/* ==========================================================================
   SebaGhar — Design Tokens
   Centralised theme contract. Every colour, type size, spacing value,
   radius, shadow and motion timing used across the site is declared here.
   Nothing below should be hard-coded again in component stylesheets.
   ========================================================================== */

:root {
  /* -- Brand colour --------------------------------------------------- */
  --color-primary: #0F62FE;
  --color-primary-rgb: 15, 98, 254;
  --color-primary-600: #0B4FD1;
  --color-primary-700: #0A3FA8;
  --color-primary-100: #E7EFFE;
  --color-primary-50: #F2F6FF;

  --color-secondary: #16A34A;
  --color-secondary-rgb: 22, 163, 74;
  --color-secondary-600: #128A3E;
  --color-secondary-100: #E3F6EA;

  --color-accent: #F59E0B;
  --color-accent-rgb: 245, 158, 11;
  --color-accent-600: #C97F08;
  --color-accent-100: #FEF3DE;

  /* -- Surfaces & text -------------------------------------------------- */
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-raised: #FFFFFF;
  --color-surface-sunken: #F1F5F9;

  --color-text: #111827;
  --color-text-muted: #64748B;
  --color-text-faint: #94A3B8;
  --color-text-on-primary: #FFFFFF;
  --color-text-on-dark: #F8FAFC;

  --color-border: #E2E8F0;
  --color-border-strong: #CBD5E1;

  /* -- Dark-mode-ready scaffold (inactive by default) -------------------
     Toggling <html data-theme="dark"> will re-map every semantic token
     below without touching component CSS. Not enabled in Phase 1. */
  --color-bg-dark: #0B1220;
  --color-surface-dark: #111A2B;
  --color-surface-raised-dark: #16223A;
  --color-text-dark: #F1F5F9;
  --color-text-muted-dark: #94A3B8;
  --color-border-dark: #223154;

  /* -- Typography --------------------------------------------------------- */
  --font-heading: "Poppins", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --fs-xs: 0.75rem;      /* 12px */
  --fs-sm: 0.875rem;     /* 14px */
  --fs-base: 1rem;       /* 16px */
  --fs-md: 1.125rem;     /* 18px */
  --fs-lg: 1.25rem;      /* 20px */
  --fs-xl: 1.5rem;       /* 24px */
  --fs-2xl: 1.875rem;    /* 30px */
  --fs-3xl: 2.25rem;     /* 36px */
  --fs-4xl: 2.75rem;     /* 44px */
  --fs-5xl: 3.25rem;     /* 52px */

  --lh-tight: 1.15;
  --lh-snug: 1.35;
  --lh-normal: 1.6;
  --lh-relaxed: 1.75;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --ls-tight: -0.02em;
  --ls-normal: 0;
  --ls-wide: 0.04em;

  /* -- Spacing scale (4px base) -------------------------------------------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* -- Layout --------------------------------------------------------- */
  --container-max: 1280px;
  --container-padding: clamp(1.25rem, 4vw, 2.5rem);
  --header-height: 72px;
  --header-height-scrolled: 64px;

  /* -- Radius --------------------------------------------------------- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* -- Shadow ----------------------------------------------------------- */
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.05);
  --shadow-md: 0 6px 20px -6px rgba(17, 24, 39, 0.12);
  --shadow-lg: 0 20px 45px -15px rgba(17, 24, 39, 0.18);
  --shadow-xl: 0 30px 60px -20px rgba(17, 24, 39, 0.25);
  --shadow-primary: 0 12px 24px -8px rgba(var(--color-primary-rgb), 0.35);

  /* -- Motion ------------------------------------------------------------- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 450ms;
  --duration-ambient: 12s;

  /* -- Z-index scale -------------------------------------------------- */
  --z-base: 1;
  --z-nav: 100;
  --z-overlay: 200;
  --z-modal: 210;
  --z-toast: 220;
  --z-skip-link: 300;
}

/* Dark-mode token re-map (architecture only — activate later by adding
   data-theme="dark" to <html>, or wiring to prefers-color-scheme). */
[data-theme="dark"] {
  --color-bg: var(--color-bg-dark);
  --color-surface: var(--color-surface-dark);
  --color-surface-raised: var(--color-surface-raised-dark);
  --color-surface-sunken: #0E1728;
  --color-text: var(--color-text-dark);
  --color-text-muted: var(--color-text-muted-dark);
  --color-border: var(--color-border-dark);
}