*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f5f5f0;--bg-raised: #ffffff;--bg-inset: #edeee9;--text: #1a1a1a;--text-secondary: #6b6e74;--border: #e0e0db;--border-hover: #c8c8c2;--accent: #4f5de4;--accent-hover: #3d4bd2;--accent-soft: rgba(79, 93, 228, .08);--accent-text: #ffffff;--player-x: #e85d4a;--player-x-soft: rgba(232, 93, 74, .1);--player-o: #3aa0e8;--player-o-soft: rgba(58, 160, 232, .1);--blocked: #9b9b9b;--blocked-soft: rgba(155, 155, 155, .1);--success: #2fa866;--success-soft: rgba(47, 168, 102, .1);--danger: #d44040;--danger-soft: rgba(212, 64, 64, .08);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow-md: 0 4px 16px rgba(0, 0, 0, .06);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 999px;--transition: .2s ease}.theme-dark{--bg: #101016;--bg-raised: #1a1a24;--bg-inset: #141420;--text: #e8e8ec;--text-secondary: #8b8d99;--border: #2a2a3a;--border-hover: #3e3e54;--accent: #6c7aff;--accent-hover: #5a68ef;--accent-soft: rgba(108, 122, 255, .1);--accent-text: #ffffff;--player-x: #f07563;--player-x-soft: rgba(240, 117, 99, .12);--player-o: #5bb8f0;--player-o-soft: rgba(91, 184, 240, .12);--blocked: #6b6b6b;--blocked-soft: rgba(107, 107, 107, .12);--success: #4ecc7e;--success-soft: rgba(78, 204, 126, .1);--danger: #f06060;--danger-soft: rgba(240, 96, 96, .1);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .2);--shadow-md: 0 4px 16px rgba(0, 0, 0, .3);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .4)}html,body,#root{min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{background:var(--bg);color:var(--text);min-height:100vh;transition:background var(--transition),color var(--transition)}.container{max-width:800px;width:100%;margin:0 auto;padding:24px 32px 48px;display:flex;flex-direction:column;gap:20px}.topbar{display:flex;justify-content:space-between;align-items:center;padding:0;background:none;border:none;box-shadow:none}.topbar-brand{display:flex;align-items:center;gap:10px}.topbar-logo{width:28px;height:28px;color:var(--accent);flex-shrink:0}.topbar-title{font-size:1.05rem;font-weight:600;letter-spacing:-.01em;color:var(--text)}.topbar-room{font-size:.8rem;color:var(--text-secondary);font-weight:500;margin-left:8px;padding:2px 8px;background:var(--bg-inset);border-radius:var(--radius-pill)}.topbar-actions{display:flex;align-items:center;gap:4px}.icon-btn{-moz-appearance:none;appearance:none;-webkit-appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;padding:0 10px;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.85rem;font-weight:500;cursor:pointer;transition:background var(--transition),color var(--transition);white-space:nowrap}.icon-btn:hover{background:var(--accent-soft);color:var(--text)}.icon-btn:disabled{opacity:.4;cursor:not-allowed}.icon-btn--square{width:36px;padding:0}.icon-btn svg{width:18px;height:18px;flex-shrink:0}.icon-btn .name-label{max-width:120px;overflow:hidden;text-overflow:ellipsis}.name-input{height:36px;width:140px;padding:0 10px;border:1.5px solid var(--accent);border-radius:var(--radius-sm);background:var(--bg-raised);color:var(--text);font-size:.85rem;font-family:inherit;outline:none;transition:box-shadow var(--transition)}.name-input:focus{box-shadow:0 0 0 3px var(--accent-soft)}.theme-icon{display:block;width:18px;height:18px;transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.theme-icon.is-dark{transform:rotate(20deg)}.theme-icon.is-light{transform:rotate(0)}.card{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);transition:background var(--transition),border-color var(--transition)}.lobby-wrapper{display:flex;justify-content:center;padding-top:40px}.lobby-card{width:420px;text-align:center;display:flex;flex-direction:column;gap:16px}.lobby-card h1{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;margin-bottom:0}.lobby-card .lobby-subtitle{font-size:.9rem;color:var(--text-secondary);margin-top:-8px}.lobby-actions{display:flex;flex-direction:column;gap:12px}.lobby-divider{display:flex;align-items:center;gap:12px;color:var(--text-secondary);font-size:.8rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em;margin:4px 0}.lobby-divider:before,.lobby-divider:after{content:"";flex:1;height:1px;background:var(--border)}.join-row{display:flex;gap:8px}.join-row .input{flex:1;text-align:center;letter-spacing:.15em;font-weight:600}.conn-dot{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:.78rem;color:var(--text-secondary)}.conn-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--danger);flex-shrink:0}.conn-dot--on:before{background:var(--success)}.input{width:100%;height:44px;padding:0 14px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-inset);color:var(--text);font-size:.9rem;font-family:inherit;outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.input::placeholder{color:var(--text-secondary);opacity:.6}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border:1.5px solid transparent;border-radius:var(--radius-md);font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--transition);white-space:nowrap}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--primary{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.btn--primary:not(:disabled):hover{background:var(--accent-hover);border-color:var(--accent-hover);box-shadow:var(--shadow-md)}.btn--secondary{background:transparent;color:var(--text);border-color:var(--border)}.btn--secondary:not(:disabled):hover{border-color:var(--border-hover);background:var(--bg-inset)}.btn--ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn--ghost:not(:disabled):hover{background:var(--bg-inset);color:var(--text)}.btn--sm{height:34px;padding:0 12px;font-size:.82rem;border-radius:var(--radius-sm)}.btn--danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn--danger:not(:disabled):hover{opacity:.9}.btn-row{display:flex;flex-wrap:wrap;gap:8px}.btn--full{width:100%}.pill{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-pill);font-size:.75rem;font-weight:600;letter-spacing:.02em;background:var(--bg-inset);color:var(--text-secondary)}.pill--success{background:var(--success-soft);color:var(--success)}.pill--danger{background:var(--danger-soft);color:var(--danger)}.pill--accent{background:var(--accent-soft);color:var(--accent)}.toast{padding:12px 16px;border-radius:var(--radius-md);font-size:.85rem;font-weight:500;line-height:1.5;text-align:center}.toast--error{background:var(--danger-soft);color:var(--danger);border:1px solid transparent}.toast--info{background:var(--accent-soft);color:var(--accent);border:1px solid transparent}.toast--success{background:var(--success-soft);color:var(--success);border:1px solid transparent}.waiting-layout{display:flex;justify-content:center}.waiting-card{width:480px;display:flex;flex-direction:column;gap:4px}.waiting-card h2{font-size:1.15rem;font-weight:700;margin:0}.room-code-display{display:flex;align-items:center;justify-content:center;gap:10px;margin:12px 0;padding:16px;background:var(--bg-inset);border-radius:var(--radius-md)}.room-code-value{font-size:1.6rem;font-weight:700;letter-spacing:.2em;color:var(--accent);font-variant-numeric:tabular-nums}.room-code-label{font-size:.78rem;color:var(--text-secondary);font-weight:500;margin-bottom:2px}.settings-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.settings-label{font-size:.85rem;font-weight:500;color:var(--text-secondary)}.q-toggle{display:inline-flex;gap:4px;background:var(--bg-inset);border-radius:var(--radius-sm);padding:3px}.q-toggle-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;color:var(--text-secondary);font-size:.82rem;font-weight:600;font-family:inherit;padding:4px 14px;border-radius:6px;cursor:pointer;transition:all var(--transition)}.q-toggle-btn.is-active{background:var(--accent);color:var(--accent-text);box-shadow:var(--shadow-sm)}.q-toggle-btn:disabled{opacity:.4;cursor:not-allowed}.player-list{list-style:none;display:flex;flex-direction:column;gap:8px;margin:8px 0}.player-row{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg-inset);border-radius:var(--radius-md)}.player-info{display:flex;align-items:center;gap:10px}.player-avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:700;color:#fff;flex-shrink:0}.player-avatar svg{width:16px;height:16px}.player-avatar--x{background:var(--player-x)}.player-avatar--o{background:var(--player-o)}.player-avatar--waiting{background:var(--text-secondary)}.player-name{font-weight:600;font-size:.9rem}.player-you{font-size:.75rem;color:var(--text-secondary);font-weight:400}.waiting-footer{text-align:center;margin-top:4px}.waiting-hint{font-size:.82rem;color:var(--text-secondary);margin-top:10px}.game-layout{display:grid;grid-template-columns:1fr 260px;gap:24px;align-items:start}.game-main,.game-sidebar{display:flex;flex-direction:column;gap:16px}.game-header{display:flex;align-items:center;justify-content:space-between}.game-header h2{font-size:1.1rem;font-weight:700;margin:0}.board-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.cell{position:relative;aspect-ratio:1;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-raised);color:var(--text);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:12px 10px;font-family:inherit;transition:all var(--transition);overflow:hidden}.cell:not(:disabled):hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);transform:translateY(-1px)}.cell:disabled{cursor:default}.cell-category{font-size:.78rem;font-weight:600;color:var(--text-secondary);text-align:center;line-height:1.3}.cell-symbol{font-size:1.8rem;font-weight:800;line-height:1}.cell-symbol--x{color:var(--player-x)}.cell-symbol--o{color:var(--player-o)}.cell-symbol--blocked{color:var(--blocked)}.cell--claimed-x{background:var(--player-x-soft);border-color:var(--player-x)}.cell--claimed-o{background:var(--player-o-soft);border-color:var(--player-o)}.cell--blocked{background:var(--blocked-soft);border-color:var(--blocked)}.cell--my-progress{border-color:var(--accent);border-style:dashed}.cell-sub{font-size:.7rem;color:var(--text-secondary)}.scoreboard h3{font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin-bottom:12px}.score-player{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--bg-inset);border-radius:var(--radius-md)}.score-player+.score-player{margin-top:8px}.score-left{display:flex;align-items:center;gap:8px}.score-symbol{width:24px;height:24px;border-radius:6px;display:grid;place-items:center;font-size:.75rem;font-weight:800;color:#fff}.score-symbol--x{background:var(--player-x)}.score-symbol--o{background:var(--player-o)}.score-name{font-size:.85rem;font-weight:600}.score-pts{font-size:1.15rem;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}.legend{display:flex;flex-direction:column;gap:8px}.legend h3{font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin-bottom:2px}.legend-item{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--text-secondary)}.legend-swatch{width:14px;height:14px;border-radius:4px;flex-shrink:0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px;z-index:100;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-card{width:min(560px,100%);max-height:88vh;overflow-y:auto;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-lg);animation:slideUp .25s ease;display:flex;flex-direction:column;gap:0}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-header h3{font-size:1rem;font-weight:700;margin:0}.modal-progress{font-size:.78rem;font-weight:600;color:var(--text-secondary);background:var(--bg-inset);padding:4px 10px;border-radius:var(--radius-pill)}.quiz-prompt{font-size:.95rem;line-height:1.6;margin-bottom:20px;font-weight:500}.quiz-options{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.option-btn{display:flex;align-items:center;gap:10px;width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius-md);background:var(--bg-raised);color:var(--text);font-size:.88rem;font-family:inherit;cursor:pointer;text-align:left;transition:all var(--transition)}.option-btn:hover{border-color:var(--accent);background:var(--accent-soft)}.option-btn.is-selected{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}.option-letter{width:24px;height:24px;border-radius:6px;display:grid;place-items:center;font-size:.72rem;font-weight:700;background:var(--bg-inset);color:var(--text-secondary);flex-shrink:0;transition:all var(--transition)}.option-btn.is-selected .option-letter{background:var(--accent);color:#fff}.quiz-text-input{margin-bottom:24px}.modal-footer{display:flex;justify-content:space-between;align-items:center;gap:8px;padding-top:18px;border-top:1px solid var(--border);margin-top:4px}.modal-footer-left{display:flex;gap:8px}.game-end-layout{display:flex;justify-content:center;padding-top:24px}.game-end-card{width:440px;text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center}.game-end-card h2{font-size:1.4rem;font-weight:700}.game-end-subtitle{font-size:.9rem;color:var(--text-secondary)}.game-end-winner{font-size:1.1rem;font-weight:700;color:var(--accent);margin-top:4px}.game-end-scores{display:flex;flex-direction:column;gap:8px;width:100%;margin-top:8px}.joining-wrapper{display:flex;justify-content:center;padding-top:60px}.joining-card{width:360px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.joining-card h2{font-size:1.1rem;font-weight:600}.joining-card p{font-size:.85rem;color:var(--text-secondary)}.spinner{width:24px;height:24px;border:2.5px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 12px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:900px){.game-layout{grid-template-columns:1fr;gap:20px}.game-sidebar{flex-direction:row;flex-wrap:wrap;gap:12px}.game-sidebar>*{flex:1;min-width:200px}}@media(max-width:640px){.container{padding:16px 16px 32px;gap:16px}.topbar{gap:8px}.topbar-brand{gap:6px}.topbar-title{font-size:.95rem}.lobby-card,.waiting-card{width:100%}.lobby-wrapper,.waiting-layout{padding-top:16px}.room-code-value{font-size:1.3rem}.board-grid{gap:6px}.cell{aspect-ratio:auto;min-height:80px;padding:8px 6px}.cell-symbol{font-size:1.4rem}.cell-category{font-size:.7rem}.modal-card{padding:20px}.join-row{flex-direction:column}.game-end-card,.joining-card{width:100%}.topbar-room{display:none}.icon-btn .name-label{max-width:80px}}