:root {
  --color-bg: #f7f5f2;
  --color-bg-accent: #fff8f3;
  --color-surface: #ffffff;
  --color-ink: #1c1a18;
  --color-muted: #5c5752;
  --color-brand: #e84830;
  --color-brand-deep: #c93a26;
  --color-accent: #f8b028;
  --color-line: rgba(28, 26, 24, 0.12);
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
    Georgia, serif;
  --font-body: "Avenir Next", "Segoe UI", "Helvetica Neue", Helvetica, sans-serif;
  --space: clamp(1rem, 2.5vw, 2rem);
  --max: 68rem;
  --focus: 0 0 0 3px var(--color-surface), 0 0 0 6px var(--color-brand);
  --motion: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  background:
    radial-gradient(120% 80% at 88% -10%, rgba(248, 176, 40, 0.18), transparent 55%),
    radial-gradient(90% 70% at -10% 20%, rgba(232, 72, 48, 0.12), transparent 50%),
    linear-gradient(180deg, var(--color-bg-accent) 0%, var(--color-bg) 42%, #efece7 100%);
}

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

a {
  color: var(--color-brand-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-brand);
}

a:focus-visible,
.button:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 0.25rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.65rem 0.9rem;
  background: var(--color-ink);
  color: var(--color-surface);
  text-decoration: none;
  border-radius: 0.35rem;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: min(100% - (var(--space) * 2), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(247, 245, 242, 0.86);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  width: clamp(8.5rem, 22vw, 11rem);
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.85rem, 3vw, 1.75rem);
}

.site-nav a {
  color: var(--color-ink);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-brand);
}

.hero {
  display: grid;
  align-items: center;
  min-height: calc(100vh - 4.5rem);
  padding-block: clamp(3.5rem, 12vh, 8rem);
}

.hero-inner {
  max-width: 42rem;
  margin-inline: auto;
  text-align: center;
}

.brand-wordmark {
  margin: 0 0 1.25rem;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  animation: rise 700ms ease both;
}

.hero h1 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 6vw, 3.55rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  animation: rise 700ms ease 80ms both;
}

.hero-lead,
.hero-support {
  margin: 1.25rem auto 0;
  max-width: 34rem;
  color: var(--color-muted);
  animation: rise 700ms ease 140ms both;
}

.hero-support {
  margin-top: 0.85rem;
  font-size: 1rem;
  animation-delay: 180ms;
}

.hero-cta {
  margin: 2rem 0 0;
  animation: rise 700ms ease 220ms both;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.35rem;
  border-radius: 999px;
  background: var(--color-brand);
  color: #fff;
  font-weight: 650;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background-color var(--motion), transform var(--motion);
}

.button:hover {
  background: var(--color-brand-deep);
  color: #fff;
  transform: translateY(-1px);
}

.contact {
  padding-block: clamp(3.5rem, 10vh, 6rem);
}

.contact-inner {
  max-width: 34rem;
  margin-inline: auto;
  text-align: center;
}

.contact h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.contact p {
  margin: 0;
  color: var(--color-muted);
}

.contact a {
  font-weight: 650;
}

.site-footer {
  padding-block: 1.5rem 2rem;
  border-top: 1px solid var(--color-line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.35rem 1.25rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  text-align: center;
}

.footer-secondary a {
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
}

.footer-secondary a:hover {
  color: var(--color-brand-deep);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

/* Hub projets (/hub/) — discrete platform directory */
.hub-main {
  padding-block: clamp(3rem, 10vh, 6rem) clamp(3.5rem, 12vh, 7rem);
}

.hub-inner {
  max-width: 46rem;
}

.hub-kicker {
  margin: 0 0 0.75rem;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hub-inner h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hub-intro {
  margin: 1rem 0 0;
  max-width: 32rem;
  color: var(--color-muted);
}

.hub-grid {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .hub-grid {
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: 1.15rem;
  }
}

.hub-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  height: 100%;
  padding: 1.25rem 1.2rem 1.15rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 0.65rem;
  color: inherit;
  text-decoration: none;
  transition:
    border-color var(--motion),
    box-shadow var(--motion),
    transform var(--motion);
}

.hub-card:hover {
  border-color: rgba(232, 72, 48, 0.35);
  box-shadow: 0 0.55rem 1.4rem rgba(28, 26, 24, 0.06);
  color: inherit;
  transform: translateY(-2px);
}

.hub-card:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.hub-card-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-ink);
}

.hub-card-domain {
  color: var(--color-muted);
  font-size: 0.88rem;
  word-break: break-word;
}

.hub-card-action {
  margin-top: auto;
  padding-top: 0.85rem;
  color: var(--color-brand-deep);
  font-size: 0.88rem;
  font-weight: 650;
}

.hub-card-action::after {
  content: " →";
}

.hub-back {
  margin: 2.5rem 0 0;
}

.hub-back a {
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.hub-back a:hover {
  color: var(--color-brand-deep);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(0.7rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 40rem) {
  .header-inner {
    min-height: 4rem;
  }

  .site-nav a {
    font-size: 0.9rem;
  }

  .hero {
    min-height: calc(100svh - 4rem);
    padding-block: 3rem 4rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}