:root{--bg-primary: #0a0a0a;--bg-secondary: #141414;--bg-tertiary: #1e1e1e;--bg-card: #181818;--accent-primary: #ff3366;--accent-secondary: #00d4aa;--accent-tertiary: #ffcc00;--text-primary: #ffffff;--text-secondary: #a0a0a0;--text-muted: #666666;--border-color: #2a2a2a;--border-active: #404040;--success: #00d4aa;--warning: #ffcc00;--error: #ff3366;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{display:flex;flex-direction:column;min-height:100vh}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}.header-left{display:flex;align-items:center;gap:16px}.logo{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:700;color:var(--text-primary);text-decoration:none}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-tertiary));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem}.header-actions{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;font-size:.9rem;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{background:#e62e5c;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--border-color);border-color:var(--border-active)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-tertiary)}.btn-icon{width:40px;height:40px;padding:0}.main{display:flex;flex:1;overflow:hidden}.sidebar{width:280px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;overflow-y:auto}.sidebar-section{padding:16px;border-bottom:1px solid var(--border-color)}.sidebar-title{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:12px}.sidebar-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.tool-item{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 8px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.tool-item:hover{border-color:var(--border-active);background:var(--border-color)}.tool-item.active{border-color:var(--accent-primary);background:#ff33661a}.tool-icon{font-size:1.4rem}.tool-label{font-size:.75rem;color:var(--text-secondary);text-align:center}.canvas-container{flex:1;display:flex;flex-direction:column;background:var(--bg-primary);overflow:hidden}.canvas-toolbar{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.toolbar-group{display:flex;align-items:center;gap:4px;padding:4px;background:var(--bg-tertiary);border-radius:var(--radius-sm)}.toolbar-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.toolbar-btn:hover{color:var(--text-primary);background:var(--border-color)}.toolbar-btn.active{color:var(--text-primary);background:var(--accent-primary)}.toolbar-divider{width:1px;height:24px;background:var(--border-color);margin:0 8px}.canvas-viewport{flex:1;display:flex;align-items:center;justify-content:center;padding:40px;overflow:auto;background:radial-gradient(circle at center,var(--bg-secondary) 1px,transparent 1px);background-size:20px 20px}.canvas-page{width:420px;height:594px;background:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.page-element{position:absolute;cursor:move;-webkit-user-select:none;user-select:none}.page-element.selected{outline:2px solid var(--accent-primary);outline-offset:2px}.element-text{padding:8px;min-width:50px;min-height:24px;font-size:16px;line-height:1.4;color:#1a1a1a}.element-image{background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;overflow:hidden}.element-image img{width:100%;height:100%;object-fit:cover}.element-shape{background:var(--accent-primary);opacity:.8}.properties-panel{width:300px;background:var(--bg-secondary);border-left:1px solid var(--border-color);overflow-y:auto}.panel-section{padding:16px;border-bottom:1px solid var(--border-color)}.panel-title{font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:12px}.input-group{margin-bottom:12px}.input-label{display:block;font-size:.75rem;color:var(--text-muted);margin-bottom:6px}.input{width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;transition:border-color var(--transition-fast)}.input:focus{outline:none;border-color:var(--accent-primary)}.input-row{display:flex;gap:8px}.input-row .input-group{flex:1}.color-picker{display:flex;gap:6px;flex-wrap:wrap}.color-swatch{width:28px;height:28px;border-radius:var(--radius-sm);cursor:pointer;border:2px solid transparent;transition:all var(--transition-fast)}.color-swatch:hover{transform:scale(1.1)}.color-swatch.active{border-color:var(--text-primary)}.pages-panel{padding:16px;border-bottom:1px solid var(--border-color)}.page-thumbnail{width:100%;aspect-ratio:1 / 1.414;background:#fff;border:2px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);margin-bottom:8px;display:flex;align-items:center;justify-content:center;font-size:.7rem;color:#999}.page-thumbnail:hover{border-color:var(--border-active)}.page-thumbnail.active{border-color:var(--accent-primary)}.add-page-btn{width:100%;padding:12px;background:var(--bg-tertiary);border:2px dashed var(--border-color);border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast)}.add-page-btn:hover{border-color:var(--accent-secondary);color:var(--accent-secondary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border-radius:var(--radius-lg);width:90%;max-width:500px;max-height:90vh;overflow:hidden;box-shadow:var(--shadow-lg)}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-color)}.modal-title{font-size:1.2rem;font-weight:600}.modal-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-body{padding:24px;overflow-y:auto;max-height:calc(90vh - 160px)}.export-option{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);margin-bottom:12px}.export-option:hover{border-color:var(--accent-primary);background:#ff33660d}.export-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:1.5rem}.export-info{flex:1}.export-name{font-weight:500;margin-bottom:4px}.export-desc{font-size:.8rem;color:var(--text-muted)}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;text-align:center}.welcome-icon{width:80px;height:80px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-tertiary));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:2.5rem;margin-bottom:24px}.welcome-title{font-size:2rem;font-weight:700;margin-bottom:12px}.welcome-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:32px;max-width:400px}.welcome-actions{display:flex;gap:12px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:.85rem;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.form-input{width:100%;padding:12px 14px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.95rem}.form-input:focus{outline:none;border-color:var(--accent-primary)}.form-hint{font-size:.75rem;color:var(--text-muted);margin-top:6px}.tabs{display:flex;gap:4px;padding:4px;background:var(--bg-tertiary);border-radius:var(--radius-sm);margin-bottom:16px}.tab{flex:1;padding:10px 16px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.85rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.tab:hover{color:var(--text-primary)}.tab.active{background:var(--bg-secondary);color:var(--text-primary)}.slider-container{display:flex;align-items:center;gap:12px}.slider{flex:1;height:4px;background:var(--bg-tertiary);border-radius:2px;-webkit-appearance:none;-moz-appearance:none;appearance:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;background:var(--accent-primary);border-radius:50%;cursor:pointer}.slider-value{font-size:.85rem;color:var(--text-secondary);min-width:40px;text-align:right}@media (max-width: 1024px){.sidebar{width:240px}.properties-panel{width:260px}}@media (max-width: 768px){.main{flex-direction:column}.sidebar,.properties-panel{width:100%;max-height:200px}.canvas-page{width:300px;height:424px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}.animate-slide-up{animation:slideUp var(--transition-normal) forwards}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-active)}