:root{--nav:#0d3564;--blue:#2e86de;--bg:#f3f7fc;--text:#142b45;--muted:#6c7f95;--line:#d9e4f0;--green:#129b6c;--red:#d94b55;--amber:#e39a10}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,#0b2f5b,#154b82);color:#fff;padding:18px 12px;position:sticky;top:0;height:100vh}.brand{display:flex;gap:10px;align-items:center;padding:8px 10px 18px}.logo{width:48px;height:48px;border-radius:12px;background:#fff;display:grid;place-items:center;font-weight:900;color:#0d3564}.userbox{background:#ffffff12;border:1px solid #ffffff22;padding:12px;border-radius:14px;margin-bottom:15px}.nav a{display:flex;gap:10px;align-items:center;padding:11px 12px;border-radius:10px;margin:4px 0;font-weight:700;font-size:14px}.nav a.active,.nav a:hover{background:#2e86de}.content{padding:24px 28px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.top h1{margin:0;font-size:28px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 4px 18px #174d7a0a}.stat b{font-size:28px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:end;margin-bottom:14px}.btn{border:0;border-radius:10px;padding:10px 14px;font-weight:800;cursor:pointer;background:#e9f3fe;color:#145ea8}.btn.primary{background:#2176c9;color:#fff}.btn.green{background:#e8f7ef;color:#08794e}.btn.red{background:#fdecee;color:#b92235}.btn.amber{background:#fff4dd;color:#9d6500}input,select,textarea{width:100%;padding:10px 11px;border:1px solid #cfddec;border-radius:10px;background:#fff;color:#132a43}textarea{min-height:100px}.field{min-width:170px}.field label{display:block;font-size:12px;font-weight:800;margin:0 0 5px;color:#536b85}.tablewrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}table{border-collapse:collapse;width:100%;min-width:760px}th,td{padding:12px 13px;border-bottom:1px solid #e4edf6;text-align:left;font-size:13px}th{background:#f5f8fc;color:#47617d;font-size:12px}.badge{display:inline-block;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:800}.badge.green{background:#e2f7ee;color:#08794e}.badge.red{background:#fdecee;color:#b92235}.badge.amber{background:#fff2d7;color:#9d6500}.flash{padding:12px 14px;border-radius:10px;margin-bottom:12px}.flash.success{background:#e8f7ef}.flash.error{background:#fdecee}.login{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#0d3564,#2e86de)}.loginbox{width:min(430px,92vw);background:#fff;border-radius:20px;padding:28px;box-shadow:0 25px 60px #0018}.loginbox h1{margin-top:0}.question{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;margin:12px 0}.option{display:block;padding:8px 10px;border:1px solid #dbe6f1;border-radius:10px;margin:7px 0}.timer{font-weight:900;background:#fff2d7;color:#8c5a00;padding:9px 12px;border-radius:10px;position:sticky;top:10px}.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.small{font-size:12px}.right{text-align:right}.empty{padding:35px;text-align:center;color:var(--muted)}@media(max-width:1000px){.layout{grid-template-columns:84px 1fr}.brand span,.userbox .hide,.nav span{display:none}.grid{grid-template-columns:repeat(2,1fr)}.sidebar{padding:12px 8px}.content{padding:18px}}@media(max-width:650px){.layout{display:block}.sidebar{position:relative;height:auto}.nav{display:flex;overflow:auto}.nav a{min-width:max-content}.brand span,.userbox{display:none}.grid,.two{grid-template-columns:1fr}.content{padding:14px}.top h1{font-size:23px}}
/* v1.1 - Ujian PDF + lembar jawaban Android */
.pdf-preview iframe{width:100%;height:520px;border:1px solid var(--line);border-radius:12px;background:#eef3f8}.answer-key-grid{display:grid;grid-template-columns:repeat(8,minmax(86px,1fr));gap:10px;margin:16px 0}.key-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;display:grid;gap:7px;text-align:center}.key-card select,.key-card input{padding:8px;text-align:center}.sticky-actions{position:sticky;bottom:0;background:rgba(243,247,252,.95);backdrop-filter:blur(10px);padding:12px 0;display:flex;gap:8px;z-index:20}
.exam-body{background:#eef4fb}.exam-page{max-width:1500px;margin:auto;padding:14px}.exam-top{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 18px;position:sticky;top:8px;z-index:40;box-shadow:0 6px 24px #1232}.exam-top h1{font-size:22px;margin:0 0 4px}.pdf-exam-shell{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(390px,.65fr);gap:14px;margin-top:14px;align-items:start}.pdf-panel,.answer-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px}.pdf-panel{position:sticky;top:92px}.pdf-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px}.pdf-frame{display:block;width:100%;height:calc(100vh - 180px);min-height:560px;border:0;border-radius:10px;background:#e8eef5}.pdf-fallback{padding:10px 4px 0}.answer-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}.answer-head h2{font-size:18px;margin:0 0 4px}.answered-count{min-width:74px;text-align:center;background:#e8f7ef;color:#08794e;border-radius:12px;padding:9px;font-weight:800}.answer-sheet{display:grid;grid-template-columns:1fr 1fr;gap:8px}.answer-row{display:flex;align-items:center;gap:8px;border:1px solid #e0e9f2;border-radius:12px;padding:8px;background:#fbfdff}.answer-no{width:30px;height:30px;border-radius:9px;background:#e9f3fe;color:#145ea8;display:grid;place-items:center;font-weight:900;flex:0 0 auto}.answer-options{display:flex;gap:5px;flex-wrap:nowrap}.bubble{cursor:pointer}.bubble input{display:none}.bubble span{display:grid;place-items:center;width:30px;height:30px;border:1px solid #cbd9e8;border-radius:50%;font-weight:800;color:#48627d;background:#fff}.bubble.selected span{background:#2176c9;border-color:#2176c9;color:#fff;box-shadow:0 0 0 3px #dcecff}.submit-zone{display:flex;justify-content:space-between;align-items:center;gap:12px;position:sticky;bottom:0;margin-top:14px;padding:12px;background:#fff;border-top:1px solid var(--line)}.submit-exam{min-width:160px}.mobile-exam-tabs{display:none}
@media(max-width:1100px){.answer-key-grid{grid-template-columns:repeat(5,minmax(80px,1fr))}.pdf-exam-shell{grid-template-columns:1fr 420px}.answer-sheet{grid-template-columns:1fr}}
@media(max-width:780px){.answer-key-grid{grid-template-columns:repeat(3,minmax(78px,1fr))}.exam-page{padding:8px}.exam-top{top:4px;padding:10px 12px;border-radius:12px}.exam-top h1{font-size:17px}.exam-top .muted{font-size:11px}.timer{font-size:14px;padding:8px}.mobile-exam-tabs{display:grid;grid-template-columns:1fr 1fr;gap:7px;position:sticky;top:77px;z-index:35;background:#eef4fb;padding:8px 0}.mobile-exam-tabs button{border:1px solid #cddceb;background:#fff;color:#174b7d;border-radius:10px;padding:10px 8px;font-weight:800}.mobile-exam-tabs button.active{background:#2176c9;color:#fff;border-color:#2176c9}.pdf-exam-shell{display:block;margin-top:0}.exam-panel{display:none;position:static!important}.exam-panel.active{display:block}.pdf-panel,.answer-panel{border-radius:12px;padding:9px}.pdf-toolbar{align-items:flex-start}.pdf-toolbar b{display:none}.pdf-frame{height:calc(100vh - 190px);min-height:520px}.answer-sheet{grid-template-columns:1fr}.answer-row{justify-content:space-between;padding:9px}.answer-options{gap:7px}.bubble span{width:34px;height:34px}.submit-zone{bottom:0;padding:10px 2px}.submit-zone>div{display:none}.submit-exam{width:100%;min-width:0;padding:13px}.pdf-fallback{font-size:11px}}
@media(max-width:390px){.answer-options{gap:4px}.bubble span{width:31px;height:31px}.answer-no{width:28px;height:28px}.mobile-exam-tabs button{font-size:12px}}

/* v1.5 Android PDF viewer berbasis PDF.js */
.mobile-pdf-reader{border:1px solid #dce6f0;border-radius:12px;background:#f5f8fc;overflow:hidden}.pdf-reader-controls{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center;padding:10px;background:#fff;border-bottom:1px solid #dce6f0}.pdf-reader-controls .btn:last-child{justify-self:end}.pdf-page-info{text-align:center;color:#234d75;font-size:13px;white-space:nowrap}.pdf-canvas-wrap{position:relative;min-height:420px;padding:10px;display:flex;justify-content:center;align-items:flex-start;overflow:auto;background:#d8e0e8}.pdf-canvas-wrap canvas{max-width:100%;height:auto!important;background:#fff;box-shadow:0 3px 14px #1233;border-radius:3px}.pdf-loading{position:absolute;top:22px;left:50%;transform:translateX(-50%);z-index:4;background:#fff;padding:10px 14px;border-radius:10px;font-weight:800;color:#235d91;box-shadow:0 2px 12px #1232}.pdf-error{margin:auto;max-width:520px;padding:18px;background:#fff3f3;border:1px solid #f0bcbc;border-radius:12px;color:#8a2323;text-align:center;display:grid;gap:7px}.pdf-reader-bottom{border-top:1px solid #dce6f0;border-bottom:0}.pdf-reader-bottom .btn.primary{justify-self:center}.pdf-reader-controls button:disabled{opacity:.45;cursor:not-allowed}
@media(max-width:780px){.pdf-toolbar{display:grid;grid-template-columns:1fr}.pdf-toolbar .btn{width:100%;text-align:center;padding:13px}.pdf-canvas-wrap{min-height:calc(100vh - 285px);padding:5px}.pdf-reader-controls{grid-template-columns:1fr auto 1fr;padding:7px 5px;gap:5px}.pdf-reader-controls .btn{padding:9px 7px;font-size:12px}.pdf-page-info{font-size:11px}.pdf-reader-bottom{position:sticky;bottom:0;z-index:8}.pdf-fallback{padding-bottom:6px}}


/* v1.6 - Fullscreen PDF internal, tanpa membuka tab/file baru */
.pdf-panel:fullscreen,
.pdf-panel:-webkit-full-screen,
.pdf-panel.pdf-fullscreen-fallback{
  position:fixed!important;
  inset:0!important;
  width:100vw!important;
  height:100vh!important;
  max-width:none!important;
  max-height:none!important;
  z-index:99999!important;
  margin:0!important;
  border:0!important;
  border-radius:0!important;
  padding:10px!important;
  background:#eef4fb!important;
  overflow:hidden!important;
  display:flex!important;
  flex-direction:column!important;
}
.pdf-panel:fullscreen .pdf-toolbar,
.pdf-panel:-webkit-full-screen .pdf-toolbar,
.pdf-panel.pdf-fullscreen-fallback .pdf-toolbar{
  flex:0 0 auto;
  background:#fff;
  padding:8px 10px;
  margin:0 0 8px;
  border-radius:10px;
}
.pdf-panel:fullscreen .mobile-pdf-reader,
.pdf-panel:-webkit-full-screen .mobile-pdf-reader,
.pdf-panel.pdf-fullscreen-fallback .mobile-pdf-reader{
  flex:1 1 auto;
  min-height:0;
  display:flex;
  flex-direction:column;
  border-radius:10px;
}
.pdf-panel:fullscreen .pdf-canvas-wrap,
.pdf-panel:-webkit-full-screen .pdf-canvas-wrap,
.pdf-panel.pdf-fullscreen-fallback .pdf-canvas-wrap{
  flex:1 1 auto;
  min-height:0!important;
  height:auto!important;
  overflow:auto;
}
.pdf-panel:fullscreen .pdf-reader-controls,
.pdf-panel:-webkit-full-screen .pdf-reader-controls,
.pdf-panel.pdf-fullscreen-fallback .pdf-reader-controls{
  flex:0 0 auto;
}
.pdf-panel:fullscreen .pdf-fallback,
.pdf-panel:-webkit-full-screen .pdf-fallback,
.pdf-panel.pdf-fullscreen-fallback .pdf-fallback{display:none}
.pdf-panel:fullscreen .pdf-toolbar b,
.pdf-panel:-webkit-full-screen .pdf-toolbar b,
.pdf-panel.pdf-fullscreen-fallback .pdf-toolbar b{display:block!important}
body.pdf-overlay-open{overflow:hidden}
@media(max-width:780px){
  .pdf-panel:fullscreen,
  .pdf-panel:-webkit-full-screen,
  .pdf-panel.pdf-fullscreen-fallback{padding:5px!important}
  .pdf-panel:fullscreen .pdf-toolbar,
  .pdf-panel:-webkit-full-screen .pdf-toolbar,
  .pdf-panel.pdf-fullscreen-fallback .pdf-toolbar{display:flex!important;align-items:center!important}
  .pdf-panel:fullscreen .pdf-toolbar .btn,
  .pdf-panel:-webkit-full-screen .pdf-toolbar .btn,
  .pdf-panel.pdf-fullscreen-fallback .pdf-toolbar .btn{width:auto!important;padding:10px 12px}
  .pdf-panel:fullscreen .pdf-canvas-wrap,
  .pdf-panel:-webkit-full-screen .pdf-canvas-wrap,
  .pdf-panel.pdf-fullscreen-fallback .pdf-canvas-wrap{min-height:0!important}
}


/* v1.7 - Zoom PDF internal */
.pdf-zoom-controls{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 10px;
  background:#f7faff;
  border-bottom:1px solid #dce6f0;
}
.pdf-zoom-value{
  min-width:64px;
  text-align:center;
  padding:8px 10px;
  border:1px solid #cbd9e8;
  border-radius:10px;
  background:#fff;
  color:#174b7d;
  font-weight:900;
  font-variant-numeric:tabular-nums;
}
.pdf-zoom-btn{min-width:92px}
.pdf-canvas-wrap{display:block!important;text-align:center;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.pdf-canvas-wrap canvas{max-width:none!important;margin:0 auto;display:block}
.pdf-panel:fullscreen .pdf-zoom-controls,
.pdf-panel:-webkit-full-screen .pdf-zoom-controls,
.pdf-panel.pdf-fullscreen-fallback .pdf-zoom-controls{flex:0 0 auto}
@media(max-width:780px){
  .pdf-zoom-controls{position:sticky;top:0;z-index:10;gap:5px;padding:6px 5px;justify-content:space-between}
  .pdf-zoom-controls .btn{padding:9px 7px;font-size:12px}
  .pdf-zoom-btn{min-width:0;flex:1 1 0}
  .pdf-zoom-value{min-width:58px;padding:8px 6px;font-size:12px}
  #pdfZoomReset{white-space:nowrap}
}
@media(max-width:390px){
  .pdf-zoom-controls{gap:3px}
  .pdf-zoom-controls .btn{padding:8px 5px;font-size:11px}
  .pdf-zoom-value{min-width:52px;font-size:11px}
}


/* v1.8 - Pinch Zoom dua jari */
.pdf-canvas-wrap{
  touch-action:pan-x pan-y;
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
}
.pdf-canvas-wrap canvas{
  transform-origin:center top;
  transition:transform .05s linear;
  user-select:none;
  -webkit-user-select:none;
  -webkit-touch-callout:none;
}
.pdf-canvas-wrap canvas.pinch-active{
  transition:none;
  will-change:transform;
}
.pdf-pinch-hint{
  align-self:center;
  font-size:12px;
  font-weight:800;
  color:#52708d;
  white-space:nowrap;
}
@media(max-width:780px){
  .pdf-pinch-hint{
    grid-column:1/-1;
    text-align:center;
    padding-top:2px;
    font-size:11px;
  }
}


/* v1.8.2 - zoom hanya dengan gesture dua jari */
#pdfZoomIn,#pdfZoomOut,.pdf-zoom-value{display:none!important}
.pdf-zoom-controls.pdf-gesture-only{display:flex;gap:10px;align-items:center;justify-content:flex-start;flex-wrap:wrap}