:root{--bg-top:#181926;--bg-bottom:#0e0f15;--text-main:#f4f4f5;--text-sub:#a1a1aa;--panel-bg:#181825bf;--panel-border:#ffffff1a;--btn-bg:#ffffff14;--btn-hover:#ffffff29;--primary-bg:#3b82f6;--primary-hover:#2563eb;--danger-bg:#ef444433;--danger-border:#ef444466;--danger-hover:#ef44444d}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body{background:radial-gradient(circle at 50% 40%, var(--bg-top), var(--bg-bottom));width:100%;height:100%;color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}#app{width:100%;height:100%;position:relative;overflow:hidden}#cube-canvas{touch-action:none;width:100%;height:100%;display:block;position:absolute;top:0;left:0}#hud{pointer-events:none;flex-direction:column;justify-content:space-between;width:100%;height:100%;padding:16px;display:flex;position:absolute;top:0;left:0}#hud-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.hud-pill{pointer-events:auto;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--panel-border);color:var(--text-main);letter-spacing:.5px;border-radius:9999px;padding:8px 16px;font-size:14px;font-weight:600}.hud-stats{pointer-events:auto;gap:12px;display:flex}.stat-item{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--panel-border);border-radius:12px;flex-direction:column;align-items:center;min-width:70px;padding:6px 14px;display:flex}.stat-label{text-transform:uppercase;color:var(--text-sub);letter-spacing:.5px;font-size:10px}.stat-value{font-variant-numeric:tabular-nums;color:#60a5fa;font-size:15px;font-weight:700}#hud-footer{flex-direction:column;align-items:center;gap:10px;width:100%;max-width:600px;margin:0 auto;display:flex}#app:not([data-mode=buttons]) .move-pad,#app[data-mode=buttons] [data-mode-hint=swipe],#app:not([data-mode=buttons]) [data-mode-hint=buttons],.hint-keyboard{display:none}@media (hover:hover) and (pointer:fine){.hint-keyboard{display:inline}}.mode-toggle{pointer-events:auto;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--panel-border);border-radius:9999px;gap:4px;padding:3px;display:flex}.mode-btn{color:var(--text-sub);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:9999px;padding:6px 16px;font-size:13px;font-weight:600;transition:all .15s}.mode-btn:hover:not([aria-pressed=true]){color:var(--text-main);background:var(--btn-hover)}.mode-btn[aria-pressed=true]{background:var(--primary-bg);color:#fff}.hud-hint{color:var(--text-sub);text-align:center;pointer-events:none;opacity:.85;text-shadow:0 1px 2px #0009;font-size:12px}.move-pad{pointer-events:auto;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--panel-border);border-radius:16px;grid-template-columns:repeat(6,1fr);gap:6px;width:100%;max-width:480px;padding:8px;display:grid}.move-btn{background:var(--btn-bg);border:1px solid var(--panel-border);min-width:40px;height:40px;color:var(--text-main);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;font-size:13px;font-weight:600;transition:all .15s;display:flex}.move-btn:hover:not(:disabled){background:var(--btn-hover);border-color:#ffffff40}.move-btn:active:not(:disabled){transform:scale(.95)}.move-btn:disabled{opacity:.35;cursor:not-allowed}.action-bar{pointer-events:auto;gap:8px;width:100%;max-width:480px;display:flex}.btn{cursor:pointer;border:1px solid #0000;border-radius:12px;flex:1;justify-content:center;align-items:center;min-width:40px;height:44px;font-size:14px;font-weight:600;transition:all .15s;display:flex}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.35;cursor:not-allowed}.btn-primary{background:var(--primary-bg);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-secondary{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border-color:var(--panel-border);color:var(--text-main)}.btn-secondary:hover:not(:disabled){background:var(--btn-hover)}.btn-danger{background:var(--danger-bg);border-color:var(--danger-border);color:#fca5a5}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}@media (width<=440px){#hud{padding:10px}.mode-btn{padding:5px 12px;font-size:12px}.move-pad{grid-template-columns:repeat(6,1fr);gap:4px;padding:6px}.move-btn{height:38px;font-size:11px}.btn{height:42px;font-size:13px}}