:root {
--primary-50: #eff6ff;
--primary-100: #dbeafe;
--primary-200: #bfdbfe;
--primary-300: #93c5fd;
--primary-400: #60a5fa;
--primary-500: #3b82f6;
--primary-600: #2563eb;
--primary-700: #1d4ed8;
--primary-800: #1e40af;
--primary-900: #1e3a8a;
--success-50: #ecfdf5;
--success-100: #d1fae5;
--success-300: #6ee7b7;
--success-400: #34d399;
--success-500: #10b981;
--success-600: #059669;
--warning-50: #fffbeb;
--warning-100: #fef3c7;
--warning-300: #fcd34d;
--warning-400: #fbbf24;
--warning-500: #f59e0b;
--warning-600: #d97706;
--danger-50: #fef2f2;
--danger-100: #fee2e2;
--danger-300: #fca5a5;
--danger-400: #f87171;
--danger-500: #ef4444;
--danger-600: #dc2626;
--info-100: #e0e7ff;
--info-400: #818cf8;
--info-500: #6366f1;
--info-600: #4f46e5;
--gray-0: #ffffff;
--gray-50: #f9fafb;
--gray-100: #f3f4f6;
--gray-200: #e5e7eb;
--gray-300: #d1d5db;
--gray-400: #9ca3af;
--gray-500: #6b7280;
--gray-600: #4b5563;
--gray-700: #374151;
--gray-800: #1f2937;
--gray-900: #111827;
--bg-app: #fafbfc;
--bg-primary: #ffffff;
--bg-secondary: #f5f6f8;
--bg-tertiary: #f3f4f6;
--bg-hover: #f1f5f9;
--bg-active: #e2e8f0;
--bg-overlay: rgba(255, 255, 255, 0.96);
--text-primary: #1f2937;
--text-secondary: #4b5563;
--text-tertiary: #6b7280;
--text-inverse: #ffffff;
--text-accent: #2563eb;
--text-disabled: #9ca3af;
--primary: #2563eb;
--primary-hover: #1d4ed8;
--primary-selected: #dbeafe;
--success: #10b981;
--warning: #f59e0b;
--danger: #ef4444;
--info: #6366f1;
--color-error: var(--danger);
--color-warning: var(--warning);
--color-text-muted: var(--text-tertiary);
--border-light: #e5e7eb;
--border-medium: #d1d5db;
--border-strong: #9ca3af;
--border-accent: #3b82f6;
--border-controls: rgba(0, 0, 0, 0.35);
--focus-ring: #3b82f6;
--control-bg: #f8f9fa;
--control-bg-hover: #f3f4f6;
--control-bg-active: #e5e7eb;
--control-border: #d1d5db;
--control-border-hover: #b0b7c0;
--control-text: #1f2937;
--panel-bg: #ffffff;
--panel-border: #e5e7eb;
--panel-header-bg: #f8f9fa;
--overlay-hover: rgba(15, 23, 42, 0.06);
--overlay-selected: rgba(37, 99, 235, 0.14);
--overlay-focus: rgba(59, 130, 246, 0.15);
--font-family-base: 'Segoe UI', sans-serif;
--font-size-xs: clamp(0.625rem, 0.5625rem + 0.15vw, 0.6875rem);
--font-size-sm: clamp(0.6875rem, 0.625rem + 0.15vw, 0.75rem);
--font-size-base: clamp(0.8125rem, 0.75rem + 0.15vw, 0.875rem);
--font-size-md: 0.9375rem;
--font-size-lg: clamp(1.0625rem, 1rem + 0.15vw, 1.125rem);
--font-size-xl: clamp(1.1875rem, 1.125rem + 0.2vw, 1.3125rem);
--font-weight-normal: 400;
--font-weight-medium: 500;
--font-weight-semibold: 600;
--font-weight-bold: 700;
--line-height-tight: 1.25;
--line-height-normal: 1.5;
--line-height-relaxed: 1.75;
--letter-spacing-tight: -0.025em;
--letter-spacing-normal: 0;
--letter-spacing-wide: 0.025em;
--letter-spacing-wider: 0.5px;
--space-1: 0.25rem;
--space-2: 0.5rem;
--space-3: 0.75rem;
--space-4: 1rem;
--space-5: 1.25rem;
--space-6: 1.5rem;
--space-8: 2rem;
--space-10: 2.5rem;
--space-12: 3rem;
--titlebar-height: 2.5rem;
--toolbar-height: 3.5rem;
--statusbar-height: 1.625rem;
--content-max-width: 54rem;
--radius-sm: 0.125rem;
--radius-base: 0.25rem;
--radius-md: 0.375rem;
--radius-lg: 0.5rem;
--radius-xl: 0.75rem;
--radius-2xl: 1rem;
--radius-full: 9999px;
--shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
--shadow-base: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
--shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
--shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
--shadow-card: var(--shadow-md);
--shadow-primary: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
--duration-fast: 100ms;
--duration-normal: 150ms;
--duration-medium: 200ms;
--duration-slow: 250ms;
--easing-ease: ease;
--easing-ease-out: ease-out;
--easing-ease-in-out: ease-in-out;
--z-base: 0;
--z-titlebar: 100;
--z-dropdown: 150;
--z-modal: 1000;
--z-tooltip: 1700;
}
[data-theme="dark"] {
--bg-app: #1a1a1a;
--bg-primary: #1e1e1e;
--bg-secondary: #1a1a1a;
--bg-tertiary: #363636;
--bg-overlay: rgba(28, 28, 28, 0.95);
--bg-hover: #414141;
--bg-active: #505050;
--text-primary: #f0f0f0;
--text-secondary: #c8c8c8;
--text-tertiary: #909090;
--text-inverse: #121212;
--text-accent: #60a5fa;
--text-disabled: #6a6a6a;
--primary: #3b82f6;
--primary-hover: #60a5fa;
--primary-selected: rgba(96, 165, 250, 0.2);
--color-error: var(--danger);
--color-warning: var(--warning);
--color-text-muted: var(--text-tertiary);
--border-light: #3e3e3e;
--border-medium: #505050;
--border-strong: #686868;
--border-accent: #60a5fa;
--border-controls: rgba(255, 255, 255, 0.35);
--control-bg: #2c2c2c;
--control-bg-hover: #363636;
--control-bg-active: #404040;
--control-border: #3e3e3e;
--control-border-hover: #505050;
--control-text: #f0f0f0;
--panel-bg: #2c2c2c;
--panel-border: #3e3e3e;
--panel-header-bg: #252525;
--overlay-hover: rgba(255, 255, 255, 0.08);
--overlay-selected: rgba(96, 165, 250, 0.2);
--overlay-focus: rgba(96, 165, 250, 0.20);
--shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.4);
--shadow-base: 0 1px 3px 0 rgba(0,0,0,0.5), 0 1px 2px 0 rgba(0,0,0,0.4);
--shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5), 0 2px 4px -1px rgba(0,0,0,0.4);
--shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.6), 0 4px 6px -2px rgba(0,0,0,0.4);
}