body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-secondary: #64748b;--color-success: #059669;--color-warning: #d97706;--color-error: #dc2626;--color-background: #f5f5f5;--color-surface: #ffffff;--color-border: #e0e0e0;--color-text-primary: #333;--color-text-secondary: #666;--color-text-muted: #999;--color-panel-header: #f8f9fa;--color-disabled: #ccc;--color-mode-toggle-bg: #e5e7eb;--color-mode-toggle-active: #3b82f6;--color-success-bg: #d1fae5;--color-warning-bg: #fef3c7;--color-error-bg: #fee2e2;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--spacing-2xl: 32px;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-full: 50%;--transition-fast: .15s ease;--transition-normal: .3s ease;--z-modal: 1000;--z-toast: 1100;--z-tooltip: 1200}.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}.btn{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border:none;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn:disabled{background:var(--color-disabled);cursor:not-allowed;opacity:.6}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spinner{width:14px;height:14px;border:2px solid #ffffff40;border-top:2px solid #ffffff;border-radius:var(--radius-full);animation:spin 1s linear infinite}