/* ============================================================
   Ciel en Couleurs - Reset léger, base & typographie
   ============================================================ */

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

* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--c-encre);
  background: var(--c-rose-poudre);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

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

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

::selection { background: var(--c-rose-fane); color: #fff; }

/* --- Typographie ------------------------------------------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 380;
  line-height: var(--lh-tight);
  letter-spacing: -.01em;
  font-optical-sizing: auto;
}

.display-1 { font-size: var(--fs-h1); }
.display-2 { font-size: var(--fs-h2); }
.display-3 { font-size: var(--fs-h3); font-weight: 420; }

/* Accent italique façon « the New Romantics » */
.ital {
  font-style: italic;
  font-weight: 340;
}

.lead {
  font-size: var(--fs-lead);
  color: var(--c-encre-70);
  line-height: 1.5;
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--ls-caps);
  font-weight: 600;
  color: var(--c-rose-fane);
}

p { max-width: var(--maxw-text); }

/* --- Layout utilitaires ------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--space-section); }

.bg-ivoire { background: var(--c-ivoire); }
.bg-encre  { background: var(--c-encre); color: var(--c-ivoire); }

.center { text-align: center; }

/* --- Le trait prisme (élément signature) ------------------- */
.prisme-line {
  height: 2px;
  width: clamp(90px, 18vw, 180px);
  border: 0;
  border-radius: 2px;
  background: var(--prisme);
  opacity: .95;
}
.prisme-line.is-center { margin-inline: auto; }

/* --- Boutons ----------------------------------------------- */
.btn {
  --btn-bg: var(--c-encre);
  --btn-fg: var(--c-ivoire);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  padding: .95em 1.7em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 0;
  border-radius: 100px;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--c-encre);
  border: 1px solid var(--c-line);
}
.btn--ghost:hover { box-shadow: none; border-color: var(--c-encre); }

/* Bouton d'envoi : soulignement prisme (accent signature) */
.btn--prisme::after {
  content: "";
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: -7px;
  height: 2px;
  border-radius: 2px;
  background: var(--prisme);
  opacity: 0;
  transform: scaleX(.4);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn--prisme:hover::after { opacity: 1; transform: scaleX(1); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  font-weight: 600;
  font-size: .95rem;
  color: var(--c-encre);
}
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* --- Révélations au scroll --------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}