/* ============================================
   PLAYLISTY — Design System Variables
   ============================================ */

:root {
  /* ── Typography ── */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.6875rem;    /* 11px */
  --text-sm: 0.75rem;      /* 12px */
  --text-base: 0.8125rem;  /* 13px */
  --text-md: 0.875rem;     /* 14px */
  --text-lg: 1rem;         /* 16px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 2rem;        /* 32px */
  --text-4xl: 2.5rem;      /* 40px */

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;

  /* ── Spacing ── */
  --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 */

  /* ── Border Radius ── */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* ── Transitions ── */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(139, 92, 246, 0.25);

  /* ── Z-index ── */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 500;
  --z-toast: 1000;

  /* ── Layout ── */
  --sidebar-width: 260px;
  --header-height: 56px;
  --content-max-width: 1200px;
}

/* ============================================
   DARK THEME (Default)
   ============================================ */
[data-theme="dark"] {
  --accent-primary: #AACDDC;
  --accent-primary-light: #C2DFE9;
  --accent-primary-dark: #8BBBD0;
  --accent-secondary: #1a1f27;
  --logo-color: #F3E3D0;
  --logo-icon-color: #1a1f27;

  --nav-bg: #212730;
  --nav-border: #2f3744;
  --nav-after-bg: #1e2430;
  --nav-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  --nav-text: #a89f8f;
  --nav-hover-bg: #2a3140;
  --nav-hover-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);

  --bg-primary: #1a1f27;
  --bg-secondary: #242b36;
  --bg-tertiary: #2f3744;
  --bg-elevated: #343d4d;
  --bg-surface: #2a3240;
  --bg-hover: rgba(74, 85, 104, 0.4);
  --bg-active: #a89f8f;
  --bg-input: #242b36;

  --border-primary: #3d4556;
  --border-secondary: #56617a;
  --border-accent: #AACDDC;
  --border-focus: #AACDDC;

  --text-primary: #F3E3D0;
  --text-secondary: #DFD0B8;
  --text-tertiary: #a89f8f;
  --text-muted: #6b7894;
  --text-accent: #AACDDC;
  --text-inverse: #1a1f27;

  --scrollbar-track: #1a1f27;
  --scrollbar-thumb: #3d4556;
  --scrollbar-thumb-hover: #a89f8f;

  --glass-bg: rgba(42, 49, 64, 0.75);
  --glass-border: rgba(74, 85, 104, 0.6);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(170, 205, 220, 0.03);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(170, 205, 220, 0.04);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35), 0 4px 8px rgba(170, 205, 220, 0.05);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4), 0 8px 16px rgba(170, 205, 220, 0.05);
  --shadow-glow: 0 0 24px rgba(170, 205, 220, 0.2);

  color-scheme: dark;
}

/* ============================================
   LIGHT THEME
   ============================================ */
[data-theme="light"] {
  --accent-primary: #81A6C6;
  --accent-primary-light: #AACDDC;
  --accent-primary-dark: #6890B0;
  --accent-secondary: #F3E3D0;
  --logo-color: #393E46;
  --logo-icon-color: #F3E3D0;

  --nav-bg: #F3E3D0;
  --nav-border: #D2C4B4;
  --nav-after-bg: #F3E3D0;
  --nav-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  --nav-text: #948979;
  --nav-hover-bg: #e8d8c5;
  --nav-hover-shadow: none;

  --bg-primary: #F3E3D0;
  --bg-secondary: #e8d8c5;
  --bg-tertiary: #D2C4B4;
  --bg-elevated: #faf0e3;
  --bg-surface: #e8d8c5;
  --bg-hover: rgba(210, 196, 180, 0.5);
  --bg-active: #81A6C6;
  --bg-input: #faf0e3;

  --border-primary: #D2C4B4;
  --border-secondary: #c0b0a0;
  --border-accent: #81A6C6;
  --border-focus: #81A6C6;

  --text-primary: #222831;
  --text-secondary: #393E46;
  --text-tertiary: #6a6050;
  --text-muted: #b0a494;
  --text-accent: #81A6C6;
  --text-inverse: #F3E3D0;

  --scrollbar-track: #F3E3D0;
  --scrollbar-thumb: #D2C4B4;
  --scrollbar-thumb-hover: #c0b0a0;

  --glass-bg: rgba(243, 227, 208, 0.85);
  --glass-border: #D2C4B4;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 24px rgba(129, 166, 198, 0.15);

  color-scheme: light;
}