/* ============================================================
   SiteOnTheGo — Design tokens (single source of truth)
   Modern & Clean · primary #1f2937 · accent #2563eb · bg #ffffff
   Type: Space Grotesk (display) + Inter (body) — clear, modern, and highly legible
   ============================================================ */

:root {
  /* Brand palette */
  --color-primary: #1f2937;
  --color-primary-deep: #16202c;
  --color-accent: #2563eb;
  --color-accent-strong: #1d4ed8;
  --color-accent-soft: #9db9f8;
  --color-accent-tint: #edf3fe;
  --color-accent-tint-deep: #d9e6fd;

  /* Surfaces (all neutrals tinted toward the brand slate-blue) */
  --color-bg: #ffffff;
  --color-surface: #f6f8fb;
  --color-surface-raised: #ffffff;

  /* Text & lines */
  --color-text: #1f2937;
  --color-text-muted: #505d6f;
  --color-border: #dfe6ee;
  --color-border-strong: #c4cfdd;

  /* On dark surfaces */
  --color-on-dark: #f3f6fa;
  --color-on-dark-muted: #b9c5d6;
  --color-border-on-dark: #35455c;
  --color-on-accent: #ffffff;

  /* Status & effects */
  --color-success: #177245;
  --color-success-tint: #e7f4ec;
  --color-selection-bg: #cfe0fd;
  --color-selection-text: #16202c;
  --color-header-bg: rgba(255, 255, 255, 0.88);
  --color-accent-glow: rgba(37, 99, 235, 0.14);
  --color-glow-on-dark: rgba(157, 185, 248, 0.14);

  /* Gradient stops (tinted washes, no purple) */
  --tint-grad-a: #edf3fe;
  --tint-grad-b: #d9e6fd;

  /* Typography */
  --font-display: "Space Grotesk", "Avenir Next", "Trebuchet MS", sans-serif;
  --font-body: "Inter", "Avenir Next", "Trebuchet MS", sans-serif;
  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: clamp(1.5rem, 2.6vw, 2rem);
  --text-hero: clamp(2.4rem, 5.4vw, 4rem);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --radius-btn: 10px;
  --radius-pill: 999px;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;

  /* Elevation (offset + soft blur) */
  --shadow-sm: 0 1px 2px rgba(22, 32, 44, 0.05), 0 3px 10px rgba(22, 32, 44, 0.06);
  --shadow-md: 0 2px 6px rgba(22, 32, 44, 0.06), 0 14px 34px rgba(22, 32, 44, 0.1);
  --shadow-accent: 0 6px 18px rgba(37, 99, 235, 0.28);
  --focus-ring: 0 0 0 3px rgba(37, 99, 235, 0.22);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-reveal: 600ms;

  /* Layout */
  --max-width: 1120px;
  --header-height: 4.5rem;
}