@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* -------------------------------------------------
   THEME ENGINE CORE
   Neutral surfaces, typography, spacing, helpers.
   Brand colors come ONLY from ThemeEngine.php.
   ------------------------------------------------- */

:root {
  /* ---------------------------------------------
     GRAYS / NEUTRALS
     --------------------------------------------- */
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* ---------------------------------------------
     TYPOGRAPHY
     --------------------------------------------- */
  --font-base: 'Inter', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;

  /* ---------------------------------------------
     SPACING
     --------------------------------------------- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  /* ---------------------------------------------
     RADII
     --------------------------------------------- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* ---------------------------------------------
     SHADOWS
     --------------------------------------------- */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 8px rgba(15, 23, 42, 0.10);

  /* ---------------------------------------------
     LIGHT MODE SURFACES
     --------------------------------------------- */
  --bg: #ffffff;
  --bg-elevated: #ffffff;
  --bg-subtle: #f3f4f6;

  --border-subtle: #e5e7eb;

  --text-main: #111827;
  --text-muted: #6b7280;

  /* Global helpers */
  --color-bg: var(--bg);
  --color-fg: var(--text-main);

  /* Text helpers (brand text comes from ThemeEngine) */
  --text-on-primary: var(--color-on-primary);
  --text-on-secondary: var(--color-on-secondary);

  /* Sidebar helpers */
  --sidebar-bg: var(--bg-elevated);
  --sidebar-text: var(--text-main);
  --sidebar-text-muted: var(--text-muted);

  /* Footer nav helpers */
  --footer-nav-height: 64px;
  --footer-safe-area: 0px;
}

/* -------------------------------------------------
   DARK MODE (SURFACES ONLY)
   Brand colors still come from ThemeEngine.
   ------------------------------------------------- */
[data-theme="dark"] {
  --bg: #020617;
  --bg-elevated: #0f172a;
  --bg-subtle: #1e293b;

  --border-subtle: #334155;

  --text-main: #e5e7eb;
  --text-muted: #94a3b8;

  --color-bg: var(--bg);
  --color-fg: var(--text-main);

  --sidebar-bg: var(--bg-elevated);
  --sidebar-text: var(--text-main);
  --sidebar-text-muted: var(--text-muted);
}

/* -------------------------------------------------
   BASE BODY STYLING
   ------------------------------------------------- */
body {
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}