:root{color-scheme:light dark;--bg: #0f3d23;--panel: rgba(255, 255, 255, .08);--text: #f3f3f3;--muted: #b7c9bd;--accent: #e0a500}*{box-sizing:border-box}body{margin:0;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:radial-gradient(circle at top,#176339,#0a2416 70%);color:var(--text);min-height:100vh}.app-root{min-height:100vh;display:flex;align-items:center;justify-content:center;overflow-y:auto}.screen{display:flex;flex-direction:column;gap:12px;background:var(--panel);padding:32px;border-radius:16px;min-width:320px;max-width:480px;box-shadow:0 8px 24px #0000004d}.screen h1{margin:0 0 8px;font-size:22px}.screen input{padding:10px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.3);background:#0003;color:var(--text);font-size:15px}.screen button[type=submit],.screen .secondary{padding:10px 16px;border-radius:8px;border:none;background:var(--accent);color:#1c1c1c;font-weight:600;cursor:pointer}.hint{color:var(--muted);font-size:14px}.table-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.table-card{padding:14px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:#0003;color:var(--text);cursor:pointer;text-align:left}.table-card:disabled{opacity:.4;cursor:not-allowed}.table-card-name{font-weight:600;margin-bottom:4px}.table-card-meta{font-size:12px;color:var(--muted)}.seat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.seat-card{padding:20px;border-radius:10px;border:1px dashed rgba(255,255,255,.4);background:#00000026;color:var(--text);cursor:pointer;font-size:15px}.seat-card.seat-occupied{border-style:solid;cursor:not-allowed;opacity:.8}.seat-card.seat-self{border-color:var(--accent);color:var(--accent);font-weight:700}.game-board{position:relative;width:100%;max-width:980px;min-height:90vh;margin:0 auto;display:grid;grid-template-columns:1fr 2fr 1fr;grid-template-rows:auto 1fr auto;grid-template-areas:"across across across" "left center right" "self self self";gap:10px;padding:12px}.opponent{background:var(--panel);border-radius:10px;padding:8px;display:flex;flex-direction:column;gap:4px;min-height:0}.opponent-across{grid-area:across;justify-self:center;width:fit-content;max-width:100%}.opponent-left{grid-area:left}.opponent-right{grid-area:right}.opponent-header{position:relative;display:flex;align-items:center;gap:6px;font-size:13px;flex-wrap:wrap}.opponent-name{font-weight:600}.badge-dealer{background:#c0392b;color:#fff;border-radius:4px;padding:0 5px;font-size:11px}.badge-wind{background:#fff3;border-radius:4px;padding:0 5px;font-size:11px}.badge-offline{background:#555;border-radius:4px;padding:0 5px;font-size:11px}.opponent-score{margin-left:auto;font-weight:700;color:var(--accent)}.opponent-hand,.melds-row,.flowers-row,.discards-row,.self-hand,.action-bar{display:flex;flex-wrap:wrap;gap:3px}.discards-row{min-height:36px;opacity:.85}.self-hand-row{display:flex;align-items:flex-end;gap:8px}.self-hand-row .self-hand{flex:1}.sort-hand-btn{flex-shrink:0;padding:8px 10px;border-radius:8px;border:1px solid rgba(255,255,255,.3);background:#ffffff1a;color:var(--text);font-size:12px;cursor:pointer}.tile-slot{touch-action:none;-webkit-user-select:none;user-select:none;display:inline-flex}.tile-slot .tile{transition:transform .12s ease,box-shadow .12s ease}.tile-slot-active{cursor:pointer}.tile-slot-active:hover .tile{transform:translateY(-8px) scale(1.04);box-shadow:0 6px 10px #00000073}.tile-slot.tile-selected .tile{outline:3px solid var(--accent);transform:translateY(-10px);box-shadow:0 8px 14px #e0a50073}.confirm-discard-btn{flex-shrink:0;padding:8px 14px;border-radius:8px;border:none;background:var(--accent);color:#1c1c1c;font-weight:700;font-size:13px;cursor:pointer;animation:confirm-pulse 1.4s ease-in-out infinite}@keyframes confirm-pulse{0%,to{box-shadow:0 0 #e0a50080}50%{box-shadow:0 0 0 6px #e0a50000}}@keyframes tile-pop-in{0%{transform:scale(.4) translateY(-14px);opacity:.4}60%{transform:scale(1.12) translateY(2px);opacity:1}to{transform:scale(1) translateY(0)}}.tile-pop{animation:tile-pop-in .28s ease-out}.claim-bar{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;padding:10px 14px;background:#0a140eeb;border:1px solid rgba(255,255,255,.25);border-radius:14px;box-shadow:0 6px 18px #0006}.turn-countdown-row{display:flex;justify-content:center}.turn-countdown{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#2f6fd6;color:#fff;font-weight:800;font-size:14px;box-shadow:0 4px 12px #00000080;border:2px solid rgba(255,255,255,.5)}.turn-countdown-urgent{background:#c0392b}.claim-countdown{display:flex;align-items:center;justify-content:center;padding:0 12px;min-width:40px;min-height:40px;border-radius:10px;background:#2f6fd6;color:#fff;font-weight:800;font-size:15px}.claim-countdown-urgent{background:#c0392b}.claim-btn{display:flex;align-items:center;gap:6px;padding:14px 22px;border-radius:10px;border:none;background:#ffffff2e;color:var(--text);font-weight:700;font-size:18px;cursor:pointer}.claim-hu{background:#c0392b;color:#fff}.claim-pass{background:transparent;border:1px solid rgba(255,255,255,.4)}.tile-dragging{opacity:.65;transform:scale(1.08) translateY(-6px);z-index:5}.meld{display:flex;align-items:center;gap:2px;background:#0003;border-radius:6px;padding:2px 4px}.meld-label{font-size:11px;color:var(--muted);margin-right:2px}.center-info{grid-area:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-size:14px;color:var(--muted)}.wildcard-info{display:flex;align-items:center;gap:6px}.kong-rob-hint{display:flex;align-items:center;gap:4px;color:var(--accent);font-weight:600}.self-area{grid-area:self;background:var(--panel);border-radius:10px;padding:10px;display:flex;flex-direction:column;gap:6px}.tile{position:relative;width:36px;height:50px;border-radius:5px;background:#fdfaf2;border:1px solid #c9c2ab;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;padding:0;box-shadow:0 2px 3px #00000059;flex-shrink:0;overflow:hidden}.tile-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;border-radius:inherit}.tile-label{position:relative;z-index:0}.tile-small{width:24px;height:34px;font-size:11px}.tile-back{background:linear-gradient(135deg,#2a6b3b,#184221);border-color:#0d2a13}.tile-clickable{cursor:pointer;transition:transform .1s ease}.tile-clickable:hover{transform:translateY(-6px)}.tile-highlight{outline:2px solid var(--accent);transform:translateY(-4px)}.tile-wildcard{outline:2px solid #e0a500;box-shadow:0 0 6px #e0a500b3}.tile-wildcard-badge{position:absolute;top:-1px;left:-1px;z-index:2;background:#e0a500;color:#1c1c1c;font-size:9px;font-weight:800;line-height:1;padding:2px 3px;border-radius:4px 0}.tile-wan{color:#b3261e}.tile-tiao{color:#1b6e2e}.tile-tong{color:#1a56b0}.tile-wind{color:#2b2b2b}.tile-red{color:#b3261e}.tile-green{color:#1b6e2e}.tile-white{color:#555}.tile-flower{color:#8a2be2}.action-bar{align-items:center;min-height:44px}.action-btn{display:flex;align-items:center;gap:4px;padding:8px 14px;border-radius:8px;border:none;background:#ffffff26;color:var(--text);font-weight:600;cursor:pointer}.action-hu{background:#c0392b;color:#fff}.action-pass{background:transparent;border:1px solid rgba(255,255,255,.3)}.mute-toggle{position:absolute;top:10px;right:10px;z-index:40;width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:#00000059;color:var(--text);font-size:16px;line-height:1;cursor:pointer}.result-banner{position:fixed;top:40%;left:50%;transform:translate(-50%,-50%);background:#000000d9;padding:24px 40px;border-radius:14px;text-align:center;font-size:24px;font-weight:700;color:var(--accent);z-index:50;box-shadow:0 10px 30px #00000080}.result-sub{margin-top:8px;font-size:14px;color:var(--muted);font-weight:400}.error-toast{position:fixed;top:16px;left:50%;transform:translate(-50%);background:#c0392b;color:#fff;padding:10px 16px;border-radius:8px;z-index:100}.connecting-banner{position:fixed;top:16px;left:50%;transform:translate(-50%);background:#555;color:#fff;padding:6px 14px;border-radius:8px;font-size:13px;z-index:100}@media (max-width: 720px){.game-board{grid-template-columns:60px 1fr 60px}.tile{width:28px;height:40px;font-size:11px}}@media (orientation: landscape) and (max-height: 700px){.app-root{align-items:flex-start;padding:10px 0}.screen{padding:16px 20px;gap:8px;max-width:640px}.screen h1{font-size:18px;margin-bottom:2px}.table-grid{grid-template-columns:repeat(4,1fr);gap:6px}.table-card{padding:8px}.seat-grid{grid-template-columns:repeat(4,1fr);gap:6px}.seat-card{padding:10px;font-size:13px}}@media (orientation: landscape) and (max-height: 700px){.game-board{grid-template-columns:1fr 160px 1fr;grid-template-rows:auto auto auto;align-items:start;gap:4px;padding:4px;min-height:100vh;min-height:100dvh;max-height:100dvh;overflow-y:auto}.tile{width:24px;height:34px;font-size:10px}.tile-small{width:17px;height:24px;font-size:8px}.tile-wildcard-badge{font-size:7px;padding:1px 2px}.turn-countdown{width:30px;height:30px;font-size:12px}.opponent{padding:4px;gap:2px}.opponent-header{font-size:10px;gap:3px}.discards-row{min-height:0;max-height:60px;overflow-y:auto}.center-info{font-size:11px;gap:2px}.self-area{padding:6px;gap:4px;max-height:60vh;overflow-y:auto}.action-bar{min-height:32px}.action-btn{padding:5px 9px;font-size:12px}.sort-hand-btn{padding:5px 8px;font-size:11px}.confirm-discard-btn{padding:6px 10px;font-size:12px}.claim-bar{padding:6px 8px;gap:6px}.claim-btn{padding:8px 12px;font-size:14px}.claim-countdown{min-width:32px;min-height:32px;font-size:13px;padding:0 8px}.result-banner{font-size:16px;padding:14px 20px}}