:root{--bg: #0e1116;--panel: #161b22;--text: #e6edf3;--muted: #8b949e;--accent: #58a6ff;--danger: #f85149;--ok: #3fb950}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif}button{background:var(--panel);color:var(--text);border:1px solid #30363d;padding:8px 14px;border-radius:6px;cursor:pointer;font-size:14px}button:hover{border-color:var(--accent)}button.primary{background:var(--accent);color:#0e1116;border-color:var(--accent);font-weight:600}button.primary:hover{filter:brightness(1.1)}button:disabled{opacity:.4;cursor:not-allowed}input{background:var(--panel);color:var(--text);border:1px solid #30363d;border-radius:6px;padding:8px 12px;font-size:14px}.app{max-width:900px;margin:0 auto;padding:clamp(12px,4vw,24px);min-height:100vh}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid #30363d;flex-wrap:wrap;gap:8px}.header h1{margin:0;font-size:clamp(18px,4.5vw,22px);font-weight:600}.player-tag{font-size:13px;color:var(--muted)}.menu{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:24px}.mode-card{background:var(--panel);border:1px solid #30363d;border-radius:8px;padding:20px;cursor:pointer;transition:border-color .15s}.mode-card:hover{border-color:var(--accent)}.mode-card h2{margin:0 0 8px;font-size:16px}.mode-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}.config-row{display:flex;gap:12px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.config-row label{font-size:13px;color:var(--muted)}select{background:var(--panel);color:var(--text);border:1px solid #30363d;border-radius:6px;padding:6px 10px;font-size:14px}.game-area{display:flex;flex-direction:column;align-items:center;gap:20px}.hud{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted);justify-content:center}.hud strong{color:var(--text)}.hud>div{white-space:nowrap}.board-wrap{padding:clamp(6px,1.5vw,12px);background:var(--panel);border-radius:8px;border:1px solid #30363d;max-width:100%}.board{display:grid;border:1px solid #00000044;-webkit-user-select:none;user-select:none}.square{width:var(--sq, 72px);height:var(--sq, 72px);display:flex;align-items:center;justify-content:center;font-size:calc(var(--sq, 72px) * .72);line-height:1;position:relative;cursor:pointer}.square.marked-correct:after,.square.marked-wrong:after{content:"";position:absolute;top:6px;right:6px;bottom:6px;left:6px;border-radius:4px;pointer-events:none}.square.marked-correct:after{box-shadow:inset 0 0 0 3px var(--ok)}.square.marked-wrong:after{box-shadow:inset 0 0 0 3px var(--danger)}.square.hint:after{content:"";position:absolute;top:6px;right:6px;bottom:6px;left:6px;border-radius:4px;box-shadow:inset 0 0 0 2px var(--accent)}.piece{pointer-events:none;-webkit-user-select:none;user-select:none}.palette{display:flex;flex-wrap:wrap;gap:6px;padding:10px;background:var(--panel);border-radius:8px;border:1px solid #30363d;max-width:min(640px,100%);justify-content:center}.palette .slot{width:clamp(36px,9vw,48px);height:clamp(36px,9vw,48px);display:flex;align-items:center;justify-content:center;font-size:clamp(26px,6.5vw,34px);background:#0e1116;border-radius:6px;cursor:grab;border:1px solid transparent;touch-action:none}.palette .slot:hover{border-color:var(--accent)}.palette .slot.dragging{opacity:.4}.palette .slot.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent) inset}.actions{display:flex;gap:12px;margin-top:8px}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--panel);border:1px solid #30363d;border-radius:10px;padding:28px;min-width:320px;max-width:480px}.modal h2{margin:0 0 12px}.modal p{color:var(--muted);margin:0 0 16px;font-size:14px;line-height:1.5}.modal .row{display:flex;gap:10px;margin-top:16px}.result-summary{text-align:center;padding:20px 0}.result-summary .score{font-size:48px;font-weight:700;color:var(--accent)}.result-summary .label{color:var(--muted);font-size:13px}.leaderboard{background:var(--panel);border:1px solid #30363d;border-radius:8px;padding:16px;margin-top:24px}.leaderboard h3{margin:0 0 12px;font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.leaderboard table{width:100%;border-collapse:collapse;font-size:13px}.leaderboard th,.leaderboard td{text-align:left;padding:6px 8px;border-bottom:1px solid #1f242d}.leaderboard th{color:var(--muted);font-weight:500}.leaderboard .rank{color:var(--muted);width:30px}.stats-grid{background:var(--panel);border:1px solid #30363d;border-radius:8px;padding:16px;margin-top:24px}.stats-grid h3{margin:0 0 12px;font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.stats-grid-table-wrap{overflow-x:auto}.stats-grid table{border-collapse:collapse;font-size:12px;min-width:100%}.stats-grid th,.stats-grid td{padding:8px 10px;text-align:center;border:1px solid #1f242d;min-width:92px}.stats-grid thead th{color:var(--muted);font-weight:500;font-size:11px;vertical-align:bottom}.stats-grid tbody th{text-align:left;color:var(--text);font-weight:600;background:#0e1116}.stats-grid td.empty{background:#0e1116;color:var(--muted)}.stats-grid td .ms{font-weight:600;color:var(--text)}.stats-grid td .rate{font-size:11px;color:#ffffffbf;margin-top:2px}.stats-grid .swatch{width:22px;height:22px;border-radius:3px;border:1px solid transparent;margin:0 auto 4px}.stats-callouts{margin-top:12px;font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:4px}.stats-callouts strong{color:var(--text)}