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.exam-action-btn{background:linear-gradient(135deg,#a855f7,#6366f1);color:#ffffff;border-color:#a855f7;box-shadow:0 4px 12px rgba(168,85,247,0.35);}.exam-card:hover .arrow-circle{transform:translateX(3px);background:rgba(255,255,255,0.25);}.btn-link{background:none;border:none;color:var(--text-muted);font-family:var(--mono);font-size:13px;cursor:pointer;padding:8px 0;display:inline-flex;align-items:center;gap:6px;}.btn-link:hover{color:var(--accent);}.badge-error-tag{background:rgba(255,170,0,0.15);border:1px solid rgba(255,170,0,0.35);color:#ffb700;font-size:11.5px;font-weight:700;padding:3px 8px;border-radius:10px;margin-left:8px;display:inline-flex;align-items:center;gap:4px;}.app-disclaimer{max-width:540px;margin:30px auto 0;padding:0 12px env(safe-area-inset-bottom);font-size:11.5px;line-height:1.5;color:var(--text-muted);text-align:center;}@media (max-width:640px){.topbar{padding:10px 14px;}.topbar-brand{font-size:12px;}#app{padding:14px 10px 90px;}.panel-body{padding:16px 14px;}.setup-row{flex-direction:column;align-items:flex-start;gap:6px;}.setup-row select,.setup-row input{width:100%;max-width:100%;}.actions{flex-direction:column;}.actions .btn{width:100%;}.quiz-meta{flex-wrap:wrap;gap:8px;}.screen#screen-quiz .nav-row{position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-top:1px solid var(--border);padding:10px 14px;margin-top:0;z-index:90;box-shadow:0 -4px 16px rgba(0,0,0,0.12);}.option{padding:14px 12px;}}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:rgba(0,0,0,0.65);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:999;padding:20px;animation:fadeIn 0.2s ease;}.modal-card{background:var(--surface);border:1px solid var(--border-strong);border-radius:16px;width:100%;max-width:440px;box-shadow:0 20px 50px rgba(0,0,0,0.35);overflow:hidden;animation:slideUp 0.25s cubic-bezier(0.16,1,0.3,1);}@keyframes 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rgba(78,201,176,0.4);}.result-status-card.status-fail{background:linear-gradient(135deg,rgba(244,71,71,0.18),rgba(239,68,68,0.08));border:1px solid rgba(244,71,71,0.4);}.status-card-icon{font-size:38px;}.status-card-title{font-size:22px;font-weight:800;margin:0 0 4px;letter-spacing:-0.01em;}.status-pass .status-card-title{color:var(--success);}.status-fail .status-card-title{color:var(--danger);}.status-card-desc{font-size:14px;margin:0;color:var(--text);line-height:1.5;}.result-metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:24px;}.metric-card{background:var(--surface-alt);border:1px solid var(--border);border-radius:10px;padding:14px 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solid var(--border-strong);}.initial-loading-card{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:56px 24px;background:rgba(30,41,59,0.55);border:1px solid rgba(255,255,255,0.1);border-radius:20px;backdrop-filter:blur(16px);text-align:center;margin:20px auto;width:100%;max-width:580px;gap:20px;box-shadow:0 12px 36px rgba(0,0,0,0.25);}[data-theme="light"] .initial-loading-card{background:rgba(255,255,255,0.85);border-color:#e2e8f0;box-shadow:0 6px 20px rgba(0,0,0,0.06);}.loading-spinner-ring{width:52px;height:52px;border:4px solid rgba(56,189,248,0.18);border-top-color:#38bdf8;border-radius:50%;animation:spinRing 0.85s linear infinite;}@keyframes spinRing{0%{transform:rotate(0deg);}100%{transform:rotate(360deg);}}.initial-loading-card h3{font-size:19px;font-weight:700;color:var(--text-bright);margin:0 0 6px 0;letter-spacing:-0.01em;}.initial-loading-card p{font-size:13.5px;color:var(--text-muted);margin:0;max-width:440px;line-height:1.55;}