:root{--color-primary: #ff2442;--color-primary-hover: #e61f3b;--color-primary-light: rgba(255, 36, 66, .1);--color-bg: #0d0d0f;--color-bg-elevated: #18181b;--color-bg-card: #1f1f23;--color-border: #2d2d32;--color-border-hover: #3d3d42;--color-text: #fafafa;--color-text-secondary: #a1a1aa;--color-text-muted: #71717a;--color-success: #22c55e;--color-warning: #f59e0b;--color-error: #ef4444;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .6);--shadow-glow: 0 0 20px rgba(255, 36, 66, .3);--font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 24px;--font-size-2xl: 32px;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--sidebar-width: 320px;--header-height: 64px;--workflow-bar-height: 80px}*,*: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-color:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh;overflow:hidden}#root{min-height:100vh;display:flex;flex-direction:column}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--color-primary) 0%,#ff6b81 100%);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--color-bg-card);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg-elevated);border-color:var(--color-border-hover)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg-card);color:var(--color-text)}.btn-icon{width:36px;height:36px;padding:0}.input{width:100%;padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-fast)}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.input::placeholder{color:var(--color-text-muted)}.label{display:block;font-size:var(--font-size-xs);font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--space-xs);text-transform:uppercase;letter-spacing:.5px}.slider{-webkit-appearance:none;width:100%;height:6px;background:var(--color-bg);border-radius:var(--radius-full);outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;background:var(--color-primary);border-radius:50%;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform var(--transition-fast)}.slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-md)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.card-title{font-size:var(--font-size-sm);font-weight:600}.app-layout{display:grid;grid-template-rows:var(--header-height) 1fr;grid-template-columns:var(--sidebar-width) 1fr;grid-template-areas:"header header" "sidebar canvas";height:100vh;overflow:hidden}.header{grid-area:header;display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-lg);background:var(--color-bg-elevated);border-bottom:1px solid var(--color-border);z-index:100}.sidebar{grid-area:sidebar;display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-elevated);border-right:1px solid var(--color-border);overflow-y:auto}.canvas-area{grid-area:canvas;display:flex;align-items:center;justify-content:center;padding:var(--space-lg);background:var(--color-bg);overflow:hidden}.workflow-bar{grid-area:workflow;display:flex;align-items:center;gap:var(--space-md);padding:0 var(--space-lg);background:var(--color-bg-elevated);border-top:1px solid var(--color-border);overflow-x:auto}.logo{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-lg);font-weight:700;color:var(--color-text)}.logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--color-primary) 0%,#ff6b81 100%);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:18px}.header-actions{display:flex;align-items:center;gap:var(--space-sm)}.canvas-container{position:relative;max-width:100%;max-height:100%;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}.canvas-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md);width:640px;height:400px;background:var(--color-bg-card);border:2px dashed var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-base)}.canvas-placeholder:hover{border-color:var(--color-primary);color:var(--color-text-secondary)}.canvas-placeholder-icon{font-size:48px;opacity:.5}.canvas-placeholder-text{font-size:var(--font-size-sm)}.preview-canvas{display:block;max-width:100%;max-height:calc(100vh - var(--header-height) - var(--workflow-bar-height) - var(--space-2xl) * 2);border-radius:var(--radius-md)}.control-group{display:flex;flex-direction:column;gap:var(--space-sm)}.control-row{display:flex;align-items:center;gap:var(--space-sm)}.color-picker{width:36px;height:36px;padding:0;border:2px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;overflow:hidden}.color-picker::-webkit-color-swatch-wrapper{padding:0}.color-picker::-webkit-color-swatch{border:none}.template-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-sm)}.template-item{aspect-ratio:3/4;background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);overflow:hidden}.template-item:hover{border-color:var(--color-border-hover);transform:translateY(-2px)}.template-item.active{border-color:var(--color-primary);box-shadow:var(--shadow-glow)}.workflow-step{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-sm);white-space:nowrap;cursor:grab;transition:all var(--transition-fast)}.workflow-step:hover{border-color:var(--color-border-hover)}.workflow-step.active{border-color:var(--color-primary);background:var(--color-primary-light)}.workflow-step-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:var(--color-bg);border-radius:var(--radius-sm);font-size:12px}.workflow-connector{width:24px;height:2px;background:var(--color-border);flex-shrink:0}.ratio-selector{display:flex;gap:var(--space-xs)}.ratio-btn{flex:1;padding:var(--space-sm);font-size:var(--font-size-xs);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.ratio-btn:hover{border-color:var(--color-border-hover);color:var(--color-text)}.ratio-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.drop-zone{transition:all var(--transition-base)}.drop-zone.dragging{border-color:var(--color-primary);background:var(--color-primary-light)}@media (max-width: 768px){:root{--sidebar-width: 100%;--workflow-bar-height: 60px}.app-layout{grid-template-columns:1fr;grid-template-rows:var(--header-height) auto 1fr var(--workflow-bar-height);grid-template-areas:"header" "sidebar" "canvas" "workflow"}.sidebar{flex-direction:row;overflow-x:auto;padding:var(--space-sm);border-right:none;border-bottom:1px solid var(--color-border)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-base) ease-out}.header-left{display:flex;align-items:center;gap:var(--space-md)}.header-divider{width:1px;height:24px;background:var(--color-border)}.history-controls{display:flex;gap:var(--space-xs)}.history-controls .btn:disabled{opacity:.3;cursor:not-allowed}.template-preview{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:var(--space-xs);padding:var(--space-sm)}.template-icon{font-size:24px}.template-name{font-size:var(--font-size-xs);color:var(--color-text-secondary);text-align:center}.template-item:hover .template-name{color:var(--color-text)}.template-item.active .template-name{color:var(--color-primary)}.textarea{resize:none;font-family:inherit;line-height:1.5}.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a1a1aa' d='M6 8L2 4h8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px;cursor:pointer}.slider-value{min-width:48px;text-align:right;font-size:var(--font-size-sm);color:var(--color-text-secondary);font-variant-numeric:tabular-nums}.hint-text{font-size:var(--font-size-xs);color:var(--color-text-muted)}.preview-canvas.dragging-text{cursor:grabbing}.canvas-placeholder-hint{font-size:var(--font-size-xs);color:var(--color-text-muted)}.workflow-label{font-size:var(--font-size-xs);color:var(--color-text-muted);white-space:nowrap;margin-right:var(--space-sm)}.privacy-badge{font-size:11px;color:var(--color-text-muted);display:flex;align-items:center;gap:var(--space-xs)}.privacy-dot{width:8px;height:8px;background:var(--color-success);border-radius:50%;animation:pulse 2s infinite}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}.sidebar::-webkit-scrollbar-thumb:hover{background:var(--color-border-hover)}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.color-picker.small{width:24px;height:24px;border-radius:var(--radius-sm)}.control-grid{display:flex;gap:var(--space-sm)}.control-grid.compact{display:flex;flex-direction:column}.divider{height:1px;background:var(--color-border);margin:var(--space-md) 0}.btn-sm{font-size:12px;padding:2px 8px;height:24px}.active-border{border-color:var(--color-primary)!important}