.app{display:flex;flex-direction:column;width:100%;min-height:100%;height:100%}.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:16px clamp(16px,4vw,32px);background:#ffffffd1;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.toolbar-left{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;background:var(--accent);color:#fff;font-size:18px;box-shadow:0 12px 30px #2563eb47}.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.controls label{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-muted);padding:8px 12px;border-radius:10px;background:#ffffffe6;border:1px solid var(--border)}.controls input[type=color]{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;width:32px;height:24px;border-radius:6px;cursor:pointer;padding:0;background:transparent}.controls input[type=range]{width:110px;accent-color:var(--accent)}.range-value{min-width:1.5em;font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink)}.toggle-group{display:inline-flex;border:1px solid var(--border);border-radius:12px;background:#ffffffe6;overflow:hidden}.toggle-group button{all:unset;padding:10px 16px;font-size:13px;font-weight:600;color:var(--ink-muted);cursor:pointer;transition:background .2s,color .2s}.toggle-group button.active{background:var(--accent);color:#fff}.pill-button{all:unset;display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;font-size:13px;font-weight:600;border-radius:999px;color:var(--accent);cursor:pointer;border:1px solid rgba(37,99,235,.2);background:#2563eb14;transition:transform .15s}.pill-button:hover{transform:translateY(-1px)}.pill-button.danger{color:var(--danger);border-color:#d61f4a2e;background:#d61f4a14}.board-shell{position:relative;flex:1;min-height:0;margin:clamp(12px,4vw,24px);border-radius:28px;background:var(--board);box-shadow:var(--shadow);overflow:hidden;border:1px solid var(--border)}.board-shell.is-3d{background:radial-gradient(circle at 30% 20%,rgba(96,165,250,.18),transparent 45%),radial-gradient(circle at 80% 70%,rgba(14,165,233,.12),transparent 40%),#0f172a}.board-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;text-align:center;font-size:clamp(16px,2.6vw,22px);color:#0f172a47;pointer-events:none;padding:0 24px;z-index:1}.board-shell.is-3d .board-hint{color:#e2e8f08c;align-items:flex-start;padding-top:28px}.board-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.board-canvas-3d{display:block}.board-canvas-3d.is-dropping .drop-overlay{opacity:1}.drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:4;pointer-events:none;border:2px dashed rgba(96,165,250,.7);border-radius:inherit;background:#2563eb14;opacity:0;transition:opacity .15s}.drag-ghost{position:fixed;z-index:100;transform:translate(-50%,-50%);pointer-events:none;width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;background:#2563ebd9;border:1px solid rgba(191,219,254,.8);border-radius:12px;box-shadow:0 12px 30px #0f172a59}.shape-palette{position:absolute;top:16px;left:16px;z-index:5;width:min(168px,calc(100% - 32px));padding:12px;border-radius:16px;background:#0f172ac7;border:1px solid rgba(148,163,184,.35);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);color:#e2e8f0;box-shadow:0 16px 40px #02061759}.shape-palette-title{margin:0 0 10px;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#94a3b8}.shape-palette-list{display:grid;gap:6px}.shape-chip{all:unset;display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;cursor:grab;font-size:13px;font-weight:600;color:#cbd5e1;border:1px solid transparent;transition:background .15s,border-color .15s,color .15s}.shape-chip:hover{background:#2563eb2e;color:#fff}.shape-chip.active{background:#2563eb47;border-color:#60a5fa8c;color:#fff}.shape-chip:active{cursor:grabbing}.shape-chip-icon{width:22px;text-align:center;font-size:16px;line-height:1}.shape-palette-hint{margin:0 0 10px;font-size:11px;line-height:1.45;color:#94a3b8}.shape-hotkeys{margin-top:12px;padding-top:10px;border-top:1px solid rgba(148,163,184,.25);display:grid;gap:6px}.hotkey-row{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:4px;font-size:11px;color:#94a3b8}.hotkey-row.active{color:#f8fafc}.hotkey-row.muted{color:#64748b}.hotkey-row kbd{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 4px;border-radius:4px;border:1px solid rgba(148,163,184,.4);background:#0f172ab3;font-size:10px;font-weight:700;color:#e2e8f0}.site-footer{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 14px;padding:10px 16px 14px;font-size:12px}.site-footer a{color:var(--ink-muted, #5b6b79);text-decoration:none}.site-footer a:hover{color:var(--accent, #2563eb);text-decoration:underline}@media(max-width:720px){.toolbar{justify-content:center;gap:16px}.toolbar-left{width:100%;justify-content:center}.controls{justify-content:center}.board-shell{margin:12px;border-radius:20px}.toggle-group button{padding:9px 12px;font-size:12px}.shape-palette{top:10px;left:10px;width:min(148px,calc(100% - 20px));padding:10px}.shape-palette-hint{display:none}}:root{color-scheme:light;--bg-top: #e8eef8;--bg-bottom: #f7f4ef;--board: #ffffff;--ink: #1f2933;--ink-muted: #52606d;--accent: #2563eb;--accent-soft: rgba(37, 99, 235, .12);--border: #d9e2ec;--shadow: 0 24px 60px rgba(15, 23, 42, .14);--danger: #d61f4a;font-family:Pretendard,Noto Sans KR,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*,*:before,*:after{box-sizing:border-box}html,body,#root{margin:0;min-height:100%;height:100%}body{background:radial-gradient(1200px 600px at 12% -10%,rgba(37,99,235,.16),transparent 55%),radial-gradient(900px 500px at 90% 0%,rgba(14,116,144,.12),transparent 50%),linear-gradient(180deg,var(--bg-top),var(--bg-bottom));color:var(--ink)}button,input{font:inherit}