/* ==== StPageFlip core css (inlined) ==== */
.stf__parent{position:relative;display:block;box-sizing:border-box;transform:translateZ(0);-ms-touch-action:pan-y;touch-action:pan-y}
.sft__wrapper{position:relative;width:100%;box-sizing:border-box}
.stf__parent canvas{position:absolute;width:100%;height:100%;left:0;top:0}
.stf__block{position:absolute;width:100%;height:100%;box-sizing:border-box;perspective:2000px}
.stf__item{display:none;position:absolute;transform-style:preserve-3d}
.stf__outerShadow,.stf__innerShadow,.stf__hardShadow,.stf__hardInnerShadow{position:absolute;left:0;top:0}

/* ==== Design tokens ==== */
:root{
  --accent:#F37021;          /* FPT orange — màu chủ đạo */
  --accent-600:#e0620f;
  --accent-700:#c4540b;      /* cam đậm cho chữ trên nền trắng */
  --fpt-orange:#F37021;
  --fpt-blue:#1CA9E0;   --fpt-blue-ink:#0f7bad;
  --fpt-green:#7AC142;  --fpt-green-ink:#4f8b1e;
  --fpt-navy:#0E1830;
  --ink:#0E1830;
  --ink-2:#3a4150;
  --muted:#7a8290;
  --line:#e7e9ee;
  --panel:#ffffff;
  --panel-2:#f6f7f9;
  --page-bg:#ffffff;
  --shadow-sm:0 1px 2px rgba(20,24,33,.06),0 1px 3px rgba(20,24,33,.08);
  --shadow-md:0 6px 20px rgba(20,24,33,.10);
  --radius:14px;
  --radius-sm:10px;
  --font:"Roboto","Tahoma","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
  --zoom:1;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);
  background:#e9ebef;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}

/* ==== Reader shell ==== */
.reader{
  display:flex;flex-direction:column;min-height:300px;
  background:radial-gradient(1200px 620px at 50% -8%,#ffffff 0%,#eef0f3 55%,#e5e7ec 100%);
}
.reader.fs{height:100vh}
.brandbar{flex:0 0 auto;height:3px;background:linear-gradient(90deg,var(--fpt-orange) 0%,var(--fpt-green) 52%,var(--fpt-blue) 100%)}

/* Toolbar */
.toolbar{
  flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);z-index:5;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent-700));
  display:grid;place-items:center;color:#fff;box-shadow:var(--shadow-sm);
}
.logo svg{width:22px;height:22px}
.brand-txt{min-width:0}
.brand-txt .t{font-weight:700;font-size:15px;line-height:1.15;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-txt .s{font-size:11.5px;color:var(--muted);line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tools{display:flex;align-items:center;gap:6px}
.zoomwrap{display:flex;align-items:center;gap:2px;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:3px}
.zval{font-size:12px;color:var(--ink-2);min-width:44px;text-align:center;font-variant-numeric:tabular-nums}

.btn{
  appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--ink-2);
  height:36px;min-width:36px;padding:0 10px;border-radius:10px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  font-family:inherit;font-size:13px;font-weight:600;transition:.15s ease;
}
.btn svg{width:18px;height:18px}
.btn:hover{border-color:#d5d8df;background:#fbfbfc;color:var(--ink)}
.btn:active{transform:translateY(1px)}
.btn.round{border-radius:999px;background:transparent;border-color:transparent}
.btn.round:hover{background:var(--panel-2)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff}
.btn:disabled{opacity:.4;cursor:default;transform:none}
.btn .lbl{white-space:nowrap}

/* Stage */
.stage-wrap{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding:22px 64px;overflow:hidden;
}
.reader.fs .stage-wrap{flex:1 1 auto;min-height:0}
.viewport{
  position:relative;width:100%;display:flex;align-items:center;justify-content:center;
  overflow:auto;padding:22px;
}
.reader.fs .viewport{position:absolute;inset:0}
.stage{ width:100%;max-width:980px;margin:auto; }
.viewport.zoomed{align-items:flex-start;justify-content:flex-start}
.viewport.zoomed .stage{margin:0}
.flipbook{margin:0 auto;filter:drop-shadow(0 18px 40px rgba(20,24,33,.28))}

/* Side nav arrows */
.nav{
  position:absolute;top:50%;transform:translateY(-50%);z-index:4;
  width:46px;height:46px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.9);backdrop-filter:blur(6px);color:var(--ink-2);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-md);transition:.15s ease;
}
.nav:hover{color:var(--accent-700);border-color:#f2c9a6}
.nav:active{transform:translateY(-50%) scale(.95)}
.nav.prev{left:12px}.nav.next{right:12px}
.nav svg{width:22px;height:22px}
.nav:disabled{opacity:.35;cursor:default}

/* Footer / pager + thumbnails */
.footbar{
  flex:0 0 auto;background:var(--panel);border-top:1px solid var(--line);
  box-shadow:0 -1px 2px rgba(20,24,33,.04);padding:8px 14px 10px;z-index:5;
}
.pager{display:flex;align-items:center;justify-content:center;gap:14px;margin-bottom:8px}
.pager .grp{display:flex;align-items:center;gap:8px}
.pageinput{
  width:46px;height:32px;border:1px solid var(--line);border-radius:8px;text-align:center;
  font-family:inherit;font-size:13px;color:var(--ink);font-variant-numeric:tabular-nums;
}
.pageinput:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(243,112,33,.16)}
.pager .sep{color:var(--muted)}
.pager .total{color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.pbar{height:3px;border-radius:2px;background:var(--panel-2);overflow:hidden;margin:0 auto 8px;max-width:520px}
.pbar > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-700));transition:width .3s ease}

.thumbs{
  display:flex;gap:8px;overflow-x:auto;overflow-y:hidden;padding:4px 2px 6px;scroll-behavior:smooth;
  scrollbar-width:thin;scrollbar-color:#cdd2da transparent;
}
.thumbs::-webkit-scrollbar{height:8px}
.thumbs::-webkit-scrollbar-thumb{background:#cdd2da;border-radius:999px}
.thumb{
  flex:0 0 auto;width:52px;height:70px;border-radius:8px;border:2px solid var(--line);
  background:var(--panel-2);cursor:pointer;position:relative;overflow:hidden;transition:.15s ease;
  display:flex;flex-direction:column;
}
.thumb:hover{border-color:#f2c9a6;transform:translateY(-2px)}
.thumb.active{border-color:var(--accent);box-shadow:0 0 0 3px rgba(243,112,33,.18)}
.thumb .tn{position:absolute;left:0;bottom:0;right:0;font-size:10px;font-weight:700;color:#fff;background:rgba(31,36,48,.55);text-align:center;padding:1px 0}
.thumb .tt{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;font-size:8.5px;line-height:1.15;color:var(--muted);padding:5px 4px 12px;font-weight:600}
.thumb.is-cover .tt{color:var(--accent-700)}

/* ===== Handbook pages ===== */
.page{
  background:var(--page-bg);overflow:hidden;
}
.stf__item .page{width:100%;height:100%}
.p-inner{width:100%;height:100%;padding:34px 32px;position:relative;display:flex;flex-direction:column}
.p-folio{position:absolute;bottom:14px;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
.page.left .p-folio{left:28px}.page.right .p-folio{right:28px;text-align:right}
.page:not(.left):not(.right) .p-folio{right:28px}
.p-kicker{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--accent-700);font-weight:700}
.p-h{font-size:22px;font-weight:800;color:var(--ink);margin:6px 0 4px;letter-spacing:.2px}
.p-rule{width:46px;height:4px;border-radius:3px;background:var(--accent);margin:10px 0 16px}
.p-sub{font-size:12.5px;color:var(--muted)}
.p-body{font-size:13px;line-height:1.68;color:var(--ink-2);flex:1}
.p-body p{margin:0 0 11px}

/* Cover */
.page--cover .p-inner,.page--back .p-inner{padding:0}
.cover{
  width:100%;height:100%;position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(160deg,#fff 0%,#fff 42%,#fdecdf 42%,#fdecdf 100%);
}
.cover .cv-top{padding:40px 34px 0;color:var(--ink)}
.cover .cv-badge{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent-700));display:grid;place-items:center;box-shadow:var(--shadow-md)}
.cover .cv-badge svg{width:32px;height:32px;color:#fff}
.cover .cv-org{margin-top:18px;font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--accent-700);font-weight:800}
.cover .cv-title{margin-top:12px;font-size:40px;line-height:1.02;font-weight:900;color:var(--ink);letter-spacing:.5px}
.cover .cv-year{margin-top:14px;display:inline-block;background:var(--accent);color:#fff;font-weight:700;font-size:13px;padding:7px 16px;border-radius:999px}
.cover .cv-foot{position:absolute;left:34px;bottom:30px;right:34px;color:var(--ink-2)}
.cover .cv-foot .l{font-size:11px;color:var(--muted);letter-spacing:1px;text-transform:uppercase}
.cover .cv-foot .v{font-size:15px;font-weight:700;color:var(--ink)}
.cover .cv-arc{position:absolute;right:-70px;bottom:-70px;width:230px;height:230px;border-radius:50%;background:rgba(255,255,255,.35)}
.cover .cv-arc2{position:absolute;right:20px;top:120px;width:120px;height:120px;border-radius:50%;border:2px dashed rgba(196,84,11,.35)}

.page--back .back{width:100%;height:100%;background:linear-gradient(160deg,#fff,#fbfbfc);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px;position:relative}
.page--back .cv-badge{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent-700));display:grid;place-items:center;margin-bottom:18px}
.page--back .cv-badge svg{width:28px;height:28px;color:#fff}
.page--back .tag{font-size:19px;font-weight:800;color:var(--ink);max-width:240px;line-height:1.3}
.page--back .sm{margin-top:12px;font-size:11.5px;color:var(--muted)}

/* TOC */
.toc{list-style:none;margin:0;padding:0}
.toc li{display:flex;align-items:baseline;gap:8px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13px}
.toc .no{width:22px;height:22px;flex:0 0 auto;border-radius:6px;background:#fdecdf;color:var(--accent-700);font-weight:800;font-size:11px;display:grid;place-items:center}
.toc .nm{color:var(--ink-2);font-weight:600}
.toc .dots{flex:1;border-bottom:1px dotted #cfd4dc;transform:translateY(-3px)}
.toc .pg{color:var(--muted);font-variant-numeric:tabular-nums}

/* Vision/mission cards */
.vm{display:flex;flex-direction:column;gap:11px}
.vm .card{border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:10px;padding:12px 14px;background:#fff}
.vm .card h4{margin:0 0 4px;font-size:13px;color:var(--accent-700);letter-spacing:.5px;text-transform:uppercase}
.vm .card p{margin:0;font-size:12.5px;line-height:1.6;color:var(--ink-2)}
.vm .card.c-blue{border-left-color:var(--fpt-blue)}   .vm .card.c-blue h4{color:var(--fpt-blue-ink)}
.vm .card.c-green{border-left-color:var(--fpt-green)} .vm .card.c-green h4{color:var(--fpt-green-ink)}

/* Rules list */
.rules{counter-reset:r;list-style:none;margin:0;padding:0}
.rules li{position:relative;padding:8px 0 8px 34px;font-size:12.5px;line-height:1.55;color:var(--ink-2);border-bottom:1px solid #f1f2f5}
.rules li::before{counter-increment:r;content:counter(r);position:absolute;left:0;top:7px;width:24px;height:24px;border-radius:7px;background:var(--accent);color:#fff;font-weight:800;font-size:12px;display:grid;place-items:center}

/* Timetable */
.tt{width:100%;border-collapse:collapse;font-size:11px}
.tt th,.tt td{border:1px solid var(--line);padding:6px 5px;text-align:center}
.tt thead th{background:var(--accent);color:#fff;font-weight:700;letter-spacing:.3px}
.tt tbody th{background:#fdecdf;color:var(--accent-700);font-weight:700;width:52px}
.tt td{color:var(--ink-2)}
.tt tr:nth-child(even) td{background:#fafbfc}

/* Two column */
.cols{display:flex;gap:14px}
.cols .col{flex:1;border:1px solid var(--line);border-radius:10px;padding:12px 13px}
.cols .col h4{margin:0 0 8px;font-size:12.5px;color:var(--accent-700);text-transform:uppercase;letter-spacing:.5px}
.cols .col ul{margin:0;padding-left:16px}
.cols .col li{font-size:12px;line-height:1.6;color:var(--ink-2);margin-bottom:5px}

/* Contact */
.contact{display:flex;flex-direction:column;gap:10px}
.contact .row{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-2)}
.contact .ic{width:30px;height:30px;flex:0 0 auto;border-radius:8px;background:#fdecdf;color:var(--accent-700);display:grid;place-items:center}
.contact .ic svg{width:16px;height:16px}
.mapbox{margin-top:6px;flex:1;min-height:120px;border-radius:10px;border:1px dashed #cfd4dc;background:
  linear-gradient(45deg,#f6f7f9 25%,transparent 25%),linear-gradient(-45deg,#f6f7f9 25%,transparent 25%),
  linear-gradient(45deg,transparent 75%,#f6f7f9 75%),linear-gradient(-45deg,transparent 75%,#f6f7f9 75%);
  background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;
  display:grid;place-items:center;color:var(--muted);font-size:12px;font-weight:600}

.tag-demo{margin-left:2px;flex:0 0 auto;font-size:10.5px;font-weight:800;letter-spacing:.6px;color:var(--accent-700);background:#fdecdf;border:1px solid #f7d9c1;padding:3px 8px;border-radius:999px;text-transform:uppercase;align-self:center}
@media (max-width:560px){ .tag-demo{display:none} }

/* Toast */
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(12px);background:var(--ink);color:#fff;font-size:12.5px;font-weight:600;padding:10px 16px;border-radius:10px;box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:.25s ease;z-index:30}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Tính năng thêm ===== */
.modal{position:fixed;inset:0;z-index:40;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal-bd{position:absolute;inset:0;background:rgba(14,24,48,.5);backdrop-filter:blur(2px)}
.modal-card{position:relative;background:var(--panel);border-radius:16px;box-shadow:0 24px 60px rgba(14,24,48,.35);width:min(860px,95vw);max-height:86vh;display:flex;flex-direction:column;overflow:hidden}
.modal-hd{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.modal-hd h3{margin:0;font-size:16px;color:var(--ink)}
.modal-hd .x{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:var(--panel);cursor:pointer;display:grid;place-items:center;color:var(--ink-2)}
.modal-hd .x:hover{background:var(--panel-2)}
.modal-grid{padding:16px 18px;overflow:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(116px,1fr));gap:12px}
.pcard{border:1px solid var(--line);border-radius:12px;background:var(--panel-2);cursor:pointer;padding:0;overflow:hidden;transition:.15s ease;text-align:left;font-family:inherit}
.pcard:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.pcard.active{border-color:var(--accent);box-shadow:0 0 0 3px rgba(243,112,33,.18)}
.pcard .ph{height:72px;background:linear-gradient(135deg,#fff,#eef1f5);display:grid;place-items:center;color:var(--accent-700);font-size:22px;font-weight:800;border-bottom:1px solid var(--line)}
.pcard .pl{padding:8px 10px;font-size:12px;font-weight:600;color:var(--ink-2);display:flex;justify-content:space-between;gap:6px;align-items:center}
.pcard .pl b{color:var(--muted);font-weight:700}

.cta-fab{position:absolute;right:16px;bottom:16px;z-index:6;display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border:none;border-radius:999px;padding:11px 18px;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;box-shadow:0 8px 22px rgba(243,112,33,.42);transition:.15s ease}
.cta-fab:hover{background:var(--accent-600);transform:translateY(-1px)}
.cta-fab svg{width:18px;height:18px}
@media (max-width:560px){ .cta-fab{padding:10px 14px;font-size:13px;right:10px;bottom:10px} }

.apbtn{width:36px;height:36px;flex:0 0 auto;border-radius:999px;border:1px solid var(--line);background:var(--panel);cursor:pointer;display:grid;place-items:center;color:var(--ink-2);transition:.15s ease}
.apbtn:hover{border-color:var(--accent);color:var(--accent-700)}
.apbtn.on{background:var(--accent);border-color:var(--accent);color:#fff}
.apbtn svg{width:18px;height:18px}

/* Fullscreen tweaks */
.reader:fullscreen{height:100vh}
.reader:-webkit-full-screen{height:100vh}

/* Responsive */
@media (max-width:720px){
  .stage-wrap{padding:14px 8px}
  .nav{width:40px;height:40px}
  .nav.prev{left:4px}.nav.next{right:4px}
  .brand-txt .s{display:none}
  .tools .lbl{display:none}
  .btn.dl .lbl{display:none}
  .p-inner{padding:24px 20px}
  .cover .cv-title{font-size:32px}
}
@media (max-width:420px){
  .toolbar{padding:8px 10px}
  .zoomwrap{display:none}
}

/* ===== Loader (PDF.js) ===== */
html,body{height:auto;min-height:100%}
body{margin:0;background:#e9ebef}
.fsc-loader{position:absolute;inset:0;z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:radial-gradient(1200px 620px at 50% -8%,#ffffff 0%,#eef0f3 55%,#e5e7ec 100%)}
.fsc-loader.hidden{display:none}
.fsc-loader .lg{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent-700));display:grid;place-items:center;color:#fff;box-shadow:var(--shadow-md)}
.fsc-loader .lg svg{width:30px;height:30px}
.fsc-loader .lbar{width:min(260px,60%);height:6px;border-radius:4px;background:#e3e6ea;overflow:hidden}
.fsc-loader .lbar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-700));transition:width .2s ease}
.fsc-loader .ltxt{font-size:12.5px;color:var(--muted);font-weight:600}
.fscsotay-err{padding:20px;font-family:system-ui,sans-serif;color:#8a2b2b;background:#fdecec;border-radius:10px}

/* PDF page images */
.page img{width:100%;height:100%;object-fit:cover;display:block}

/* ===== Compact / tối ưu diện tích (đè lên rule ở trên) ===== */
.toolbar{padding:7px 14px}
.logo{width:32px;height:32px;border-radius:9px}
.logo svg{width:18px;height:18px}
.brand-txt .t{font-size:14px}
.brand-txt .s{font-size:11px}
.btn{height:32px;min-width:32px;font-size:12.5px}
.btn svg{width:16px;height:16px}
.zoomwrap{padding:2px}
.nav{width:38px;height:38px}
.nav svg{width:20px;height:20px}
.nav.prev{left:8px}.nav.next{right:8px}
.stage-wrap{padding:8px 48px}
.viewport{padding:8px}
.footbar{padding:5px 12px 6px}
.pbar{margin:0 auto 5px;max-width:440px}
.pager{gap:10px;margin-bottom:5px}
.pageinput{height:30px}
.apbtn{width:32px;height:32px}
.thumbs{gap:6px;padding:2px 2px 3px}
.thumb{width:40px;height:54px;border-width:1.5px}
.thumb.active{box-shadow:0 0 0 2px rgba(243,112,33,.22)}
.thumb .tn{font-size:9px}
@media (max-width:720px){
  .stage-wrap{padding:6px 38px}
  .nav{width:34px;height:34px}
  .thumb{width:36px;height:48px}
}

/* ===== Zoom / Pan ===== */
.fsc-zoomlayer{transform-origin:0 0;will-change:transform;width:100%}
.viewport.zoomed{overflow:hidden;justify-content:flex-start;align-items:flex-start;touch-action:none;cursor:grab}
.viewport.zoomed .stage{margin:0}
.viewport.zoomed.grabbing{cursor:grabbing}