/* ============================================================
   ÉMALIA — Base : reset, typographie, layout primitives
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}
@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;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background var(--dur-base) var(--ease-soft), color var(--dur-base) var(--ease-soft);
}

img, svg, video { display: block; max-width: 100%; height: auto; }
img { font-style: italic; color: var(--text-muted); }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }

::selection { background: var(--teal-600); color: #fff; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip-link : masqué jusqu'au focus clavier */
.skip-link {
  position: fixed; left: 0.75rem; top: 0.6rem; z-index: 1000;
  transform: translateY(-180%);
  background: var(--primary); color: #fff;
  padding: 0.65rem 1.1rem; border-radius: var(--r-sm);
  font-weight: 600; box-shadow: var(--shadow-md);
  transition: transform var(--dur-fast) var(--ease-soft);
}
.skip-link:focus { transform: translateY(0); outline: 2px solid #fff; outline-offset: 2px; }

/* ---- Film-grain overlay (texture papier physique) ---- */
.grain {
  position: fixed;
  inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="dark"] .grain { mix-blend-mode: screen; opacity: 0.05; }

/* ============================================================
   TYPOGRAPHIE
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-snug);
  letter-spacing: -0.025em;
  color: var(--text);
  text-wrap: balance;
}
h1 { font-size: var(--fs-4xl); line-height: var(--lh-tight); font-weight: 500; letter-spacing: -0.035em; }
h2 { font-size: var(--fs-3xl); letter-spacing: -0.03em; }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }

p { text-wrap: pretty; }
.lead {
  font-size: var(--fs-lg);
  line-height: 1.55;
  color: var(--text-soft);
}
strong { font-weight: 600; }
em { font-style: italic; }

/* Accent de titre (mot mis en valeur) */
.serif-em {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 500;
  letter-spacing: -0.03em;
}
.text-accent { color: var(--primary-deep); }
.text-coral  { color: var(--coral-600); }

/* ============================================================
   LAYOUT PRIMITIVES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide   { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: clamp(4.5rem, 3rem + 7vw, 9rem); }
.section--tight { padding-block: clamp(3rem, 2rem + 4vw, 5.5rem); }
.section--alt { background: var(--bg-alt); }
.section--sand { background: linear-gradient(180deg, var(--bg) 0%, var(--surface-sand) 100%); }
.section--ink {
  background: radial-gradient(120% 130% at 80% 0%, var(--teal-800) 0%, var(--teal-950) 70%);
  color: var(--text-invert);
}
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }

.stack > * + * { margin-top: var(--space-5); }
.stack-sm > * + * { margin-top: var(--space-3); }
.stack-lg > * + * { margin-top: var(--space-7); }

/* Grilles intrinsèques : reflow automatique sans media-query.
   min(100%, …) évite tout débordement quand le viewport < la largeur mini. */
.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 12.5rem), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 15.5rem), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13.5rem), 1fr)); }

.cluster { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; }
.between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }

/* Section header (eyebrow + titre + intro) */
.section-head { max-width: 44rem; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head .lead { margin-top: var(--space-4); }

/* ---- Utilitaires ---- */
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); }
.full { width: 100%; }
.hide-mobile { }
.measure { max-width: 38ch; }

/* grid-4 : passage net en paires sur tablette (évite l'orphelin « 3+1 ») */
@media (max-width: 960px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 460px) { .grid-4 { grid-template-columns: 1fr; } }

@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}