:root{--navy:#123047;--teal:#078ca4;--cyan:#29b7c7;--pale:#eefbfc;--grey:#5f6b76;--danger:#b52525;--good:#0f7d4f;--warn:#a66500;--card:#ffffff;--shadow:0 18px 45px rgba(18,48,71,.14)}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(135deg,#fff 0%,#eefbfc 55%,#e7f3f7 100%);color:var(--navy);min-height:100vh}.app-shell{width:min(1160px,100%);margin:0 auto;padding:clamp(14px,3vw,32px)}.topbar{display:flex;gap:22px;align-items:center;background:rgba(255,255,255,.88);border:1px solid rgba(7,140,164,.17);border-radius:28px;padding:18px;box-shadow:var(--shadow)}.logo{width:clamp(92px,18vw,180px);height:auto;object-fit:contain}.topbar h1{margin:0;font-size:clamp(1.35rem,3vw,2.4rem);letter-spacing:.02em}.topbar p,.lead{color:var(--grey);font-size:1.05rem;line-height:1.55}.quick-actions,.menu-buttons,.game-controls,.admin-toolbar{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}button,.file-label{border:0;border-radius:999px;padding:12px 18px;font-weight:800;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}button:hover,.file-label:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(18,48,71,.16)}button:disabled{opacity:.5;cursor:not-allowed;transform:none}.primary{background:linear-gradient(135deg,var(--teal),var(--cyan));color:#fff}.secondary,.file-label{background:#fff;color:var(--navy);border:1px solid rgba(18,48,71,.12)}.danger{background:var(--danger);color:#fff}.panel{display:none;background:rgba(255,255,255,.92);border:1px solid rgba(7,140,164,.16);border-radius:28px;padding:clamp(18px,3vw,30px);box-shadow:var(--shadow);margin-top:18px}.panel.active{display:block}.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.stat-card,.question-card,.result-card,.admin-item{background:var(--card);border:1px solid rgba(18,48,71,.1);border-radius:24px;padding:22px;box-shadow:0 10px 25px rgba(18,48,71,.08)}.rating-big{font-size:clamp(1.8rem,5vw,3rem);font-weight:900;color:var(--teal)}label{display:grid;gap:8px;margin:14px 0;font-weight:800}input,select,textarea{width:100%;border:1px solid rgba(18,48,71,.18);border-radius:16px;padding:13px 14px;font:inherit;background:#fff;color:var(--navy)}textarea{min-height:80px;resize:vertical}.game-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.pill{display:inline-flex;margin:3px;padding:8px 12px;border-radius:999px;background:var(--pale);font-weight:900;color:var(--teal)}.timer-wrap{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--teal));color:#fff;display:grid;place-items:center;font-size:1.4rem;font-weight:900}progress{width:100%;height:14px;border:0;margin:16px 0}progress::-webkit-progress-bar{background:#e4eef1;border-radius:999px}progress::-webkit-progress-value{background:linear-gradient(90deg,var(--teal),var(--cyan));border-radius:999px}.answers{display:grid;gap:12px;margin-top:18px}.answer-btn{border-radius:18px;text-align:left;justify-content:flex-start;background:#f8fbfc;border:1px solid rgba(18,48,71,.13);color:var(--navy);font-weight:750}.answer-btn.correct{background:rgba(15,125,79,.12);border-color:var(--good)}.answer-btn.wrong{background:rgba(181,37,37,.12);border-color:var(--danger)}.feedback{min-height:38px;margin-top:16px;font-weight:900}.feedback.good{color:var(--good)}.feedback.bad{color:var(--danger)}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}.result-card b{display:block;font-size:2rem;color:var(--teal)}.history{display:grid;gap:10px}.history-item{padding:14px;border-radius:16px;background:#f8fbfc;border-left:5px solid var(--teal)}.admin-toolbar{align-items:center}.admin-toolbar input[type=search]{flex:1 1 280px}.file-label input{display:none}.admin-list{display:grid;gap:16px;margin-top:16px}.admin-item h3{margin-top:0}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.correct-row{display:grid;grid-template-columns:1fr 80px;gap:10px;align-items:center;margin:8px 0}.source-text{font-size:.9rem;color:var(--grey)}code{background:var(--pale);padding:.15rem .35rem;border-radius:6px}@media (max-width:760px){.topbar{align-items:flex-start}.hero-grid,.admin-grid{grid-template-columns:1fr}.quick-actions button,.menu-buttons button,.game-controls button,.file-label{flex:1 1 100%}.timer-wrap{width:58px;height:58px}.panel{border-radius:20px}.topbar{border-radius:20px}.logo{width:100px}}