/* ──────────────────────────────────────────────────────────────
   Terrain — Walcourt · v1
   Site statique HTML + CSS, FR (NL en 2ᵉ temps)
   ────────────────────────────────────────────────────────────── */

:root {
  --bg:        #f7f3ea;
  --paper:     #ffffff;
  --ink:       #1f2620;
  --ink-soft:  #4d574e;
  --green:     #2f4a3a;
  --green-2:   #6c8b78;
  --wood:      #8a6a3b;
  --line:      #d9d1bf;
  --max:       1080px;
  --serif:     "Iowan Old Style", "Hoefler Text", "Cambria", Georgia, serif;
  --sans:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a:hover { color: var(--wood); }

h1, h2, h3 {
  font-family: var(--serif);
  color: var(--green);
  letter-spacing: -0.01em;
  line-height: 1.2;
  font-weight: 600;
}
h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); margin: 0 0 .55em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 .8em; }
h3 { font-size: 1.18rem; color: var(--ink); margin: 1.6em 0 .4em; }

p { margin: 0 0 1em; }

/* ─── Nav ─── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 243, 234, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .4rem 1rem;
  padding: .65rem clamp(1rem, 4vw, 2rem);
  font-size: .92rem;
}
.site-nav .brand {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  font-size: 1rem;
}
.site-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem 1.2rem;
}
.site-nav nav a {
  color: var(--ink-soft);
  text-decoration: none;
}
.site-nav nav a:hover { color: var(--green); }

.site-nav .nav-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem 1.2rem;
}

.lang-switch {
  display: flex;
  gap: .3rem;
  align-items: center;
}
.lang-switch a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .5rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  text-decoration: none;
  color: var(--ink-soft);
  font-size: .82rem;
  line-height: 1;
  letter-spacing: .04em;
}
.lang-switch a:hover {
  color: var(--green);
  border-color: var(--green-2);
}
.lang-switch a.lang-active {
  color: var(--green);
  border-color: var(--green);
  font-weight: 600;
  background: transparent;
}
.lang-switch svg {
  width: 18px;
  height: 12px;
  display: block;
  border: 1px solid rgba(0, 0, 0, .12);
  border-radius: 1px;
  flex-shrink: 0;
}

/* ─── Hero ─── */

.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #1a1f1a;
}
.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(.78);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0) 30%,
    rgba(0,0,0,.55) 100%
  );
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: clamp(1.5rem, 5vw, 3rem) clamp(1rem, 4vw, 3rem);
  color: #fff;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}
.hero .eyebrow {
  font-size: .85rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin: 0 0 .8em;
  color: rgba(255,255,255,.85);
}
.hero h1 {
  color: #fff;
  text-shadow: 0 2px 24px rgba(0,0,0,.45);
}
.hero .tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  margin: 0;
  color: rgba(255,255,255,.95);
  text-shadow: 0 1px 12px rgba(0,0,0,.4);
}

/* ─── Sections ─── */

.content {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 2rem);
  border-bottom: 1px solid var(--line);
}
.content:last-child { border-bottom: 0; }

.prose .aside,
.aside {
  color: var(--ink-soft);
  font-size: .92rem;
  border-left: 3px solid var(--line);
  padding-left: .9rem;
}

/* ─── Key figures ─── */

.key-figures {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.key-figures li {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1rem 1.2rem;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: .15rem;
}
.key-figures strong {
  font-family: var(--serif);
  font-size: 1.55rem;
  color: var(--green);
  font-weight: 600;
}
.key-figures span {
  color: var(--ink-soft);
  font-size: .92rem;
}

/* ─── Bloc dépliable (zone de loisirs) ─── */

.explainer {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  margin: 1rem 0 1.2rem;
  overflow: hidden;
}
.explainer > summary {
  list-style: none;
  cursor: pointer;
  padding: .8rem 1rem;
  font-family: var(--serif);
  color: var(--green);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  user-select: none;
}
.explainer > summary::-webkit-details-marker { display: none; }
.explainer > summary::after {
  content: "+";
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1.3rem;
  color: var(--ink-soft);
  line-height: 1;
}
.explainer[open] > summary::after { content: "−"; }
.explainer > summary:hover { color: var(--wood); }
.explainer-body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--line);
}
.explainer-body p:first-of-type { margin-top: .9rem; }
.explainer-body ul {
  margin: .4rem 0 1rem;
  padding-left: 1.2rem;
}
.explainer-body ul li { margin-bottom: .25rem; }

/* ─── Carte (OSM) ─── */

.map-frame { margin-top: 1.2rem; }
.map-frame iframe {
  width: 100%;
  height: 420px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #eee;
}
.map-link {
  font-size: .95rem;
  margin-top: .6rem;
}

/* ─── Galerie ─── */

.gallery {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.gallery figure {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.gallery img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}
.gallery figcaption {
  font-size: .9rem;
  color: var(--ink-soft);
  padding: .65rem .85rem;
  border-top: 1px solid var(--line);
}

/* ─── Cadastre ─── */

.cadastre-fig {
  margin: 0 0 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.cadastre-fig img {
  width: 100%;
  display: block;
  height: auto;
}
.cadastre-fig figcaption {
  padding: .65rem .9rem;
  font-size: .9rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}
.parcels {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: .95rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: .85rem 1rem;
  border-radius: 4px;
  word-spacing: .25rem;
  line-height: 1.7;
}

/* ─── Offres ─── */

.offers .offers-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 0 0 1.6rem;
}
.offer-key {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.05rem 1.25rem;
}
.offer-key .label {
  margin: 0 0 .35rem;
  color: var(--ink-soft);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.offer-key .value {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--green);
  line-height: 1.3;
}
.offer-key .sub {
  color: var(--ink-soft);
  font-size: .88rem;
  font-family: var(--sans);
  font-weight: normal;
}

.contact {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  margin: .4rem 0 1rem;
}
.contact p { margin: .25rem 0; }
.todo {
  color: var(--wood);
  font-style: italic;
}

.reserves {
  color: var(--ink-soft);
  font-size: .92rem;
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

/* ─── Footer ─── */

footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 2rem) 3rem;
  font-size: .9rem;
  color: var(--ink-soft);
  text-align: center;
}
footer p { margin: .25rem 0; }
footer .legal { font-size: .82rem; opacity: .85; }

/* ─── Petits écrans ─── */

@media (max-width: 520px) {
  .hero { min-height: 80vh; }
  .gallery img { height: 220px; }
  .map-frame iframe { height: 320px; }
}

/* ─── Réduction de mouvement ─── */

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