:root{color-scheme:dark;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--color-bolt: #ffe45c;--color-magenta: #ff3399;--color-purple: #7433ff;--color-blue: #3478ff;--color-cyan: #33f5ff;--color-white: #fefbff;--bg-base: #040014;--panel-bg: rgba(10, 12, 31, .85);--card-bg: rgba(6, 10, 28, .9);--bg-gradient: radial-gradient(circle at 20% -10%, rgba(255, 228, 92, .25), transparent 45%), radial-gradient(circle at 85% 0%, rgba(51, 245, 255, .35), transparent 55%), radial-gradient(circle at -10% 65%, rgba(255, 51, 153, .25), transparent 50%);--text: var(--color-white);--muted: rgba(255, 255, 255, .7);--text-highlight: #fff5c6;--text-inverted: #040014;--accent: var(--color-bolt);--accent-strong: var(--color-magenta);--success: #4ef7a3;--danger: #ff4f7d;--glow-strong: rgba(255, 228, 92, .32);--glow-soft: rgba(51, 245, 255, .18);--shadow-soft: 0 14px 35px rgba(2, 6, 23, .45);--shadow-deep: 0 45px 80px rgba(0, 0, 0, .7);--glow-neon: 0 0 35px rgba(255, 228, 92, .7), inset 0 0 15px rgba(255, 228, 92, .35);--energy-gradient: linear-gradient(120deg, rgba(255, 51, 153, .95), rgba(255, 228, 92, .95), rgba(51, 245, 255, .95));--energy-fade: linear-gradient(180deg, rgba(255, 255, 255, .12), transparent);--state-hover: rgba(255, 255, 255, .08);--state-active: rgba(255, 255, 255, .18);--state-disabled: rgba(255, 255, 255, .38);--state-correct: #44fba8;--state-wrong: #ff4b7d;--border-glass: rgba(255, 255, 255, .18);--border-strong: rgba(255, 255, 255, .32);--option-a: #ffe45c;--option-b: #ff58eb;--option-c: #49f3ff;--option-d: #78ff84;--option-a-bg: linear-gradient(135deg, rgba(255, 228, 92, .25), rgba(255, 138, 33, .2));--option-b-bg: linear-gradient(135deg, rgba(255, 88, 235, .25), rgba(116, 51, 255, .3));--option-c-bg: linear-gradient(135deg, rgba(73, 243, 255, .28), rgba(52, 120, 255, .24));--option-d-bg: linear-gradient(135deg, rgba(120, 255, 132, .25), rgba(38, 189, 145, .2));--transition-base: .22s cubic-bezier(.34, 1.56, .64, 1);--blur-amount: 32px;--ring-size: 2px}*{box-sizing:border-box}body{margin:0;min-height:100dvh;min-width:100%;background-color:var(--bg-base);background-image:var(--bg-gradient);color:var(--text);display:flex;justify-content:center;align-items:flex-start;padding:clamp(.75rem,3dvw,1.75rem);padding-bottom:clamp(1rem,5dvw,3rem);overflow-x:hidden;overflow-y:auto;touch-action:manipulation;scroll-behavior:smooth;position:relative;isolation:isolate;line-height:1.5}body:before,body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-2;pointer-events:none}body:before{background-image:radial-gradient(1px 1px at 15% 25%,rgba(255,255,255,.3),transparent),radial-gradient(1px 1px at 75% 35%,rgba(255,255,255,.25),transparent),radial-gradient(1px 1px at 55% 65%,rgba(255,255,255,.2),transparent);opacity:.45;filter:drop-shadow(0 0 6px rgba(255,255,255,.15))}body:after{background-image:var(--energy-gradient);mix-blend-mode:screen;opacity:.07;transform:translateZ(0);animation:energyShift 16s linear infinite}#root{width:100%}.icons-sprite{position:absolute;width:0;height:0;pointer-events:none}.glow{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background:radial-gradient(circle,var(--glow-strong),transparent 45%) 15% 8% / 35% 35%,radial-gradient(circle,var(--glow-soft),transparent 45%) 80% 12% / 40% 40%;filter:blur(100px);opacity:.85;z-index:-1}svg,button,input,textarea,select{font:inherit}input,textarea,select{user-select:text;-webkit-user-select:text}.icon{width:1.1rem;height:1.1rem;flex-shrink:0;color:currentColor}.app{position:relative;z-index:1;width:min(520px,100%);max-width:100%;min-height:min(920px,100dvh - 1.5rem);aspect-ratio:9 / 16;margin:0 auto;display:flex;flex-direction:column;gap:1rem;padding:clamp(1rem,4dvw,1.6rem);background:linear-gradient(170deg,#050514d1,#070a1ec7);border-radius:42px;border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-deep);-webkit-backdrop-filter:blur(var(--blur-amount));backdrop-filter:blur(var(--blur-amount));overflow:hidden;-webkit-user-select:none;user-select:none}.app:before{content:"";position:absolute;top:14px;right:14px;bottom:14px;left:14px;border-radius:32px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(135deg,#ffffff05,#fff0);z-index:0;pointer-events:none}.app__header{position:relative;z-index:1;display:flex;justify-content:center}.screen{position:relative;z-index:1;display:flex;flex-direction:column;gap:1rem;padding:clamp(.75rem,3dvw,1.1rem);border-radius:32px;background:color-mix(in srgb,var(--panel-bg) 80%,rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px #0006}.vertical-frame{display:flex;flex-direction:column;gap:1.1rem;align-items:stretch;text-align:center}.topic-banner{position:relative;padding:.6rem 3.5rem .6rem 1.2rem;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(120deg,#ffffff0d,#ffffff03);color:var(--text-highlight);font-weight:700;letter-spacing:.04em;text-transform:uppercase;display:inline-flex;justify-content:center;align-items:center;margin:0 auto;gap:.65rem}.topic-banner:after{content:"";position:absolute;right:.75rem;width:28px;height:28px;border-radius:8px 14px 4px;background:var(--energy-gradient);box-shadow:var(--glow-neon);-webkit-mask-image:linear-gradient(120deg,#000 40%,transparent 75%);mask-image:linear-gradient(120deg,#000 40%,transparent 75%)}.topic-text{margin:0;font-size:1rem}.timer-rect{position:relative;width:min(100%,420px);margin:0 auto;padding:.85rem 1.25rem;border-radius:24px;border:1px solid rgba(255,255,255,.15);background:linear-gradient(120deg,#0e142dcc,#080c1ed9);box-shadow:var(--shadow-soft);overflow:hidden}.timer-rect:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,color-mix(in srgb,var(--timer-color, var(--accent)) 70%,#ffffff 20%) 0%,color-mix(in srgb,var(--timer-color, var(--accent)) 70%,#ffffff 20%) var(--timer-ratio, 100%),rgba(5,8,24,.2) var(--timer-ratio, 100%),rgba(5,8,24,.2) 100%);opacity:.4}.timer-rect:after{content:"";position:absolute;top:1px;right:1px;bottom:1px;left:1px;border-radius:inherit;border:1px solid rgba(255,255,255,.05);mix-blend-mode:screen}.timer-rect__label{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}.timer-rect__value{font-size:1.8rem;font-weight:700;color:var(--text-highlight);text-shadow:0 0 26px rgba(255,255,255,.5)}.chip,button{display:inline-flex;align-items:center;gap:.5rem}.chip{padding:.35rem 1.1rem;border-radius:999px;border:1px solid rgba(255,255,255,.15);background:#ffffff0a;color:var(--muted);font-size:.85rem}button{position:relative;border:none;border-radius:22px;padding:.95rem 1.6rem;font-weight:700;font-size:1rem;text-transform:uppercase;letter-spacing:.06em;background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:var(--text-inverted);box-shadow:inset 0 -4px 8px #00000040,0 18px 35px #0006;cursor:pointer;transition:transform var(--transition-base),box-shadow var(--transition-base),filter .16s ease;overflow:hidden}button:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;background:linear-gradient(120deg,rgba(255,255,255,.5),transparent 60%);opacity:.25;mix-blend-mode:screen;transform:translateY(-100%);transition:transform var(--transition-base)}button:hover:after{transform:translateY(0)}button:not(:disabled):hover{transform:translateY(-2px) scale(1.01);box-shadow:inset 0 -3px 6px #00000040,0 25px 45px #0000008c}button:active{transform:translateY(0) scale(.99);box-shadow:inset 0 3px 12px #00000073,0 6px 18px #00000059}button:disabled{opacity:.55;cursor:not-allowed;box-shadow:inset 0 0 #0000}button.chip-button{border-radius:999px;padding:.4rem 1.25rem;font-size:.9rem;text-transform:none;letter-spacing:.1em;background:#ffffff14;color:var(--text);box-shadow:none}button.chip-button:after{display:none}button.chip-button[aria-pressed=true]{border:1px solid var(--border-strong);background:linear-gradient(135deg,#fff3,#ffffff0d);box-shadow:var(--glow-neon)}.panel{display:grid;gap:1rem;padding:clamp(1rem,4dvw,1.4rem);border-radius:28px;background:var(--card-bg);border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-soft)}.panel--compact{padding:clamp(.85rem,3dvw,1.1rem)}.input-group{display:flex;flex-direction:column;gap:.35rem;font-weight:600;color:var(--muted)}.input-pair{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem}.input-label{display:inline-flex;align-items:center;gap:.4rem}input[type=text],input[type=number],input[type=password]{background:#0b1025d1;border:1px solid rgba(255,255,255,.12);border-radius:18px;color:var(--text);padding:.85rem 1rem;transition:border var(--transition-base),background .16s ease}input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 var(--ring-size) #ffe45c66}input[type=color]{width:100%;height:52px;border-radius:18px;border:1px solid rgba(255,255,255,.12);background:#ffffff0d;cursor:pointer}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:16px}.number-control{display:flex;align-items:center;border-radius:18px;border:1px solid rgba(255,255,255,.12);background:#0b1025e6;padding:.35rem .75rem}.number-control input{flex:1;background:transparent;border:none;color:var(--text);font-size:1rem;padding:.5rem .25rem}.number-control input:focus{outline:none}.number-control .unit{color:var(--muted);font-size:.9rem;padding-left:.5rem}.quiz-card{display:flex;flex-direction:column;gap:1rem;padding:clamp(1.1rem,3dvw,1.5rem);border-radius:32px;background:linear-gradient(140deg,rgba(255,255,255,.04),transparent),var(--card-bg);border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-soft)}.quiz-banner{position:relative;margin:0;border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.08);min-height:60px;max-height:60px;height:60px;background:radial-gradient(circle at 30% 20%,rgba(255,228,92,.25),transparent 55%),radial-gradient(circle at 80% 0%,rgba(255,51,153,.2),transparent 60%),#040712d9}.quiz-banner:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,#0609190d,#03040cbf);mix-blend-mode:screen;pointer-events:none}.quiz-banner__image{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(1.15) contrast(1.05);transform:scale(1.05)}.quiz-banner__credit{position:absolute;right:1rem;bottom:.5rem;padding:.2rem .7rem;border-radius:999px;background:#0407128c;color:var(--muted);font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;display:inline-flex;gap:.25rem;align-items:center}.quiz-banner__credit a{color:var(--text-highlight)}.status-row{display:flex;flex-direction:column;gap:.6rem}.pill{padding:.45rem 1rem;border-radius:999px;border:1px solid rgba(255,255,255,.15);font-size:.85rem;color:var(--muted);text-align:center;background:#ffffff08}.pill.glow{color:var(--text-highlight);border-color:#ffe45c73;box-shadow:0 0 35px #ffe45c59}.progress-track{position:relative;width:100%;height:8px;border-radius:999px;background:#ffffff26;overflow:hidden}.progress-bar{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--energy-gradient);border-radius:inherit;transition:width .32s ease}.question{margin:0;font-size:clamp(1.2rem,3.5dvw,1.8rem);line-height:1.35;text-align:left}.options-grid{display:flex;flex-direction:column;gap:.85rem}.option-btn,.skeleton-option{position:relative;display:flex;align-items:center;gap:.9rem;border-radius:22px;border:1px solid rgba(255,255,255,.12);padding:.95rem 1.1rem;background:linear-gradient(145deg,#070a1ef2,#040714e6);color:var(--text);text-align:left;font-size:1rem;line-height:1.4;cursor:pointer;transition:transform var(--transition-base),border var(--transition-base),box-shadow var(--transition-base)}.option-btn:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;border:1px solid rgba(255,255,255,.04);mix-blend-mode:screen;opacity:0;transition:opacity var(--transition-base)}.option-btn:hover:after{opacity:1}.option-btn:hover{transform:translateY(-2px) scale(1.005);box-shadow:0 20px 35px #00000073}.option-btn:active{transform:translateY(0) scale(.995)}.option-prefix{flex-shrink:0;width:2.3rem;height:2.3rem;border-radius:1rem;display:grid;place-items:center;font-weight:800;font-size:1rem;color:var(--text-inverted);text-shadow:0 2px 6px rgba(0,0,0,.3)}.options-grid .option-btn:nth-child(1){border-color:color-mix(in srgb,var(--option-a) 70%,transparent);background-image:var(--option-a-bg)}.options-grid .option-btn:nth-child(1) .option-prefix{background:var(--option-a)}.options-grid .option-btn:nth-child(2){border-color:color-mix(in srgb,var(--option-b) 65%,transparent);background-image:var(--option-b-bg)}.options-grid .option-btn:nth-child(2) .option-prefix{background:var(--option-b)}.options-grid .option-btn:nth-child(3){border-color:color-mix(in srgb,var(--option-c) 65%,transparent);background-image:var(--option-c-bg)}.options-grid .option-btn:nth-child(3) .option-prefix{background:var(--option-c)}.options-grid .option-btn:nth-child(4){border-color:color-mix(in srgb,var(--option-d) 60%,transparent);background-image:var(--option-d-bg)}.options-grid .option-btn:nth-child(4) .option-prefix{background:var(--option-d)}.skeleton-option{overflow:hidden;border-style:dashed;cursor:progress}.skeleton-option:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(120deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 1.6s infinite}.status-message{margin:0;color:var(--muted);text-align:center}.final-card{margin:auto;display:flex;flex-direction:column;gap:.8rem;padding:clamp(1.5rem,4dvw,2rem);border-radius:36px;background:linear-gradient(120deg,#ffe45c26,#f393),var(--card-bg);border:1px solid rgba(255,255,255,.12);text-align:center;color:var(--text);cursor:pointer;transition:transform var(--transition-base),border .2s ease}.final-card:hover{transform:translateY(-4px);border-color:#fff6}.final-card:focus-visible{outline:none;box-shadow:0 0 0 var(--ring-size) #ffe45c80}.final-tag{margin:0;text-transform:uppercase;letter-spacing:.3em;font-size:.75rem;color:var(--muted)}.final-title{margin:0;font-size:clamp(1.4rem,5dvw,2rem)}.final-subtitle{margin:0;color:var(--muted)}.options-grid.disabled .option-btn{pointer-events:none;opacity:.85;cursor:default}.options-grid .option-btn.correct{border-color:color-mix(in srgb,var(--state-correct) 70%,transparent);background-image:linear-gradient(135deg,#173623f2,#1c784ad9);color:var(--state-correct);box-shadow:0 0 25px #51ffa940}.options-grid .option-btn.wrong{border-color:color-mix(in srgb,var(--state-wrong) 70%,transparent);background-image:linear-gradient(135deg,#470818f2,#27040dd9);color:var(--state-wrong)}button:focus-visible,.option-btn:focus-visible,.final-card:focus-visible,input:focus-visible{outline:none;box-shadow:0 0 0 var(--ring-size) #ffe45c80,0 0 20px #ffe45c4d}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}@keyframes energyShift{0%{transform:translate3d(-10%,0,0) rotate(0)}to{transform:translate3d(10%,0,0) rotate(360deg)}}.status-message:before{content:"⚡";margin-right:.35rem;color:var(--accent)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:0s!important;transition-duration:0s!important}}@media (max-width: 640px){body{padding:clamp(.35rem,4dvw,1rem);align-items:stretch}.app{width:100%;min-height:100dvh;aspect-ratio:auto;border-radius:0;padding:clamp(.85rem,5dvw,1.2rem)}.screen{padding:clamp(.6rem,4dvw,1rem)}button{width:100%}}