:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--bg-elevated: #22222e;--bg-hover: #2a2a38;--text-primary: #f8fafc;--text-secondary: #a1a1aa;--text-tertiary: #71717a;--text-muted: #52525b;--border-primary: #27272a;--border-secondary: #3f3f46;--border-accent: #6366f1;--accent-primary: #6366f1;--accent-secondary: #a855f7;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--info: #3b82f6;--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-xl: 0 20px 40px rgba(0, 0, 0, .6);--shadow-glow: 0 0 30px rgba(99, 102, 241, .3);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-modal: 200;--z-toast: 300;--z-loading: 400}[data-theme=light]{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-tertiary: #f1f5f9;--bg-elevated: #ffffff;--bg-hover: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-tertiary: #64748b;--text-muted: #94a3b8;--border-primary: #e2e8f0;--border-secondary: #cbd5e1;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 40px rgba(0, 0, 0, .15)}*,*: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;overflow:hidden}::selection{background:var(--accent-primary);color:#fff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.loading-screen{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--bg-primary);display:flex;align-items:center;justify-content:center;z-index:var(--z-loading)}.loading-content{text-align:center;animation:fadeIn .5s ease}.loading-logo{width:80px;height:80px;margin:0 auto var(--spacing-lg);animation:pulse 2s infinite}.loading-icon{width:100%;height:100%}.loading-title{font-size:2rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-sm)}.loading-subtitle{color:var(--text-secondary);font-size:.875rem;margin-bottom:var(--spacing-lg)}.loading-spinner{width:40px;height:40px;margin:0 auto;border:3px solid var(--border-primary);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}.app{display:flex;flex-direction:column;height:100vh;opacity:1;transition:opacity var(--transition-base)}.app.hidden{opacity:0;pointer-events:none}.header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-secondary);border-bottom:1px solid var(--border-primary);height:60px;flex-shrink:0}.header-left,.header-right{display:flex;align-items:center;gap:var(--spacing-sm)}.header-center{display:flex;align-items:center;gap:var(--spacing-md)}.logo{display:flex;align-items:center;gap:var(--spacing-sm)}.logo-icon{width:32px;height:32px}.logo-text{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.diagram-name-container{display:flex;align-items:center;gap:var(--spacing-xs)}.diagram-name-input{background:transparent;border:none;color:var(--text-primary);font-size:.875rem;font-weight:500;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);transition:all var(--transition-fast);max-width:200px}.diagram-name-input:hover{background:var(--bg-hover)}.diagram-name-input:focus{outline:none;background:var(--bg-tertiary);box-shadow:0 0 0 2px var(--accent-primary)}.save-status{display:flex;align-items:center;gap:var(--spacing-xs);font-size:.75rem;color:var(--text-tertiary)}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--success)}.save-status.saving .status-dot{background:var(--warning);animation:pulse 1s infinite}.save-status.error .status-dot{background:var(--error)}.btn-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:none;border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-icon svg{width:18px;height:18px}.btn-small{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.75rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-small:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-secondary)}.btn-small svg{width:14px;height:14px}.btn-action{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-action:hover{background:var(--bg-hover);border-color:var(--border-secondary)}.btn-action svg{width:16px;height:16px}.btn-primary{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);background:var(--accent-gradient);border:none;border-radius:var(--radius-md);color:#fff;font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-primary:active{transform:translateY(0)}.btn-primary svg{width:16px;height:16px}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover{background:#dc2626}.theme-toggle .icon-sun,.theme-toggle .icon-moon{transition:all var(--transition-fast)}.theme-toggle .icon-moon.hidden,.theme-toggle .icon-sun.hidden,[data-theme=light] .theme-toggle .icon-sun{display:none}[data-theme=light] .theme-toggle .icon-moon{display:block}.main-content{display:flex;flex:1;overflow:hidden}.panel{display:flex;flex-direction:column;background:var(--bg-secondary);overflow:hidden}.editor-panel{flex:1;min-width:300px;border-right:1px solid var(--border-primary)}.preview-panel{flex:1;min-width:300px}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border-bottom:1px solid var(--border-primary);height:44px;flex-shrink:0}.panel-title{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.875rem;font-weight:600;color:var(--text-primary)}.panel-title svg{width:16px;height:16px;color:var(--accent-primary)}.panel-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.editor-container{display:flex;flex:1;overflow:hidden}.line-numbers{display:flex;flex-direction:column;padding:var(--spacing-md) var(--spacing-sm);background:var(--bg-primary);color:var(--text-muted);font-family:var(--font-mono);font-size:.875rem;line-height:1.5;text-align:right;-webkit-user-select:none;user-select:none;min-width:40px;border-right:1px solid var(--border-primary);overflow:hidden}.line-number{padding-right:var(--spacing-xs)}.editor-textarea{flex:1;padding:var(--spacing-md);background:var(--bg-primary);border:none;color:var(--text-primary);font-family:var(--font-mono);font-size:.875rem;line-height:1.5;resize:none;outline:none;overflow:auto}.editor-textarea::placeholder{color:var(--text-muted)}.editor-footer{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border-top:1px solid var(--border-primary);flex-shrink:0}.editor-stats{display:flex;gap:var(--spacing-md);font-size:.75rem;color:var(--text-tertiary)}.file-actions{display:flex;gap:var(--spacing-sm)}.resize-handle{width:6px;background:var(--bg-primary);cursor:col-resize;display:flex;align-items:center;justify-content:center;transition:background var(--transition-fast)}.resize-handle:hover{background:var(--accent-primary)}.resize-line{width:2px;height:40px;background:var(--border-secondary);border-radius:var(--radius-full)}.resize-handle:hover .resize-line{background:#fff}.preview-container{flex:1;overflow:auto;background:var(--bg-primary)}.preview-content{min-height:100%;display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg);transition:transform var(--transition-fast)}.preview-placeholder{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);color:var(--text-tertiary);text-align:center}.preview-placeholder svg{width:64px;height:64px;opacity:.5}.preview-placeholder p{font-size:1rem;color:var(--text-secondary)}.preview-placeholder span{font-size:.875rem}.preview-placeholder.hidden{display:none}.preview-diagram{max-width:100%}.preview-diagram svg{max-width:100%;height:auto}.preview-error{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:#ef44441a;border:1px solid var(--error);border-radius:var(--radius-md);color:var(--error);font-size:.875rem;margin:var(--spacing-md)}.preview-error svg{width:18px;height:18px;flex-shrink:0}.preview-error.hidden{display:none}.zoom-level{font-size:.75rem;color:var(--text-tertiary);min-width:40px;text-align:center}.select-small{padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.75rem;cursor:pointer;outline:none}.select-small:focus{border-color:var(--accent-primary)}.export-bar{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-secondary);border-top:1px solid var(--border-primary);flex-shrink:0;gap:var(--spacing-lg);flex-wrap:wrap}.export-options{display:flex;align-items:center;gap:var(--spacing-xl);flex-wrap:wrap}.export-group{display:flex;align-items:center;gap:var(--spacing-sm)}.export-label{font-size:.75rem;color:var(--text-tertiary);font-weight:500;white-space:nowrap}.export-buttons{display:flex;gap:var(--spacing-xs)}.btn-export{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.75rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-export:hover,.btn-export.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.btn-export svg{width:14px;height:14px}.scale-buttons{display:flex}.btn-scale{padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);color:var(--text-secondary);font-size:.75rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-scale:first-child{border-radius:var(--radius-sm) 0 0 var(--radius-sm)}.btn-scale:last-child{border-radius:0 var(--radius-sm) var(--radius-sm) 0}.btn-scale:not(:last-child){border-right:none}.btn-scale:hover,.btn-scale.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.quality-slider{width:100px;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-tertiary);border-radius:var(--radius-full);outline:none}.quality-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;background:var(--accent-primary);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast)}.quality-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.quality-value{font-size:.75rem;color:var(--text-tertiary);min-width:32px}.background-options{display:flex;align-items:center;gap:var(--spacing-sm)}.color-picker{width:28px;height:28px;padding:0;border:2px solid var(--border-primary);border-radius:var(--radius-sm);cursor:pointer;overflow:hidden}.color-picker::-webkit-color-swatch-wrapper{padding:0}.color-picker::-webkit-color-swatch{border:none}.checkbox-label{display:flex;align-items:center;gap:var(--spacing-xs);font-size:.75rem;color:var(--text-secondary);cursor:pointer}.checkbox-label input[type=checkbox]{display:none}.checkmark{width:16px;height:16px;border:1px solid var(--border-secondary);border-radius:var(--radius-xs);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.checkbox-label input:checked+.checkmark{background:var(--accent-primary);border-color:var(--accent-primary)}.checkbox-label input:checked+.checkmark:after{content:"✓";color:#fff;font-size:10px}.export-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.modal{position:fixed;top:0;left:0;right:0;bottom:0;z-index:var(--z-modal);display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg)}.modal.hidden{display:none}.modal-backdrop{position:absolute;top:0;left:0;right:0;bottom:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{position:relative;background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-xl);width:100%;max-width:500px;max-height:80vh;overflow:hidden;box-shadow:var(--shadow-xl);animation:slideUp .3s ease}.modal-large{max-width:800px}.modal-auth{max-width:900px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--border-primary)}.modal-header h3{font-size:1.125rem;font-weight:600}.btn-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:none;border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.btn-close:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-close svg{width:18px;height:18px}.modal-body{padding:var(--spacing-lg);overflow-y:auto;max-height:calc(80vh - 70px)}.template-categories{display:flex;gap:var(--spacing-xs);margin-bottom:var(--spacing-lg);flex-wrap:wrap}.category-btn{padding:var(--spacing-xs) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-full);color:var(--text-secondary);font-size:.75rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.category-btn:hover,.category-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.template-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-md)}.template-card{background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-lg);padding:var(--spacing-md);cursor:pointer;transition:all var(--transition-fast)}.template-card:hover{border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.template-preview{height:100px;background:var(--bg-primary);border-radius:var(--radius-md);margin-bottom:var(--spacing-sm);display:flex;align-items:center;justify-content:center;overflow:hidden}.template-preview svg{max-width:100%;max-height:100%}.template-name{font-size:.875rem;font-weight:500;color:var(--text-primary)}.template-description{font-size:.75rem;color:var(--text-tertiary);margin-top:var(--spacing-xs)}.history-actions{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.search-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;outline:none}.search-input:focus{border-color:var(--accent-primary)}.history-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.history-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.history-item:hover{border-color:var(--accent-primary)}.history-preview{width:60px;height:40px;background:var(--bg-primary);border-radius:var(--radius-sm);overflow:hidden;display:flex;align-items:center;justify-content:center}.history-info{flex:1}.history-name{font-size:.875rem;font-weight:500;color:var(--text-primary)}.history-date{font-size:.75rem;color:var(--text-tertiary)}.history-actions-buttons{display:flex;gap:var(--spacing-xs)}.settings-group{margin-bottom:var(--spacing-lg)}.settings-group h4{font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-xs);border-bottom:1px solid var(--border-primary)}.setting-item{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-sm);font-size:.875rem;color:var(--text-secondary)}.setting-item.checkbox{justify-content:flex-start;gap:var(--spacing-sm);cursor:pointer}.setting-item input[type=number],.setting-item select{padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.875rem;width:100px}.data-actions{display:flex;gap:var(--spacing-sm)}.share-url-container{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.share-url-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;font-family:var(--font-mono)}.qr-container{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md)}#qr-code{padding:var(--spacing-md);background:#fff;border-radius:var(--radius-md)}.qr-hint{font-size:.875rem;color:var(--text-tertiary)}.shortcuts-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.shortcut-item{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm);background:var(--bg-tertiary);border-radius:var(--radius-md)}.shortcut-keys{display:flex;gap:var(--spacing-xs)}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:24px;padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-primary);border:1px solid var(--border-secondary);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:.75rem;color:var(--text-primary)}.shortcut-action{font-size:.875rem;color:var(--text-secondary)}.toast-container{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:var(--z-toast)}.toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:slideIn .3s ease}.toast.success{border-left:3px solid var(--success)}.toast.error{border-left:3px solid var(--error)}.toast.warning{border-left:3px solid var(--warning)}.toast.info{border-left:3px solid var(--info)}.toast-icon{width:20px;height:20px}.toast-message{font-size:.875rem;color:var(--text-primary)}.drop-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#6366f11a;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);border:3px dashed var(--accent-primary)}.drop-overlay.hidden{display:none}.drop-content{text-align:center;color:var(--accent-primary)}.drop-content svg{width:64px;height:64px;margin-bottom:var(--spacing-md)}.drop-content p{font-size:1.25rem;font-weight:600;margin-bottom:var(--spacing-xs)}.drop-content span{font-size:.875rem;color:var(--text-secondary)}.support-banner{position:fixed;bottom:var(--spacing-lg);left:50%;transform:translate(-50%);display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-elevated);border:1px solid 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slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (max-width: 768px){.header{padding:var(--spacing-sm)}.header-center{display:none}.main-content{flex-direction:column}.editor-panel,.preview-panel{flex:none;height:50%;min-width:100%}.resize-handle{width:100%;height:6px;cursor:row-resize}.resize-line{width:40px;height:2px}.export-bar{padding:var(--spacing-sm);flex-direction:column;gap:var(--spacing-sm)}.export-options{width:100%;justify-content:center;gap:var(--spacing-md)}.export-actions{width:100%;justify-content:center}.quality-group{display:none}.modal-content{max-width:95%;max-height:90vh}.template-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.support-banner{flex-direction:column;left:var(--spacing-md);right:var(--spacing-md);transform:none;border-radius:var(--radius-lg)}}@media print{.header,.editor-panel,.resize-handle,.export-bar,.modal,.toast-container,.support-banner{display:none!important}.preview-panel{width:100%;height:auto}.preview-content{padding:0}}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.modal-image-container{max-width:100%;max-height:70vh;overflow:auto;margin:var(--spacing-md) 0;border:1px solid var(--border-primary);border-radius:var(--radius-sm);background:var(--bg-tertiary);display:flex;justify-content:center;align-items:flex-start}.preview-image{max-width:none;display:block}#image-preview-modal .modal-content{max-width:90vw;width:auto}.app-footer{background:var(--bg-secondary);border-top:1px solid var(--border-primary);padding:var(--spacing-md) var(--spacing-lg);margin-top:auto}.footer-content{display:flex;justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto;font-size:.875rem;color:var(--text-tertiary)}.footer-links{display:flex;gap:var(--spacing-lg)}.footer-links a{color:var(--text-secondary);text-decoration:none;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--accent-primary)}@media (max-width: 640px){.footer-content{flex-direction:column;gap:var(--spacing-sm);text-align:center}}.btn-pro{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-md);background:var(--accent-gradient);color:#fff;border:none;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.btn-pro:hover{transform:translateY(-1px);box-shadow:0 4px 12px #6366f166}.btn-pro svg{width:16px;height:16px}.modal-auth{max-width:400px}.auth-form{display:flex;flex-direction:column;gap:var(--spacing-md)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.form-group label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.form-input{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;transition:border-color var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--accent-primary)}.form-input::placeholder{color:var(--text-muted)}.form-error{padding:var(--spacing-sm);background:#ef44441a;border:1px solid var(--error);border-radius:var(--radius-sm);color:var(--error);font-size:.875rem}.btn-full{width:100%;justify-content:center}.auth-divider{display:flex;align-items:center;gap:var(--spacing-md);margin:var(--spacing-md) 0;color:var(--text-muted);font-size:.875rem}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border-primary)}.auth-social{display:flex;gap:var(--spacing-sm)}.btn-social{flex:1;display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}.btn-social:hover{background:var(--bg-hover);border-color:var(--border-secondary)}.auth-switch{display:flex;justify-content:center;gap:var(--spacing-xs);margin-top:var(--spacing-md);font-size:.875rem;color:var(--text-secondary)}.btn-link{background:none;border:none;color:var(--accent-primary);font-size:inherit;cursor:pointer;text-decoration:underline}.btn-link:hover{color:var(--accent-secondary)}.auth-logged-in{display:flex;flex-direction:column;gap:var(--spacing-lg)}.user-info{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md)}.user-avatar{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--accent-gradient);border-radius:var(--radius-full);color:#fff}.user-avatar svg{width:24px;height:24px}.user-details{display:flex;flex-direction:column;gap:2px}.user-email{font-weight:500;color:var(--text-primary)}.user-plan{font-size:.875rem;color:var(--text-tertiary)}.user-plan.pro{color:var(--accent-primary);font-weight:500}.user-actions{display:flex;flex-direction:column;gap:var(--spacing-sm)}.user-buttons{display:flex;gap:var(--spacing-sm)}.btn-secondary{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:background var(--transition-fast)}.btn-secondary:hover{background:var(--bg-hover)}.btn-danger{padding:var(--spacing-sm) var(--spacing-md);background:#ef44441a;border:1px solid var(--error);border-radius:var(--radius-md);color:var(--error);font-size:.875rem;cursor:pointer;transition:background var(--transition-fast)}.btn-danger:hover{background:#ef444433}.btn-magic{border:1px solid transparent;background-image:linear-gradient(var(--bg-tertiary),var(--bg-tertiary)),var(--accent-gradient);background-origin:border-box;background-clip:content-box,border-box;color:var(--text-primary);font-weight:600}.btn-magic:hover{transform:translateY(-1px);box-shadow:0 0 15px #a855f766}.btn-magic svg{color:#a855f7}.ai-textarea{width:100%;resize:vertical;min-height:120px;font-family:var(--font-sans)}.ai-status{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);margin-top:var(--spacing-md);color:var(--text-secondary);font-size:.875rem}.ai-status .loading-spinner.small{width:20px;height:20px;border-width:2px}