/**
 * Design Tokens - talw.media LLC
 *
 * This file contains all design tokens for the talw.media website.
 * Tokens are organized to support our three pillars: People First, Planet Positive, Science Backed
 *
 * Usage: Import this file before styles.css
 * Documentation: See /docs/design-tokens.md
 */

:root {
  /* ============================================
     BASE TOKENS - Primitive values
     ============================================ */

  /* Colors - Base Palette */
  --color-white: #ffffff;
  --color-black: #000000;

  /* Gray Scale - Neutral foundation */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  /* Brand Colors - Primary (Science/Trust) */
  --color-blue-50: #eff6ff;
  --color-blue-100: #dbeafe;
  --color-blue-200: #bfdbfe;
  --color-blue-300: #93c5fd;
  --color-blue-400: #60a5fa;
  --color-blue-500: #3b82f6;
  --color-blue-600: #2563eb;
  --color-blue-700: #1d4ed8;
  --color-blue-800: #1e40af;
  --color-blue-900: #1e3a8a;

  /* People First - Warm, welcoming (Pink/Rose) */
  --color-pink-50: #fdf2f8;
  --color-pink-100: #fce7f3;
  --color-pink-200: #fbcfe8;
  --color-pink-300: #f9a8d4;
  --color-pink-400: #f472b6;
  --color-pink-500: #ec4899;
  --color-pink-600: #db2777;
  --color-pink-700: #be185d;
  --color-pink-800: #9d174d;
  --color-pink-900: #831843;

  /* Planet Positive - Natural, growth (Teal/Green) */
  --color-teal-50: #f0fdfa;
  --color-teal-100: #ccfbf1;
  --color-teal-200: #99f6e4;
  --color-teal-300: #5eead4;
  --color-teal-400: #2dd4bf;
  --color-teal-500: #14b8a6;
  --color-teal-600: #0d9488;
  --color-teal-700: #0f766e;
  --color-teal-800: #115e59;
  --color-teal-900: #134e4a;

  /* Accent - Energy, action (Amber/Orange) */
  --color-amber-50: #fffbeb;
  --color-amber-100: #fef3c7;
  --color-amber-200: #fde68a;
  --color-amber-300: #fcd34d;
  --color-amber-400: #fbbf24;
  --color-amber-500: #f59e0b;
  --color-amber-600: #d97706;
  --color-amber-700: #b45309;
  --color-amber-800: #92400e;
  --color-amber-900: #78350f;

  /* Semantic State Colors */
  --color-success-light: #10b981;
  --color-success-dark: #059669;
  --color-warning-light: #f59e0b;
  --color-warning-dark: #d97706;
  --color-error-light: #ef4444;
  --color-error-dark: #dc2626;
  --color-info-light: #3b82f6;
  --color-info-dark: #2563eb;

  /* ============================================
     SEMANTIC TOKENS - Contextual applications
     ============================================ */

  /* Primary Brand Color (Science Backed - Trust, Authority) */
  --color-primary: var(--color-blue-600);
  --color-primary-hover: var(--color-blue-700);
  --color-primary-light: var(--color-blue-500);
  --color-primary-dark: var(--color-blue-800);
  --color-primary-subtle: var(--color-blue-100);

  /* Secondary Brand Color (Depth, Foundation) */
  --color-secondary: #0f172a;
  --color-secondary-hover: #1e293b;
  --color-secondary-light: #334155;
  --color-secondary-dark: #020617;

  /* Accent Color (Action, Energy) */
  --color-accent: var(--color-amber-500);
  --color-accent-hover: var(--color-amber-600);
  --color-accent-light: var(--color-amber-400);
  --color-accent-dark: var(--color-amber-700);

  /* Three Pillars - Thematic colors */
  --color-pillar-people: var(--color-pink-500);
  --color-pillar-people-subtle: var(--color-pink-100);
  --color-pillar-people-glow: rgba(236, 72, 153, 0.35);

  --color-pillar-planet: var(--color-teal-500);
  --color-pillar-planet-subtle: var(--color-teal-100);
  --color-pillar-planet-glow: rgba(20, 184, 166, 0.35);

  --color-pillar-science: var(--color-blue-600);
  --color-pillar-science-subtle: var(--color-blue-100);
  --color-pillar-science-glow: rgba(37, 99, 235, 0.42);

  /* Background Colors */
  --color-background-primary: var(--color-white);
  --color-background-secondary: var(--color-gray-50);
  --color-background-tertiary: var(--color-gray-100);
  --color-background-inverse: var(--color-gray-900);

  /* Surface Colors (Cards, Panels) */
  --color-surface-primary: var(--color-white);
  --color-surface-secondary: var(--color-gray-50);
  --color-surface-elevated: var(--color-white);
  --color-surface-overlay: rgba(0, 0, 0, 0.5);

  /* Border Colors */
  --color-border-primary: var(--color-gray-200);
  --color-border-secondary: var(--color-gray-300);
  --color-border-focus: var(--color-primary);
  --color-border-error: var(--color-error-light);

  /* Text Colors */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-tertiary: var(--color-gray-500);
  --color-text-inverse: var(--color-white);
  --color-text-link: var(--color-primary);
  --color-text-link-hover: var(--color-primary-dark);

  /* ============================================
     TYPOGRAPHY TOKENS
     ============================================ */

  /* Font Families */
  --font-family-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'DM Mono', 'Roboto Mono', 'SFMono-Regular', Menlo, Monaco, 'Courier New', monospace;

  /* Font Sizes - Type Scale (1.250 - Major Third) */
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-md: 1.125rem;     /* 18px */
  --font-size-lg: 1.25rem;      /* 20px */
  --font-size-xl: 1.5rem;       /* 24px */
  --font-size-2xl: 1.875rem;    /* 30px */
  --font-size-3xl: 2.25rem;     /* 36px */
  --font-size-4xl: 3rem;        /* 48px */
  --font-size-5xl: 3.75rem;     /* 60px */
  --font-size-6xl: 4.5rem;      /* 72px */

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

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ============================================
     SPACING TOKENS
     ============================================ */

  /* Spacing Scale (4px base) */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;   /* 2px */
  --spacing-1: 0.25rem;      /* 4px */
  --spacing-1-5: 0.375rem;   /* 6px */
  --spacing-2: 0.5rem;       /* 8px */
  --spacing-2-5: 0.625rem;   /* 10px */
  --spacing-3: 0.75rem;      /* 12px */
  --spacing-4: 1rem;         /* 16px */
  --spacing-5: 1.25rem;      /* 20px */
  --spacing-6: 1.5rem;       /* 24px */
  --spacing-7: 1.75rem;      /* 28px */
  --spacing-8: 2rem;         /* 32px */
  --spacing-9: 2.25rem;      /* 36px */
  --spacing-10: 2.5rem;      /* 40px */
  --spacing-12: 3rem;        /* 48px */
  --spacing-14: 3.5rem;      /* 56px */
  --spacing-16: 4rem;        /* 64px */
  --spacing-20: 5rem;        /* 80px */
  --spacing-24: 6rem;        /* 96px */
  --spacing-28: 7rem;        /* 112px */
  --spacing-32: 8rem;        /* 128px */

  /* Legacy spacing (for backwards compatibility) */
  --spacing-xs: var(--spacing-2);
  --spacing-sm: var(--spacing-4);
  --spacing-md: var(--spacing-6);
  --spacing-lg: var(--spacing-8);
  --spacing-xl: var(--spacing-12);
  --spacing-2xl: var(--spacing-16);
  --spacing-3xl: var(--spacing-24);

  /* ============================================
     LAYOUT TOKENS
     ============================================ */

  /* Container Sizes */
  --container-max-width: 1280px;
  --container-max-width-narrow: 768px;
  --container-max-width-wide: 1536px;
  --container-padding: var(--spacing-6);
  --container-padding-mobile: var(--spacing-4);

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

  /* Z-Index Scale */
  --z-index-base: 0;
  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-fixed: 300;
  --z-index-modal-backdrop: 400;
  --z-index-modal: 500;
  --z-index-popover: 600;
  --z-index-tooltip: 700;
  --z-index-notification: 800;
  --z-index-max: 999;

  /* ============================================
     BORDER TOKENS
     ============================================ */

  /* Border Widths */
  --border-width-0: 0;
  --border-width-1: 1px;
  --border-width-2: 2px;
  --border-width-4: 4px;
  --border-width-8: 8px;

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.375rem;    /* 6px */
  --radius-base: 0.5rem;    /* 8px */
  --radius-md: 0.5rem;      /* 8px */
  --radius-lg: 0.75rem;     /* 12px */
  --radius-xl: 1rem;        /* 16px */
  --radius-2xl: 1.5rem;     /* 24px */
  --radius-3xl: 2rem;       /* 32px */
  --radius-full: 9999px;

  /* ============================================
     SHADOW TOKENS
     ============================================ */

  /* Box Shadows */
  --shadow-none: none;
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

  /* Glow Effects (for emphasis) */
  --glow-primary: 0 0 20px var(--color-primary-light);
  --glow-accent: 0 0 20px var(--color-accent-light);
  --glow-people: 0 0 20px var(--color-pillar-people);
  --glow-planet: 0 0 20px var(--color-pillar-planet);
  --glow-science: 0 0 20px var(--color-pillar-science);

  /* ============================================
     ANIMATION TOKENS
     ============================================ */

  /* Timing Functions */
  --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-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-hero: cubic-bezier(0.33, 1, 0.68, 1);

  /* Duration */
  --duration-instant: 0ms;
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;
  --duration-slowest: 750ms;

  /* Transitions (combined) */
  --transition-fast: var(--duration-fast) var(--ease-out);
  --transition-base: var(--duration-base) var(--ease-out);
  --transition-slow: var(--duration-slow) var(--ease-out);
  --transition-hero: var(--duration-base) var(--ease-hero);

  /* ============================================
     OPACITY TOKENS
     ============================================ */

  --opacity-0: 0;
  --opacity-5: 0.05;
  --opacity-10: 0.1;
  --opacity-20: 0.2;
  --opacity-30: 0.3;
  --opacity-40: 0.4;
  --opacity-50: 0.5;
  --opacity-60: 0.6;
  --opacity-70: 0.7;
  --opacity-80: 0.8;
  --opacity-90: 0.9;
  --opacity-95: 0.95;
  --opacity-100: 1;

  /* Semantic Opacity */
  --opacity-disabled: var(--opacity-40);
  --opacity-hover: var(--opacity-80);
  --opacity-overlay: var(--opacity-50);

  /* ============================================
     COMPONENT-SPECIFIC TOKENS
     ============================================ */

  /* Buttons */
  --button-padding-x: var(--spacing-6);
  --button-padding-y: var(--spacing-3);
  --button-radius: var(--radius-lg);
  --button-font-weight: var(--font-weight-semibold);

  /* Inputs */
  --input-padding-x: var(--spacing-4);
  --input-padding-y: var(--spacing-3);
  --input-radius: var(--radius-md);
  --input-border-width: var(--border-width-1);
  --input-border-color: var(--color-border-primary);
  --input-border-color-focus: var(--color-border-focus);

  /* Cards */
  --card-padding: var(--spacing-6);
  --card-radius: var(--radius-xl);
  --card-shadow: var(--shadow-lg);
  --card-border-width: var(--border-width-1);
  --card-border-color: var(--color-border-primary);

  /* Focus Ring */
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
  --focus-ring-color: var(--color-primary);
  --focus-ring-opacity: 0.5;
  --focus-ring-style: solid;

  /* Modals & Overlays */
  --modal-padding: var(--spacing-8);
  --modal-radius: var(--radius-xl);
  --modal-shadow: var(--shadow-2xl);
  --modal-max-width: 600px;
  --modal-backdrop-color: rgba(0, 0, 0, 0.75);
  --modal-backdrop-blur: 4px;

  /* Tooltips & Popovers */
  --tooltip-padding-x: var(--spacing-3);
  --tooltip-padding-y: var(--spacing-2);
  --tooltip-radius: var(--radius-md);
  --tooltip-shadow: var(--shadow-lg);
  --tooltip-bg: var(--color-gray-900);
  --tooltip-text: var(--color-white);
  --tooltip-max-width: 320px;

  --popover-padding: var(--spacing-4);
  --popover-radius: var(--radius-lg);
  --popover-shadow: var(--shadow-xl);
  --popover-border-width: var(--border-width-1);
  --popover-border-color: var(--color-border-primary);

  /* Alerts & Notifications */
  --alert-padding: var(--spacing-4);
  --alert-radius: var(--radius-md);
  --alert-border-width: var(--border-width-1);

  --alert-success-bg: rgba(16, 185, 129, 0.1);
  --alert-success-border: var(--color-success-light);
  --alert-success-text: #065f46;

  --alert-warning-bg: rgba(245, 158, 11, 0.1);
  --alert-warning-border: var(--color-warning-light);
  --alert-warning-text: #92400e;

  --alert-error-bg: rgba(239, 68, 68, 0.1);
  --alert-error-border: var(--color-error-light);
  --alert-error-text: #991b1b;

  --alert-info-bg: rgba(59, 130, 246, 0.1);
  --alert-info-border: var(--color-info-light);
  --alert-info-text: #1e40af;

  /* Badges & Tags */
  --badge-padding-x: var(--spacing-2-5);
  --badge-padding-y: var(--spacing-1);
  --badge-radius: var(--radius-full);
  --badge-font-size: var(--font-size-xs);
  --badge-font-weight: var(--font-weight-semibold);

  /* Form Validation States */
  --input-border-color-success: var(--color-success-light);
  --input-border-color-warning: var(--color-warning-light);
  --input-border-color-error: var(--color-error-light);
  --input-background-disabled: var(--color-gray-100);
  --input-text-disabled: var(--color-gray-500);

  /* Form Labels & Help Text */
  --label-font-size: var(--font-size-sm);
  --label-font-weight: var(--font-weight-medium);
  --label-margin-bottom: var(--spacing-2);
  --label-color: var(--color-text-primary);
  --label-color-required: var(--color-error-light);

  --help-text-font-size: var(--font-size-sm);
  --help-text-color: var(--color-text-secondary);
  --help-text-margin-top: var(--spacing-1-5);

  /* Disabled States */
  --disabled-opacity: var(--opacity-40);
  --disabled-cursor: not-allowed;
  --disabled-bg: var(--color-gray-100);
  --disabled-text: var(--color-gray-500);
  --disabled-border: var(--color-gray-300);

  /* Interactive States */
  --hover-opacity: var(--opacity-90);
  --active-opacity: var(--opacity-80);
  --hover-scale: 1.02;
  --active-scale: 0.98;

  /* Links */
  --link-decoration: none;
  --link-decoration-hover: underline;
  --link-underline-offset: 2px;

  /* Dividers */
  --divider-width: var(--border-width-1);
  --divider-color: var(--color-border-primary);
  --divider-margin-y: var(--spacing-6);

  /* Tables */
  --table-padding-x: var(--spacing-4);
  --table-padding-y: var(--spacing-3);
  --table-border-color: var(--color-border-primary);
  --table-header-bg: var(--color-gray-50);
  --table-header-text: var(--color-text-primary);
  --table-row-hover-bg: var(--color-gray-50);
  --table-stripe-bg: var(--color-gray-100);

  /* Progress Bars */
  --progress-height: 8px;
  --progress-radius: var(--radius-full);
  --progress-bg: var(--color-gray-200);
  --progress-fill: var(--color-primary);

  /* Skeletons & Loading States */
  --skeleton-bg: var(--color-gray-200);
  --skeleton-highlight: var(--color-gray-300);
  --skeleton-radius: var(--radius-md);
  --skeleton-animation-duration: 1.5s;

  /* Avatars */
  --avatar-size-xs: 24px;
  --avatar-size-sm: 32px;
  --avatar-size-md: 40px;
  --avatar-size-lg: 48px;
  --avatar-size-xl: 64px;
  --avatar-size-2xl: 96px;
  --avatar-radius: var(--radius-full);

  /* Icon Sizes */
  --icon-size-xs: 12px;
  --icon-size-sm: 16px;
  --icon-size-md: 20px;
  --icon-size-lg: 24px;
  --icon-size-xl: 32px;
  --icon-size-2xl: 48px;
}

/* ============================================
   DARK THEME OVERRIDES
   ============================================ */

[data-theme="dark"] {
  /* Background Colors */
  --color-background-primary: #0f172a;
  --color-background-secondary: #1e293b;
  --color-background-tertiary: #334155;
  --color-background-inverse: var(--color-white);

  /* Surface Colors */
  --color-surface-primary: #1e293b;
  --color-surface-secondary: #334155;
  --color-surface-elevated: #475569;
  --color-surface-overlay: rgba(0, 0, 0, 0.75);

  /* Text Colors */
  --color-text-primary: var(--color-gray-50);
  --color-text-secondary: var(--color-gray-400);
  --color-text-tertiary: var(--color-gray-500);
  --color-text-inverse: var(--color-gray-900);

  /* Border Colors */
  --color-border-primary: rgba(148, 163, 184, 0.2);
  --color-border-secondary: rgba(148, 163, 184, 0.3);

  /* Adjusted Gray Scale for Dark Mode */
  --color-gray-600: #94a3b8;
  --color-gray-700: #cbd5e1;
  --color-gray-800: #e2e8f0;
  --color-gray-900: #f8fafc;

  /* Shadows - Softer in dark mode */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);

  /* Component adjustments */
  --input-border-color: rgba(148, 163, 184, 0.3);
  --card-border-color: rgba(148, 163, 184, 0.2);

  /* Tooltips & Popovers - Dark Mode */
  --tooltip-bg: var(--color-gray-100);
  --tooltip-text: var(--color-gray-900);
  --popover-border-color: rgba(148, 163, 184, 0.2);

  /* Alerts - Dark Mode */
  --alert-success-bg: rgba(16, 185, 129, 0.15);
  --alert-success-text: #6ee7b7;

  --alert-warning-bg: rgba(245, 158, 11, 0.15);
  --alert-warning-text: #fbbf24;

  --alert-error-bg: rgba(239, 68, 68, 0.15);
  --alert-error-text: #fca5a5;

  --alert-info-bg: rgba(59, 130, 246, 0.15);
  --alert-info-text: #93c5fd;

  /* Form States - Dark Mode */
  --input-background-disabled: rgba(148, 163, 184, 0.1);
  --input-text-disabled: var(--color-gray-600);

  /* Tables - Dark Mode */
  --table-header-bg: rgba(148, 163, 184, 0.1);
  --table-row-hover-bg: rgba(148, 163, 184, 0.05);
  --table-stripe-bg: rgba(148, 163, 184, 0.03);
  --table-border-color: rgba(148, 163, 184, 0.2);

  /* Skeletons - Dark Mode */
  --skeleton-bg: rgba(148, 163, 184, 0.1);
  --skeleton-highlight: rgba(148, 163, 184, 0.2);

  /* Disabled States - Dark Mode */
  --disabled-bg: rgba(148, 163, 184, 0.1);
  --disabled-text: var(--color-gray-600);
  --disabled-border: rgba(148, 163, 184, 0.2);

  /* Dividers - Dark Mode */
  --divider-color: rgba(148, 163, 184, 0.2);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
  :root {
    --container-padding: var(--container-padding-mobile);
    --font-size-3xl: 1.875rem;    /* Scale down on mobile */
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
  }
}

/* ============================================
   ACCESSIBILITY OVERRIDES
   ============================================ */

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0.01ms;
    --duration-base: 0.01ms;
    --duration-slow: 0.01ms;
    --duration-slower: 0.01ms;
    --duration-slowest: 0.01ms;
  }
}

/* High contrast mode adjustments */
@media (prefers-contrast: high) {
  :root {
    --color-border-primary: var(--color-gray-400);
    --color-border-secondary: var(--color-gray-500);
    --focus-ring-width: 3px;
  }
}