:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--bg-soft:#f7f6f2;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#6f8f6a;--accent-strong:#4d6b49;--accent-bg:#6f8f6a1f;--accent-border:#6f8f6a73;--danger:#c1443a;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;font:17px/145% var(--sans);letter-spacing:.1px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#a9aab3;--text-h:#f3f4f6;--bg:#14151a;--bg-soft:#1b1c22;--border:#2e303a;--code-bg:#1f2028;--accent:#7fae78;--accent-strong:#9fd095;--accent-bg:#7fae7826;--accent-border:#7fae7866;--danger:#e07268}}*{box-sizing:border-box}body{margin:0}#root{flex-direction:column;min-height:100svh;display:flex}h1,h2,h3{font-family:var(--heading);color:var(--text-h);margin:0;font-weight:600}p{margin:0}button{font:inherit}.home{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:32px 16px;display:flex;position:relative}.account-bar{gap:8px;display:flex;position:absolute;top:16px;right:16px}.home h1{letter-spacing:-1px;font-size:48px}.home-subtitle{color:var(--text);margin-bottom:24px}.home-modes{grid-template-columns:repeat(3,minmax(180px,240px));gap:16px;display:grid}@media (width<=720px){.home-modes{grid-template-columns:1fr;width:100%;max-width:320px}}.mode-card{border:1px solid var(--border);background:var(--bg-soft);cursor:pointer;color:var(--text-h);border-radius:14px;flex-direction:column;align-items:center;gap:8px;padding:24px 16px;transition:border-color .15s,transform .15s;display:flex}.mode-card:hover{border-color:var(--accent-border);transform:translateY(-2px)}.mode-icon{font-size:34px}.mode-title{font-size:17px;font-weight:600}.mode-desc{color:var(--text);font-size:13px}.game-page{flex-direction:column;flex:1;width:100%;max-width:1100px;margin:0 auto;padding:16px 20px 40px;display:flex}.game-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.game-header h2{font-size:19px}.game-header-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.checkbox-label{color:var(--text);align-items:center;gap:6px;font-size:13px;display:flex}.game-layout{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:24px;display:flex}.board-column{flex-direction:column;align-items:center;gap:10px;display:flex}.side-column{flex-shrink:0;width:280px}@media (width<=900px){.side-column{width:100%;max-width:560px}}.turn-indicator{color:var(--text);min-height:20px;font-size:14px}.btn{border:1px solid var(--border);background:var(--bg-soft);color:var(--text-h);cursor:pointer;border-radius:8px;padding:8px 14px;font-size:14px;transition:border-color .15s,background .15s}.btn:hover{border-color:var(--accent-border)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:0 0;border-color:#0000}.btn-secondary{background:var(--bg-soft)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn-primary:hover{background:var(--accent-strong)}.btn-large{width:100%;padding:12px 20px;font-size:15px}.move-history{border:1px solid var(--border);background:var(--bg-soft);border-radius:12px;padding:14px}.move-history h3{color:var(--text);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;font-size:14px}.move-history-list{flex-direction:column;gap:2px;max-height:420px;display:flex;overflow-y:auto}.move-history-empty{color:var(--text);font-size:13px}.move-row{border-radius:6px;grid-template-columns:28px 1fr 1fr;gap:6px;padding:3px 4px;font-size:14px;display:grid}.move-row:nth-child(odd){background:var(--code-bg)}.move-number{color:var(--text)}.move-white,.move-black{color:var(--text-h);font-family:ui-monospace,Consolas,monospace}.captured-row{align-items:center;gap:8px;width:100%;max-width:560px;min-height:28px;font-size:22px;display:flex}.captured-pieces{gap:2px;display:flex}.captured-advantage{color:var(--text);font-family:ui-monospace,Consolas,monospace;font-size:13px}.setup-form{flex-direction:column;gap:20px;width:100%;max-width:420px;margin:24px auto;display:flex}.setup-group{flex-direction:column;gap:8px;display:flex}.setup-label{color:var(--text);text-transform:uppercase;letter-spacing:.5px;font-size:13px}.setup-choices{flex-wrap:wrap;gap:8px;display:flex}.choice-btn{border:1px solid var(--border);background:var(--bg-soft);min-width:90px;color:var(--text-h);cursor:pointer;border-radius:8px;flex:1;padding:10px}.choice-btn.active{border-color:var(--accent);background:var(--accent-bg);color:var(--accent-strong);font-weight:600}.text-input{border:1px solid var(--border);background:var(--bg);color:var(--text-h);border-radius:8px;padding:10px 12px;font-size:15px}.lobby-split{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (width<=520px){.lobby-split{grid-template-columns:1fr}}.lobby-error{color:var(--danger);text-align:center;font-size:14px}.lobby-hint{color:var(--text);font-size:13px}.lobby-info{color:var(--accent-strong);text-align:center;font-size:14px}.recovery-code{letter-spacing:1px;text-align:center;border:1px dashed var(--accent-border);background:var(--accent-bg);color:var(--text-h);-webkit-user-select:all;user-select:all;border-radius:10px;padding:16px;font-family:ui-monospace,Consolas,monospace;font-size:22px}.link-btn{color:var(--accent);cursor:pointer;font-size:inherit;background:0 0;border:none;padding:0;text-decoration:underline}.players-bar{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:16px;display:flex}.player-chip{border:1px solid var(--border);background:var(--bg-soft);border-radius:999px;align-items:center;gap:6px;padding:6px 12px;font-size:13px;display:flex}.player-chip.active{border-color:var(--accent);background:var(--accent-bg)}.dot{border-radius:50%;width:8px;height:8px}.dot.online{background:#4caf50}.dot.offline{background:#bbb}.promotion-overlay{background:#00000073;border-radius:8px;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.promotion-picker{background:var(--bg);border-radius:12px;flex-direction:column;align-items:center;gap:12px;padding:20px;display:flex;box-shadow:0 10px 30px #0000004d}.promotion-choices{gap:8px;display:flex}.promotion-choice{border:1px solid var(--border);background:var(--bg-soft);cursor:pointer;border-radius:8px;width:56px;height:56px;font-size:32px}.promotion-choice:hover{border-color:var(--accent);background:var(--accent-bg)}.promotion-cancel{color:var(--text);cursor:pointer;background:0 0;border:none;font-size:13px;text-decoration:underline}.admin-table-wrap{width:100%;overflow-x:auto}.admin-table{border-collapse:collapse;width:100%;font-size:14px}.admin-table th,.admin-table td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:8px 10px}.admin-table th{color:var(--text);text-transform:uppercase;letter-spacing:.5px;font-size:12px}.admin-row{cursor:pointer}.admin-row:hover{background:var(--bg-soft)}.admin-row-detail td{white-space:normal;color:var(--text);background:var(--code-bg);font-family:ui-monospace,Consolas,monospace;font-size:13px}.admin-empty{color:var(--text);text-align:center}.modal-overlay{z-index:50;background:#00000080;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-card{background:var(--bg);text-align:center;border-radius:16px;flex-direction:column;gap:14px;width:100%;max-width:380px;padding:28px;display:flex;box-shadow:0 20px 50px #00000059}.modal-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}