/* katec3 — « Partenaire des communes » : vert profond, serif Fraunces, éditorial */
:root {
  --vert: #143d2b;
  --vert-2: #0e2d20;
  --herbe: #b9d66b;
  --blanc: #fbfbf8;
  --encre: #1c2420;
  --gris: #5f6a64;
  --ligne: #d7ddd6;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Public Sans", system-ui, sans-serif;
  --max: 1160px;
  --pad: clamp(1.25rem, 4vw, 3rem);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--blanc); color: var(--encre); font-family: var(--sans); font-size: 1.05rem; line-height: 1.6; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; margin: 0; line-height: 1.08; letter-spacing: -.01em; }
h2 { font-size: clamp(2rem, 3.6vw, 3rem); color: var(--vert); }
h3 { font-size: 1.45rem; }
:focus-visible { outline: 3px solid var(--herbe); outline-offset: 3px; }

.masthead { text-align: center; padding: 2rem var(--pad) 1.25rem; border-bottom: 1px solid var(--ligne); }
.wordmark { font-family: var(--serif); font-weight: 700; font-size: 2.6rem; color: var(--vert); text-decoration: none; letter-spacing: .04em; }
.baseline { color: var(--gris); font-size: .95rem; margin-top: .2rem; }
.masthead nav { display: flex; justify-content: center; gap: 2rem; margin-top: 1.25rem; flex-wrap: wrap; }
.masthead nav a { text-decoration: none; font-weight: 600; font-size: .95rem; }
.masthead nav a:hover { color: var(--vert); text-decoration: underline; text-underline-offset: 4px; }

.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; align-items: center; max-width: var(--max); margin: 0 auto; padding: 4rem var(--pad); }
.hero h1 { font-size: clamp(2.1rem, 3.8vw, 3.4rem); color: var(--vert); }
.hero p { margin-top: 1.5rem; max-width: 52ch; color: #2e3a34; }
.btn { display: inline-block; margin-top: 1.75rem; background: var(--vert); color: var(--blanc); text-decoration: none; font-weight: 600; padding: .85rem 1.5rem; border-radius: 999px; }
.btn:hover { background: var(--vert-2); }
.hero-img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 20px; }

.audiences { background: var(--vert); color: var(--blanc); padding: 5rem var(--pad); }
.audiences h2 { color: var(--herbe); max-width: var(--max); margin: 0 auto 2.5rem; }
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; max-width: var(--max); margin: 0 auto; }
.cols article { border-top: 1px solid rgba(251,251,248,.35); padding-top: 1.25rem; }
.cols h3 { color: var(--blanc); }
.cols p { margin-top: .75rem; color: rgba(251,251,248,.85); }

.services { max-width: var(--max); margin: 0 auto; padding: 5rem var(--pad); }
.services-head { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: end; margin-bottom: 2.5rem; }
.services-head p { color: var(--gris); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 3rem; margin: 0; }
.service-grid div { display: grid; grid-template-columns: 11rem 1fr; gap: 1rem; padding: 1rem 0; border-top: 1px solid var(--ligne); }
.service-grid dt { font-family: var(--serif); font-weight: 700; font-size: 1.2rem; color: var(--vert); }
.service-grid dd { margin: 0; color: #2e3a34; }

.band img { width: 100%; aspect-ratio: 21 / 8; object-fit: cover; }

.history { max-width: var(--max); margin: 0 auto; padding: 5rem var(--pad); }
.timeline { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; position: relative; }
.timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 2.9rem; height: 1px; background: var(--vert); }
.timeline li { position: relative; padding-top: 4rem; }
.timeline li::before { content: ""; position: absolute; left: 0; top: 2.55rem; width: 12px; height: 12px; border-radius: 50%; background: var(--vert); }
.timeline time { position: absolute; top: 0; left: 0; font-family: var(--serif); font-size: 1.8rem; font-weight: 500; font-style: italic; color: var(--vert); }
.timeline p { margin-top: .5rem; color: #2e3a34; }

.contact { background: var(--vert-2); color: var(--blanc); padding: 5rem var(--pad); }
.contact-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact h2 { color: var(--herbe); }
.contact p { margin-top: 1rem; }
.contact address { font-style: normal; }
.contact address p:first-child { margin-top: 0; font-family: var(--serif); font-size: 2rem; line-height: 1.15; }
.contact address a { text-decoration: none; }
.contact address a:hover { text-decoration: underline; text-underline-offset: 4px; }

footer { padding: 2rem var(--pad); font-size: .85rem; color: var(--gris); text-align: center; line-height: 1.6; max-width: 70rem; margin: 0 auto; }

@media (max-width: 900px) {
  .hero, .contact-grid, .services-head { grid-template-columns: 1fr; }
  .hero-img { aspect-ratio: 16 / 10; }
  .cols, .timeline, .service-grid { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .service-grid div { grid-template-columns: 1fr; gap: .25rem; }
}