/* ==========================================================================
   variables.css — Charte graphique (design tokens)
   Couleurs, typographie, espacements, ombres, transitions.
   ========================================================================== */

:root {
  /* ---- Couleurs de marque (Côte d'Azur) ---- */
  --color-primary: #0284c7;        /* Bleu azur */
  --color-primary-dark: #075985;   /* Bleu profond (mer) */
  --color-primary-light: #38bdf8;  /* Ciel */
  --color-accent: #14b8a6;         /* Turquoise lagon */
  --color-accent-light: #2dd4bf;
  --color-sun: #fbbf24;            /* Soleil / sable doré (accent chaud) */

  /* ---- Neutres ---- */
  --color-ink: #0f172a;            /* Texte principal / fond sombre */
  --color-ink-soft: #1e293b;
  --color-slate: #475569;          /* Texte secondaire */
  --color-muted: #94a3b8;
  --color-line: #e2e8f0;           /* Bordures */
  --color-surface: #ffffff;
  --color-surface-alt: #eef6fb;    /* Fond de section alterné (azur très pâle) */
  --color-white: #ffffff;

  /* ---- États ---- */
  --color-success: #10b981;
  --color-error: #ef4444;

  /* ---- Dégradés (mer & azur) ---- */
  --gradient-brand: linear-gradient(135deg, #0284c7 0%, #06b6d4 50%, #2dd4bf 100%);
  --gradient-dark: linear-gradient(160deg, #082f49 0%, #0c4a6e 55%, #0e7490 100%);
  --gradient-glow: radial-gradient(circle at 30% 20%, rgba(56,189,248,.40), transparent 60%);
  --gradient-sea-overlay: linear-gradient(160deg, rgba(4,28,46,.93) 0%, rgba(6,42,67,.90) 55%, rgba(10,67,99,.86) 100%);

  /* ---- Typographie ---- */
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Sora", "Inter", system-ui, sans-serif;

  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.75rem;
  --fs-4xl: clamp(2.5rem, 5vw, 4rem);

  --lh-tight: 1.15;
  --lh-base: 1.7;

  /* ---- Espacements ---- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* ---- Rayons ---- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  /* ---- Ombres ---- */
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow-md: 0 8px 24px rgba(15,23,42,.08);
  --shadow-lg: 0 24px 60px rgba(15,23,42,.14);
  --shadow-glow: 0 12px 40px rgba(2,132,199,.38);

  /* ---- Transitions ---- */
  --ease: cubic-bezier(.16,.84,.44,1);
  --t-fast: .18s ease;
  --t-base: .3s var(--ease);

  /* ---- Layout ---- */
  --container: 1180px;
  --header-h: 76px;
}