:root {
  /* Typography - Prefer system UI fonts (Apple HIG-ish) */
  --font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Helvetica Neue", Arial, sans-serif;
  --font-family-mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  color-scheme: light dark;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Colors - Dark Mode (Default) */
  --color-primary: #0a84ff;
  --color-primary-dark: #409cff;
  --color-secondary: #5e5ce6;
  --color-success: #30d158;
  --color-warning: #ff9f0a;
  --color-danger: #ff453a;
  --color-danger-dark: #ff6961;
  --color-background: rgba(
    28,
    28,
    30,
    0.95
  ); /* Semi-transparent for glass effect */
  --color-card: rgba(44, 44, 46, 0.8); /* Semi-transparent for glass effect */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text-primary: #ffffff;
  --color-text-secondary: #ebebf5;
  --color-text-tertiary: #8e8e93;
  --color-text-on-primary: #ffffff;
  --color-logout: rgba(255, 159, 10, 0.8); /* Orange-tinted for logout */

  /* Gradients */
  --gradient-title: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-secondary)
  );

  /* Shadows for dark mode */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* Animation - Subtle */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.3s cubic-bezier(0.16, 1, 0.3, 1);

  /* Blur for glass effect */
  --blur-sm: 8px;
  --blur-md: 12px;
  --blur-lg: 20px;
}

/* Light Mode Support - Based on device preference */
@media (prefers-color-scheme: light) {
  :root {
    --color-primary: #0070f3;
    --color-primary-dark: #0051a8;
    --color-secondary: #5e5ce6;
    --color-success: #34c759;
    --color-warning: #ff9500;
    --color-danger: #ff3b30;
    --color-danger-dark: #d70015;
    --color-background: rgba(
      245,
      245,
      247,
      0.9
    ); /* Semi-transparent for glass effect */
    --color-card: rgba(
      255,
      255,
      255,
      0.8
    ); /* Semi-transparent for glass effect */
    --color-border: rgba(0, 0, 0, 0.06);
    --color-text-primary: #000000;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    --color-text-on-primary: #ffffff;
    --color-logout: rgba(255, 149, 0, 0.8); /* Orange-tinted for logout */

    /* Reset shadows for light mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.08);

    /* Update gradient for light mode */
    --gradient-title: linear-gradient(
      135deg,
      var(--color-primary),
      var(--color-secondary)
    );
  }
}

/* No external font imports. */