/* ============================================
   Design Tokens - BG Dashboard
   Centralized design system variables
   ============================================ */

:root {
    /* ========== Colors - Primary (Amber - Brand/Action) ========== */
    --color-primary-50: #fffbeb;
    --color-primary-100: #fef3c7;
    --color-primary-200: #fde68a;
    --color-primary-300: #fcd34d;
    --color-primary-400: #fbbf24;
    --color-primary-500: #f59e0b;
    --color-primary-600: #d97706;
    --color-primary-700: #b45309;
    --color-primary-800: #92400e;
    --color-primary-900: #78350f;

    /* ========== Colors - Secondary (Teal - Theme/Background) ========== */
    --color-secondary-50: #f0fdfa;
    --color-secondary-100: #ccfbf1;
    --color-secondary-200: #99f6e4;
    --color-secondary-300: #5eead4;
    --color-secondary-400: #2dd4bf;
    --color-secondary-500: #14b8a6;
    --color-secondary-600: #0d9488;
    --color-secondary-700: #0f766e;
    --color-secondary-800: #115e59;
    --color-secondary-900: #134e4a;

    /* ========== Colors - Semantic ========== */
    --color-success-light: #c6f6d5;
    --color-success: #48bb78;
    --color-success-dark: #38a169;

    --color-error-light: #fed7d7;
    --color-error: #e53e3e;
    --color-error-dark: #c53030;

    --color-warning-light: #feebc8;
    --color-warning: #ed8936;
    --color-warning-dark: #dd6b20;

    --color-info-light: #bee3f8;
    --color-info: #4299e1;
    --color-info-dark: #3182ce;

    /* ========== Colors - Neutral (Light Mode) ========== */
    --color-neutral-50: #f7fafc;
    --color-neutral-100: #edf2f7;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e0;
    --color-neutral-400: #a0aec0;
    --color-neutral-500: #718096;
    --color-neutral-600: #4a5568;
    --color-neutral-700: #2d3748;
    --color-neutral-800: #1a202c;
    --color-neutral-900: #171923;

    /* ========== Semantic Color Mappings (Light Mode) ========== */
    --bg-gradient-start: var(--color-secondary-700);
    --bg-gradient-end: var(--color-secondary-900);
    --card-bg: #ffffff;
    --text-primary: var(--color-neutral-900);
    --text-secondary: var(--color-neutral-700);
    --text-muted: #5a6c7d;
    --border-color: var(--color-neutral-200);
    --hover-bg: var(--color-neutral-50);
    --primary-color: var(--color-primary-500);
    --primary-dark: var(--color-primary-600);
    --success-color: var(--color-success);
    --error-color: var(--color-error);
    --warning-color: var(--color-warning);
    --sidebar-bg: var(--color-secondary-900);
    --sidebar-hover: var(--color-secondary-800);
    --text-light: #ffffff;
    --secondary-color: var(--color-secondary-500);

    /* ========== Spacing Scale ========== */
    --space-0: 0;
    --space-1: 0.25rem;
    /* 4px */
    --space-2: 0.5rem;
    /* 8px */
    --space-3: 0.75rem;
    /* 12px */
    --space-4: 1rem;
    /* 16px */
    --space-5: 1.25rem;
    /* 20px */
    --space-6: 1.5rem;
    /* 24px */
    --space-7: 1.75rem;
    /* 28px */
    --space-8: 2rem;
    /* 32px */
    --space-10: 2.5rem;
    /* 40px */
    --space-12: 3rem;
    /* 48px */
    --space-16: 4rem;
    /* 64px */
    --space-20: 5rem;
    /* 80px */

    /* ========== Typography Scale ========== */
    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 1.875rem;
    /* 30px */
    --font-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */

    /* ========== Font Weights ========== */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* ========== Line Heights ========== */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* ========== Border Radius ========== */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-2xl: 1.5rem;
    /* 24px */
    --radius-full: 9999px;

    /* ========== Shadows ========== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);

    /* ========== Transitions ========== */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-all: all var(--transition-base);

    /* ========== Z-Index Scale ========== */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;

    /* ========== Breakpoints (for reference in JS) ========== */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
}

/* ========== Dark Mode ========== */
body.dark-mode {
    --bg-gradient-start: #1a202c;
    --bg-gradient-end: var(--color-neutral-700);
    --card-bg: var(--color-neutral-700);
    --text-primary: var(--color-neutral-200);
    --text-secondary: var(--color-neutral-300);
    --text-muted: #b0bec5;
    --border-color: var(--color-neutral-600);
    --hover-bg: #374151;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.5);
}