/* =============================================================
 * Laltitude.fr — feuille de style
 * Vanilla CSS, mobile-first. Pas de framework.
 * ============================================================= */

:root {
  --bleu-sommet:   #1e4e72;   /* bleu alpin profond */
  --bleu-ciel:     #5b9bd1;
  --vert-prairie:  #4a7c4f;
  --gris-roc:      #6b6f76;
  --gris-clair:    #eef1f4;
  --beige-papier:  #faf7f2;
  --blanc:         #ffffff;
  --noir:          #1a1d22;
  --rouge:         #b53b3b;
  --vert-ok:       #2e7a3a;

  --radius:        6px;
  --shadow:        0 1px 3px rgba(20, 40, 60, .08), 0 2px 12px rgba(20, 40, 60, .04);
  --shadow-hover:  0 3px 8px rgba(20, 40, 60, .15), 0 6px 20px rgba(20, 40, 60, .08);

  --font-sans:     -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono:     ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--noir);
  background: var(--beige-papier);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--bleu-sommet);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

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

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--gris-roc); }
.small { font-size: .88em; }
.num   { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(180deg, var(--bleu-sommet) 0%, #2a5d83 100%);
  color: var(--blanc);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  flex-wrap: wrap;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--blanc);
  font-weight: 700;
  font-size: 22px;
  text-decoration: none;
}
.logo:hover { text-decoration: none; opacity: .9; }
.logo-mark {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}
.logo-mark-svg {
  width: 36px;
  height: auto;
  display: block;
}
.logo-tld { color: #aacde6; font-weight: 500; }

.main-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
}
.main-nav a {
  color: var(--blanc);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius);
}
.main-nav a:hover {
  background: rgba(255,255,255,.12);
  text-decoration: none;
}

/* ---------- Recherche ---------- */
.search {
  position: relative;
  flex: 1 1 280px;
  max-width: 460px;
}
.search input[type="search"] {
  width: 100%;
  padding: 9px 14px;
  border: 0;
  border-radius: 999px;
  font-size: 15px;
  background: rgba(255,255,255,.95);
  color: var(--noir);
  box-shadow: inset 0 1px 2px rgba(0,0,0,.1);
}
.search input[type="search"]:focus {
  outline: 2px solid var(--bleu-ciel);
  outline-offset: 1px;
}
.search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  list-style: none;
  margin: 0;
  padding: 4px 0;
  background: var(--blanc);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  max-height: 360px;
  overflow-y: auto;
  z-index: 50;
}
.search-results li { margin: 0; }
.search-results a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  color: var(--noir);
}
.search-results a:hover,
.search-results a.is-active {
  background: var(--gris-clair);
  text-decoration: none;
}
.search-results .sr-type {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-roc);
  background: var(--gris-clair);
  padding: 1px 6px;
  border-radius: 3px;
}
.search-results .sr-alt {
  margin-left: auto;
  color: var(--gris-roc);
  font-variant-numeric: tabular-nums;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb { padding: 12px 16px; font-size: 14px; }
.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: 6px;
  color: var(--gris-roc);
}

/* ---------- Main ---------- */
.main { padding: 16px 16px 48px; }

.hero {
  padding: 36px 0 8px;
}
.hero-small { padding: 24px 0 4px; }
.hero h1 {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.2;
  margin: 0 0 8px;
  color: var(--bleu-sommet);
}
.hero .lead {
  font-size: 17px;
  color: var(--gris-roc);
  max-width: 720px;
  margin: 0 0 16px;
}

.kpis {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 15px;
}
.kpis strong {
  color: var(--bleu-sommet);
  font-size: 18px;
}

/* ---------- Blocks ---------- */
.block { padding: 28px 0; border-top: 1px solid #e3e7ec; }
.block:first-of-type { border-top: 0; }
.block h2 {
  font-size: 22px;
  margin: 0 0 16px;
  color: var(--bleu-sommet);
}
.empty {
  padding: 18px;
  background: var(--blanc);
  border: 1px dashed #cfd5dd;
  border-radius: var(--radius);
  color: var(--gris-roc);
}

/* ---------- Grids ---------- */
.grid-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.grid-list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--blanc);
  border: 1px solid #e3e7ec;
  border-radius: var(--radius);
  color: var(--noir);
  transition: box-shadow .15s, transform .15s, border-color .15s;
}
.grid-list a:hover {
  text-decoration: none;
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
  border-color: var(--bleu-ciel);
}
.grid-item-meta {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--gris-roc);
}
.grid-item-title {
  font-weight: 600;
  font-size: 16px;
  color: var(--bleu-sommet);
}

/* ---------- Tables ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--blanc);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 15px;
}
.table th,
.table td {
  padding: 9px 14px;
  text-align: left;
  border-bottom: 1px solid #ebeef2;
}
.table thead th {
  background: #f3f5f8;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-roc);
}
.table tbody tr:hover { background: #fafbfd; }
.table tbody tr:last-child td { border-bottom: 0; }
.table .num { white-space: nowrap; }

.tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  flex-wrap: wrap;
}
.tools input[type="search"] {
  flex: 1 1 240px;
  max-width: 360px;
  padding: 8px 12px;
  border: 1px solid #cfd5dd;
  border-radius: var(--radius);
  font-size: 15px;
  background: var(--blanc);
}
.tools input[type="search"]:focus {
  outline: 2px solid var(--bleu-ciel);
  outline-offset: 1px;
  border-color: var(--bleu-ciel);
}

/* ---------- Page ville ---------- */
.ville-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
}
.ville-info {
  background: var(--blanc);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.ville-info h2,
.ville-info h3 {
  margin: 16px 0 6px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-roc);
}
.ville-info h2:first-child { margin-top: 0; }
.ville-info p { margin: 0 0 4px; }
.big-number {
  font-size: 38px !important;
  font-weight: 700;
  color: var(--bleu-sommet);
  line-height: 1;
  margin: 0 !important;
}
.ville-info code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--gris-clair);
  padding: 2px 6px;
  border-radius: 3px;
}

.ville-map h2 {
  margin: 0 0 12px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gris-roc);
}
.leaflet-map {
  width: 100%;
  height: 460px;
  background: var(--gris-clair);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  /* Confine le stacking context de Leaflet (panes à z-index 200-700)
     sous celui du header sticky (z-index 100 du .site-header).
     Sans ça, les popups/markers passent au-dessus du header au scroll. */
  position: relative;
  z-index: 0;
  isolation: isolate;
}
/* Leaflet ajoute la classe .leaflet-container une fois la carte initialisée */
.leaflet-container {
  z-index: 0 !important;
}

/* ---------- AdSense ---------- */
.ad-block {
  display: block;
  margin: 28px auto;
  text-align: center;
  max-width: 100%;
  overflow: hidden;
}
.ad-block::before {
  content: "Publicité";
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gris-roc);
  margin-bottom: 6px;
  opacity: .8;
}
/* Réserve de hauteur minimale pour limiter les Cumulative Layout Shifts (CLS)
   en attendant le rendu de l'annonce. */
.ad-display   { min-height: 110px; }
.ad-multiplex { min-height: 280px; }
.ad-block ins { display: block; }

/* ---------- Crédit OSM sous la carte ---------- */
.osm-credit-map {
  margin: 12px 0 0;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--gris-roc);
  background: var(--blanc);
  border-left: 3px solid var(--vert-prairie);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.osm-credit-map strong { color: var(--noir); }
.osm-credit-map em     { font-style: italic; opacity: .85; }

/* ---------- Voisinages (montagnes + villes proches) ---------- */
.neighbours-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.neighbours-grid h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.contact-block {
  background: var(--blanc);
  padding: 22px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.contact-block h2 {
  margin: 0 0 14px;
  color: var(--bleu-sommet);
  font-size: 20px;
}
.contact-block h3 {
  margin: 16px 0 4px;
  font-size: 15px;
  color: var(--bleu-sommet);
}
.contact-block address {
  font-style: normal;
  line-height: 1.5;
}
.legal-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
}
.legal-list li { padding: 2px 0; }

.contact-form {
  background: var(--blanc);
  padding: 22px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 720px;
}
.form-row { margin-bottom: 14px; }
.form-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 14px;
}
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid #cfd5dd;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 15px;
  background: var(--blanc);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid var(--bleu-ciel);
  outline-offset: 1px;
  border-color: var(--bleu-ciel);
}
.form-row textarea { resize: vertical; min-height: 140px; }

.hp-field {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

.btn,
.btn-primary {
  display: inline-block;
  padding: 10px 22px;
  background: var(--bleu-sommet);
  color: var(--blanc);
  border: 0;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
  text-decoration: none;
}
.btn:hover,
.btn-primary:hover {
  background: #163a55;
  text-decoration: none;
}
.btn-link {
  color: var(--bleu-sommet);
  font-weight: 500;
}

.alert {
  padding: 12px 16px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  border: 1px solid;
}
.alert-success { background: #e8f5ec; border-color: #b8dec3; color: var(--vert-ok); }
.alert-error   { background: #fbebeb; border-color: #f0c2c2; color: var(--rouge); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--noir);
  color: #cdd2da;
  margin-top: 48px;
  padding: 36px 0 16px;
}
.site-footer a { color: #aacde6; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid #333740;
}
.site-footer h3 {
  color: var(--blanc);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 0 0 10px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
}
.site-footer ul li { padding: 2px 0; }
.osm-credit {
  margin-top: 18px;
  padding: 12px 16px;
  font-size: 13px;
  color: #cdd2da;
  background: #232830;
  border-radius: var(--radius);
  border-left: 3px solid var(--vert-prairie);
}
.copyright {
  margin-top: 16px;
  font-size: 13px;
  color: #8b8f99;
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .header-inner { flex-direction: column; align-items: stretch; }
  .main-nav { margin-left: 0; justify-content: flex-end; }
  .ville-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .neighbours-grid { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .hero { padding-top: 22px; }
  .hero h1 { font-size: 24px; }
  .kpis { gap: 14px; font-size: 14px; }
  .leaflet-map { height: 320px; }
  .table th, .table td { padding: 7px 10px; font-size: 14px; }
  .grid-list { grid-template-columns: 1fr 1fr; }
}