/* =============================================================================
   Kivo — Base, reset, typographie, utilitaires
   ============================================================================= */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-800);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-title);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -.02em;
}
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
p { color: var(--text-soft); }

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }

/* Liens de saut accessibilité */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--brand); color: #fff; padding: .6rem 1rem;
  border-radius: var(--r-sm); transition: top var(--t);
}
.skip-link:focus { top: 12px; }

/* Focus visible global */
:focus-visible {
  outline: 2px solid var(--brand-2);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Conteneur */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.container-wide { max-width: 1380px; }

/* Sections */
.section { padding-block: clamp(4rem, 8vw, 7.5rem); position: relative; }
.section-light {
  background: var(--light-50);
  color: var(--ink-900);
}
.section-light p { color: var(--ink-700); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: var(--step--1); font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent);
}
.section-light .eyebrow { color: var(--brand); }
.section-head { max-width: 720px; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { margin-top: 1rem; font-size: var(--step-1); }

/* Texte en dégradé */
.grad-text {
  background: var(--brand-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.accent-text { color: var(--accent); }

/* Helpers */
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.no-scroll { overflow: hidden; }

/* Animations d'apparition (pilotées par IntersectionObserver -> .is-visible) */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }
[data-reveal-delay="4"] { transition-delay: .32s; }
[data-reveal-delay="5"] { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}