/* ============ Base ============ */
:root {
  --bg: #fbfaf8;
  --fg: #151515;
  --muted: #6b6b6b;
  --card: #ffffff;
  --line: rgba(0, 0, 0, 0.12);

  --container: 980px;
  --radius: 20px;

  --s-1: 8px;
  --s0: 12px;
  --s1: 16px;
  --s2: 24px;
  --s3: 36px;
  --s4: 56px;
  --s5: 84px;

  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
}

img {
  width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  text-decoration: underline;
}

/* Accessibilité */
.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus {
  left: 12px;
}

/* Layout */
.container {
  width: min(100% - 2 * var(--s2), var(--container));
  margin-inline: auto;
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s2);
  padding: var(--s1) 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--fg);
  opacity: 0.9;
}

.brand-name {
  font-size: 16px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-link {
  font-size: 14px;
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 999px;
}

.nav-link:hover {
  color: var(--fg);
  background: rgba(0, 0, 0, 0.04);
  text-decoration: none;
}

.nav-cta {
  color: var(--fg);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 10px 12px;
  cursor: pointer;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.burger {
  width: 22px;
  height: 14px;
  display: inline-block;
  background:
    linear-gradient(var(--fg), var(--fg)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--fg), var(--fg)) 0 6px / 100% 2px no-repeat,
    linear-gradient(var(--fg), var(--fg)) 0 12px / 100% 2px no-repeat;
  opacity: 0.85;
}

/* ============ Hero ============ */
.hero {
  padding: var(--s4) 0 var(--s3);
}

.hero-inner {
  display: grid;
  gap: var(--s2);
  align-items: start;
}

.kicker {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  font-size: 14px;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

/* ============ Content ============ */
.content {
  padding: 0 0 var(--s5);
}

.content-inner {
  display: grid;
  gap: var(--s3);
}

.prose {
  max-width: 72ch;
  font-size: clamp(16px, 1.1vw + 12px, 18px);
}

.prose p {
  margin: 0 0 var(--s2);
}
.prose p:last-child {
  margin-bottom: 0;
}

.media {
  border-radius: var(--radius);
  overflow: hidden;
  background: #eee;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.media img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.media--wide img {
  aspect-ratio: 21 / 9;
}

.media-grid {
  display: grid;
  gap: var(--s2);
  grid-template-columns: 1fr 1fr;
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: var(--s4) 0;
  background: color-mix(in srgb, var(--bg) 85%, #fff);
}

.footer-inner {
  display: grid;
  gap: var(--s3);
  grid-template-columns: 1.2fr 1fr 0.8fr;
  align-items: start;
}

.footer-title {
  margin: 0 0 10px;
  font-weight: 600;
}

.site-footer p,
.site-footer address {
  margin: 0;
  color: var(--muted);
  font-style: normal;
}

.socials {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-meta {
  grid-column: 1 / -1;
  padding-top: var(--s2);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Menu collapsible */
  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav-link {
    padding: 14px 12px;
  }

  .media-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--s3) 0 var(--s2);
  }
}