:root{color-scheme:dark;--bg:#0c1220;--panel:#172135;--text:#f4f6fb;--muted:#b2bed2;--yellow:#f6c95c;--blue:#81b9ff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{max-width:1160px;margin:auto;padding:44px 32px 20px}header{margin-bottom:32px}.eyebrow{font-size:.75rem;letter-spacing:.18em;color:var(--yellow);font-weight:750}h1{font-size:clamp(2.5rem,5vw,4rem);letter-spacing:-.05em;line-height:1.1;margin:12px 0}header p{color:var(--muted);margin:0}h2,h3,p{margin-top:0}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.stage{background:var(--panel);border:1px solid #33405a;border-radius:20px;padding:28px;display:flex;flex-direction:column;min-width:0}.stage-top{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:.875rem}.tag{letter-spacing:.09em;font-size:.75rem}.instruction{min-height:112px;margin-top:30px}.instruction h2{font-size:1.7rem;letter-spacing:-.025em;margin-bottom:6px}.instruction p{color:var(--muted);max-width:540px}.doors{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:8px 0 26px}button{font:inherit;cursor:pointer}button:focus-visible,summary:focus-visible{outline:3px solid white;outline-offset:5px}button:disabled{cursor:default}.door{min-height:240px;color:white;border:2px solid #587599;background:#263e5e;border-radius:70px 70px 10px 10px;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:22px 8px;position:relative;transition:transform .18s,border-color .18s,background .18s}.door:not(:disabled):hover{transform:translateY(-5px);border-color:var(--yellow)}.door-title{font-size:.75rem;letter-spacing:.15em;color:#c1d1e7}.door-number{font-size:4rem;line-height:1.3;font-weight:750}.door-label{font-size:.875rem;margin-top:22px}.door.selected{border-color:var(--yellow);background:#39434b}.door.open{background:#101a2b;border-color:#36445b}.door.winner{border-color:var(--yellow)}.door.open .door-number{display:none}.prize{font-size:3.8rem;line-height:1.4;min-height:0}.actions{display:flex;justify-content:center;gap:12px;margin:0 0 18px}.primary,.secondary{border:1px solid transparent;border-radius:8px;padding:12px 18px;font-weight:700}.primary{background:var(--yellow);color:#172135}.primary:hover{background:#ffda7c}.secondary{background:#253550;border-color:#62728d;color:white}.secondary:hover{background:#344765}.hint{font-size:.875rem;color:var(--muted);text-align:center;margin:auto 0 0;padding-top:8px}.scoreboard{padding:24px;border:1px solid #33405a;border-radius:20px;background:#111a2b}.score-heading{display:flex;justify-content:space-between;gap:8px;align-items:center}.score-heading h2{font-size:1.15rem;margin:0}.score-heading>span{font-size:.875rem;color:var(--muted)}.small{font-size:.875rem;color:var(--muted);margin:8px 0 16px}.stat{padding:18px 0;border-top:1px solid #33405a}.stat-top{display:flex;justify-content:space-between}.stat h3{font-size:1rem;margin:0}.stat strong{display:block;font-size:2.8rem;letter-spacing:-.05em;line-height:1.3;margin:4px 0}.switch-stat{color:var(--yellow)}.stay-stat{color:var(--blue)}.stat p{font-size:.875rem;margin:8px 0 0;color:var(--muted)}.track{height:5px;background:#2c374c;border-radius:5px;overflow:hidden}.track div{height:100%;width:0;background:currentColor;transition:width .3s}.text-button{color:var(--muted);background:none;border:0;padding:4px 0;text-decoration:underline;text-underline-offset:4px;font-size:.875rem}.text-button:hover{color:white}details{margin-top:24px;border-top:1px solid #33405a;border-bottom:1px solid #33405a;padding:20px 4px}summary{cursor:pointer;font-weight:650}summary span{float:right;font-weight:400;color:var(--muted);font-size:.875rem}.explanation{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding-top:24px}.explanation h3{font-size:1rem}.explanation p{color:var(--muted)}footer{font-size:.875rem;color:var(--muted);padding:24px 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}[hidden]{display:none!important}@media(max-width:850px){.layout{grid-template-columns:1fr}.scoreboard{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.score-heading,.scoreboard>.small,.scoreboard>.text-button,.scoreboard>#reset-confirm{grid-column:1/-1}.scoreboard>.text-button{text-align:left}.door{min-height:210px}}@media(max-width:480px){main{padding:28px 16px 12px}.stage{padding:20px 14px}.doors{gap:8px}.door{min-height:185px;padding:16px 4px}.door-label{font-size:.75rem}.door-number{font-size:3rem}.prize{font-size:2.8rem}.stage-top{font-size:.75rem}.tag{letter-spacing:.02em}.actions{flex-wrap:wrap}.actions button{width:100%}.explanation{grid-template-columns:1fr;gap:8px}summary span{display:block;float:none;margin-top:6px}.instruction{min-height:140px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
