@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-glass:#12121abf;--bg-glass-hover:#181824d9;--border-glass:#ffffff14;--border-glass-hover:#ffffff26;--text-primary:#f0f0f5;--text-secondary:#8888a0;--text-muted:#55556a;--accent-cyan:#00e5ff;--accent-magenta:#e040fb;--accent-orange:#ff6d00;--accent-lime:#76ff03;--accent-blue:#2979ff;--gradient-primary:linear-gradient(135deg, #00e5ff 0%, #e040fb 100%);--gradient-warm:linear-gradient(135deg, #ff6d00 0%, #e040fb 100%);--gradient-cool:linear-gradient(135deg, #2979ff 0%, #00e5ff 100%);--shadow-glow-cyan:0 0 20px #00e5ff4d;--shadow-glow-magenta:0 0 20px #e040fb4d;--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.3s cubic-bezier(.4, 0, .2, 1);--transition-spring:.4s cubic-bezier(.175, .885, .32, 1.275)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body{background:var(--bg-primary);width:100%;height:100%;color:var(--text-primary);touch-action:none;-webkit-user-select:none;user-select:none;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;overflow:hidden}#canvas-container{z-index:0;background:var(--bg-primary);position:fixed;inset:0}#art-canvas{width:100%;height:100%;display:block}#art-canvas path{fill:none;stroke-linecap:round;stroke-linejoin:round}#onboarding{z-index:1000;background:var(--bg-primary);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:2rem;transition:opacity .5s,visibility .5s;display:flex;position:fixed;inset:0}#onboarding.hidden{opacity:0;visibility:hidden;pointer-events:none}#onboarding h1{letter-spacing:-.03em;background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:2.5rem;font-weight:700}#onboarding .subtitle{color:var(--text-secondary);max-width:280px;margin-bottom:2.5rem;font-size:1rem;font-weight:300;line-height:1.6}#onboarding .icon-bus{margin-bottom:1.5rem;font-size:4rem;animation:3s ease-in-out infinite float}@keyframes float{0%,to{transform:translateY(0)rotate(-2deg)}50%{transform:translateY(-12px)rotate(2deg)}}#btn-start{background:var(--gradient-primary);color:#0a0a0f;cursor:pointer;letter-spacing:.02em;transition:transform var(--transition-spring), box-shadow var(--transition-normal);box-shadow:var(--shadow-glow-cyan);border:none;border-radius:50px;padding:1rem 3rem;font-family:Inter,sans-serif;font-size:1.1rem;font-weight:600;position:relative;overflow:hidden}#btn-start:after{content:"";opacity:0;transition:opacity var(--transition-fast);background:linear-gradient(135deg,#ffffff40 0%,#0000 50%);position:absolute;inset:0}#btn-start:hover{transform:scale(1.05);box-shadow:0 0 40px #00e5ff80}#btn-start:hover:after{opacity:1}#btn-start:active{transform:scale(.97)}#onboarding .note{color:var(--text-muted);max-width:260px;margin-top:1.5rem;font-size:.75rem;line-height:1.5}#header{z-index:100;padding:.75rem 1rem;padding-top:max(.75rem, env(safe-area-inset-top));background:var(--bg-glass);-webkit-backdrop-filter:blur(20px)saturate(1.5);border-bottom:1px solid var(--border-glass);justify-content:space-between;align-items:center;display:flex;position:fixed;top:0;left:0;right:0}#header .logo{letter-spacing:-.02em;background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1rem;font-weight:700}#recording-indicator{color:var(--text-secondary);transition:color var(--transition-normal);align-items:center;gap:.5rem;font-size:.8rem;font-weight:500;display:flex}#recording-indicator.active{color:#ff1744}#recording-indicator .dot{background:var(--text-muted);width:8px;height:8px;transition:background var(--transition-normal);border-radius:50%}#recording-indicator.active .dot{background:#ff1744;animation:1.2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}#toolbar{z-index:100;padding:.75rem 1rem;padding-bottom:max(.75rem, env(safe-area-inset-bottom));background:var(--bg-glass);-webkit-backdrop-filter:blur(20px)saturate(1.5);border-top:1px solid var(--border-glass);flex-direction:column;gap:.75rem;display:flex;position:fixed;bottom:0;left:0;right:0}.toolbar-row{justify-content:center;align-items:center;gap:.5rem;display:flex}.btn-icon{border-radius:var(--radius-sm);border:1px solid var(--border-glass);background:var(--bg-glass);width:44px;height:44px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);-webkit-backdrop-filter:blur(10px);justify-content:center;align-items:center;font-size:1.2rem;display:flex;position:relative;overflow:hidden}.btn-icon:hover{border-color:var(--border-glass-hover);background:var(--bg-glass-hover);color:var(--text-primary)}.btn-icon:active{transform:scale(.92)}.btn-icon.active{border-color:var(--accent-cyan);color:var(--accent-cyan);box-shadow:inset 0 0 12px #00e5ff26}.btn-icon svg{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}#btn-record{border:2px solid var(--border-glass);background:var(--bg-glass);border-radius:50%;width:56px;height:56px;position:relative}#btn-record:before{content:"";background:var(--text-secondary);width:24px;height:24px;transition:all var(--transition-spring);border-radius:50%}#btn-record.recording{border-color:#ff1744;box-shadow:0 0 20px #ff17444d}#btn-record.recording:before{background:#ff1744;border-radius:4px;width:18px;height:18px}.mode-selector{border-radius:var(--radius-md);border:1px solid var(--border-glass);background:#ffffff0a;gap:.25rem;padding:.2rem;display:flex}.mode-btn{border-radius:calc(var(--radius-md) - 3px);color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;padding:.4rem .85rem;font-family:Inter,sans-serif;font-size:.7rem;font-weight:500}.mode-btn:hover{color:var(--text-secondary)}.mode-btn.active{background:var(--accent-cyan);color:#0a0a0f;font-weight:600}.color-palette{align-items:center;gap:.4rem;display:flex}.color-swatch{cursor:pointer;width:28px;height:28px;transition:all var(--transition-spring);border:2px solid #0000;border-radius:50%;position:relative}.color-swatch:hover{transform:scale(1.15)}.color-swatch.active{border-color:var(--text-primary);transform:scale(1.15);box-shadow:0 0 12px}.color-swatch.rainbow{background:conic-gradient(red,#f80,#ff0,#0f0,#0ff,#08f,#f0f,red)}.slider-container{align-items:center;gap:.5rem;padding:0 .5rem;display:flex}.slider-container label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;font-size:.7rem}.slider-container input[type=range]{appearance:none;background:#ffffff1a;border-radius:2px;outline:none;flex:1;height:4px}.slider-container input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent-cyan);cursor:pointer;width:18px;height:18px;transition:transform var(--transition-spring);border-radius:50%;box-shadow:0 0 8px #00e5ff66}.slider-container input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}#settings-panel{z-index:200;background:var(--bg-secondary);border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg);border:1px solid var(--border-glass);transition:transform var(--transition-spring);border-bottom:none;padding:1.5rem;position:fixed;bottom:0;left:0;right:0;transform:translateY(100%)}#settings-panel.open{transform:translateY(0)}#settings-panel .handle{background:var(--text-muted);border-radius:2px;width:36px;height:4px;margin:0 auto 1.25rem}#settings-panel h3{color:var(--text-primary);margin-bottom:1rem;font-size:.85rem;font-weight:600}.setting-row{border-bottom:1px solid var(--border-glass);justify-content:space-between;align-items:center;padding:.75rem 0;display:flex}.setting-row:last-child{border-bottom:none}.setting-row label{color:var(--text-secondary);font-size:.85rem}#stats{z-index:50;color:var(--text-muted);font-variant-numeric:tabular-nums;text-align:right;pointer-events:none;background:var(--bg-glass);border-radius:var(--radius-sm);border:1px solid var(--border-glass);-webkit-backdrop-filter:blur(10px);transition:opacity var(--transition-normal);opacity:.75;padding:.6rem .8rem;font-size:.7rem;line-height:1.5;position:fixed;top:75px;right:1rem}#stats div{margin-bottom:2px}#stat-speed,#stat-heading,#stat-tilt{color:var(--text-secondary);font-weight:500}.toast{z-index:300;background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-glass);border-radius:var(--radius-md);color:var(--text-primary);opacity:0;transition:all var(--transition-spring);pointer-events:none;white-space:nowrap;padding:.75rem 1.5rem;font-size:.85rem;position:fixed;bottom:140px;left:50%;transform:translate(-50%)translateY(20px)}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (width>=768px){#toolbar{border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-left:1px solid var(--border-glass);border-right:1px solid var(--border-glass);max-width:500px;left:50%;right:auto;transform:translate(-50%)}#settings-panel{max-width:500px;left:50%;right:auto;transform:translate(-50%)translateY(100%)}#settings-panel.open{transform:translate(-50%)translateY(0)}}@media (orientation:landscape) and (height<=500px){#toolbar{flex-direction:row;padding:.5rem}.toolbar-row{flex-direction:row}}.start-indicator{transform-box:fill-box;transform-origin:50%;pointer-events:none;animation:.8s cubic-bezier(.1,.8,.3,1) forwards start-ping}@keyframes start-ping{0%{r:4px;stroke-width:3px;opacity:1}to{r:35px;stroke-width:1px;opacity:0}}