:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#132033;background:#f5f7fb;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--ink: #132033;--muted: #64748b;--line: #dce4ef;--panel: rgba(255, 255, 255, .9);--panel-solid: #ffffff;--blue: #2563eb;--teal: #0891b2;--green: #16a34a;--amber: #d97706;--rose: #e11d48;--shadow: 0 22px 60px rgba(15, 23, 42, .14)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(125deg,rgba(37,99,235,.12),transparent 34%),linear-gradient(210deg,rgba(8,145,178,.14),transparent 38%),#f5f7fb}button,input{font:inherit}button{border:0}.app-shell{min-height:100vh;padding:24px}.language-toggle{position:fixed;z-index:18;top:18px;right:18px;display:inline-flex;gap:4px;padding:5px;border:1px solid rgba(203,213,225,.76);border-radius:999px;background:#ffffffdb;box-shadow:0 12px 28px #0f172a1f;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.language-toggle button{min-width:78px;min-height:34px;padding:0 12px;border-radius:999px;color:#475569;background:transparent;cursor:pointer;font-size:13px;font-weight:900}.language-toggle button.active{color:#fff;background:linear-gradient(135deg,var(--blue),var(--teal));box-shadow:0 8px 18px #2563eb33}.toast{position:fixed;z-index:20;top:18px;left:50%;width:min(92vw,520px);transform:translate(-50%);padding:14px 18px;border:1px solid rgba(225,29,72,.24);border-radius:14px;color:#9f1239;background:#fff1f2f5;box-shadow:0 16px 34px #9f123929;font-weight:800}.loading-bar{position:fixed;z-index:25;top:0;left:0;height:4px;width:100%;overflow:hidden;background:#2563eb1f}.loading-bar:after{content:"";display:block;width:45%;height:100%;background:linear-gradient(90deg,var(--teal),var(--blue),var(--amber));animation:loading 1s ease-in-out infinite}@keyframes loading{0%{transform:translate(-100%)}to{transform:translate(230%)}}.access-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:28px;align-items:stretch;width:min(1180px,100%);min-height:calc(100vh - 48px);margin:0 auto}.hero-panel,.access-card,.portal-frame,.question-panel,.exam-sidebar,.result-card,.lobby-card,.rules-card,.info-card,.progress-card{border:1px solid rgba(220,228,239,.86);background:var(--panel);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.hero-panel{display:flex;flex-direction:column;justify-content:flex-end;min-height:620px;padding:clamp(32px,6vw,68px);border-radius:28px;color:#fff;background:linear-gradient(150deg,#0a1c34f0,#1f5f85cc),linear-gradient(45deg,#0f172a,#2563eb);overflow:hidden}.hero-panel h1,.exam-hero h1,.question-top h1,.result-card h1{margin:0;letter-spacing:0}.hero-panel h1{max-width:680px;font-size:clamp(42px,7vw,82px);line-height:.96}.hero-panel p{max-width:560px;margin:22px 0 0;color:#ffffffc7;font-size:18px;line-height:1.6}.eyebrow{margin-bottom:14px;color:var(--teal);font-size:12px;font-weight:900;letter-spacing:0;text-transform:uppercase}.hero-panel .eyebrow{color:#7dd3fc}.workflow-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:44px}.workflow-strip span{padding:12px 10px;border:1px solid rgba(255,255,255,.18);border-radius:12px;background:#ffffff1a;color:#ffffffdb;font-size:13px;font-weight:800;text-align:center}.access-card{align-self:center;padding:34px;border-radius:24px}.card-icon{display:inline-grid;place-items:center;min-width:64px;min-height:52px;padding:0 14px;border-radius:14px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--teal));font-weight:900}.access-card h2{margin:22px 0 8px;color:var(--ink);font-size:34px}.login-card{margin-top:48px}.login-logo{display:inline-flex;align-items:center;justify-content:center;width:168px;min-height:58px;padding:10px 14px;border:1px solid rgba(203,213,225,.74);border-radius:16px;background:#fff;box-shadow:0 12px 26px #0f172a14}.login-logo img{display:block;width:100%;height:auto;max-height:42px;object-fit:contain}.student-strip{display:flex;align-items:center;justify-content:space-between;gap:14px}.student-name{display:inline-flex;max-width:100%;margin:10px 0 0;padding:8px 12px;border-radius:999px;color:#075985;background:#e0f2fe;font-size:13px;font-weight:900;overflow-wrap:anywhere}.compact-button{min-height:40px;padding:0 14px;border-radius:12px}.muted{color:var(--muted);line-height:1.55}label{display:grid;gap:9px;margin-top:20px;color:#334155;font-weight:850}input{width:100%;min-height:54px;padding:0 16px;border:1px solid #cbd5e1;border-radius:14px;color:var(--ink);background:#f8fafceb;outline:none;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}input:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px #2563eb21}.primary-button,.submit-button,.ghost-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:14px;cursor:pointer;font-weight:900;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.primary-button,.submit-button{color:#fff;background:linear-gradient(135deg,var(--blue),var(--teal));box-shadow:0 14px 28px #2563eb3d}.submit-button{background:linear-gradient(135deg,#0f172a,var(--blue))}.ghost-button{border:1px solid var(--line);color:#334155;background:#ffffffc2}.primary-button:hover,.submit-button:hover,.ghost-button:hover{transform:translateY(-1px)}button:disabled{cursor:not-allowed;opacity:.58;transform:none}.access-card .primary-button{width:100%;margin-top:24px}.secondary-action{width:100%;margin-top:12px}.notice{display:grid;gap:4px;margin-top:20px;padding:14px;border:1px solid #bae6fd;border-radius:14px;color:#075985;background:#f0f9ff}.notice.danger{border-color:#fecdd3;color:#9f1239;background:#fff1f2}.portal-frame{width:min(1180px,100%);margin:0 auto;padding:24px;border-radius:28px}.exam-hero{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;padding:22px;border-radius:22px;color:#fff;background:linear-gradient(135deg,#111827,#1d4ed8 58%,#0e7490)}.exam-hero h1{font-size:clamp(30px,5vw,54px);line-height:1.04}.exam-hero p{margin:10px 0 0;color:#ffffffc2}.exam-hero .ghost-button{color:#fff;border-color:#ffffff42;background:#ffffff1f}.status-pill{padding:10px 14px;border-radius:999px;color:#082f49;background:#e0f2fe;font-weight:900;white-space:nowrap}.status-pill.ready{color:#14532d;background:#dcfce7}.status-pill.waiting{color:#92400e;background:#fef3c7}.status-pill.ended,.status-pill.late,.status-pill.too-early{color:#9f1239;background:#ffe4e6}.lobby-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.info-card{display:grid;gap:8px;padding:18px;border-radius:18px;box-shadow:0 12px 28px #0f172a14}.info-card span{color:var(--muted);font-size:12px;font-weight:850;text-transform:uppercase}.info-card strong{color:var(--ink);font-size:22px}.lobby-card,.rules-card{margin-top:18px;padding:24px;border-radius:22px}.lobby-card{display:grid;grid-template-columns:1fr auto auto;gap:20px;align-items:center}.lobby-card h2,.rules-card h3{margin:0 0 8px;color:var(--ink)}.countdown-box{min-width:150px;padding:16px;border-radius:18px;color:#0f172a;background:#fef3c7;font-size:28px;font-weight:950;text-align:center}.rules-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.rule-item{display:flex;gap:10px;align-items:flex-start;padding:14px;border-radius:14px;color:#334155;background:#f8fafc;font-weight:750}.rule-item span{flex:0 0 10px;width:10px;height:10px;margin-top:7px;border-radius:50%;background:var(--teal)}.exam-layout{display:grid;grid-template-columns:minmax(270px,330px) minmax(0,1fr);gap:20px;width:min(1240px,100%);margin:0 auto;min-height:calc(100vh - 48px)}.exam-sidebar,.question-panel{border-radius:24px}.exam-sidebar{display:flex;flex-direction:column;gap:16px;padding:20px}.exam-mini-header{padding:20px;border-radius:18px;color:#fff;background:linear-gradient(135deg,#0f172a,#1d4ed8)}.exam-mini-header h2{margin:0 0 18px;font-size:22px;line-height:1.15}.timer{display:inline-flex;padding:9px 12px;border-radius:999px;color:#082f49;background:#e0f2fe;font-size:24px;font-weight:950}.timer.warn{color:#92400e;background:#fef3c7}.timer.danger{color:#9f1239;background:#ffe4e6}.progress-card{padding:16px;border-radius:18px;box-shadow:0 12px 28px #0f172a14}.progress-row{display:flex;align-items:center;justify-content:space-between;color:#334155;font-size:14px;font-weight:850}.progress-track{height:10px;margin-top:12px;overflow:hidden;border-radius:999px;background:#e2e8f0}.progress-track span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--teal),var(--blue));transition:width .22s ease}.question-map{display:grid;grid-template-columns:repeat(auto-fill,minmax(42px,1fr));gap:8px}.question-map button{aspect-ratio:1;border:1px solid var(--line);border-radius:12px;color:#475569;background:#fff;cursor:pointer;font-weight:900}.question-map button.done{color:#14532d;border-color:#bbf7d0;background:#dcfce7}.question-map button.active{color:#fff;border-color:var(--blue);background:var(--blue);box-shadow:0 12px 20px #2563eb38}.desktop-submit{width:100%;margin-top:auto}.question-panel{display:flex;flex-direction:column;min-height:100%;padding:clamp(22px,4vw,44px)}.question-top{display:flex;gap:20px;align-items:flex-start;justify-content:space-between}.question-top h1{max-width:820px;color:var(--ink);font-size:clamp(28px,4.2vw,52px);line-height:1.12}.type-chip{flex:0 0 auto;padding:10px 13px;border-radius:999px;color:#075985;background:#e0f2fe;font-size:13px;font-weight:900}.answer-list{display:grid;gap:14px;margin-top:34px}.answer-option{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:center;min-height:72px;padding:14px 18px;border:1px solid #dbe4ee;border-radius:18px;color:#263548;background:#fff;cursor:pointer;text-align:left;box-shadow:0 10px 22px #0f172a0f;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease,background .18s ease}.answer-option:hover{transform:translateY(-1px);border-color:#93c5fd;box-shadow:0 16px 30px #2563eb1f}.answer-option.selected{border-color:#38bdf8;background:linear-gradient(90deg,#eff6ff,#ecfeff);box-shadow:0 18px 34px #0e749029}.answer-mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid #cbd5e1;border-radius:14px;color:#fff;background:#f8fafc;font-size:12px;font-weight:950}.answer-option.selected .answer-mark{border-color:transparent;background:linear-gradient(135deg,var(--green),var(--teal))}.answer-mark svg,.review-option svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round}.question-actions{display:flex;gap:12px;justify-content:space-between;margin-top:auto;padding-top:28px}.result-layout{display:grid;place-items:center;min-height:calc(100vh - 48px)}.result-card{width:min(680px,100%);padding:clamp(26px,5vw,48px);border-radius:28px;text-align:center}.result-card h1{margin-top:22px;color:var(--ink);font-size:clamp(34px,6vw,58px)}.result-score{margin:28px auto;padding:26px;border-radius:24px;color:#fff;background:linear-gradient(135deg,#0f172a,var(--blue),var(--teal))}.result-score span{display:block;font-size:clamp(56px,14vw,110px);font-weight:950;line-height:.9}.result-score p{margin:12px 0 0;color:#ffffffc7;font-weight:850}.compact{grid-template-columns:repeat(2,1fr);margin-bottom:24px}.history-frame,.review-frame{display:grid;gap:18px}.history-hero{margin-bottom:0}.empty-state{display:grid;place-items:center;min-height:220px;padding:28px;border:1px dashed #cbd5e1;border-radius:22px;color:var(--muted);background:#ffffffb8;font-size:18px;font-weight:900;text-align:center}.history-list,.review-list{display:grid;gap:16px}.history-card,.review-question{padding:22px;border:1px solid rgba(220,228,239,.92);border-radius:22px;background:#ffffffe0;box-shadow:0 14px 36px #0f172a14}.history-main{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:start}.history-main h2,.review-question h2{margin:10px 0 8px;color:var(--ink);font-size:clamp(24px,3vw,34px);line-height:1.15}.history-main p{margin:0;color:var(--muted);font-weight:800}.history-pills{display:flex;flex-wrap:wrap;gap:8px}.history-pills span{padding:7px 10px;border-radius:999px;color:#475569;background:#f1f5f9;font-size:12px;font-weight:900}.history-pills span.submitted{color:#14532d;background:#dcfce7}.history-stats{margin-bottom:0}.review-summary{margin-top:0}.review-question{border-left:5px solid #fda4af}.review-question.correct{border-left-color:#86efac}.review-question-top{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:start}.review-question-top span{padding:9px 12px;border-radius:999px;color:#9f1239;background:#ffe4e6;font-size:13px;font-weight:950}.review-question.correct .review-question-top span{color:#14532d;background:#dcfce7}.review-options{display:grid;gap:10px;margin-top:18px}.review-option{display:grid;grid-template-columns:48px 1fr;gap:12px;align-items:center;padding:12px 14px;border:1px solid #e2e8f0;border-radius:16px;background:#f8fafc}.review-option span{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;color:#64748b;background:#fff;font-size:11px;font-weight:950}.review-option p{margin:0;color:#334155;font-weight:800;line-height:1.45}.review-option.selected{border-color:#93c5fd;background:#eff6ff}.review-option.correct-answer{border-color:#86efac;background:#f0fdf4}.review-option.correct-answer span{color:#fff;background:linear-gradient(135deg,var(--green),var(--teal))}.review-option.selected:not(.correct-answer) span{color:#fff;background:var(--rose)}.answer-note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px}.answer-note{display:grid;gap:6px;padding:13px;border-radius:14px;color:#334155;background:#f8fafc}.answer-note span{color:var(--muted);font-size:12px;font-weight:900;text-transform:uppercase}.answer-note strong{color:var(--ink);overflow-wrap:anywhere}.lang-si{font-size:15px}.lang-si .hero-panel h1{font-size:clamp(34px,6vw,66px);line-height:1.08}.lang-si .exam-hero h1{font-size:clamp(26px,4.5vw,46px)}.lang-si .question-top h1,.lang-si .result-card h1{font-size:clamp(25px,3.8vw,44px);line-height:1.22}.lang-si .access-card h2,.lang-si .history-main h2,.lang-si .review-question h2{font-size:clamp(23px,2.8vw,30px);line-height:1.24}.lang-si .primary-button,.lang-si .submit-button,.lang-si .ghost-button,.lang-si input,.lang-si label,.lang-si .answer-option,.lang-si .review-option p,.lang-si .notice,.lang-si .rule-item,.lang-si .muted{font-size:.94em}.lang-si .eyebrow,.lang-si .type-chip,.lang-si .status-pill,.lang-si .history-pills span,.lang-si .info-card span,.lang-si .answer-note span{font-size:11px}@media(max-width:920px){.app-shell{padding:14px}.access-layout,.exam-layout{grid-template-columns:1fr;min-height:auto}.hero-panel{min-height:420px;border-radius:22px}.access-card{align-self:stretch}.portal-frame{padding:14px}.exam-hero,.lobby-card,.question-top{grid-template-columns:1fr}.exam-hero{display:grid}.status-pill,.type-chip{justify-self:flex-start}.lobby-grid,.rules-list{grid-template-columns:repeat(2,1fr)}.exam-sidebar{position:static}.desktop-submit{display:none}}@media(max-width:560px){.app-shell{padding:64px 10px 10px}.language-toggle{top:10px;right:10px;left:10px;justify-content:stretch}.language-toggle button{flex:1;min-width:0}.hero-panel,.access-card,.portal-frame,.question-panel,.exam-sidebar,.result-card{border-radius:18px}.hero-panel{padding:28px}.hero-panel h1{font-size:40px}.workflow-strip,.lobby-grid,.rules-list,.compact{grid-template-columns:1fr}.access-card{padding:24px}.lobby-card{align-items:stretch}.countdown-box{width:100%}.question-map{grid-template-columns:repeat(6,1fr)}.question-top h1{font-size:28px}.answer-option{grid-template-columns:34px 1fr;min-height:64px;padding:12px}.answer-mark{width:34px;height:34px;border-radius:11px}.question-actions{flex-direction:column}.question-actions button{width:100%}.history-main,.review-question-top,.answer-note-grid{grid-template-columns:1fr}.history-main .primary-button{width:100%}}