/**
 * ==========================================================================
 * DESIGN TOKENS — Single Source of Truth
 * UGC Creator Analytics Platform
 * "Carbon" Design System
 * ==========================================================================
 *
 * Dark-first analytics dashboard with teal accent.
 * Typography: Bricolage Grotesque (headings), Outfit (body), JetBrains Mono (data).
 *
 * Organization:
 * 1. Color Palette (Dark default + Light override)
 * 2. Typography
 * 3. Spacing
 * 4. Borders & Shadows
 * 5. Component-Specific Tokens
 * 6. Animation & Transitions
 * 7. Platform & Semantic Colors
 */

/* ==========================================================================
   1. COLOR PALETTE — Dark Theme (Default)
   ========================================================================== */
:root {
    /* Primary Accent — Teal */
    --color-primary: #14B8A6;
    --color-primary-hover: #0DD3BD;
    --color-primary-light: #2DD4BF;
    --color-primary-dark: #0D9488;
    --color-primary-muted: rgba(20, 184, 166, 0.15);

    --color-secondary: #8B5CF6;
    --color-secondary-hover: #7C3AED;
    --color-secondary-light: #A78BFA;

    /* Accent Colors */
    --color-accent-yellow: #FBBF24;
    --color-accent-cyan: #22D3EE;
    --color-accent-lime: #A3E635;
    --color-accent-purple: #A78BFA;

    /* Semantic Colors — Status */
    --color-success: #34D399;
    --color-success-hover: #10B981;
    --color-success-light: rgba(52, 211, 153, 0.15);

    --color-warning: #FBBF24;
    --color-warning-hover: #F59E0B;
    --color-warning-light: rgba(251, 191, 36, 0.15);

    --color-danger: #FB7185;
    --color-danger-hover: #F43F5E;
    --color-danger-light: rgba(251, 113, 133, 0.12);

    --color-info: #60A5FA;
    --color-info-hover: #3B82F6;
    --color-info-light: rgba(96, 165, 250, 0.12);

    /* Backgrounds — Dark */
    --bg-primary: #0B0F1A;
    --bg-secondary: #111827;
    --bg-tertiary: #1F2937;
    --bg-navbar: #0F1629;
    --bg-footer: #0F1629;
    --bg-card: #111827;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    /* Text Colors */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-tertiary: #64748B;
    --text-muted: #475569;
    --text-inverse: #0F172A;

    /* Border Colors */
    --border-primary: #1E293B;
    --border-secondary: #334155;
    --border-light: #1E293B;
    --border-focus: #14B8A6;

    /* Shadow Definitions */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 8px 24px rgba(20, 184, 166, 0.1);
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.3);

    /* Input & Form */
    --input-bg: #1F2937;
    --input-border: #334155;
    --input-focus-shadow: 0 0 0 3px rgba(20, 184, 166, 0.2);
    --input-placeholder: #64748B;
    --input-error-bg: rgba(251, 113, 133, 0.1);

    /* Table */
    --table-bg: #111827;
    --table-header-bg: #1F2937;
    --table-row-hover: rgba(20, 184, 166, 0.05);
    --table-row-alt: rgba(255, 255, 255, 0.02);
    --table-border: #1E293B;

    /* Badge Colors */
    --badge-success-bg: rgba(52, 211, 153, 0.15);
    --badge-success-text: #34D399;
    --badge-warning-bg: rgba(251, 191, 36, 0.15);
    --badge-warning-text: #FBBF24;
    --badge-danger-bg: rgba(251, 113, 133, 0.15);
    --badge-danger-text: #FB7185;
    --badge-info-bg: rgba(20, 184, 166, 0.12);
    --badge-info-text: #14B8A6;
}

/* ==========================================================================
   1b. COLOR PALETTE — Light Theme Override
   ========================================================================== */
[data-theme="light"] {
    /* Primary Accent — Teal (darker for contrast) */
    --color-primary: #0D9488;
    --color-primary-hover: #0F766E;
    --color-primary-light: #14B8A6;
    --color-primary-dark: #115E59;
    --color-primary-muted: rgba(13, 148, 136, 0.1);

    --color-secondary: #7C3AED;
    --color-secondary-hover: #6D28D9;
    --color-secondary-light: #8B5CF6;

    /* Status Colors */
    --color-success: #10B981;
    --color-success-hover: #059669;
    --color-success-light: rgba(16, 185, 129, 0.1);

    --color-warning: #F59E0B;
    --color-warning-hover: #D97706;
    --color-warning-light: rgba(245, 158, 11, 0.1);

    --color-danger: #F43F5E;
    --color-danger-hover: #E11D48;
    --color-danger-light: rgba(244, 63, 94, 0.08);

    --color-info: #3B82F6;
    --color-info-hover: #2563EB;
    --color-info-light: rgba(59, 130, 246, 0.08);

    /* Backgrounds — Light */
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --bg-tertiary: #E2E8F0;
    --bg-navbar: #FFFFFF;
    --bg-footer: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(15, 23, 42, 0.5);

    /* Text Colors */
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-tertiary: #94A3B8;
    --text-muted: #CBD5E1;
    --text-inverse: #F8FAFC;

    /* Border Colors */
    --border-primary: #E2E8F0;
    --border-secondary: #CBD5E1;
    --border-light: #F1F5F9;
    --border-focus: #0D9488;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 12px rgba(13, 148, 136, 0.08);
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.05);

    /* Input & Form */
    --input-bg: #FFFFFF;
    --input-border: #CBD5E1;
    --input-focus-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
    --input-placeholder: #94A3B8;
    --input-error-bg: rgba(244, 63, 94, 0.05);

    /* Table */
    --table-bg: #FFFFFF;
    --table-header-bg: #F8FAFC;
    --table-row-hover: rgba(13, 148, 136, 0.04);
    --table-row-alt: #FAFBFC;
    --table-border: #E2E8F0;

    /* Badge Colors */
    --badge-success-bg: rgba(16, 185, 129, 0.1);
    --badge-success-text: #059669;
    --badge-warning-bg: rgba(245, 158, 11, 0.1);
    --badge-warning-text: #D97706;
    --badge-danger-bg: rgba(244, 63, 94, 0.08);
    --badge-danger-text: #E11D48;
    --badge-info-bg: rgba(13, 148, 136, 0.08);
    --badge-info-text: #0D9488;
}

/* ==========================================================================
   2. TYPOGRAPHY SCALE
   ========================================================================== */
:root {
    /* Font Families */
    --font-heading: 'Bricolage Grotesque', 'Epilogue', sans-serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Monaco', 'Consolas', monospace;

    /* Font Sizes — Compact data-dense scale */
    --text-xs: 0.6875rem;     /* 11px */
    --text-sm: 0.8125rem;     /* 13px */
    --text-base: 0.875rem;    /* 14px */
    --text-lg: 1rem;          /* 16px */
    --text-xl: 1.125rem;      /* 18px */
    --text-2xl: 1.25rem;      /* 20px */
    --text-3xl: 1.5rem;       /* 24px */
    --text-4xl: 1.75rem;      /* 28px */
    --text-5xl: 2rem;         /* 32px */
    --text-6xl: 2.5rem;       /* 40px */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.2;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* Letter Spacing */
    --tracking-tighter: -0.04em;
    --tracking-tight: -0.02em;
    --tracking-normal: 0;
    --tracking-wide: 0.02em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;
}

/* ==========================================================================
   3. SPACING SCALE (8px base grid)
   ========================================================================== */
:root {
    --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-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1200px;
    --container-2xl: 1400px;
}

/* ==========================================================================
   4. BORDERS & RADII
   ========================================================================== */
:root {
    --border-0: 0;
    --border-1: 1px;
    --border-2: 2px;
    --border-3: 3px;
    --border-4: 4px;

    /* Border Radii */
    --radius-none: 0;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 9999px;
}

/* ==========================================================================
   5. COMPONENT-SPECIFIC TOKENS
   ========================================================================== */
:root {
    /* Button Sizes */
    --btn-padding-sm: 0.375rem 0.75rem;
    --btn-padding-md: 0.5rem 1rem;
    --btn-padding-lg: 0.75rem 1.5rem;
    --btn-font-size-sm: var(--text-sm);
    --btn-font-size-md: var(--text-base);
    --btn-font-size-lg: var(--text-lg);

    /* Card */
    --card-padding: 1.25rem;
    --card-border-width: 1px;

    /* Modal */
    --modal-max-width: 600px;
    --modal-padding: 1.5rem;

    /* Toast */
    --toast-max-width: 420px;
    --toast-min-width: 320px;

    /* Touch Target Minimum (WCAG 2.5.5) */
    --touch-target-min: 44px;

    /* Form Control Heights */
    --input-height-sm: 32px;
    --input-height-md: 40px;
    --input-height-lg: 48px;
}

/* ==========================================================================
   6. ANIMATION & TRANSITIONS
   ========================================================================== */
:root {
    --duration-fast: 150ms;
    --duration-normal: 200ms;
    --duration-slow: 300ms;
    --duration-slower: 500ms;

    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================================================
   7. PLATFORM COLORS
   ========================================================================== */
:root {
    --color-tiktok: #FE2C55;
    --color-tiktok-bg: rgba(254, 44, 85, 0.12);
    --color-instagram: #E4405F;
    --color-instagram-bg: rgba(228, 64, 95, 0.12);
    --color-youtube: #FF0000;
    --color-youtube-bg: rgba(255, 0, 0, 0.12);
}

/* ==========================================================================
   LEGACY VARIABLE ALIASES
   Map old variable names so nothing breaks during migration.
   ========================================================================== */
:root {
    --primary-color: var(--color-primary);
    --primary-hover: var(--color-primary-hover);
    --primary-light: var(--color-primary-light);
    --secondary-color: var(--color-secondary);
    --secondary-hover: var(--color-secondary-hover);

    --success-color: var(--color-success);
    --success-hover: var(--color-success-hover);
    --warning-color: var(--color-warning);
    --warning-hover: var(--color-warning-hover);
    --danger-color: var(--color-danger);
    --danger-hover: var(--color-danger-hover);

    --accent-yellow: var(--color-accent-yellow);
    --accent-cyan: var(--color-accent-cyan);
    --accent-lime: var(--color-accent-lime);
    --accent-purple: var(--color-accent-purple);

    --card-bg: var(--bg-card);
    --card-shadow: var(--shadow-md);
    --card-shadow-hover: var(--shadow-hover);
    --card-shadow-subtle: var(--shadow-sm);
    --modal-overlay: var(--bg-overlay);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Reference)
   --breakpoint-sm:  640px    Phones
   --breakpoint-md:  768px    Tablets
   --breakpoint-lg:  1024px   Laptops
   --breakpoint-xl:  1200px   Desktops
   --breakpoint-2xl: 1400px   Wide
   ========================================================================== */

/* ==========================================================================
   HIGH CONTRAST MODE SUPPORT
   ========================================================================== */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #FFFFFF;
        --border-focus: #FFFF00;
        --color-success: #00FF88;
        --color-danger: #FF4444;
        --color-warning: #FFAA00;
    }

    [data-theme="light"] {
        --border-primary: #000000;
        --border-focus: #0000FF;
        --color-success: #008800;
        --color-danger: #CC0000;
        --color-warning: #CC6600;
    }
}

/* ==========================================================================
   REDUCED MOTION SUPPORT
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    :root {
        --duration-fast: 0.01ms;
        --duration-normal: 0.01ms;
        --duration-slow: 0.01ms;
        --duration-slower: 0.01ms;
    }
}