/* ============================================================
   base.css — Reset CSS + typographie globale + layouts de base
   Cohérent posture rendu non-IA §8.32 (sobre institutionnel).
   Pas de classe utilitaire générique (anti-Tailwind cohérent PROJECT §15.1).
   ============================================================ */

/* ----------------------------------------------------------
   Reset minimal (basé Andy Bell modern CSS reset)
   ---------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  font-feature-settings: 'cv01', 'cv02', 'cv03';  /* Sora alternative glyphs */
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-sora);
  font-size: var(--texte-base);
  font-weight: var(--poids-regular);
  line-height: var(--interligne-normal);
  color: var(--text-page);
  background-color: var(--background-page);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  min-height: 100dvh;  /* dvh for mobile safe area */
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

a {
  color: var(--commune-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-standard), text-decoration-thickness var(--transition-standard);
}

a:hover {
  color: var(--commune-primary-dark);
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--rayon-sm);
  text-decoration-thickness: 2px;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  hyphens: auto;
}

/* ----------------------------------------------------------
   Typographie hiérarchique (Sora + minor third 1.2)
   ---------------------------------------------------------- */
h1, .h1 {
  font-size: var(--texte-4xl);
  font-weight: var(--poids-extrabold);
  line-height: var(--interligne-tight);
  letter-spacing: -0.02em;
  color: var(--text-page);
}

h2, .h2 {
  font-size: var(--texte-3xl);
  font-weight: var(--poids-bold);
  line-height: var(--interligne-tight);
  letter-spacing: -0.015em;
  color: var(--text-page);
}

h3, .h3 {
  font-size: var(--texte-2xl);
  font-weight: var(--poids-semibold);
  line-height: var(--interligne-tight);
  color: var(--text-page);
}

h4, .h4 {
  font-size: var(--texte-xl);
  font-weight: var(--poids-semibold);
  line-height: var(--interligne-normal);
  color: var(--text-page);
}

h5, .h5 {
  font-size: var(--texte-lg);
  font-weight: var(--poids-semibold);
  line-height: var(--interligne-normal);
  color: var(--text-page);
}

h6, .h6 {
  font-size: var(--texte-base);
  font-weight: var(--poids-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondaire);
}

p {
  line-height: var(--interligne-relaxed);
  color: var(--text-page);
}

p + p {
  margin-top: var(--espacement-md);
}

/* ----------------------------------------------------------
   Liens utilitaires accessibilité (skip links RGAA 12.7)
   ---------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--espacement-md);
  z-index: 9999;
  background: var(--commune-primary);
  color: var(--text-inverse);
  padding: var(--espacement-sm) var(--espacement-md);
  border-radius: var(--rayon-md);
  font-weight: var(--poids-semibold);
  text-decoration: none;
  transition: top var(--transition-standard);
}

.skip-link:focus {
  top: var(--espacement-md);
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ----------------------------------------------------------
   Conteneurs et layouts de base
   ---------------------------------------------------------- */
.conteneur {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--espacement-md);
  max-width: 1280px;  /* cohérent --bp-desktop */
}

@media (min-width: 768px) {
  .conteneur {
    padding: 0 var(--espacement-lg);
  }
}

.conteneur-large {
  max-width: 1536px;  /* cohérent --bp-large */
}

.conteneur-etroit {
  max-width: 768px;
}

/* Stack vertical (logical spacing) */
.stack > * + * {
  margin-top: var(--espacement-md);
}

.stack-sm > * + * {
  margin-top: var(--espacement-sm);
}

.stack-lg > * + * {
  margin-top: var(--espacement-lg);
}

/* Cluster horizontal (flex wrap) */
.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--espacement-md);
  align-items: center;
}

/* Grid responsive cohérent décision mineure UI-18.1 */
.grille-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--espacement-lg);
}

.grille-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--espacement-lg);
}

@media (min-width: 768px) {
  .grille-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grille-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--espacement-lg);
}

@media (min-width: 768px) {
  .grille-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grille-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ----------------------------------------------------------
   Sections de base
   ---------------------------------------------------------- */
main {
  display: block;
}

section {
  padding: var(--espacement-xxl) 0;
}

@media (min-width: 768px) {
  section {
    padding: var(--espacement-3xl) 0;
  }
}

/* ----------------------------------------------------------
   Sélection texte (couleur commune)
   ---------------------------------------------------------- */
::selection {
  background-color: var(--commune-primary-alpha-20);
  color: var(--text-page);
}

/* ----------------------------------------------------------
   Scrollbar custom sobre (Webkit + Firefox)
   ---------------------------------------------------------- */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--gris-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gris-400);
  border-radius: var(--rayon-rond);
  border: 3px solid var(--gris-100);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gris-600);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--gris-400) var(--gris-100);
}