-wide .fp-accord ul::before{content:attr(data-label);display:block;padding:6px 16px 8px;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted2)}
.fp-workspace.is-wide .fp-accord:hover ul,.fp-workspace.is-wide .fp-accord:focus-within ul{display:block}
.fp-workspace.is-wide .fp-accord:hover::after{content:"";position:absolute;left:100%;top:0;width:8px;height:100%}
.fp-workspace.is-wide .fp-accord:hover{border-color:var(--fp-primary)}
}
.fp-accord-label{white-space:nowrap}

/* ===== Khung Editor (ws-editor.js): dải trang | viewport | bảng thuộc tính ===== */
.ws-editor{display:flex;flex-direction:column;gap:12px;min-width:0}
.ws-ed-body{display:grid;grid-template-columns:96px minmax(0,1fr) 240px;gap:14px;align-items:start}
.ws-ed-rail{display:flex;flex-direction:column;gap:8px;max-height:calc(100vh - 290px);overflow:auto;padding:2px}
.ws-ed-thumb{border:2px solid transparent;border-radius:6px;padding:3px;background:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;flex:none}
.ws-ed-thumb.active{border-color:var(--fp-primary)}
.ws-ed-thumb-ph{display:block;width:100%;aspect-ratio:3/4;background:var(--input-bg);border:1px solid var(--border);border-radius:3px;overflow:hidden}
.ws-ed-thumb-ph img{display:block;width:100%;height:100%;object-fit:contain}
.ws-ed-thumb-num{font-size:12px;font-weight:700;color:var(--muted2)}
.ws-ed-img{display:block;width:100%;height:auto;border:1px solid var(--border);border-radius:4px;background:#fff}
.ws-ed-inspector{border:1px solid var(--border);border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:10px;font-size:14px;min-width:0}
.ws-ed-title{margin:0;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted2)}
.ws-ed-items{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.ws-ed-item{display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:8px;padding:6px 8px;cursor:pointer}
.ws-ed-item.is-sel{border-color:var(--fp-primary);background:rgba(79,70,229,.06)}
.ws-ed-item-pv{width:44px;height:28px;background:#fff center/contain no-repeat;border:1px solid var(--border);border-radius:4px;flex:none}
.ws-ed-item-name{flex:1;font-weight:600}
@media(max-width:1100px){.ws-ed-body{grid-template-columns:96px minmax(0,1fr)}.ws-ed-inspector{grid-column:1/-1}}
@media(max-width:768px){
.ws-ed-body{grid-template-columns:1fr}
.ws-ed-rail{flex-direction:row;max-height:none;overflow-x:auto}
.ws-ed-thumb{width:64px}
}
.fp-workspace.is-wide .ws-ed-rail{position:sticky;top:190px}
.fp-workspace.is-wide .ws-ed-inspector{position:sticky;top:190px}

/* Viewport có cuộn + zoom: trang rộng theo px do JS đặt, căn giữa khi nhỏ hơn viewport */
.ws-ed-view{display:block;overflow:auto;height:calc(100vh - 290px);min-height:440px;background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:16px;min-width:0;touch-action:none}
.ws-ed-view.is-pannable{cursor:grab}
.ws-ed-view.is-panning{cursor:grabbing;user-select:none}
.ws-ed-page{position:relative;width:100%;margin:0 auto;user-select:none}
.ws-zoom{display:flex;align-items:center;gap:6px;margin-left:auto}
.ws-zoom-select{border:1px solid var(--border);border-radius:8px;padding:6px 8px;background:var(--card);color:var(--text);font:inherit;font-size:13px}

/* ===== Thêm chữ ký: popover, thư viện, modal vẽ/ảnh/chữ ===== */
.ws-pop-wrap{position:relative;display:inline-block}
.ws-tool-primary{background:var(--fp-primary);border-color:var(--fp-primary);color:#fff}
.ws-tool-primary:hover{background:var(--fp-primary);color:#fff;filter:brightness(1.08)}
.ws-pop{position:absolute;top:calc(100% + 6px);left:0;z-index:40;width:300px;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);padding:8px;display:flex;flex-direction:column;gap:4px}
.ws-pop[hidden]{display:none}
.ws-pop-item{display:flex;align-items:center;gap:10px;border:0;background:transparent;color:var(--text);font:inherit;font-size:14px;font-weight:600;padding:9px 10px;border-radius:8px;cursor:pointer;text-align:left}
.ws-pop-item:hover{background:var(--hover)}
.ws-pop-title{margin:8px 10px 2px}
.ws-lib{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:0 4px}
.ws-lib .ws-hint-line{grid-column:1/-1;padding:0 6px}
.ws-lib-item{position:relative;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#fff}
.ws-lib-use{display:block;width:100%;aspect-ratio:5/2;border:0;background:#fff center/contain no-repeat;cursor:pointer}
.ws-lib-del{position:absolute;top:2px;right:2px;width:24px;height:24px;opacity:0}
.ws-lib-item:hover .ws-lib-del,.ws-lib-del:focus{opacity:1}
.ws-check{display:flex;align-items:center;gap:8px;font-size:14px;padding:6px 10px;cursor:pointer}
.ws-pop .ws-hint-line{padding:0 10px 6px}
.ws-modal-form{display:flex;flex-direction:column;gap:12px}
.ws-modal-row{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px}
.ws-modal-row .ws-field{flex:1;min-width:140px}
.ws-inline-link{width:auto;margin:0;padding:6px 8px}
.ws-checker{background:repeating-conic-gradient(#e2e8f0 0 25%,#fff 0 50%) 0 0/16px 16px}
.ws-text-preview{height:auto;max-height:110px;object-fit:contain}

/* ===== Ký PDF đợt 2: mini-toolbar, đường gióng, áp dụng nhiều trang ===== */
.ws-item-bar{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);display:flex;gap:4px;padding:4px;background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);z-index:5;cursor:default}
.ws-item-bar.is-below{bottom:auto;top:calc(100% + 8px)}
.ws-item-bar .ws-icon-btn{width:28px;height:28px}
.ws-guide{position:absolute;background:var(--fp-primary);opacity:.7;pointer-events:none;z-index:4}
.ws-guide-v{top:0;bottom:0;width:1px}
.ws-guide-h{left:0;right:0;height:1px}
.ws-apply-blk{display:flex;flex-direction:column;gap:6px}
.ws-apply-row{display:flex;gap:6px}
.ws-apply-row .ws-text-input{padding:6px 8px;font-size:13px}
.ws-chip{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:999px;padding:6px 12px;font:inherit;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap}
.ws-chip:hover{border-color:var(--fp-primary);color:var(--fp-primary)}

/* Xoay + độ trong suốt: face xoay quanh tâm, hộp .ws-item giữ nguyên */
.ws-item-face{position:absolute;inset:0;border:1px dashed var(--fp-primary);transform-origin:50% 50%}
.ws-item-img{position:absolute;inset:0;background-size:100% 100%;background-repeat:no-repeat;background-position:center}
.ws-item-knob{position:absolute;left:50%;top:-28px;width:14px;height:14px;margin-left:-7px;border-radius:50%;background:#fff;border:2px solid var(--fp-primary);cursor:grab}
.ws-item-knob::after{content:"";position:absolute;left:50%;top:100%;width:1px;height:12px;background:var(--fp-primary);transform:translateX(-50%)}

/* ===== Watermark + đánh số trang: lớp xem trước định vị theo % trang, form ở bảng thuộc tính ===== */
.ws-ed-page{container-type:inline-size}
.ws-stamp{position:absolute;pointer-events:none;z-index:3}
.ws-stamp-img{background-size:contain;background-repeat:no-repeat;background-position:center}
.ws-stamp-num{white-space:nowrap;line-height:1.2}
.ws-ed-section{display:flex;flex-direction:column;gap:8px}
.ws-ed-section[hidden]{display:none}
.ws-chips{display:flex;flex-wrap:wrap;gap:6px}
.ws-chip[aria-pressed=true]{background:var(--fp-primary);border-color:var(--fp-primary);color:#fff}
.ws-ed-inspector .ws-field[hidden]{display:none}

/* ===== Trích xuất ảnh từ PDF: thanh lọc + lưới thẻ ảnh có ô chọn ===== */
.ws-xbar{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px}
.ws-xbar .ws-field{flex:0 1 auto;min-width:140px}
.ws-xgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.ws-xcard{position:relative;display:flex;flex-direction:column;gap:6px;border:2px solid var(--border);border-radius:10px;padding:8px;background:var(--card);cursor:pointer}
.ws-xcard.is-sel{border-color:var(--fp-primary)}
.ws-xcard input{position:absolute;top:12px;left:12px;width:18px;height:18px;z-index:2;accent-color:var(--fp-primary);cursor:pointer}
.ws-xthumb{display:flex;align-items:center;justify-content:center;aspect-ratio:1;border-radius:6px;overflow:hidden}
.ws-xthumb img{max-width:100%;max-height:100%;object-fit:contain}
.ws-xmeta{font-size:12px;font-weight:600;color:var(--muted)}
.ws-xsize{font-size:12px;color:var(--muted2)}

/* Cuộn tới workspace không bị header dính che mất thanh file */
.fp-workspace{scroll-margin-top:72px}

/* ===== Chế độ chỉnh sửa: header gọn, toolbar gộp 1 thanh, CTA thanh đáy 56px, bảng thuộc tính trượt ra ===== */
:root{--canvas-bg:#e9eef5;--hdr:67px}
[data-theme="dark"]{--canvas-bg:#0b1220}
body.is-editing{--hdr:49px}
body.is-editing .fp-header-inner{max-width:none;padding:5px 20px;gap:14px}
body.is-editing .fp-logo{font-size:18px}
.fp-header .ws-bar{flex:1;min-width:0;margin:0;padding:0 0 0 6px;border:0;background:transparent;gap:10px}
.fp-header .ws-bar .icon-box{width:28px;height:28px}
.fp-header .ws-bar-name{font-size:13px}
.fp-header .ws-bar-size{font-size:11px}
.fp-header .ws-bar .ws-icon-btn{width:30px;height:30px}
.fp-ws-left{transition:none}
.fp-workspace.is-editing{padding:0 12px 0 0;gap:12px}
.fp-workspace.is-editing .fp-ws-right{padding:0;gap:0;border:0;box-shadow:none;background:transparent;min-height:calc(100vh - var(--hdr))}
.fp-workspace.is-editing .ws-wide-btn{display:none}
.fp-workspace.is-editing .ws-stage,.fp-workspace.is-editing .ws-editor{gap:0}
.fp-workspace.is-editing .ws-toolbar{position:sticky;top:var(--hdr);z-index:11;gap:8px;align-items:center;flex-wrap:nowrap;overflow-x:auto;padding:8px 12px;background:var(--card);border-bottom:1px solid var(--border)}
.fp-workspace.is-editing .ws-toolbar>*{flex:none}
.fp-workspace.is-editing .ws-ed-body{grid-template-columns:96px minmax(0,1fr);gap:0;position:relative}
.fp-workspace.is-editing .ws-ed-body.pinned{grid-template-columns:96px minmax(0,1fr) var(--insp-w,270px)}
.fp-workspace.is-editing .ws-ed-rail{position:sticky;top:calc(var(--hdr) + var(--tb,54px));max-height:calc(100vh - var(--hdr) - var(--tb,54px));padding:10px 8px;background:var(--card);border-right:1px solid var(--border)}
.fp-workspace.is-editing .ws-ed-view{height:calc(100vh - var(--hdr) - var(--tb,54px));min-height:360px;border:0;border-radius:0;background:var(--canvas-bg);padding:12px}
.ws-ed-body:not(.pinned) .ws-ed-inspector{position:absolute;top:12px;right:16px;width:270px;z-index:6;background:var(--card);box-shadow:var(--shadow);transform:translateX(calc(100% + 32px));opacity:0;pointer-events:none;transition:transform .22s ease,opacity .18s ease}
.ws-ed-body:not(.pinned).inspector-open .ws-ed-inspector{transform:none;opacity:1;pointer-events:auto}
.fp-workspace.is-editing .ws-ed-body.pinned .ws-ed-inspector{position:sticky;top:calc(var(--hdr) + var(--tb,54px));border:0;border-left:1px solid var(--border);border-radius:0;max-height:calc(100vh - var(--hdr) - var(--tb,54px));overflow:auto}
.fp-workspace.is-editing .ws-foot{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:40;flex-direction:column;align-items:center;gap:6px;margin:0;padding:0;max-width:min(720px,calc(100vw - 32px));pointer-events:none}
.fp-workspace.is-editing .ws-msg{text-align:center;font-size:13px;line-height:1.4;padding:8px 16px;border-radius:999px;background:var(--card);border:1px solid var(--border);box-shadow:0 6px 20px rgba(15,23,42,.14)}.fp-workspace.is-editing .ws-msg:empty{display:none}
.fp-workspace.is-editing .ws-foot .ws-toast{pointer-events:auto} /* khung chân không nhận chuột (để khỏi chặn trang), riêng thông báo có nút thì phải bấm được */
.fp-header .ws-actions{flex:none;gap:8px;margin-left:4px}.fp-header .ws-cta{width:auto;height:36px;padding:0 16px;font-size:14px;border-radius:8px;flex:none}body .fp-header .btn.ws-apply{height:36px;padding:0 14px;font-size:14px}
.ws-cta-ico{display:inline-flex}
.ws-cta[aria-busy=true] .ws-cta-ico{display:none}
@media(max-width:1100px){.fp-workspace.is-editing .ws-ed-body.pinned{grid-template-columns:96px minmax(0,1fr)}.fp-workspace.is-editing .ws-ed-body.pinned .ws-ed-inspector{grid-column:1/-1;position:static;border-left:0;border-top:1px solid var(--border);max-height:none}}
body.is-editing .fp-nav{display:none}
@media(max-width:768px){.fp-workspace.is-editing .fp-ws-left{display:none}body.is-editing .fp-header .ws-bar-size{display:none}.fp-workspace.is-editing{padding:0}.fp-workspace.is-editing .ws-ed-body{grid-template-columns:1fr}.fp-workspace.is-editing .ws-ed-rail{position:static;max-height:none;flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--border)}}

/* ===== Cắt ảnh: khung cắt kéo được trên ảnh, làm tối vùng ngoài ===== */
.ws-crop-view{display:flex;align-items:center;justify-content:center}
.ws-crop-stage{position:relative;display:inline-block;line-height:0;user-select:none;touch-action:none}
.ws-crop-canvas{display:block;background:#fff}
.ws-crop-box{position:absolute;cursor:move;border:1.5px solid #fff;background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);background-size:33.333% 33.333%}
.ws-crop-shade{position:absolute;inset:0;background:rgba(15,23,42,.55);pointer-events:none}
.ws-crop-h{position:absolute;width:14px;height:14px;background:#fff;border:2px solid var(--fp-primary);border-radius:3px}
.ws-crop-h-nw{left:-7px;top:-7px;cursor:nwse-resize}
.ws-crop-h-n{left:calc(50% - 7px);top:-7px;cursor:ns-resize}
.ws-crop-h-ne{right:-7px;top:-7px;cursor:nesw-resize}
.ws-crop-h-e{right:-7px;top:calc(50% - 7px);cursor:ew-resize}
.ws-crop-h-se{right:-7px;bottom:-7px;cursor:nwse-resize}
.ws-crop-h-s{left:calc(50% - 7px);bottom:-7px;cursor:ns-resize}
.ws-crop-h-sw{left:-7px;bottom:-7px;cursor:nesw-resize}
.ws-crop-h-w{left:-7px;top:calc(50% - 7px);cursor:ew-resize}
.ws-mirror svg{transform:scaleX(-1)}
.ws-toolbar-sep{width:1px;height:24px;background:var(--border);margin:0 4px}
.fp-workspace.is-editing .ws-ed-body.pinned.no-rail{grid-template-columns:minmax(0,1fr) var(--insp-w,270px)}
/* Sửa PDF: bảng "Mục trên trang" luôn là cột cố định bên phải, không bao giờ nổi đè lên trang (kéo mục sang phải không bị che) */
.fp-workspace.is-editing .ws-ed-body:not(.pinned){grid-template-columns:96px minmax(0,1fr) var(--insp-w,270px)}
.fp-workspace.is-editing .ws-ed-body:not(.pinned).no-rail{grid-template-columns:minmax(0,1fr) var(--insp-w,270px)}
.fp-workspace.is-editing .ws-ed-body:not(.pinned) .ws-ed-inspector{position:sticky;top:calc(var(--hdr) + var(--tb,54px));right:auto;width:auto;transform:none;opacity:1;pointer-events:auto;box-shadow:none;border:0;border-left:1px solid var(--border);border-radius:0;max-height:calc(100vh - var(--hdr) - var(--tb,54px));overflow:auto;transition:none}
@media(max-width:1100px){.fp-workspace.is-editing .ws-ed-body:not(.pinned),.fp-workspace.is-editing .ws-ed-body:not(.pinned).no-rail{grid-template-columns:96px minmax(0,1fr)}.fp-workspace.is-editing .ws-ed-body:not(.pinned).no-rail{grid-template-columns:minmax(0,1fr)}.fp-workspace.is-editing .ws-ed-body:not(.pinned) .ws-ed-inspector{grid-column:1/-1;position:static;border-left:0;border-top:1px solid var(--border);max-height:none}}
div.ws-item-edit{white-space:pre;overflow:hidden}
.ws-insp-grip{display:none}
.fp-workspace.is-editing .ws-ed-body>.ws-insp-grip{display:block;position:absolute;top:0;bottom:0;right:calc(var(--insp-w,270px) - 6px);width:12px;cursor:col-resize;z-index:8;touch-action:none}
.ws-insp-grip::after{content:"";position:absolute;left:4px;top:50%;width:4px;height:48px;margin-top:-24px;border-radius:4px;background:var(--border);transition:background .15s,height .15s}
.ws-insp-grip:hover::after,.ws-insp-grip:focus-visible::after{background:var(--fp-primary);height:64px;margin-top:-32px}
.ws-insp-grip:focus-visible{outline:none}
.fp-workspace.is-editing .ws-ed-body.insp-min{--insp-w:14px}
.fp-workspace.is-editing .ws-ed-body.insp-min .ws-ed-inspector{visibility:hidden;padding:0;border:0;overflow:hidden}
@media(max-width:1100px){.fp-workspace.is-editing .ws-ed-body>.ws-insp-grip{display:none}.fp-workspace.is-editing .ws-ed-body.insp-min .ws-ed-inspector{visibility:visible}}
@media(max-width:1100px){.fp-workspace.is-editing .ws-ed-body.pinned.no-rail{grid-template-columns:minmax(0,1fr)}}

/* ===== Quét mã QR: ảnh + khung khoanh mã, kết quả ở bảng bên ===== */
.ws-scan-stage{position:relative;display:inline-block;line-height:0;max-width:100%}
.ws-scan-img{display:block;max-width:100%;max-height:calc(100vh - 220px);border-radius:4px;background:#fff}
.ws-scan-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.ws-scan-poly{fill:rgba(79,70,229,.12);stroke:var(--fp-primary);stroke-width:3;vector-effect:non-scaling-stroke;stroke-linejoin:round}
.ws-scan-card{display:flex;flex-direction:column;gap:8px;border:1px solid var(--border);border-radius:8px;padding:10px;background:var(--card)}
.ws-scan-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.ws-scan-badge{font-size:12px;font-weight:700;color:var(--fp-primary)}
.ws-scan-text{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.5 ui-monospace,Consolas,monospace;max-height:220px;overflow:auto}
.ws-scan-row{display:flex;flex-direction:column;gap:2px}
.ws-scan-val{font-size:14px;font-weight:600;overflow-wrap:anywhere}
.ws-scan-open{align-self:flex-start;border-radius:8px;padding:8px 14px;font-size:13px}

/* ===== Xóa nền ảnh: canvas kết quả trên nền caro / màu, vòng tròn cọ ===== */
.ws-bg-canvas{display:block;border-radius:4px}
.ws-bg-stage{cursor:default}
.ws-brush-ring{position:absolute;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.7);pointer-events:none}
.ws-brush-ring[hidden]{display:none}

/* ===== Ribbon (Ký PDF): tab + nhóm, icon trên / nhãn dưới. Chỉ là lớp giao diện của các command có sẵn ===== */
.ws-editor.has-ribbon{--tb:108px}
.ws-editor.has-ribbon.rb-collapsed{--tb:34px}
.fp-workspace.is-editing .ws-ribbon-host{position:sticky;top:var(--hdr);z-index:11}
.ws-ribbon{background:var(--card);border-bottom:1px solid var(--border)}
.ws-ribbon.is-collapsed .ws-rb-panel{display:none}
.ws-rb-tabs{display:flex;align-items:flex-end;gap:2px;padding:0 10px;min-height:33px;border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none}
.ws-rb-tab{flex:none;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);font:inherit;font-size:13px;font-weight:600;padding:8px 14px;cursor:pointer;white-space:nowrap}
.ws-rb-tab:hover{color:var(--text)}
.ws-rb-tab[aria-selected=true]{color:var(--fp-primary);border-bottom-color:var(--fp-primary)}
.ws-rb-panel{display:flex;align-items:stretch;padding:4px 8px;min-height:68px;overflow-x:auto}
.ws-rb-panel[hidden]{display:none}
.ws-rb-group{display:flex;flex:none;flex-direction:column;justify-content:space-between;padding:0 10px;border-right:1px solid var(--border)}
.ws-rb-group:last-child{border-right:0}
.ws-rb-items{display:flex;align-items:flex-start;gap:2px;flex:1}
.ws-rb-glabel{padding-top:2px;text-align:center;font-size:10px;letter-spacing:.02em;color:var(--muted2);white-space:nowrap}
.ws-rb-btn{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:54px;padding:5px 6px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--text);font:inherit;cursor:pointer}
.ws-rb-btn:hover:not(:disabled){background:var(--hover)}
.ws-rb-btn[aria-pressed=true]{background:rgba(79,70,229,.1);border-color:rgba(79,70,229,.35);color:var(--fp-primary)}
.ws-rb-btn:disabled{opacity:.4;cursor:default}
.ws-rb-btn .ws-ico svg,.ws-rb-node .ws-tool-btn .ws-ico svg{width:20px;height:20px}
.ws-rb-label{font-size:11px;line-height:1.1;text-align:center;white-space:nowrap}
.ws-rb-node{display:flex;flex-direction:column;align-items:center;gap:3px;padding:5px 6px}
.ws-rb-node .ws-tool-btn{flex-direction:column;gap:3px;min-width:70px;padding:5px 10px;border-radius:6px}
.ws-rb-text{justify-content:center;min-width:74px}
.ws-rb-textval{font-size:12px;font-weight:700;color:var(--muted)}
.ws-ed-view.is-hand{cursor:grab}
.ws-ed-view.is-hand .ws-item{pointer-events:none}
@media(max-width:768px){.ws-rb-tab{padding:10px 12px}.ws-rb-btn{min-width:46px}.ws-rb-label{font-size:10px}.ws-rb-group{padding:0 6px}}
/* Ribbon: nén chiều cao (tab ~33px + nhóm ~66px) để trang PDF không bị ép nhỏ */
.ws-rb-tab{line-height:1.2;padding:7px 14px}
.ws-rb-panel{min-height:0;padding:4px 8px}
.ws-rb-btn{gap:2px;padding:4px 6px}
.ws-rb-btn .ws-ico svg,.ws-rb-node .ws-tool-btn .ws-ico svg{width:18px;height:18px}
.ws-rb-label,.ws-rb-glabel{line-height:1.2}
.ws-rb-node{gap:2px;padding:4px 6px}
.ws-rb-node .ws-tool-btn{white-space:nowrap;line-height:1.2;font-size:11px;font-weight:600;gap:2px;padding:4px 10px}
.ws-rb-node .ws-zoom-select{padding:4px 6px}

/* bảng thuộc tính ẩn trượt ra ngoài phải: cắt phần tràn để trang không cuộn ngang (clip giữ nguyên sticky của dải trang) */
.ws-ed-body{overflow-x:clip}

/* Cảm ứng: tab và nút cao >= 40-44px */
@media(max-width:768px){.ws-rb-tab{padding:11px 12px}.ws-rb-btn{min-height:44px}.ws-editor.has-ribbon{--tb:118px}.ws-editor.has-ribbon.rb-collapsed{--tb:40px}}

.ws-rb-panel,.ws-rb-tabs{scrollbar-width:none}
.ws-rb-panel::-webkit-scrollbar,.ws-rb-tabs::-webkit-scrollbar{display:none}

/* ===== Phiên làm việc: nút Áp dụng + công cụ không nhận file hiện tại thì mờ ===== */
.ws-actions{display:flex;gap:10px}
.ws-actions .ws-cta{flex:1;width:auto}
body .btn.ws-apply{gap:8px;border-radius:8px;padding:0 20px;box-shadow:none;background:transparent;color:var(--fp-primary);border:1.5px solid var(--fp-primary);font-size:15px;font-weight:700;white-space:nowrap}
body .btn.ws-apply:hover:not(:disabled){background:rgba(79,70,229,.08)}
.ws-apply:disabled{opacity:.45;cursor:not-allowed}
.ws-apply[hidden]{display:none}
.fp-accord-item.is-incompatible{opacity:.45}
.ws-toast[hidden]{display:none}

/* ===== Thanh file: nhãn phiên bản + tải + quay về bản trước ===== */
.ws-bar-ver{flex:none;font-size:11px;font-weight:700;color:var(--fp-primary);background:rgba(79,70,229,.1);border-radius:999px;padding:2px 9px;white-space:nowrap}
.ws-bar-ver[hidden]{display:none}
.ws-bar .ws-icon-btn{flex:none}

/* ===== Bộ thành phần thanh công cụ kiểu văn phòng (ws-ui.js) ===== */
.ws-ui-pop{position:fixed;z-index:120;background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);padding:10px;max-width:calc(100vw - 16px)}
.ws-ui-pop.is-sheet{left:0;right:0;bottom:0;top:auto;max-width:none;border-radius:14px 14px 0 0;padding:14px 14px 20px;max-height:70vh;overflow:auto}
.ws-ui-backdrop{position:fixed;inset:0;z-index:119;background:rgba(15,23,42,.45)}
.ws-ui-color{display:flex;flex-direction:column;gap:8px;width:262px;max-width:100%}
.ws-ui-pop.is-sheet .ws-ui-color{width:100%}
.ws-ui-color .ws-ed-title{margin:2px 0 0}
.ws-ui-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:4px}
.ws-ui-recent{display:flex;flex-wrap:wrap;gap:4px}
.ws-ui-recent .ws-ui-sw{width:24px}
.ws-ui-sw{position:relative;aspect-ratio:1;min-width:22px;padding:0;border:1px solid rgba(15,23,42,.18);border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.ws-ui-sw:hover{transform:scale(1.12);z-index:1}
.ws-ui-sw:focus-visible,.ws-ui-none:focus-visible,.ws-ui-toggle:focus-visible,.ws-ui-colorbtn:focus-visible{outline:2px solid var(--fp-primary);outline-offset:1px}
.ws-ui-sw svg{width:14px;height:14px;fill:none;stroke:#0f172a;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.ws-ui-sw.is-dark svg{stroke:#fff}
.ws-ui-none{border:1px solid var(--border);background:transparent;color:var(--text);border-radius:6px;padding:6px 10px;font:inherit;font-size:13px;text-align:left;cursor:pointer}
.ws-ui-none[aria-pressed=true]{border-color:var(--fp-primary);color:var(--fp-primary);font-weight:700}
.ws-ui-custom{display:flex;align-items:center;gap:8px}
.ws-ui-hex{flex:1;min-width:0;border:1px solid var(--border);border-radius:6px;padding:6px 8px;background:var(--card);color:var(--text);font:13px ui-monospace,Consolas,monospace}
.ws-ui-hex.is-bad{border-color:var(--err)}
.ws-ui-native{width:34px;height:30px;padding:1px;border:1px solid var(--border);border-radius:6px;background:var(--card);cursor:pointer}
.ws-ui-colorbtn{display:inline-flex;align-items:center;gap:2px;position:relative;height:32px;padding:0 6px 6px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text);cursor:pointer}
.ws-ui-colorbtn:hover{background:var(--hover)}
.ws-ui-cbar{position:absolute;left:7px;right:17px;bottom:3px;height:4px;border-radius:2px}
.ws-ui-cbar.is-none{background:repeating-linear-gradient(135deg,#ef4444 0 2px,transparent 2px 4px)!important}
.ws-ui-caret{transform:rotate(90deg);opacity:.6}
.ws-ui-caret svg{width:12px;height:12px}
.ws-ui-stepper{display:inline-flex;align-items:center;gap:4px}
.ws-ui-stepper .ws-icon-btn{width:28px;height:28px}
.ws-ui-step-in{width:44px;text-align:center;border:1px solid var(--border);border-radius:6px;padding:5px 2px;background:var(--card);color:var(--text);font:inherit;font-size:14px;font-weight:600}
.ws-ui-unit{font-size:12px;color:var(--muted2)}
.ws-ui-toggle{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:32px;height:32px;padding:0 8px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text);font:inherit;font-size:13px;cursor:pointer}
.ws-ui-toggle:hover{background:var(--hover)}
.ws-ui-toggle[aria-pressed=true]{background:rgba(79,70,229,.12);border-color:rgba(79,70,229,.45);color:var(--fp-primary)}

/* ===== Bộ chọn phông chữ (ws-fonts.js) ===== */
.ws-ui-fontbtn{display:inline-flex;align-items:center;gap:6px;width:100%;min-width:150px;height:32px;padding:0 8px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text);font:inherit;font-size:13px;cursor:pointer;text-align:left}
.ws-ui-fontbtn:hover{background:var(--hover)}
.ws-ui-fontbtn:focus-visible,.ws-ui-frow:focus-visible{outline:2px solid var(--fp-primary);outline-offset:1px}
.ws-ui-fontname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ws-ui-fonts{display:flex;flex-direction:column;gap:8px;width:250px;max-width:100%}
.ws-ui-pop.is-sheet .ws-ui-fonts{width:100%}
.ws-ui-fsearch{border:1px solid var(--border);border-radius:6px;padding:7px 9px;background:var(--card);color:var(--text);font:inherit;font-size:13px}
.ws-ui-flist{max-height:300px;overflow:auto;display:flex;flex-direction:column}
.ws-ui-frow{display:flex;align-items:center;gap:6px;width:100%;padding:6px 6px;border:0;border-radius:6px;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}
.ws-ui-frow:hover{background:var(--hover)}
.ws-ui-frow[aria-selected=true]{color:var(--fp-primary)}
.ws-ui-fchk{flex:none;width:16px;height:16px;display:inline-flex}
.ws-ui-fchk svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.ws-ui-fname{font-size:16px;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ws-ui-fhead{padding:8px 6px 2px;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted2)}
.ws-ui-fempty{padding:12px 6px;font-size:13px;color:var(--muted2)}

/* ===== Đối tượng chữ: ô soạn thảo tại chỗ + nhóm nút ===== */
.ws-item-edit{position:absolute;left:0;top:0;box-sizing:border-box;margin:0;border:0;outline:2px solid var(--fp-primary);resize:none;overflow:hidden;white-space:pre;cursor:text;z-index:2;background-clip:padding-box}
.ws-ui-group{display:inline-flex;gap:4px}

.ws-rb-inline{display:flex;align-items:center;gap:4px;height:34px}
.ws-rb-inline .ws-ui-fontbtn{width:150px;min-width:0}
.ws-item-bar .ws-icon-btn[aria-pressed=true]{background:rgba(79,70,229,.14);color:var(--fp-primary)}

/* ===== Chỉnh sửa trang PDF: chọn nhiều, kéo thả pointer, trang trắng ===== */
.ws-pg-grid{grid-template-columns:repeat(auto-fill,minmax(var(--pw,140px),1fr));user-select:none;-webkit-user-select:none;padding:8px 4px}
.ws-pg-hint{margin:8px 4px 0}
.ws-page{cursor:pointer;touch-action:pan-y}
.ws-page.is-sel{border-color:var(--fp-primary);box-shadow:0 0 0 2px var(--fp-primary)}
.ws-page.is-lifted{opacity:.35}
.ws-page.drop-before::before,.ws-page.drop-after::after{content:"";position:absolute;top:-2px;bottom:-2px;width:4px;border-radius:2px;background:var(--fp-primary);z-index:3}
.ws-page.drop-before::before{left:-9px}
.ws-page.drop-after::after{right:-9px}
.ws-page-check{position:absolute;top:10px;left:10px;width:22px;height:22px;border-radius:50%;background:var(--fp-primary);color:#fff;display:none;align-items:center;justify-content:center}
.ws-page.is-sel .ws-page-check{display:flex}
.ws-page-check svg{width:14px;height:14px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.ws-page-blank{height:100%;max-width:100%;background:#fff;box-shadow:inset 0 0 0 1px var(--border);transition:transform .2s}
.ws-pg-grid.is-dragging,.ws-pg-grid.is-dragging .ws-page{cursor:grabbing}
.ws-pg-ghost{position:fixed;z-index:200;width:70px;pointer-events:none;background:var(--card);border:1px solid var(--fp-primary);border-radius:6px;padding:4px;box-shadow:var(--shadow);opacity:.92}
.ws-pg-ghost img{display:block;width:100%}
.ws-pg-ghost-n{position:absolute;top:-8px;right:-8px;min-width:22px;height:22px;border-radius:11px;background:var(--fp-primary);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 5px}
.ws-rb-btn .is-flip{transform:scaleX(-1)}

/* ===== Hộp thoại lưu nháp (không đóng được ngoài 2 nút) ===== */
.ws-modal-lock{z-index:300}
.ws-draft-box{max-width:460px}
.ws-draft-body{margin:0;line-height:1.5;color:var(--muted)}
.ws-draft-err{margin:10px 0 0;color:var(--err);font-size:13px}
.ws-draft-del{color:var(--err);border-color:var(--err)}

.ws-drafts-btn{margin-top:10px;border:0;background:transparent;color:var(--fp-primary);font:inherit;font-size:14px;font-weight:600;cursor:pointer;text-decoration:underline}
.ws-drafts-btn[hidden]{display:none}
.ws-draft-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;max-height:50vh;overflow:auto}
.ws-draft-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--border);border-radius:8px}
.ws-draft-info{flex:1;min-width:0;display:flex;flex-direction:column}
.ws-draft-name{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ws-draft-meta{font-size:12px;color:var(--muted2)}
.ws-draft-empty{color:var(--muted);padding:8px 0}

.ws-ui-fmore{margin-top:6px;padding:8px;border:1px dashed var(--border);border-radius:6px;background:transparent;color:var(--fp-primary);font:inherit;font-size:13px;font-weight:600;cursor:pointer}
.ws-ui-fmore:disabled{color:var(--muted2);cursor:default}

/* ===== Ribbon: nút có menu thả ===== */
.ws-rb-caret{width:10px;height:10px;margin-left:3px;vertical-align:middle;transform:rotate(90deg)}
.ws-rb-caret svg{width:10px;height:10px}
.ws-ui-menu{display:flex;flex-direction:column;gap:2px;min-width:230px}
.ws-ui-mhead{padding:6px 8px 4px;font-size:12px;font-weight:700;color:var(--muted2)}
.ws-ui-mrow{display:flex;align-items:center;gap:10px;width:100%;padding:8px;border:0;border-radius:6px;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}
.ws-ui-mrow:hover,.ws-ui-mrow:focus-visible{background:var(--hover)}
.ws-ui-mtext{flex:1;display:flex;flex-direction:column;min-width:0}
.ws-ui-mlabel{font-size:14px}
.ws-ui-mdesc{font-size:12px;color:var(--muted2)}
.ws-ui-mkey{font-size:12px;color:var(--muted2)}
.ws-ui-mdot{flex:none;width:12px;height:12px;border-radius:3px}

/* ===== Hình dạng, che vùng, sửa nội dung ===== */
.ws-ed-page.is-drawing{cursor:crosshair}
.ws-ed-page.is-drawing .ws-item{pointer-events:none}
.ws-draw-rub{position:absolute;box-sizing:border-box;border:1.5px dashed var(--fp-primary);background:rgba(79,70,229,.08);pointer-events:none;z-index:5}
.ws-draw-rub.is-line{height:0;border:0;border-top:2px solid var(--fp-primary);background:none;transform-origin:0 0}
.ws-txr-layer{position:absolute;inset:0}
.ws-txr{position:absolute;box-sizing:border-box;padding:0;border:1px dashed transparent;background:transparent;cursor:text}
.ws-txr:hover,.ws-txr:focus-visible{border-color:var(--fp-primary);background:rgba(79,70,229,.12)}

/* ===== Đầu/chân trang, cắt lề, nền trang ===== */
.ws-hf-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.ws-hf-grid .ws-text-input{min-width:0;font-size:12px;padding:6px}
.ws-crop-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:10px}
.ws-page-thumb.has-bg{background:var(--pg-bg)}
.ws-page-thumb.has-bg img{mix-blend-mode:multiply}

/* ===== Bảng, liên kết, dấu trang, biểu mẫu ===== */
.ws-tbp{display:flex;flex-direction:column;gap:6px;padding:2px}
.ws-tbp-label{font-size:12px;font-weight:600;color:var(--muted);padding:2px 4px;background:var(--hover);border-radius:4px}
.ws-tbp-grid{display:grid;grid-template-columns:repeat(10,20px);gap:3px}
.ws-tbp-cell{width:20px;height:20px;padding:0;border:1px solid var(--border);border-radius:2px;background:var(--card);cursor:pointer}
.ws-tbp-cell.is-on{background:rgba(79,70,229,.35);border-color:var(--fp-primary)}
.ws-tb-box{max-width:760px}
.ws-tb-tools{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.ws-tb-wrap{max-height:50vh;overflow:auto}
.ws-tb-grid{border-collapse:collapse}
.ws-tb-grid td{border:1px solid var(--border);padding:0}
.ws-tb-grid tr.is-head .ws-tb-cell{font-weight:700;background:var(--hover)}
.ws-tb-cell{width:120px;border:0;padding:6px;background:var(--card);color:var(--text);font:inherit;font-size:13px}
.ws-lk-target{max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;color:var(--muted)}
.ws-bm-title{flex:1;min-width:0}
.ws-bm-page{width:70px;flex:none}
.ws-err-line{color:var(--err)}
.ws-form-layer{position:absolute;inset:0}
.ws-fm{position:absolute;box-sizing:border-box;margin:0;padding:0 2px;border:1px solid rgba(37,99,235,.55);border-radius:2px;background:rgba(219,234,254,.92);color:#0f172a;font-family:Arial,sans-serif;resize:none}
.ws-fm:focus{outline:2px solid var(--fp-primary);background:#fff}
.ws-fm-box{accent-color:var(--fp-primary)}

/* ===== Trình chỉnh sửa PDF hợp nhất: tab Trang = lưới trang, bảng Hình mờ / Số trang ===== */
.ws-pg-view{display:none}
.ws-editor.is-pages .ws-ed-body{display:none}
.ws-editor.is-pages .ws-pg-view{display:block;min-height:360px;padding:4px 12px 12px}
.fp-workspace.is-editing .ws-editor.is-pages .ws-pg-view{height:calc(100vh - var(--hdr) - var(--tb,54px));overflow:auto;background:var(--canvas-bg)}
.ws-panel-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.ws-panel-head .ws-ed-title{margin:0}
.ws-panel-body{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.ws-panel-off{margin-top:12px;width:100%;color:var(--err);border-color:var(--err)}

/* ===== Chú thích PDF thật: đánh dấu chữ, vẽ tay, ghi chú ===== */
.ws-note-layer,.ws-note-live{position:absolute;inset:0;pointer-events:none;z-index:2}
.ws-note-layer .ws-mk,.ws-note-layer svg,.ws-note-layer .ws-nt{pointer-events:auto}
.ws-ed-page.is-drawing .ws-note-layer *{pointer-events:none}
.ws-mk{position:absolute;box-sizing:border-box;cursor:pointer}
.ws-mk-hl{background:var(--mk);opacity:.45;mix-blend-mode:multiply}
.ws-mk-ul{border-bottom:2px solid var(--mk)}
.ws-mk-so{background:linear-gradient(transparent 44%,var(--mk) 44%,var(--mk) 56%,transparent 56%)}
.ws-mk.is-sel{outline:1.5px dashed var(--fp-primary);outline-offset:1px}
.ws-note-layer svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.ws-note-layer svg polyline{pointer-events:stroke;cursor:pointer}
.ws-note-layer svg.is-sel polyline{filter:drop-shadow(0 0 2px var(--fp-primary))}
.ws-note-live svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.ws-nt{position:absolute;width:24px;height:24px;margin:-12px 0 0 -12px;padding:2px;border:1px solid currentColor;border-radius:4px;background:#fffbeb;cursor:pointer}
.ws-nt svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2}
.ws-nt.is-sel{outline:2px solid var(--fp-primary)}
.ws-am-page{flex:none;min-width:22px;height:22px;border-radius:11px;background:var(--hover);font-size:11px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.ws-ed-item .ws-ed-item-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== Tìm kiếm, trình chiếu ===== */
.ws-find-layer{position:absolute;inset:0;pointer-events:none;z-index:4}
.ws-find-hit{position:absolute;background:rgba(250,204,21,.45);outline:1px solid rgba(202,138,4,.8);mix-blend-mode:multiply}
.ws-find-hit.is-cur{background:rgba(249,115,22,.55);outline:2px solid #ea580c}
.ws-fd-list{max-height:55vh;overflow:auto}
.ws-show{position:fixed;inset:0;z-index:400;background:#000;display:flex;align-items:center;justify-content:center;cursor:pointer}
.ws-show-img{max-width:100vw;max-height:100vh;object-fit:contain;background:#fff}
.ws-show-count{position:fixed;right:16px;bottom:12px;color:#fff;font-size:13px;background:rgba(0,0,0,.5);padding:3px 10px;border-radius:999px}

/* ===== Xem liên tục: các trang xếp dọc, cuộn xuống là tới trang sau ===== */
.ws-ed-view{touch-action:pan-x pan-y;position:relative}
.ws-ed-stack{display:flex;flex-direction:column;align-items:center;gap:16px;min-width:min-content;padding-bottom:24px}
.ws-ed-stack .ws-ed-page{flex:none;margin:0 auto;box-shadow:0 1px 4px rgba(15,23,42,.18)}
.ws-ed-stack .ws-ed-img{background:#fff;width:100%;height:auto}
.ws-ed-thumb-ph{aspect-ratio:auto}
/* Trang chủ: đã vào khu làm việc thì ẩn phần giới thiệu (chỉ hiện lại khi mở trang hoặc bấm logo) */
body.hero-off .fp-hero{display:none}

/* Sửa nội dung: khung nét đứt quanh từng khối chữ như WPS */
.ws-txr{border:1px dashed rgba(100,116,139,.55)!important}
.ws-txr:hover,.ws-txr:focus-visible{border-color:var(--fp-primary)!important;border-style:solid!important}

.ws-rb-mini{display:inline-flex;flex-direction:column;align-items:center;gap:1px}
.ws-rb-mini-label{font-size:10px;color:var(--muted2);line-height:1}
.ws-rb-mini .ws-ui-stepper .ws-icon-btn{width:22px;height:22px}
.ws-rb-mini .ws-ui-step-in{width:38px;padding:2px;font-size:12px}

.ws-fr-opts{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:13px}
.ws-fr-acts{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.ws-fr-acts button{font-size:13px;padding:6px 8px}

/* Ribbon màn hẹp: mép mờ + nút mũi tên khi còn nút bị che */
.ws-ribbon-host{position:relative}
.fp-workspace.is-editing .ws-ribbon-host{position:sticky}
.ws-rb-more{position:absolute;bottom:22px;z-index:3;width:26px;height:44px;border-radius:8px;background:var(--card);border:1px solid var(--border);box-shadow:0 2px 8px rgba(15,23,42,.12)}
.ws-rb-more[hidden]{display:none}
.ws-rb-more.is-l{left:2px;transform:scaleX(-1)}
.ws-rb-more.is-r{right:2px}
.ws-ribbon-host.more-r .ws-rb-panel:not([hidden]){-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 56px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 56px),transparent)}
.ws-ribbon-host.more-l .ws-rb-panel:not([hidden]){-webkit-mask-image:linear-gradient(90deg,transparent,#000 56px);mask-image:linear-gradient(90deg,transparent,#000 56px)}
.ws-ribbon-host.more-l.more-r .ws-rb-panel:not([hidden]){-webkit-mask-image:linear-gradient(90deg,transparent,#000 56px,#000 calc(100% - 56px),transparent);mask-image:linear-gradient(90deg,transparent,#000 56px,#000 calc(100% - 56px),transparent)}
/* Header trình sửa trên màn hẹp: nút Áp dụng / Lưu chỉ còn biểu tượng (nhãn vẫn đọc được bằng trình đọc màn hình) */
@media(max-width:768px){.fp-header .ws-actions{gap:6px;margin-left:0}.fp-header .ws-cta,body .fp-header .btn.ws-apply{padding:0 10px}.fp-header .ws-actions .btn>span:last-child{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}}
@media(max-width:768px){body.is-editing .fp-header .ws-bar .icon-box,body.is-editing #ws-bar-dl,body.is-editing #fc-theme{display:none}body.is-editing .fp-header .ws-bar{flex:1 1 auto;min-width:0}body.is-editing .fp-header .ws-bar>button{flex:none}body.is-editing .fp-header-inner{gap:8px;padding:5px 12px}}

/* Sửa nội dung: vùng ảnh gốc bấm được (nằm dưới vùng chữ) */
.ws-objr{position:absolute;box-sizing:border-box;padding:0;border:1px dashed rgba(14,165,233,.75);background:transparent;cursor:pointer}
.ws-objr:hover,.ws-objr:focus-visible{border:2px solid #0ea5e9;background:rgba(14,165,233,.12)}
/* Cắt ảnh: khung ảnh đầy đủ, ngoài vùng giữ lại tối đi, 8 tay nắm */
.ws-crop-box{position:absolute;z-index:6;touch-action:none;outline:1px dashed rgba(100,116,139,.8)}
.ws-crop-clip{position:absolute;inset:0;overflow:hidden}
.ws-crop-img{position:absolute;inset:0;background-size:100% 100%;background-repeat:no-repeat}
.ws-crop-shade{position:absolute;box-shadow:0 0 0 9999px rgba(15,23,42,.55);pointer-events:none}
.ws-crop-win{position:absolute;box-sizing:border-box;border:2px solid #fff;outline:1px solid var(--fp-primary);cursor:move}
.ws-crop-h{position:absolute;width:12px;height:12px;margin:-7px 0 0 -7px;box-sizing:border-box;background:#fff;border:2px solid var(--fp-primary);border-radius:3px}
.ws-crop-nw{left:0;top:0;cursor:nwse-resize}.ws-crop-n{left:50%;top:0;cursor:ns-resize}.ws-crop-ne{left:100%;top:0;cursor:nesw-resize}.ws-crop-e{left:100%;top:50%;cursor:ew-resize}
.ws-crop-se{left:100%;top:100%;cursor:nwse-resize}.ws-crop-s{left:50%;top:100%;cursor:ns-resize}.ws-crop-sw{left:0;top:100%;cursor:nesw-resize}.ws-crop-w{left:0;top:50%;cursor:ew-resize}
.ws-crop-bar{position:absolute;z-index:7;display:flex;gap:6px;transform:translate(-50%,calc(-100% - 12px));padding:4px;background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);white-space:nowrap}
.ws-crop-btn{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 10px;border:1px solid var(--border);border-radius:6px;background:var(--card);color:var(--text);font:inherit;font-size:13px;font-weight:600;cursor:pointer}
.ws-crop-btn.is-ok{background:var(--fp-primary);border-color:var(--fp-primary);color:#fff}

/* ===== Thương hiệu FileCustom: logo ảnh ở header, dấu logo ép giấy cuối trang ===== */
.fp-logo{display:inline-flex;align-items:center;line-height:0}
.fp-logo-img{display:block;height:44px;width:auto}
body.is-editing .fp-logo-img{height:30px}
.brand{display:inline-flex;align-items:center;line-height:0;background:none;color:inherit}
.brand-img{display:block;height:34px;width:auto}
/* nền tối: logo chữ xám / xanh đậm -> đảo độ sáng, giữ sắc màu (xám -> xám sáng, xanh navy -> xanh nhạt, giọt đỏ vẫn đỏ) */
[data-theme="dark"] .fp-logo-img,[data-theme="dark"] .brand-img{filter:invert(1) hue-rotate(180deg)}
body.fp-home main.wrap{position:relative}
.fp-endmark{pointer-events:none;width:min(340px,78vw);margin:4px auto 0}
.fp-endmark img{display:block;width:100%;height:auto;mix-blend-mode:multiply;-webkit-mask-image:radial-gradient(closest-side,#000 58%,transparent 100%);mask-image:radial-gradient(closest-side,#000 58%,transparent 100%)}
[data-theme="dark"] .fp-endmark img{filter:invert(1) hue-rotate(180deg) saturate(1.15);mix-blend-mode:lighten;opacity:.85}
body.is-editing .fp-endmark{display:none}
@media(min-width:1024px){
body.fp-home .fp-faq{position:relative;z-index:1}
body.fp-home .fp-faq>h2,body.fp-home .fp-faq>details{max-width:62%}
.fp-endmark{position:absolute;z-index:0;right:max(12px,calc(50% - 650px));bottom:-24px;width:min(460px,34vw);margin:0}
}

/* OCR sửa được: nút nhận dạng chữ trên trang scan (chế độ Sửa nội dung) */
.ws-ocr-cta{position:absolute;top:14px;left:50%;transform:translateX(-50%);z-index:3;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:0;border-radius:999px;background:var(--fp-primary);color:#fff;font:inherit;font-size:13px;font-weight:700;box-shadow:0 6px 18px rgba(79,70,229,.35);cursor:pointer;white-space:nowrap;max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis}
.ws-ocr-cta:hover{filter:brightness(1.08)}

/* ===== Menu "Công cụ PDF" nhiều cột theo danh mục (kiểu mega menu) ===== */
.fp-dropdown.fp-mega{display:grid;grid-template-columns:repeat(3,minmax(200px,1fr));gap:4px 18px;padding:16px 18px;min-width:min(760px,92vw);left:50%;transform:translate(-50%,-4px)}
.fp-navitem:hover .fp-dropdown.fp-mega,.fp-navitem:focus-within .fp-dropdown.fp-mega{transform:translate(-50%,0)}
.fp-mega-col{display:flex;flex-direction:column;gap:1px;min-width:0}
.fp-mega-col h5{margin:6px 10px 4px;font-size:12px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:var(--muted2)}
.fp-mega-col a{white-space:normal}
.fp-dropdown a .icon-box{width:24px;height:24px;margin-right:8px;flex:none}
.fp-accord-head{display:inline-flex;align-items:center;gap:8px}
.fp-accord-head svg{color:var(--fp-primary)}
.fp-mobile-menu a .icon-box{width:24px;height:24px;margin-right:8px}

/* ===== Mở khóa PDF ===== */
.ws-unlock{max-width:420px;margin:24px auto;display:flex;flex-direction:column;gap:12px;align-items:stretch;text-align:center}
.ws-unlock-ico{align-self:center;display:inline-flex;width:56px;height:56px;border-radius:16px;align-items:center;justify-content:center;background:rgba(79,70,229,.1);color:var(--fp-primary)}
.ws-unlock-ico svg{width:28px;height:28px}
/* ===== Quét tài liệu ===== */
.ws-scan-bar{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px;margin:8px 0}
.ws-scan-cam{display:inline-flex;align-items:center;gap:8px}
.ws-scan-opt{display:flex;flex-direction:column;gap:4px;min-width:150px}
.ws-select{height:36px;padding:0 8px;border:1px solid var(--border);border-radius:8px;background:var(--input-bg,var(--card));color:var(--text);font:inherit;font-size:14px}
.ws-scan-grid{list-style:none;margin:10px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.ws-scan-page{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;padding:8px;border:1px solid var(--border);border-radius:10px;background:var(--card)}
.ws-scan-img{width:100%;aspect-ratio:3/4;object-fit:contain;background:#fff;border-radius:4px;box-shadow:0 1px 4px rgba(15,23,42,.15)}
.ws-scan-num{position:absolute;top:12px;left:12px;min-width:22px;height:22px;padding:0 6px;border-radius:11px;background:var(--fp-primary);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.ws-scan-tools{display:flex;gap:2px}

/* ===== AI PDF ===== */
.ws-ai{display:flex;flex-direction:column;gap:12px;max-width:820px;margin:8px auto}
.ws-ai-consent{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;max-width:520px;margin:16px auto;padding:20px;border:1px solid var(--border);border-radius:14px;background:var(--card)}
.ws-ai-consent p{margin:0;line-height:1.55}
.ws-ai-out{display:flex;flex-direction:column;gap:10px}
.ws-ai-out:empty{display:none}
.ws-ai-text{white-space:pre-wrap;line-height:1.6;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:var(--card);overflow-wrap:anywhere}
.ws-ai-tools{display:flex;flex-wrap:wrap;gap:8px}
.ws-ai-msg{display:flex;flex-direction:column;gap:4px;max-width:92%}
.ws-ai-msg.ws-ai-q{align-self:flex-end}
.ws-ai-msg.ws-ai-q .ws-ai-text{background:rgba(79,70,229,.08);border-color:rgba(79,70,229,.25)}
.ws-ai-who{font-size:12px;font-weight:700;color:var(--muted2)}
.ws-ai-msg.ws-ai-q .ws-ai-who{align-self:flex-end}
.ws-ai-input{width:100%;min-height:56px;resize:vertical;font:inherit}
.ws-ai-quiz{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:14px}
.ws-ai-q{margin:0 0 6px;font-weight:600;line-height:1.5}
.ws-ai-opts{margin:0 0 6px;padding-left:22px;line-height:1.6}
.ws-ai-ans summary{cursor:pointer;color:var(--fp-primary);font-size:14px}
.ws-ai-ans p{margin:6px 0 0;line-height:1.5}

/* ===== Chân trang: danh bạ công cụ + thương hiệu + cam kết ===== */
.ft{border-top:1px solid var(--border);background:var(--card);color:var(--text);margin-top:32px}
.ft a{color:inherit;text-decoration:none}
.ft a:hover{color:var(--fp-primary)}
.ft-dir{max-width:1280px;margin:0 auto;padding:36px 20px 8px}
.ft-title{font-size:18px;margin:0 0 18px}
.ft-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:22px 24px}
.ft-col h3,.ft-links h3{margin:0 0 8px;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted2)}
.ft ul{list-style:none;margin:0;padding:0}
.ft-col li a{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:14px;line-height:1.35}
.ft-col li svg{flex:none;color:var(--fp-primary)}
.ft-bottom{max-width:1280px;margin:0 auto;padding:28px 20px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;border-top:1px solid var(--border)}
.ft-logo{display:block;height:60px;width:auto;margin-bottom:12px}
[data-theme="dark"] .ft-logo{filter:invert(1) hue-rotate(180deg)}
.ft-brand p{margin:0 0 12px;font-size:15px;color:var(--muted2);max-width:420px}
.ft-trust li{display:flex;align-items:center;gap:8px;font-size:13px;padding:3px 0;color:var(--muted2)}
.ft-trust svg{flex:none;color:#16a34a}
.ft-links li a{display:block;padding:4px 0;font-size:14px}
.ft-legal{max-width:1280px;margin:0 auto;padding:14px 20px 24px;border-top:1px solid var(--border);font-size:12.5px;color:var(--muted2);display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 24px}
.ft-legal p{margin:0}
@media (max-width:820px){.ft-bottom{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}
@media (max-width:480px){.ft-grid{grid-template-columns:1fr 1fr;gap:18px 14px}.ft-col li a{font-size:13px}}

/* ===== Trang thông tin (giới thiệu, liên hệ, chính sách, điều khoản) ===== */
.info-page{max-width:760px;margin:32px auto 8px;padding:0 4px;line-height:1.7}
.info-page h1{font-size:32px;margin:0 0 8px}
.info-page h2{font-size:19px;margin:26px 0 6px}
.info-page p{margin:0 0 10px;color:var(--text)}
.info-page .info-lead{color:var(--muted2);font-size:17px}
.info-page .info-updated{margin-top:28px;font-size:13px;color:var(--muted2)}
.ft-bottom{grid-template-columns:2fr 1fr 1fr 1fr 1fr}
/* logo xoắn dập chìm trên nền chân trang (ảnh dựng sẵn: scripts/mk_emboss.py) */
.ft-bottom{position:relative}
.ft-bottom>*{position:relative;z-index:1}
.ft-bottom::after{content:"";position:absolute;right:3%;top:50%;transform:translateY(-50%);width:clamp(200px,24vw,360px);aspect-ratio:1;background:url(/brand/emboss.webp) center/contain no-repeat;pointer-events:none;z-index:0}
[data-theme="dark"] .ft-bottom::after{opacity:.45}
@media (max-width:820px){.ft-bottom::after{width:200px;right:0;top:auto;bottom:8px;transform:none;opacity:.6}}

/* thanh công cụ trình sửa khi cuộn: nằm trên trang PDF + khung chữ sửa được (nhốt z-index của trang vào lớp riêng) */
.fp-workspace.is-editing .ws-ribbon-host{z-index:25;background:var(--card)}
.fp-workspace.is-editing .ws-ed-view,.fp-workspace.is-editing .ws-ed-stack{isolation:isolate}
.fp-workspace.is-editing .ws-ed-rail{z-index:5}

/* lớp xóa chữ cũ khi sửa khối chữ: không bấm / kéo được, không viền */
.ws-item.ws-item-auto{pointer-events:none}
.ws-item.ws-item-auto .ws-item-face{border:0}

/* ===== Chat với AI File | custom ===== */
.ws-ai-chat{max-width:860px;display:flex;flex-direction:column;gap:10px}
.ws-chat-log{display:flex;flex-direction:column;gap:14px;min-height:320px;max-height:min(62vh,640px);overflow-y:auto;padding:16px;border:1px solid var(--border);border-radius:16px;background:var(--card)}
.ws-chat-empty{margin:auto;text-align:center;max-width:520px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px}
.ws-chat-empty h3{margin:4px 0 0;font-size:20px}
.ws-chat-empty p{margin:0;color:var(--muted2);line-height:1.5}
.ws-chat-sug{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:10px}
.ws-chat-chip{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:999px;padding:8px 14px;font:inherit;font-size:13.5px;cursor:pointer;transition:border-color .15s,background .15s}
.ws-chat-chip:hover{border-color:var(--fp-primary);background:rgba(79,70,229,.06)}
.ws-chat-msg{display:flex;gap:10px;align-items:flex-start;max-width:100%}
.ws-chat-msg.is-user{justify-content:flex-end}
.ws-chat-msg.is-user .ws-chat-text{background:var(--fp-primary);color:#fff;border-radius:18px 18px 4px 18px;padding:10px 14px;max-width:min(78%,560px);white-space:pre-wrap;overflow-wrap:anywhere}
.ws-chat-av{flex:none;width:30px;height:30px;padding:6px;border-radius:50%;background:rgba(79,70,229,.1);color:var(--fp-primary)}
.ws-chat-body{min-width:0;flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.ws-chat-msg.is-ai .ws-chat-text{line-height:1.65;overflow-wrap:anywhere;max-width:100%}
.ws-chat-text p,.ws-ai-md p{margin:0 0 8px}
.ws-chat-text ul,.ws-chat-text ol,.ws-ai-md ul,.ws-ai-md ol{margin:0 0 8px;padding-left:22px}
.ws-chat-text li,.ws-ai-md li{margin:2px 0}
.ws-chat-text h4,.ws-ai-md h4{margin:10px 0 6px;font-size:15px}
.ws-chat-text>:last-child{margin-bottom:0}
.ws-chat-msg.is-err .ws-chat-text{color:#dc2626}
.ws-chat-acts{display:flex;gap:4px;opacity:.7}
.ws-chat-acts:hover{opacity:1}
.ws-chat-bar{display:flex;align-items:flex-end;gap:8px;padding:8px 8px 8px 14px;border:1px solid var(--border);border-radius:22px;background:var(--card);box-shadow:0 2px 10px rgba(15,23,42,.06)}
.ws-chat-bar:focus-within{border-color:var(--fp-primary)}
.ws-chat-input{flex:1;border:0;outline:0;resize:none;background:transparent;color:var(--text);font:inherit;font-size:15px;line-height:1.5;padding:6px 0;max-height:160px}
.ws-chat-send{flex:none;width:38px;height:38px;border:0;border-radius:50%;background:var(--fp-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.ws-chat-send:disabled{opacity:.35;cursor:default}
.ws-chat-send.is-stop{background:var(--text)}
.ws-chat-hint{margin:0;text-align:center;font-size:12px;color:var(--muted2)}
.ws-typing{display:inline-flex;gap:4px;padding:6px 0}
.ws-typing i{width:7px;height:7px;border-radius:50%;background:var(--muted2);animation:wsTyping 1.2s infinite ease-in-out}
.ws-typing i:nth-child(2){animation-delay:.15s}
.ws-typing i:nth-child(3){animation-delay:.3s}
@keyframes wsTyping{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}
.ws-caret{display:inline-block;width:8px;height:16px;margin-left:2px;vertical-align:-2px;background:var(--fp-primary);animation:wsBlink 1s steps(2) infinite}
@keyframes wsBlink{50%{opacity:0}}
.ws-ai-md{white-space:normal}
.ws-ai-prog{height:4px;border-radius:4px;background:var(--border);overflow:hidden}
.ws-ai-prog span{display:block;height:100%;width:3%;background:var(--fp-primary);transition:width .3s}
/* ===== Câu hỏi trắc nghiệm tương tác ===== */
.ws-quiz-score{position:sticky;top:calc(var(--hdr, 60px) + 8px);z-index:2;align-self:flex-start;padding:6px 12px;border-radius:999px;background:rgba(79,70,229,.1);color:var(--fp-primary);font-weight:700;font-size:14px}
.ws-quiz-score.is-done{background:rgba(22,163,74,.12);color:#15803d}
.ws-quiz{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:18px}
.ws-quiz-text{margin:0 0 8px;font-weight:600;line-height:1.5}
.ws-quiz-opts{display:grid;gap:6px}
.ws-quiz-opt{display:flex;align-items:flex-start;gap:10px;text-align:left;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);font:inherit;font-size:14px;line-height:1.45;cursor:pointer}
.ws-quiz-opt b{flex:none;width:22px;height:22px;border-radius:50%;background:var(--hover);display:inline-flex;align-items:center;justify-content:center;font-size:12px}
.ws-quiz-opt:hover{border-color:var(--fp-primary)}
.ws-quiz-q.is-answered .ws-quiz-opt{cursor:default}
.ws-quiz-opt.is-right{border-color:#16a34a;background:rgba(22,163,74,.08)}
.ws-quiz-opt.is-right b{background:#16a34a;color:#fff}
.ws-quiz-opt.is-wrong{border-color:#dc2626;background:rgba(220,38,38,.07)}
.ws-quiz-opt.is-wrong b{background:#dc2626;color:#fff}
.ws-quiz-exp{margin:8px 0 0;font-size:14px;line-height:1.5}
.ws-quiz-exp.is-right{color:#15803d}
.ws-quiz-exp.is-wrong{color:#b91c1c}

/* ===== Quét tài liệu: khung máy ảnh chụp liên tiếp + chỉnh sáng / tương phản ===== */
.ws-scan-adj{align-items:flex-end}
.ws-scan-slider{min-width:190px}
.ws-range{width:100%;accent-color:var(--fp-primary)}
.ws-scan-restore{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:10px 14px;border:1px solid rgba(79,70,229,.3);border-radius:12px;background:rgba(79,70,229,.06)}
.ws-scan-restore span{flex:1;min-width:200px}
.ws-scan-note{font-size:12.5px}
body.ws-cam-open{overflow:hidden}
.ws-cam{position:fixed;inset:0;z-index:500;background:#000;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ws-cam-video{width:100%;height:100%;object-fit:contain;background:#000}
.ws-cam-frame{position:absolute;inset:8% 10% 18%;border:2px dashed rgba(255,255,255,.55);border-radius:10px;pointer-events:none}
.ws-cam-tip{position:absolute;top:14px;left:60px;right:60px;margin:0;text-align:center;color:#fff;font-size:14px;text-shadow:0 1px 3px rgba(0,0,0,.8)}
.ws-cam-bar{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px calc(18px + env(safe-area-inset-bottom));background:linear-gradient(transparent,rgba(0,0,0,.7))}
.ws-cam-last{width:52px;height:68px;object-fit:cover;border-radius:6px;border:2px solid #fff;background:#222}
.ws-cam-bar>.ws-cam-last[hidden]{display:block;visibility:hidden}
.ws-cam-shutter{width:74px;height:74px;border-radius:50%;border:5px solid #fff;background:rgba(255,255,255,.35);cursor:pointer;flex:none}
.ws-cam-shutter:active{background:#fff}
.ws-cam-done{min-width:96px}
.ws-cam-x{position:absolute;top:10px;right:10px;color:#fff;background:rgba(0,0,0,.4)}
.ws-cam.is-flash::after{content:"";position:absolute;inset:0;background:#fff;animation:wsFlash .25s ease-out forwards;pointer-events:none}
@keyframes wsFlash{from{opacity:.85}to{opacity:0}}
@media (max-width:600px){.ws-scan-bar{display:grid;grid-template-columns:1fr 1fr;gap:10px}.ws-scan-cam{grid-column:1/-1;justify-content:center;padding:14px}.ws-scan-bar .ws-scan-opt{min-width:0}.ws-scan-slider{grid-column:1/-1}.ws-scan-bar .ws-add-btn{align-self:end;justify-content:center}.ws-scan-opt .ws-field-label{text-align:left}}
@media (max-width:600px){.ws-scan-bar .ws-scan-opt{align-items:stretch}}

.ws-scan-warn{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border:1px solid #f59e0b;border-radius:12px;background:rgba(245,158,11,.1);color:var(--text)}
.ws-scan-warn svg{flex:none;color:#d97706;margin-top:2px}
.ws-scan-warn p{margin:4px 0 0;font-size:13.5px;color:var(--muted2);line-height:1.5}

/* ===== Bảng tính online ===== */
.sh{--sh-grid:#e2e8f0;--sh-font:Calibri,Carlito,Arial,sans-serif;--sh-z:1;display:flex;flex-direction:column;height:calc(100vh - var(--hdr, 60px) - 6px);min-height:460px;background:var(--card)}
.sh-start{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;max-width:560px;margin:20px auto}
.sh-fx{display:flex;align-items:center;gap:6px;padding:6px 8px;border-bottom:1px solid var(--border);background:var(--card)}
.sh-name{width:96px;height:30px;border:1px solid var(--border);border-radius:6px;padding:0 8px;font:inherit;font-size:13px;background:var(--bg);color:var(--text)}
.sh-fx-ico{font-style:italic;font-weight:700;color:var(--muted2);padding:0 4px;font-family:Georgia,serif}
.sh-fx-input{flex:1;height:30px;border:1px solid var(--border);border-radius:6px;padding:0 8px;font:inherit;font-size:14px;background:var(--bg);color:var(--text)}
.sh-warn{padding:8px 12px;background:rgba(245,158,11,.12);border-bottom:1px solid #f59e0b;font-size:13.5px}
.sh-find{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:6px 8px;border-bottom:1px solid var(--border);background:var(--card)}
.sh-find .ws-text-input{height:32px;width:200px}
.sh-find-info{font-size:13px;color:var(--muted2)}
.sh-grid{position:relative;flex:1;min-height:0;overflow:hidden;background:#fff;color:#000;border-top:1px solid var(--border);user-select:none;-webkit-user-select:none}
.sh-corner{position:absolute;left:0;top:0;width:46px;height:24px;background:#f1f5f9;border-right:1px solid #cbd5e1;border-bottom:1px solid #cbd5e1;z-index:6;cursor:cell}
.sh-colhead{position:absolute;left:46px;top:0;right:0;height:24px;overflow:hidden;background:#f1f5f9;border-bottom:1px solid #cbd5e1;z-index:5}
.sh-rowhead{position:absolute;left:0;top:24px;bottom:0;width:46px;overflow:hidden;background:#f1f5f9;border-right:1px solid #cbd5e1;z-index:5}
.sh-hc,.sh-hr{position:absolute;display:flex;align-items:center;justify-content:center;font:12px/1 system-ui,sans-serif;color:#475569;border-right:1px solid #d7dee8;border-bottom:1px solid #d7dee8;box-sizing:border-box;cursor:pointer}
.sh-hc{top:0;height:24px}
.sh-hr{left:0;width:46px}
.sh-hc.is-on,.sh-hr.is-on{background:#e0e7ff;color:#4338ca;font-weight:600}
.sh-rz{position:absolute;z-index:1}
.sh-hc .sh-rz{top:0;right:-3px;width:6px;height:100%;cursor:col-resize}
.sh-hr .sh-rz{left:0;bottom:-3px;height:6px;width:100%;cursor:row-resize}
.sh-rzline{position:absolute;z-index:9;background:#4f46e5;pointer-events:none}
.sh-rzline.is-c{top:0;bottom:0;width:1px}
.sh-rzline.is-r{left:0;right:0;height:1px}
.sh-body{position:absolute;left:46px;top:24px;right:0;bottom:0;overflow:auto;outline:none}
.sh-sizer{position:relative}
.sh-pane{position:absolute;left:46px;top:24px;overflow:hidden;background:#fff;z-index:3}
.sh-pane-top{right:0;border-bottom:2px solid #94a3b8}
.sh-pane-left{bottom:0;border-right:2px solid #94a3b8}
.sh-pane-corner{z-index:4;border-right:2px solid #94a3b8;border-bottom:2px solid #94a3b8}
.sh-c{position:absolute;box-sizing:border-box;display:flex;overflow:hidden;padding:0 3px;border-right:1px solid var(--sh-grid);border-bottom:1px solid var(--sh-grid);font-family:var(--sh-font);font-size:calc(14.67px * var(--sh-z));line-height:1.2;white-space:nowrap;color:#000}
.sh-c.is-over{overflow:visible;z-index:1;border-right-color:transparent}
.sh-c.is-wrap .sh-t{white-space:pre-wrap;overflow-wrap:anywhere}
.sh-t{min-width:0;max-width:100%}
.sh-c.is-over .sh-t{max-width:none}
.sh-t.is-link{color:#1d4ed8;text-decoration:underline}
.sh.no-grid .sh-c{border-right-color:transparent;border-bottom-color:transparent}
.sh.no-fx .sh-fx{display:none}
.sh-c.is-rd{box-shadow:inset 0 0 0 999px rgba(250,204,21,.16)}
.sh:fullscreen{background:var(--bg);padding:8px;overflow:auto}
.sh-sel{position:absolute;z-index:4;border:2px solid #4f46e5;pointer-events:none;box-sizing:border-box}
.sh-sel.is-multi{background:rgba(79,70,229,.1)}
.sh-sel.is-multi::after{content:"";position:absolute;left:var(--ax);top:var(--ay);width:var(--aw);height:var(--ah);box-sizing:border-box;margin:-2px 0 0 -2px;border:2px solid #4f46e5;background:rgba(255,255,255,.55)}
.sh-fill{position:absolute;z-index:5;width:8px;height:8px;background:#4f46e5;border:1px solid #fff;cursor:crosshair}
.sh-fillghost{position:absolute;z-index:5;border:1px dashed #4f46e5;pointer-events:none;box-sizing:border-box}
.sh-edit{position:absolute;z-index:8;box-sizing:border-box;margin:0;padding:1px 3px;border:2px solid #4f46e5;outline:none;resize:none;overflow:hidden;background:#fff;color:#000;font-family:var(--sh-font);font-size:calc(14.67px * var(--sh-z));line-height:1.2;box-shadow:0 4px 14px rgba(15,23,42,.18);white-space:pre}
.sh-probe{position:absolute;visibility:hidden;white-space:nowrap;font-family:var(--sh-font);font-size:14.67px}
.sh-foot{display:flex;align-items:center;gap:10px;min-height:36px;border-top:1px solid var(--border);background:var(--card);padding:0 6px}
.sh-tabs{display:flex;align-items:center;gap:2px;overflow-x:auto;flex:1;min-width:0}
.sh-tab{flex:none;border:0;border-bottom:3px solid transparent;background:transparent;color:var(--text);font:inherit;font-size:13.5px;padding:7px 12px;cursor:pointer;white-space:nowrap}
.sh-tab.is-on{border-bottom-color:#4f46e5;color:#4f46e5;font-weight:600;background:rgba(79,70,229,.06)}
.sh-tab.is-hidden{opacity:.5}
.sh-tab-add{flex:none}
.sh-status{flex:none;font-size:12.5px;color:var(--muted2);white-space:pre;padding-right:6px}
.ws-rot-90{transform:rotate(90deg)}
.ws-rot-270{transform:rotate(-90deg)}
@media (max-width:700px){.sh{height:calc(100vh - var(--hdr, 60px) - 60px)}.sh-status{display:none}.sh-name{width:64px}}
/* Soạn thảo văn bản (ws-word.js): trang giấy trắng giữa nền xám, nội dung dùng phông in */
.wd{display:flex;flex-direction:column;height:calc(100vh - var(--hdr, 60px) - 6px);min-height:460px;background:var(--card)}
.wd-scroll{flex:1;min-height:0;overflow:auto;background:#e8eaed;padding:24px 16px 48px;border-top:1px solid var(--border)}
.wd-paper{box-sizing:border-box;margin:0 auto;background:#fff;color:#000;box-shadow:0 1px 3px rgba(15,23,42,.18),0 6px 20px rgba(15,23,42,.08);cursor:text}
.wd-doc{outline:none;min-height:100%;font-family:"Times New Roman",Tinos,serif;font-size:12pt;line-height:1.15;white-space:pre-wrap;overflow-wrap:break-word;tab-size:4}
.wd-doc p{margin:0 0 6pt}
.wd-doc h1,.wd-doc h2,.wd-doc h3{margin:12pt 0 6pt;line-height:1.2;font-weight:700}
.wd-doc h1{font-size:20pt}.wd-doc h2{font-size:16pt}.wd-doc h3{font-size:14pt}
.wd-doc ul,.wd-doc ol{margin:0 0 6pt;padding-left:24pt}
.wd-doc li p{margin:0 0 2pt}
.wd-doc ol ol{list-style-type:lower-alpha}.wd-doc ol ol ol{list-style-type:lower-roman}.wd-doc ul ul{list-style-type:circle}.wd-doc ul ul ul{list-style-type:square}
.wd-doc blockquote{margin:0 0 6pt 18pt;padding-left:10pt;border-left:3px solid #cbd5e1;color:#555e6e;font-style:italic}
.wd-doc pre{margin:0 0 6pt;padding:8px 10px;background:#f1f5f9;border-radius:4px;font:10.5pt/1.4 "Courier New",monospace;white-space:pre-wrap}
.wd-doc code{font-family:"Courier New",monospace;background:#f1f5f9;padding:0 2px;border-radius:3px}
.wd-doc a{color:#0563c1;text-decoration:underline}
.wd-doc hr{border:0;border-top:1px solid #999;margin:8pt 0}
.wd-doc img{max-width:100%;height:auto}
.wd-doc img.ProseMirror-selectednode,.wd-doc [data-resize-wrapper].ProseMirror-selectednode{outline:2px solid #4f46e5}
.wd-doc mark{color:inherit;padding:0}
.wd-doc table{border-collapse:collapse;table-layout:fixed;width:100%;margin:0 0 6pt;overflow:hidden}
.wd-doc td,.wd-doc th{position:relative;box-sizing:border-box;min-width:1em;border:1px solid #777;padding:3px 5px;vertical-align:top}
.wd-doc th{background:#eef0f4;font-weight:700;text-align:left}
.wd-doc td p,.wd-doc th p{margin:0}
.wd-doc .selectedCell::after{content:"";position:absolute;inset:0;background:rgba(79,70,229,.15);pointer-events:none;z-index:2}
.wd-doc .column-resize-handle{position:absolute;right:-2px;top:0;bottom:-2px;width:4px;background:#4f46e5;pointer-events:none}
.wd-doc.resize-cursor{cursor:col-resize}
.wd-doc .tableWrapper{overflow-x:auto}
.wd-doc .wd-pb{position:relative;height:0;margin:14pt -9999px;border-top:1px dashed #94a3b8}
.wd-doc .wd-pb::after{content:attr(data-label);position:absolute;left:50%;top:-9px;transform:translateX(-50%);padding:0 8px;background:#fff;color:#64748b;font:11px/18px system-ui,sans-serif}
.wd-doc .wd-pb.ProseMirror-selectednode{border-top-color:#4f46e5}
.wd-doc p.is-editor-empty:first-child::before{content:attr(data-placeholder);float:left;height:0;color:#94a3b8;pointer-events:none}
.wd-foot-fill{flex:1}
.wd-paper{overflow:hidden}
/* điện thoại: bỏ khổ giấy cố định, chữ tự xuống dòng theo màn hình (như chế độ đọc của Word di động) */
@media (max-width:700px){.wd{height:calc(100vh - var(--hdr, 60px) - 60px)}.wd-scroll{padding:8px}.wd-paper{width:auto!important;min-height:100%!important;padding:16px!important;zoom:1!important}}
.ws-toast-btn{margin-left:10px;border:0;border-radius:999px;padding:4px 12px;background:#4f46e5;color:#fff;font:inherit;font-weight:600;cursor:pointer}
.ws-toast-btn:hover{background:#4338ca}
/* AI trong trình soạn thảo Word: khung kết quả dưới ribbon */
.wd-ai{display:flex;flex-direction:column;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(79,70,229,.06),var(--card))}
.wd-ai-head{display:flex;align-items:center;gap:6px;font-weight:600;font-size:13.5px;color:#4338ca}
.wd-ai-out{max-height:32vh;overflow:auto;white-space:pre-wrap;font-size:14.5px;line-height:1.5;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}
.wd-ai-out.is-typing{color:var(--muted2);font-style:italic}
.wd-ai-acts{display:flex;flex-wrap:wrap;gap:8px}
.wd-ai-acts .btn{height:34px;padding:0 14px}
.wd-paper{position:relative}
.wd-hf{position:absolute;font:10pt/1.2 "Times New Roman",Tinos,serif;color:#64748b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;border-radius:3px}
.wd-hf:hover{background:rgba(79,70,229,.08);color:#334155}
.wd-hfbox .wd-hf-field{display:flex;align-items:center;gap:6px;font-size:13px}
.wd-hfbox .ws-text-input{width:220px;height:32px}
.wd-hfbox .ws-select{height:32px}
.wd-doc .wd-toc{margin:0 0 10pt;padding:8pt 10pt;border:1px dashed #cbd5e1;border-radius:4px;cursor:default;user-select:none}
.wd-doc .wd-toc.ProseMirror-selectednode{outline:2px solid #4f46e5}
.wd-toc-title{font-weight:700;font-size:14pt;margin-bottom:6pt}
.wd-toc-l{cursor:pointer;padding:1pt 0}
.wd-toc-l:hover{color:#4338ca;text-decoration:underline}
.wd-toc-l1{font-weight:700}.wd-toc-l2{padding-left:14pt}.wd-toc-l3{padding-left:28pt}
.wd-toc-empty{color:#94a3b8;font-style:italic}
@media (max-width:700px){.wd-hf{display:none}.wd-hfbox .ws-text-input{width:150px}}
/* bảng tính: nút lọc ở hàng tiêu đề + bảng chọn giá trị */
.sh{position:relative}
.sh-fbtn{position:absolute;right:1px;top:50%;transform:translateY(-50%);z-index:2;width:18px;height:18px;padding:0;display:flex;align-items:center;justify-content:center;border:1px solid #cbd5e1;border-radius:3px;background:#fff;color:#475569;cursor:pointer}
.sh-fbtn .ws-ico{display:flex;transform:rotate(90deg)}
.sh-fbtn svg{width:12px;height:12px}
.sh-fbtn.is-on{background:#e0e7ff;border-color:#4f46e5;color:#4338ca}
.sh-filter{position:absolute;z-index:30;width:250px;display:flex;flex-direction:column;gap:6px;padding:8px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);box-shadow:var(--shadow)}
.sh-filter .ws-text-input{height:32px;width:100%}
.sh-filter-sort{border:0;background:transparent;color:var(--text);text-align:left;padding:5px 6px;border-radius:6px;font:inherit;font-size:13.5px;cursor:pointer}
.sh-filter-sort:hover{background:var(--bg)}
.sh-filter-list{max-height:220px;overflow:auto;border:1px solid var(--border);border-radius:6px;padding:4px}
.sh-filter-row{display:flex;align-items:center;gap:6px;padding:3px 4px;font-size:13.5px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sh-filter-row[hidden]{display:none}
.sh-filter-acts{display:flex;gap:6px;justify-content:flex-end}
.sh-filter-acts .btn{height:32px;padding:0 14px}
.sh-fbtn ~ .sh-t{margin-right:18px;overflow:hidden;text-overflow:ellipsis}
/* bảng tính: đối tượng nổi (ảnh, khung giữ chỗ biểu đồ / hình vẽ, ghi chú), menu chuột phải */
.ws-rot-180{transform:rotate(180deg)}
.sh-objs{position:absolute;left:0;top:0;width:0;height:0;z-index:2}
.sh-obj{position:absolute;box-sizing:border-box}
.sh-obj.is-img{cursor:move}
.sh-obj.is-img img{display:block;width:100%;height:100%;object-fit:fill;pointer-events:none;user-select:none}
.sh-obj.is-sel{outline:2px solid #4f46e5;outline-offset:1px}
.sh-obj-rz{position:absolute;right:-6px;bottom:-6px;width:12px;height:12px;border:2px solid #fff;border-radius:50%;background:#4f46e5;cursor:nwse-resize;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.sh-obj.is-kept{pointer-events:none;border:1.5px dashed #94a3b8;border-radius:4px;background:repeating-linear-gradient(135deg,rgba(148,163,184,.10) 0 10px,rgba(148,163,184,.04) 10px 20px)}
.sh-obj.is-chart{border-color:#6366f1;background:repeating-linear-gradient(135deg,rgba(99,102,241,.10) 0 10px,rgba(99,102,241,.03) 10px 20px)}
.sh-obj-label{pointer-events:auto;position:absolute;left:6px;top:6px;right:6px;display:flex;align-items:center;gap:6px;padding:4px 8px;border-radius:6px;background:rgba(255,255,255,.92);color:#334155;font:600 12px/1.3 system-ui,sans-serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;box-shadow:0 1px 3px rgba(15,23,42,.12);width:max-content;max-width:calc(100% - 12px)}
.sh-obj-label span{overflow:hidden;text-overflow:ellipsis}
.sh-obj.is-note{pointer-events:none;z-index:3;padding:6px 8px;background:#fffbe6;border:1px solid #d4b106;color:#1f2937;font:12px/1.35 system-ui,sans-serif;white-space:pre-wrap;box-shadow:0 2px 6px rgba(0,0,0,.15);max-height:160px;overflow:hidden}
.sh-c.has-note::after{content:"";position:absolute;right:0;top:0;border-style:solid;border-width:0 7px 7px 0;border-color:transparent #dc2626 transparent transparent}
.sh-c[data-rot="45"] .sh-t{transform:rotate(-45deg);transform-origin:center}
.sh-c[data-rot="-45"] .sh-t{transform:rotate(45deg);transform-origin:center}
.sh-c[data-rot="90"] .sh-t{writing-mode:vertical-rl;transform:rotate(180deg)}
.sh-c[data-rot="-90"] .sh-t{writing-mode:vertical-rl}
.sh-c[data-rot="v"] .sh-t{writing-mode:vertical-rl;text-orientation:upright}
.sh-hc.after-hidden{box-shadow:inset 3px 0 0 #94a3b8}
.sh-hr.after-hidden{box-shadow:inset 0 3px 0 #94a3b8}
.sh.is-painting .sh-body{cursor:copy}
.sh-ctx{position:fixed;z-index:1000;min-width:220px;max-height:80vh;overflow:auto;padding:5px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);box-shadow:var(--shadow)}
.sh-ctx-item{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;border:0;background:transparent;color:inherit;font:inherit;font-size:13.5px;text-align:left;padding:6px 10px;border-radius:6px;cursor:pointer}
.sh-ctx-item:hover:not(:disabled),.sh-ctx-item:focus-visible{background:var(--bg)}
.sh-ctx-item:disabled{opacity:.45;cursor:default}
.sh-ctx-key{color:var(--muted2);font-size:12px}
.sh-ctx-sep{height:1px;margin:4px 6px;background:var(--border)}
.sh-ctx-head{padding:6px 10px 2px;font-size:11.5px;font-weight:600;color:var(--muted2);text-transform:uppercase;letter-spacing:.03em}
.sh-notebox{position:absolute;z-index:31;width:240px;display:flex;flex-direction:column;gap:6px;padding:8px;border:1px solid #d4b106;border-radius:10px;background:#fffbe6;color:#1f2937;box-shadow:var(--shadow)}
.sh-notebox textarea{width:100%;min-height:80px;resize:vertical;background:#fff;color:#111}
.sh-notebox-head{font-size:12.5px;font-weight:600}
/* bảng tính: hộp thoại dùng chung, đánh dấu ô, lọc theo điều kiện, nhóm hàng, AI phân tích */
.sh-dlg-back{position:fixed;inset:0;z-index:1000;display:flex;align-items:flex-start;justify-content:center;padding:56px 12px;background:rgba(15,23,42,.28)}
.sh-dlg{width:min(440px,100%);max-height:calc(100% - 40px);display:flex;flex-direction:column;border:1px solid var(--border);border-radius:14px;background:var(--card);color:var(--text);box-shadow:0 20px 50px rgba(15,23,42,.25)}
.sh-dlg.is-wide{width:min(720px,100%)}
.ws-ui-menu{max-height:min(70vh,560px);overflow:auto}
button.sh-fx-ico{border:0;background:none;cursor:pointer;border-radius:6px;height:26px}
button.sh-fx-ico:hover{background:var(--hover);color:var(--text)}
.sh-fnpop{position:fixed;z-index:900;width:380px;max-width:calc(100vw - 8px);background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:8px;box-shadow:0 10px 28px rgba(15,23,42,.18);padding:4px;font-size:13px}
.sh-fnpop-it{display:flex;gap:10px;align-items:baseline;padding:5px 8px;border-radius:6px;cursor:pointer}
.sh-fnpop-it b{font-family:ui-monospace,Consolas,monospace;font-weight:600;min-width:92px}
.sh-fnpop-it span{color:var(--muted2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sh-fnpop-it.is-on{background:rgba(99,102,241,.14)}
.sh-fnpop.is-hint{padding:6px 10px}
.sh-fnpop-sig{font-family:ui-monospace,Consolas,monospace;word-break:break-word}
.sh-fnpop-sig b{color:var(--fp-primary)}
.sh-fnpop-d{margin-top:3px;color:var(--muted2)}
.sh-fnd{display:flex;flex-direction:column;gap:8px}
.sh-fnd-top{display:flex;gap:8px}
.sh-fnd-top .ws-text-input{flex:1;min-width:0}
.sh-fnd-list{display:flex;flex-direction:column;height:300px;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:4px}
.sh-fnd-it{display:flex;gap:10px;align-items:baseline;text-align:left;border:0;background:none;color:inherit;padding:6px 8px;border-radius:6px;cursor:pointer;font:inherit;font-size:13px}
.sh-fnd-it b{font-family:ui-monospace,Consolas,monospace;font-weight:600;min-width:110px}
.sh-fnd-it span{color:var(--muted2)}
.sh-fnd-it:hover{background:var(--hover)}
.sh-fnd-it.is-on{background:rgba(99,102,241,.14)}
.sh-fnd-info{min-height:52px;font-size:13px}
.sh-fnd-info b{font-family:ui-monospace,Consolas,monospace;word-break:break-word}
.sh-fnd-info p{margin:4px 0 0;color:var(--muted2)}
.sh-names{display:flex;flex-direction:column;gap:12px}
.sh-names-list{display:flex;flex-direction:column;gap:2px;max-height:240px;overflow:auto}
.sh-names-row{display:grid;grid-template-columns:minmax(90px,auto) 1fr auto;gap:10px;align-items:center;padding:4px 6px;border-bottom:1px solid var(--border);font-size:13px}
.sh-names-row span{color:var(--muted2);word-break:break-all;font-family:ui-monospace,Consolas,monospace}
.sh-names-add{display:grid;grid-template-columns:1fr 1.4fr auto;gap:8px;align-items:end}
@media (max-width:600px){.sh-names-add{grid-template-columns:1fr}.sh-fnd-it b{min-width:84px}}
.sh-dlg-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px 6px}
.sh-dlg-head h3{margin:0;font-size:16px}
.sh-dlg-body{padding:6px 14px 12px;overflow:auto}
.sh-dlg-acts{display:flex;justify-content:flex-end;gap:8px;padding:10px 14px;border-top:1px solid var(--border)}
.sh-dlg-acts .btn{height:36px;padding:0 16px}
.sh-dlg-form{display:flex;flex-direction:column;gap:10px}
.sh-fld{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted2)}
.sh-fld[hidden]{display:none}
.sh-fld .ws-text-input,.sh-fld .ws-select{height:36px;width:100%;color:var(--text)}
.sh-chk{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}
.sh-dlg-note{margin:0;font-size:13px;color:var(--muted2)}
.sh-dlg-list{display:flex;flex-direction:column;gap:4px;max-height:220px;overflow:auto;padding:6px 8px;border:1px solid var(--border);border-radius:8px}
.sh-sort-levels{display:flex;flex-direction:column;gap:8px}
.sh-sort-row{display:grid;grid-template-columns:64px 1fr 150px;gap:6px;align-items:center}
.sh-sort-row .ws-select{height:34px;min-width:0}
.sh-sort-lab{font-size:13px;color:var(--muted2)}
.sh-filter-cond{display:grid;grid-template-columns:1fr auto;gap:6px;padding-bottom:6px;border-bottom:1px solid var(--border)}
.sh-filter-cond .ws-select{grid-column:1/-1;height:32px}
.sh-filter-cond .ws-text-input{height:32px;width:100%;grid-column:1}
.sh-filter-cond .ws-add-btn{grid-column:2;grid-row:2}
.sh-filter-cond [hidden]{display:none}
.sh-dvlist{max-height:260px;overflow:auto;width:250px}
.sh-dvbtn{right:1px}
.sh-c.is-mark{outline:2px solid #dc2626;outline-offset:-2px;background-color:rgba(220,38,38,.06)}
.sh-hr.ol{background:linear-gradient(90deg,#c7d2fe 0 3px,transparent 3px),#f1f5f9}
.sh-hr.ol2{background:linear-gradient(90deg,#a5b4fc 0 5px,transparent 5px),#f1f5f9}
.sh-hr.ol3{background:linear-gradient(90deg,#818cf8 0 7px,transparent 7px),#f1f5f9}
.sh-ai{display:flex;flex-direction:column;gap:10px}
.sh-ai-out{min-height:160px;max-height:55vh;overflow:auto;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);font-size:14.5px;line-height:1.55}
.sh-ai-out.is-typing{color:var(--muted2);font-style:italic}
.sh-ai-out h4{margin:10px 0 4px;font-size:14.5px}
.sh-ai-out ul{margin:4px 0 8px;padding-left:20px}
.sh-ai-out p{margin:4px 0}
.sh-ai-ask{display:flex;gap:8px}
.sh-ai-ask .ws-text-input{flex:1;height:38px}
/* bảng tính: biểu đồ + sparkline */
.sh-obj.is-ch{cursor:move;background:#fff;border:1px solid #d9d9d9;box-shadow:0 1px 3px rgba(15,23,42,.08)}
.sh-obj.is-ch svg,.sh-obj.is-drawn svg{display:block;width:100%;height:100%;pointer-events:none}
.sh-obj.is-drawn{border:1px solid #d9d9d9;background:#fff}
.sh-obj-badge{pointer-events:auto;position:absolute;right:4px;top:4px;display:flex;padding:3px;border-radius:6px;background:rgba(255,255,255,.9);color:#64748b;box-shadow:0 1px 2px rgba(0,0,0,.12)}
.sh-obj-badge svg{width:12px;height:12px}
.sh-spark{position:absolute;inset:1px;pointer-events:none}
.sh-spark svg{display:block;width:100%;height:100%}
/* bảng tính: ngắt trang trên lưới + xem trước khi in */
.sh-brk{position:absolute;pointer-events:none;z-index:3}
.sh-brk.is-v{width:0;border-left:2px dashed #2563eb}
.sh-brk.is-h{height:0;border-top:2px dashed #2563eb}
.sh-brk.is-man{border-top-style:solid}
.sh-pv{display:flex;flex-direction:column;gap:10px}
.sh-pv-info{font-size:13px;color:var(--muted2)}
.sh-pv-pages{display:flex;flex-direction:column;align-items:center;gap:14px;max-height:62vh;overflow:auto;padding:12px;background:#e8eaed;border-radius:10px}
.sh-pv-pages img{max-width:100%;background:#fff;box-shadow:0 2px 8px rgba(15,23,42,.18)}
.sh-pv-acts{display:flex;justify-content:flex-end;gap:8px}
.sh-pv-acts .btn{height:36px;padding:0 18px}
.sh-hf-grid{display:grid;grid-template-columns:90px 1fr 1fr 1fr;gap:8px;align-items:center}
.sh-hf-grid .sh-dlg-note{grid-column:1/-1}
.sh-hf-grid .ws-text-input{height:34px;width:100%;min-width:0}
.sh-hf-lab{font-size:13px;color:var(--muted2)}

/* In file (FC.printFile): chỉ in các tờ đã dựng, ẩn toàn bộ giao diện; khổ / lề đặt bằng @page chèn lúc in */
#fc-print{display:none}
@media print{
  body.fc-printing>*:not(#fc-print){display:none!important}
  body.fc-printing #fc-print{display:block}
  body.fc-printing .fc-pr-sheet{display:flex;align-items:center;justify-content:center;overflow:hidden;margin:0 auto;page-break-after:always;break-after:page}
  body.fc-printing .fc-pr-sheet:last-child{page-break-after:auto;break-after:auto}
  body.fc-printing .fc-pr-sheet.is-land{page:fc-land}
  body.fc-printing .fc-pr-sheet img{display:block;max-width:100%;max-height:100%}
  body.fc-printing #fc-print.is-gray img{filter:grayscale(1)}
}
/* Màn hình "Cài đặt in" (ws-print.js), bố cục như Google Docs / Sheets */
html.pv-lock{overflow:hidden}
.pv-print{position:fixed;inset:0;z-index:400;display:flex;flex-direction:column;background:var(--canvas-bg,#e9eef5);color:var(--text)}
.pv-top{display:flex;align-items:center;gap:18px;height:64px;padding:0 20px 0 28px;background:#3c4043;color:#fff;flex:none}
.pv-title{margin:0;font-size:20px;font-weight:600}
.pv-total{font-size:14px;opacity:.9}
.pv-flex{flex:1}
.pv-cancel{height:38px;padding:0 18px;border:0;border-radius:6px;background:transparent;color:#fff;font:inherit;font-size:14px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;cursor:pointer}
.pv-cancel:hover{background:rgba(255,255,255,.1)}
.pv-go{height:38px;padding:0 26px;border:0;border-radius:6px;background:#1a73e8;color:#fff;font:inherit;font-size:14px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;cursor:pointer}
.pv-go:hover{background:#1765cc}
.pv-go:disabled{opacity:.5;cursor:default}
.pv-main{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 320px}
.pv-stage{position:relative;overflow:auto;padding:28px 20px 90px}
.pv-sheets{display:flex;flex-direction:column;align-items:center;gap:28px}
.pv-sheet{flex:none;box-sizing:border-box;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff;box-shadow:0 1px 3px rgba(60,64,67,.3),0 4px 12px rgba(60,64,67,.15)}
.pv-sheet[hidden]{display:none}
.pv-img{display:block;max-width:100%;max-height:100%}
.pv-zoom{position:sticky;bottom:0;float:right;display:flex;flex-direction:column;gap:12px;margin-top:-100px}
.pv-zbtn{width:44px;height:44px;border-radius:50%;background:var(--card);box-shadow:0 1px 3px rgba(60,64,67,.3),0 2px 8px rgba(60,64,67,.15)}
.pv-side{overflow:auto;background:var(--card);border-left:1px solid var(--border);padding:22px 20px;display:flex;flex-direction:column;gap:20px}
.pv-field{display:flex;flex-direction:column;gap:8px}
.pv-label{font-size:13px;color:var(--muted)}
.pv-select,.pv-input{height:44px;padding:0 12px;border:1px solid var(--border);border-radius:6px;background:var(--card);color:var(--text);font:inherit;font-size:15px}
.pv-select:focus,.pv-input:focus{outline:2px solid #1a73e8;outline-offset:-1px}
.pv-radios{display:flex;flex-wrap:wrap;gap:6px 18px}
.pv-radio{display:inline-flex;align-items:center;gap:8px;font-size:15px;cursor:pointer}
.pv-radio input{width:18px;height:18px;accent-color:#1a73e8}
@media(max-width:820px){.pv-main{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) auto}.pv-side{max-height:45vh;border-left:0;border-top:1px solid var(--border)}.pv-top{padding:0 12px;gap:10px}.pv-title{font-size:17px}}

/* Cột công cụ trái khi thu gọn (kiểu Google Docs): biểu tượng xám nằm thẳng trên nền trang, rê chuột mới hiện màu riêng
   của từng nhóm + nền tròn nhạt cùng tông, biểu tượng nảy nhẹ; nhóm đang dùng giữ màu + vạch màu ở mép trái */
[data-cat=edit]{--c:#1a73e8}[data-cat=organize]{--c:#9334e6}[data-cat=from-pdf]{--c:#d93025}
[data-cat=to-pdf]{--c:#e8710a}[data-cat=optimize]{--c:#e3a008}[data-cat=security]{--c:#12a4af}
[data-cat=ai]{--c:#c026d3}[data-cat=office]{--c:#0f9d58}[data-cat=img]{--c:#e52592}[data-cat=qr]{--c:#4f46e5}
.fp-workspace.is-wide .fp-accord,.fp-workspace.is-wide .fp-accord:hover,.fp-workspace.is-wide .fp-accord:has(.fp-accord-item.active){background:transparent;border-color:transparent;box-shadow:none}
.fp-workspace.is-wide .fp-accord summary{color:var(--muted2);border-radius:12px;transition:background .18s ease,color .18s ease}
.fp-workspace.is-wide .fp-accord-head svg{transition:transform .18s cubic-bezier(.34,1.56,.64,1)}
.fp-workspace.is-wide .fp-accord:hover summary,.fp-workspace.is-wide .fp-accord:focus-within summary{color:var(--c);background:color-mix(in srgb,var(--c) 12%,transparent)}
.fp-workspace.is-wide .fp-accord:hover .fp-accord-head svg,.fp-workspace.is-wide .fp-accord:focus-within .fp-accord-head svg{transform:scale(1.12)}
.fp-workspace.is-wide .fp-accord:has(.fp-accord-item.active) summary{color:var(--c);background:color-mix(in srgb,var(--c) 14%,transparent)}
.fp-workspace.is-wide .fp-accord:has(.fp-accord-item.active)::before{content:"";position:absolute;left:-5px;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--c)}
.fp-workspace.is-wide .fp-accord-item:hover .icon-box,.fp-workspace.is-wide .fp-accord-item.active .icon-box{color:var(--c);border-color:var(--c);background:color-mix(in srgb,var(--c) 10%,transparent)}
.fp-workspace.is-wide .fp-accord-item.active{color:var(--c);background:color-mix(in srgb,var(--c) 8%,transparent)}
.fp-workspace.is-wide .fp-accord summary:focus-visible{outline:2px solid var(--c);outline-offset:1px}
@media (prefers-reduced-motion:reduce){.fp-workspace.is-wide .fp-accord summary,.fp-workspace.is-wide .fp-accord-head svg{transition:none}.fp-workspace.is-wide .fp-accord:hover .fp-accord-head svg{transform:none}}
/* cuộn tới cuối vùng làm việc cột trái bị đẩy lên: luôn trượt DƯỚI thanh đầu trang (z 30), không đè logo */
.fp-workspace.is-wide .fp-ws-left{z-index:29}
/* Biểu tượng công cụ (cột trái, menu bật ra, danh sách ở trang chủ): không nền / viền quanh biểu tượng — xám khi yên,
   rê chuột (hoặc nhóm đang dùng) thì CHỈ biểu tượng đổi sang màu của nhóm, như các nút trên ribbon */
.fp-workspace.is-wide .fp-accord:hover summary,.fp-workspace.is-wide .fp-accord:focus-within summary,.fp-workspace.is-wide .fp-accord:has(.fp-accord-item.active) summary{background:transparent}
.fp-accord-head svg{color:var(--muted2);transition:color .18s ease,transform .18s cubic-bezier(.34,1.56,.64,1)}
.fp-accord summary:hover .fp-accord-head svg,.fp-accord:focus-within summary .fp-accord-head svg,.fp-accord:has(.fp-accord-item.active) .fp-accord-head svg{color:var(--c)}
.fp-accord-item .icon-box,.fp-accord-item:hover .icon-box,.fp-accord-item.active .icon-box,.fp-workspace.is-wide .fp-accord-item:hover .icon-box,.fp-workspace.is-wide .fp-accord-item.active .icon-box{border-color:transparent;background:transparent;color:var(--muted2);transition:color .15s ease}
.fp-accord-item:hover .icon-box,.fp-accord-item.active .icon-box,.fp-workspace.is-wide .fp-accord-item:hover .icon-box,.fp-workspace.is-wide .fp-accord-item.active .icon-box{color:var(--c)}
.fp-accord-item.active,.fp-accord-item:hover.active,.fp-workspace.is-wide .fp-accord-item.active{background:var(--hover);color:var(--text)}
/* Hàng nút "việc hay làm" dưới tiêu đề: biểu tượng xám, rê chuột đổi màu thương hiệu (cùng kiểu cột công cụ) */
.fp-quick-lab{margin:26px 0 10px;font-size:13px;font-weight:700;color:var(--muted2)}
.fp-quick{display:flex;flex-wrap:wrap;gap:8px}
.fp-quick-chip{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border:1px solid var(--border);border-radius:999px;background:var(--card);color:var(--text);font-size:14px;font-weight:600;text-decoration:none;transition:border-color .15s,color .15s,transform .15s}
.fp-quick-chip svg{color:var(--muted2);transition:color .15s}
.fp-quick-chip:hover{border-color:var(--fp-primary);color:var(--fp-primary);transform:translateY(-1px)}
.fp-quick-chip:hover svg{color:var(--fp-primary)}
/* Đã mở file (đang làm việc): ẩn khối giới thiệu để trình sửa lên sát thanh đầu trang */
body.is-editing .fp-hero{display:none}

/* ===== Khung làm việc: đầu công cụ (icon + tên + mô tả) + ô thả file chiếm trọn khung; chưa có file thì ẩn hàng nút ===== */
.ws-head{display:flex;align-items:center;gap:12px;padding-right:44px}
.ws-head[hidden],.fp-workspace.is-editing .ws-head{display:none}
.ws-head-ico{flex:none;display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:rgba(79,70,229,.1);color:var(--fp-primary)}
.ws-head-ico svg{width:22px;height:22px}
.ws-head-title{margin:0;font-size:18px;font-weight:800;line-height:1.3}
.ws-head-desc{margin:2px 0 0;font-size:13px;line-height:1.45;color:var(--muted2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fp-ws-drop:not(.is-compact){flex:1;min-height:320px;border-radius:14px;border-color:color-mix(in srgb,var(--fp-primary) 28%,var(--border));background:linear-gradient(180deg,rgba(79,70,229,.05),rgba(79,70,229,.015))}
.fp-ws-drop:not(.is-compact) .fp-upload-icon{width:64px;height:64px;border-radius:50%;background:rgba(79,70,229,.1)}
.fp-ws-drop:not(.is-compact) .fp-upload-icon svg{width:30px;height:30px}
.fp-ws-drop .drop-title{font-size:18px}
.drop-safe{display:flex;align-items:center;gap:6px;margin:18px 0 0;font-size:12.5px;color:var(--muted2)}
.drop-safe svg{flex:none;color:#16a34a}
.fp-ws-drop.is-compact .drop-safe{display:none}
.ws-actions.is-idle{display:none}
/* Cột công cụ dính theo màn hình, tự cuộn bên trong: không kéo dài trang khi mở ngăn */
/* hai cột cao bằng nhau (--ws-h): cột trái dài hơn thì cuộn trong, khung phải không còn khoảng trống bên dưới */
@media(min-width:769px){.fp-workspace:not(.is-wide){--ws-h:min(calc(100vh - var(--hdr,64px) - 24px),640px)}
.fp-workspace:not(.is-wide) .fp-ws-left>*{flex-shrink:0}
.fp-workspace:not(.is-wide) .fp-ws-left{position:sticky;top:calc(var(--hdr,64px) + 12px);max-height:var(--ws-h);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.fp-workspace:not(.is-wide):not(.is-editing) .fp-ws-right{min-height:var(--ws-h)}}

/* ===== Trang chủ: phần giới thiệu ở giữa; bên dưới khu làm việc là các khối tính năng xếp so le (chữ | video) ===== */
.fp-hero{flex-direction:column;align-items:center;justify-content:center;max-width:1120px;padding:84px 32px 52px;gap:0;text-align:center}
.fp-hero-text{flex:none;width:100%}
.fp-hero .sub{margin-left:auto;margin-right:auto;max-width:620px}
.fp-hero-cta,.fp-quick{justify-content:center}
.fp-show{max-width:1180px;margin:88px auto 24px;padding:0 32px}
.fp-show-head{max-width:680px;margin:0 auto 24px;text-align:center}
.fp-show-head h2{margin:0 0 10px;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.fp-show-head p{margin:0;font-size:16px;line-height:1.6;color:var(--muted)}
.fp-feat{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:72px;align-items:center;padding:64px 0}
.fp-feat:nth-of-type(even){grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.fp-feat:nth-of-type(even) .fp-feat-media{order:-1}
.fp-feat-eye{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;font-size:13px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--c)}
.fp-feat-eye svg{color:var(--c)}
.fp-feat h3{margin:0 0 14px;font-size:clamp(1.45rem,2.5vw,1.95rem);font-weight:800;line-height:1.22;letter-spacing:-.015em}
.fp-feat-text>p:not(.fp-feat-eye){margin:0 0 18px;font-size:16px;line-height:1.7;color:var(--muted)}
.fp-feat-list{list-style:none;margin:0 0 22px;padding:0;display:grid;gap:9px}
.fp-feat-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;line-height:1.45}
.fp-feat-list svg{flex:none;margin-top:2px;color:var(--c)}
.fp-feat-link{display:inline-flex;align-items:center;gap:4px;font-size:15px;font-weight:700;color:var(--c);text-decoration:none}
.fp-feat-link svg{transition:transform .18s ease}
.fp-feat-link:hover{color:var(--c);text-decoration:underline;text-underline-offset:4px}
.fp-feat-link:hover svg{transform:translateX(3px)}
.fp-feat-media{position:relative;padding:22px}
.fp-feat-media::before{content:"";position:absolute;inset:0 6% 4% 0;border-radius:28px;background:color-mix(in srgb,var(--c) 11%,transparent);transform:rotate(-3deg)}
.fp-feat:nth-of-type(even) .fp-feat-media::before{inset:0 0 4% 6%;transform:rotate(3deg)}
.fp-feat-frame{position:relative;aspect-ratio:960/570;border-radius:14px;overflow:hidden;border:1px solid var(--border);background:var(--card);box-shadow:0 18px 48px rgba(15,23,42,.14)}
.fp-feat-vid{display:block;width:100%;height:100%;object-fit:cover}
.fp-reveal .fp-feat{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1)}
.fp-reveal .fp-feat.is-in{opacity:1;transform:none}
body.is-editing .fp-show{display:none}
@media(max-width:860px){.fp-show{margin-top:56px;padding:0 20px}.fp-feat,.fp-feat:nth-of-type(even){grid-template-columns:1fr;gap:18px;padding:36px 0}.fp-feat:nth-of-type(even) .fp-feat-media{order:0}.fp-feat-media{padding:12px}.fp-hero{padding:44px 20px 28px}}
/* Menu công cụ + danh bạ chân trang: biểu tượng xám, rê chuột mới hiện màu riêng của nhóm (như cột công cụ bên trái) */
.fp-dropdown a .icon-box{border-color:transparent;background:none;color:var(--muted2);transition:color .15s,transform .18s cubic-bezier(.34,1.56,.64,1)}
.fp-dropdown a:hover{color:var(--text)}
.fp-dropdown a:hover .icon-box{color:var(--c,var(--fp-primary));transform:scale(1.12)}
.ft-col li svg{color:var(--muted2);transition:color .15s}
.ft-col li a:hover{color:var(--text)}
.ft-col li a:hover svg{color:var(--c,var(--fp-primary))}
.fp-mobile-menu>div{display:flex;flex-direction:column;gap:2px}
.fp-mobile-menu a .icon-box{border-color:transparent;background:none;color:var(--muted2)}
.fp-mobile-menu a:active .icon-box,.fp-mobile-menu a:hover .icon-box{color:var(--c,var(--fp-primary))}