:root{--bg-primary: #0f0f1a;--bg-secondary: #1a1a2e;--bg-tertiary: #16213e;--bg-glass: rgba(26, 26, 46, .8);--text-primary: #e8e8e8;--text-secondary: #a0a0a0;--text-muted: #666;--accent-primary: #06b6d4;--accent-secondary: #ec4899;--accent-glow: rgba(6, 182, 212, .3);--border-color: rgba(255, 255, 255, .1);--border-glow: rgba(236, 72, 153, .5);--success: #22c55e;--error: #ef4444;--warning: #f59e0b;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--radius-sm: .375rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--accent-glow);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;background-image:radial-gradient(ellipse at 20% 0%,rgba(6,182,212,.15) 0%,transparent 50%),radial-gradient(ellipse at 80% 100%,rgba(236,72,153,.15) 0%,transparent 50%)}.app-container{max-width:900px;margin:0 auto;padding:var(--space-xl)}.header{text-align:center;margin-bottom:var(--space-2xl)}.header h1{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-sm)}.header p{color:var(--text-secondary);font-size:1.1rem}.panel{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:border-color var(--transition-normal),box-shadow var(--transition-normal)}.panel:hover{border-color:var(--border-glow);box-shadow:var(--shadow-glow)}.panel-title{font-size:1.1rem;font-weight:600;margin-bottom:var(--space-md);color:var(--text-primary);display:flex;align-items:center;gap:var(--space-sm)}.panel-title svg{width:20px;height:20px;color:var(--accent-primary)}label{display:block;font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-xs)}input[type=text],input[type=number],textarea{width:100%;padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-mono);font-size:.95rem;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input[type=text]:focus,input[type=number]:focus,textarea:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}textarea{min-height:80px;resize:vertical}input[type=color]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:40px;height:40px;border:2px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background:transparent;padding:2px;transition:border-color var(--transition-fast),transform var(--transition-fast)}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:calc(var(--radius-md) - 4px)}input[type=color]:hover{border-color:var(--accent-primary);transform:scale(1.05)}.color-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--space-md)}.color-item{display:flex;flex-direction:column;align-items:center;gap:var(--space-xs)}.color-item label{margin-bottom:0;text-transform:capitalize}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);font-family:var(--font-sans);font-size:.95rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-secondary);border-color:var(--accent-primary)}.btn-group{display:flex;gap:var(--space-sm);flex-wrap:wrap}.input-row{display:flex;gap:var(--space-md);align-items:flex-end;margin-bottom:var(--space-md)}.input-row .input-group{flex:1}.input-row .btn{flex-shrink:0}.form-group{margin-bottom:var(--space-md)}.collapsible-header{display:flex;align-items:center;justify-content:space-between;cursor:pointer;padding:var(--space-sm) 0;-webkit-user-select:none;user-select:none}.collapsible-header:hover{color:var(--accent-primary)}.collapsible-icon{transition:transform var(--transition-normal)}.collapsible-icon.open{transform:rotate(180deg)}.collapsible-content{max-height:0;overflow:hidden;transition:max-height var(--transition-normal)}.collapsible-content.open{max-height:1500px}.output-container{display:flex;flex-direction:column;align-items:center;gap:var(--space-lg)}.layer-views{display:flex;gap:var(--space-xl);justify-content:center;align-items:center;flex-wrap:wrap}.layer-view{text-align:center}.layer-view h3{font-size:.9rem;color:var(--text-secondary);margin-bottom:var(--space-sm);text-transform:uppercase;letter-spacing:.05em}.layer-view .svg-container{display:inline-block}.error-message{background:#ef444426;border:1px solid var(--error);color:var(--error);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:.875rem;margin-top:var(--space-sm);display:none;align-items:center;justify-content:space-between;gap:var(--space-sm)}.error-message.visible{display:flex}.error-text{flex:1}.error-close{background:none;border:none;color:var(--error);font-size:1.5rem;line-height:1;padding:0;cursor:pointer;opacity:.7;transition:opacity .2s;flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center}.error-close:hover{opacity:1}.share-section{display:flex;gap:var(--space-sm);align-items:center;margin-top:var(--space-md)}.share-section input{flex:1;font-size:.85rem}.short-code-row{display:flex;gap:var(--space-sm);align-items:center}.short-code-row input{flex:1;font-size:.85rem}.short-code-row .btn{flex-shrink:0}@media (max-width: 768px){.color-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width: 600px){.app-container{padding:var(--space-md)}.header h1{font-size:1.75rem}.color-grid{grid-template-columns:repeat(2,1fr)}.layer-views{flex-direction:column;align-items:center}.input-row{flex-direction:column;align-items:stretch}.input-row .btn{width:100%}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-slow) ease-out}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.pulse{animation:pulse 1.5s ease-in-out infinite}.loading{opacity:.5;pointer-events:none}