/* ==========================================================================
   Mise en page : conteneurs, sections, grilles, utilitaires typographiques
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: 92rem; }

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight  { padding-block: calc(var(--section-y) * 0.6); }
.section--flush-top    { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }

.section--sand  { background: var(--sand); }
.section--paper { background: var(--paper); }

.section--dark {
  background: var(--ink);
  color: var(--ivory);
  --line: var(--line-invert);
  --line-strong: color-mix(in srgb, #fff 30%, transparent);
  --ink-400: color-mix(in srgb, #fff 55%, transparent);
  --ink-600: color-mix(in srgb, #fff 72%, transparent);
}

.section__head {
  display: grid;
  gap: clamp(0.9rem, 0.6rem + 1vw, 1.5rem);
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 1.8rem + 3vw, 4.5rem);
}

.section__head--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

.section__head--wide { max-width: 60rem; }

/* --- Grilles --------------------------------------------------------------- */
.grid {
  display: grid;
  gap: clamp(1.25rem, 0.9rem + 1.6vw, 2.5rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.grid--split {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 1rem + 5vw, 5.5rem);
}

.grid--split-wide { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); }
.grid--aside      { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); }

@media (max-width: 63.99em) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 47.99em) {
  .grid--2, .grid--3, .grid--split, .grid--split-wide, .grid--aside {
    grid-template-columns: minmax(0, 1fr);
  }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .order-first-mobile { order: -1; }
}

/* Colonnes façon mosaïque : indispensable pour les planches avant/après dont
   les hauteurs varient beaucoup d'une photo à l'autre. */
.masonry {
  columns: var(--cols, 3);
  column-gap: clamp(1.25rem, 0.9rem + 1.6vw, 2.5rem);
}

.masonry > * {
  break-inside: avoid;
  margin-bottom: clamp(1.5rem, 1rem + 1.8vw, 2.75rem);
}

.masonry--2 { --cols: 2; }

@media (max-width: 63.99em) {
  .masonry { --cols: 2; }
}

@media (max-width: 47.99em) {
  .masonry { --cols: 1; }
}

.stack {
  display: grid;
  gap: clamp(1rem, 0.7rem + 1vw, 1.6rem);
  align-content: start;
  justify-items: start;
}

.stack--center { justify-items: center; text-align: center; }

/* --- Typographie utilitaire ----------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--ink-400);
}

.eyebrow::before {
  content: "";
  width: 2.2rem;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.eyebrow--bare::before { display: none; }
.eyebrow--accent { color: var(--champagne); }

.section__head--center .eyebrow::before { display: none; }

.display {
  font-family: var(--font-display);
  font-size: var(--step-5);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.title-xl { font-size: var(--step-4); }
.title-lg { font-size: var(--step-3); }
.title-md { font-size: var(--step-2); }

.lede {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--ink-600);
  font-weight: 300;
  max-width: 40ch;
}

.lede--wide { max-width: 56ch; }

.prose {
  display: grid;
  gap: 1.15em;
  color: var(--ink-600);
  max-width: 62ch;
}

.prose strong { color: var(--on-surface); font-weight: 500; }

.serif-quote {
  font-family: var(--font-serif);
  font-size: var(--step-3);
  line-height: 1.25;
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.01em;
}

.accent { color: var(--champagne); }

.emph {
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 400;
}

.muted { color: var(--ink-400); }

.text-center { text-align: center; }

.mark {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Mot souligné d'un trait fin, façon annotation manuscrite */
.underlined {
  position: relative;
  white-space: nowrap;
}

.underlined::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.06em;
  height: 1px;
  background: var(--champagne);
  transform: scaleX(var(--underline-scale, 1));
  transform-origin: left;
}

/* --- Révélation au défilement --------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.9s var(--ease) var(--reveal-delay, 0s),
    transform 0.9s var(--ease) var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}