/**
 * variables.css - Design tokens for the Vân Sơn tourism landing page
 * Palette: highland forest greens, warm mist cream, rust/earth accents
 */

:root {
  /* ---- Color: Core Palette ---- */
  --color-primary: #125238;
  --color-primary-light: #2f6b4f;
  --color-primary-dim: #96d4b2;
  --color-secondary: #296a48;
  --color-tertiary: #723739;
  --color-tertiary-light: #8e4e50;
  --color-deep-forest: #12251c;
  --color-earth-brown: #5d4037;
  --color-gold: #c99b4f;

  /* ---- Color: Surfaces ---- */
  --color-background: #fdf9f1;
  --color-surface: #ffffff;
  --color-surface-container: #f1ede6;
  --color-surface-container-low: #f7f3eb;
  --color-surface-container-high: #ece8e0;

  /* ---- Color: Text ---- */
  --color-on-surface: #1c1c17;
  --color-on-surface-variant: #47504a;
  --color-on-primary: #ffffff;
  --color-muted: #706f6c;
  --color-outline-variant: #c0c9c1;

  /* ---- Color: Overlay / Glass ---- */
  --color-glass-bg: rgba(255, 255, 255, 0.55);
  --color-glass-border: rgba(255, 255, 255, 0.4);
  --color-overlay-dark: rgba(10, 20, 15, 0.55);

  /* ---- Typography ---- */
  --font-display: 'Dancing Script', 'Georgia', serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-script: 'Playwrite VN', cursive;
  --font-section-title: 'Lobster', cursive;

  --fs-display-xl: clamp(2.75rem, 2rem + 3.5vw, 6rem);
  --fs-display-lg: clamp(2.25rem, 1.7rem + 2.5vw, 4rem);
  --fs-display-md: clamp(1.8rem, 1.5rem + 1.5vw, 2.75rem);
  --fs-headline: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --fs-body-lg: clamp(1.05rem, 1rem + 0.3vw, 1.25rem);
  --fs-body-md: 1rem;
  --fs-body-sm: 0.9rem;
  --fs-label: 0.8rem;

  --lh-tight: 1.1;
  --lh-snug: 1.3;
  --lh-relaxed: 1.7;

  --ls-caps: 0.18em;

  /* ---- Spacing ---- */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: clamp(4rem, 3rem + 4vw, 8rem);
  --space-3xl: clamp(5rem, 3.5rem + 6vw, 10rem);

  --gutter: clamp(1.25rem, 1rem + 2vw, 2rem);
  --margin-inline: clamp(1.25rem, -1rem + 8vw, 5rem);
  --container-max: 1440px;
  --container-content: 1200px;

  /* ---- Radius ---- */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 999px;

  /* ---- Shadow ---- */
  --shadow-sm: 0 2px 12px rgba(18, 37, 28, 0.08);
  --shadow-md: 0 12px 32px rgba(18, 37, 28, 0.14);
  --shadow-lg: 0 24px 64px rgba(18, 37, 28, 0.22);

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.3s;
  --duration-base: 0.6s;
  --duration-slow: 1s;

  /* ---- Z-index ---- */
  --z-nav: 100;
  --z-overlay: 200;
  --z-cursor: 300;
}