/* ==========================================================================
   Design Tokens - Personal App Store (Google Play Store Inspired)
   ========================================================================== */

:root {
  /* Color Palette - Light Theme Default */
  --color-primary: #01875f;
  --color-primary-hover: #016849;
  --color-primary-active: #01523a;
  --color-primary-subtle: #e6f4ea;
  --color-primary-subtle-text: #0d652d;
  
  --color-accent: #1a73e8;
  --color-accent-subtle: #e8f0fe;
  
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-variant: #f1f3f4;
  
  --color-text-primary: #202124;
  --color-text-secondary: #5f6368;
  --color-text-tertiary: #80868b;
  --color-text-inverse: #ffffff;
  
  --color-border: #dadce0;
  --color-border-subtle: #f1f3f4;
  --color-divider: #e8eaed;
  
  --color-badge-bg: #f1f3f4;
  --color-badge-text: #3c4043;
  --color-star: #e37400;

  --color-hero-bg-from: #e6f4ea;
  --color-hero-bg-to: #e8f0fe;
  --color-hero-card: #ffffff;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Google Sans", "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  --font-family-mono: "SF Mono", "Roboto Mono", "Fira Code", Consolas, monospace;
  
  --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-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Border Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows / Elevations */
  --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
  --shadow-md: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
  --shadow-lg: 0 2px 6px 2px rgba(60, 64, 67, 0.15), 0 8px 24px 4px rgba(60, 64, 67, 0.15);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width-content: 1120px;
  --header-height: 64px;
  --bottom-nav-height: 64px;
  --z-header: 100;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* System Dark Mode Detection */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #00a877;
    --color-primary-hover: #00c78e;
    --color-primary-active: #008f65;
    --color-primary-subtle: rgba(0, 168, 119, 0.16);
    --color-primary-subtle-text: #5cdbb5;

    --color-accent: #8ab4f8;
    --color-accent-subtle: rgba(138, 180, 248, 0.16);

    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-surface-elevated: #282828;
    --color-surface-variant: #2d2d2d;

    --color-text-primary: #e8eaed;
    --color-text-secondary: #9aa0a6;
    --color-text-tertiary: #70757a;
    --color-text-inverse: #121212;

    --color-border: #333333;
    --color-border-subtle: #242424;
    --color-divider: #2a2a2a;

    --color-badge-bg: #2c2c2c;
    --color-badge-text: #e8eaed;
    --color-star: #fbc02d;

    --color-hero-bg-from: #1a2721;
    --color-hero-bg-to: #182330;
    --color-hero-card: #1e1e1e;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6);
    --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.5);
  }
}

/* Explicit Dark Mode Override */
[data-theme="dark"] {
  --color-primary: #00a877;
  --color-primary-hover: #00c78e;
  --color-primary-active: #008f65;
  --color-primary-subtle: rgba(0, 168, 119, 0.16);
  --color-primary-subtle-text: #5cdbb5;

  --color-accent: #8ab4f8;
  --color-accent-subtle: rgba(138, 180, 248, 0.16);

  --color-background: #121212;
  --color-surface: #1e1e1e;
  --color-surface-elevated: #282828;
  --color-surface-variant: #2d2d2d;

  --color-text-primary: #e8eaed;
  --color-text-secondary: #9aa0a6;
  --color-text-tertiary: #70757a;
  --color-text-inverse: #121212;

  --color-border: #333333;
  --color-border-subtle: #242424;
  --color-divider: #2a2a2a;

  --color-badge-bg: #2c2c2c;
  --color-badge-text: #e8eaed;
  --color-star: #fbc02d;

  --color-hero-bg-from: #1a2721;
  --color-hero-bg-to: #182330;
  --color-hero-card: #1e1e1e;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6);
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* Explicit Light Mode Override */
[data-theme="light"] {
  --color-primary: #01875f;
  --color-primary-hover: #016849;
  --color-primary-active: #01523a;
  --color-primary-subtle: #e6f4ea;
  --color-primary-subtle-text: #0d652d;

  --color-accent: #1a73e8;
  --color-accent-subtle: #e8f0fe;

  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-variant: #f1f3f4;

  --color-text-primary: #202124;
  --color-text-secondary: #5f6368;
  --color-text-tertiary: #80868b;
  --color-text-inverse: #ffffff;

  --color-border: #dadce0;
  --color-border-subtle: #f1f3f4;
  --color-divider: #e8eaed;

  --color-badge-bg: #f1f3f4;
  --color-badge-text: #3c4043;
  --color-star: #e37400;

  --color-hero-bg-from: #e6f4ea;
  --color-hero-bg-to: #e8f0fe;
  --color-hero-card: #ffffff;

  --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
  --shadow-md: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
  --shadow-lg: 0 2px 6px 2px rgba(60, 64, 67, 0.15), 0 8px 24px 4px rgba(60, 64, 67, 0.15);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
}