/*
  CBC — Construction Bois Commingeoise
  Feuille de style unique du site (pas de framework, pas de build).
  Palette et typographie reprises de l'ancien site (Joomla / JSN Mini Pro)
  pour conserver le rendu visuel actuel avec une base de code moderne.
*/

/* ===== 1. Design tokens ===== */
:root {
  /* Couleurs reprises telles quelles du site d'origine. Les boutons pleine-couleur
     utilisent un texte foncé (au lieu de blanc) pour rester lisibles (contraste AA)
     sans changer les couleurs de fond elles-mêmes — voir .btn plus bas. */
  --color-text: #445e71;
  --color-text-muted: #6b7b86;
  --color-accent: #668499;
  --color-accent-soft: #88969f;
  --color-surface: #ffffff;
  --color-surface-alt: #f5f5f5;
  --color-border: #d1d5d8;
  --color-dark: #23262a;
  --color-dark-2: #333333;
  --color-overlay: rgba(35, 38, 42, 0.7);

  --color-btn: #a6a6a6;
  --color-btn-hover: #8a8a8a;
  --color-btn-green: #6ece97;
  --color-btn-green-hover: #439968;
  --color-btn-text: #23262a;
  --color-status-success: #2f7a4f;

  /* Typographie */
  --font-body: 'Open Sans', Arial, Helvetica, sans-serif;
  --font-heading: 'PT Sans', Arial, Helvetica, sans-serif;

  /* Rythme / mise en page */
  --container-width: 1200px;
  --radius: 4px;
  --radius-pill: 100px;
  --shadow-card: 0 2px 12px rgba(35, 38, 42, 0.08);
  --transition: 0.25s ease-in-out;
}

/* ===== 2. Reset minimal ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-surface);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.6em;
  color: var(--color-dark-2);
}
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }

/* Focus visible partout : accessibilité clavier */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
/* Filet de sécurité anti-débordement horizontal mobile : par défaut un item de grille CSS
   refuse de rétrécir sous la largeur intrinsèque de son contenu (min-width:auto implicite),
   ce qui peut forcer toute la page à déborder sur petit écran. On neutralise ça sur tous nos
   conteneurs en grille. */
.card-grid > *, .gallery-grid > *, .footer-grid > *, .info-grid > *,
.latest-projects__grid > *, .welcome__grid > *, .form-row > * {
  min-width: 0;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  background: var(--color-dark-2);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  z-index: 2000;
  transition: top var(--transition);
}
.skip-link:focus { top: 8px; }

/* ===== 3. Boutons ===== */
.btn {
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 0.95em;
  font-weight: 700;
  padding: 12px 32px;
  display: inline-block;
  text-decoration: none;
  border: 0;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-btn-text) !important;
  background: var(--color-btn);
  transition: background-color var(--transition);
}
.btn:hover, .btn:focus-visible { background: var(--color-btn-hover); text-decoration: none; }
.btn-green { background: var(--color-btn-green); }
.btn-green:hover, .btn-green:focus-visible { background: var(--color-btn-green-hover); }

/* ===== 4. En-tête / navigation ===== */
/* Le fond du header est toujours sombre (texte gris clair -> blanc au survol, jamais de
   fond derrière le lien), donc la couleur du texte ne change jamais. Seul son positionnement
   change :
   - pages normales : bandeau noir plein, "position: sticky" -> il occupe sa place dans le
     flux, .page-hero qui suit n'a donc jamais besoin de compenser sa hauteur ;
   - accueil uniquement (body.has-hero) : header transparent qui flotte par-dessus la photo
     plein écran, comme sur le site d'origine, et devient noir uni au défilement
     (classe .has-bg posée par assets/js/main.js). */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #000;
}
body.has-hero .site-header {
  position: fixed;
  background: transparent;
  transition: background-color var(--transition);
}
body.has-hero .site-header.has-bg { background: #000; }
.site-header .site-logo__text { color: #fff; }
.site-header .site-logo__text span { color: rgba(255, 255, 255, 0.65); }
.site-header .nav-toggle { color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  max-width: var(--container-width);
  margin: 0 auto;
  gap: 24px;
}
.site-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.site-logo img { width: 48px; height: auto; filter: brightness(0) invert(1); }
.site-logo__text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
}
.site-logo__text span { display: block; font-weight: 400; font-size: 0.8em; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius);
  padding: 8px 12px;
  cursor: pointer;
  font-family: var(--font-body);
}

.main-nav__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.main-nav__item { position: relative; display: flex; align-items: center; }
.main-nav__link {
  display: block;
  flex: 1;
  padding: 10px 14px;
  text-decoration: none;
  color: #a6a6a6;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius);
  transition: color var(--transition);
}
.main-nav__link:hover, .main-nav__link:focus-visible, .main-nav__link[aria-current="page"] {
  color: #fff;
}
/* Bouton de dépliage du sous-menu, distinct du lien : sur mobile, le lien "Prestations"/
   "Société" continue de mener à sa page, ce petit bouton déplie juste le sous-menu.
   Sur desktop le survol suffit (:hover/:focus-within sur le <li>), donc il reste masqué. */
.main-nav__subtoggle {
  display: none;
  background: none;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  padding: 8px 12px;
  color: #a6a6a6;
}
.main-nav__subtoggle-icon {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition);
}
.main-nav__subtoggle[aria-expanded="true"] .main-nav__subtoggle-icon { transform: rotate(180deg); }
.main-nav__submenu {
  list-style: none;
  margin: 0;
  padding: 15px 0;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #222;
  display: none;
  z-index: 1100;
}
.main-nav__item:hover > .main-nav__submenu,
.main-nav__item:focus-within > .main-nav__submenu {
  display: block;
}
.main-nav__submenu .main-nav__link { padding: 8px 20px; font-size: 0.8rem; white-space: nowrap; }

.header-social {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  transition: background-color var(--transition);
}
.header-social a:hover, .header-social a:focus-visible { background: var(--color-dark-2); }
.header-social svg { width: 16px; height: 16px; fill: currentColor; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: 8px; }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; background: #000; display: none; }
  .main-nav.is-open { display: block; }
  .main-nav__list { flex-direction: column; align-items: stretch; padding: 12px; gap: 0; }
  /* .main-nav__item est un conteneur flex (lien + bouton ▾) : sans flex-wrap, le sous-menu
     devenu position:static ci-dessous devient un 3e élément flex et se retrouve à droite du
     bouton au lieu de passer à la ligne. flex-basis:100% force le sous-menu sur sa propre ligne. */
  .main-nav__item { flex-wrap: wrap; }
  .main-nav__submenu { position: static; flex-basis: 100%; display: none; box-shadow: none; padding-left: 24px; margin-top: 4px; }
  .main-nav__item:hover > .main-nav__submenu, .main-nav__item:focus-within > .main-nav__submenu { display: none; }
  .main-nav__item.is-open > .main-nav__submenu { display: block; }
  .main-nav__subtoggle { display: inline-flex; align-items: center; justify-content: center; }
  .header-social { display: none; }
  /* Le header est en position:fixed et flotte par-dessus le bandeau de titre : sans marge,
     le H1 se retrouve collé dessous. */
}

/* ===== 5. Hero / slider ===== */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  min-height: 60vh;
}
.hero__slides {
  position: relative;
  height: 100vh;
  height: 100svh; /* évite le redimensionnement au défilement sur mobile (barre d'adresse) */
  min-height: 480px;
  max-height: 960px;
}
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.9s ease-in-out;
}
.hero__slide.is-active { opacity: 1; }
.hero__slide img { width: 100%; height: 100%; object-fit: cover; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}
.hero__content {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  pointer-events: none; /* laisse les clics traverser vers les flèches/dots en dessous */
}
.hero__content > * { pointer-events: auto; }
.hero__mark { width: 90px; height: 90px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.hero__content h1 {
  color: #fff;
  margin: 0;
  font-weight: 400;
}
.hero__title {
  display: block;
  text-transform: uppercase;
  letter-spacing: 4px;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
}
.hero__desc {
  display: block;
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: clamp(1rem, 2vw, 1.2rem);
  opacity: 0.85;
  margin-top: 4px;
}
.hero__scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
}
.hero__controls {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  transform: translateY(-50%);
}
.hero__arrow {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.6);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}
.hero__arrow:hover { background: rgba(255,255,255,0.3); }
.hero__dots {
  position: absolute;
  z-index: 2;
  bottom: 24px;
  right: 24px;
  display: flex;
  gap: 8px;
}
.hero__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: 0; cursor: pointer; padding: 0;
}
.hero__dot.is-active { background: #fff; }

@media (max-width: 600px) {
  /* Les flèches vertically-centrées chevauchent le titre sur petit écran :
     on les redescend à côté des puces plutôt que de les superposer au H1. */
  .hero__controls {
    top: auto;
    bottom: 20px;
    transform: none;
    justify-content: flex-start;
    gap: 10px;
    width: auto;
    left: 20px;
    right: auto;
    padding: 0;
  }
  .hero__arrow { width: 36px; height: 36px; font-size: 1rem; }
  .hero__dots { right: auto; left: 20px; bottom: 68px; }
}

/* ===== 6. Section "Bienvenue" ===== */
.welcome {
  background: var(--color-surface-alt);
  padding: 80px 0;
}
.welcome__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.welcome__grid img { border-radius: var(--radius); box-shadow: var(--shadow-card); }
.welcome h2 {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 1.7rem;
}
.welcome p {
  color: var(--color-text-muted);
  line-height: 2;
}
.welcome__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
@media (max-width: 800px) {
  .welcome__grid { grid-template-columns: 1fr; }
}

/* ===== 7. Onglets services ===== */
.services-tabs { padding-top: 64px; padding-bottom: 64px; }
.services-tabs__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 24px;
  border-bottom: 2px solid var(--color-border);
}
.services-tabs__tab {
  background: none;
  border: 0;
  padding: 12px 20px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}
.services-tabs__tab.is-active, .services-tabs__tab:hover, .services-tabs__tab:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.services-tabs__panel { display: none; }
.services-tabs__panel.is-active { display: block; }
.services-tabs__panel h3 { margin-bottom: 0.4em; }
.services-tabs__panel p { color: var(--color-text-muted); }

/* ===== 8. Dernières réalisations ===== */
.latest-projects__heading {
  background: var(--color-dark-2);
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 5px;
  font-size: 1.5rem;
  padding: 40px 24px;
  margin: 0;
}
.latest-projects__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.latest-projects__item { position: relative; overflow: hidden; }
.latest-projects__item a { display: block; }
.latest-projects__item img { transition: transform var(--transition); width: 100%; aspect-ratio: 640 / 440; object-fit: cover; }
.latest-projects__item a:hover img, .latest-projects__item a:focus-visible img { transform: scale(1.06); }
@media (max-width: 800px) {
  .latest-projects__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 9. Contenu générique de page (sous-pages) ===== */
.page-hero {
  background: var(--color-dark-2);
  color: #fff;
  padding: 48px 24px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-hero h1 { color: #fff; margin: 0; text-transform: uppercase; letter-spacing: 3px; font-size: 1.5rem; }
.page-content { padding-top: 56px; padding-bottom: 56px; }
.page-content h2 { color: var(--color-accent); font-size: 1.4rem; margin-top: 1.6em; }
.page-content h2:first-child { margin-top: 0; }
.page-content .lede { font-size: 1.15rem; color: var(--color-text-muted); }
.page-content .cta-row { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Cartes (listing prestations / société) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin: 32px 0;
}
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover, .card:focus-visible { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(35,38,42,0.14); }
.card img { aspect-ratio: 4 / 3; object-fit: cover; }
.card__body { padding: 20px; }
.card__body h3 { margin: 0 0 8px; color: var(--color-dark-2); }
.card__body p { color: var(--color-text-muted); margin: 0; font-size: 0.95rem; }

/* Galerie réalisations + filtres */
.filter-bar {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 32px;
}
.filter-bar button {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text);
}
.filter-bar button.is-active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.gallery-grid figure { margin: 0; position: relative; }
.gallery-grid button.gallery-open {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  cursor: zoom-in;
  background: none;
}
.gallery-grid img { aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); }
.gallery-grid figcaption { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 6px; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(15, 17, 19, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  padding: 24px;
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: 90vw; max-height: 80vh; border-radius: var(--radius); }
.lightbox__caption { color: #fff; text-align: center; margin-top: 12px; }
.lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: 0;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}
.lightbox__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
  width: 48px; height: 48px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.3rem;
}
.lightbox__arrow--prev { left: 20px; }
.lightbox__arrow--next { right: 20px; }

/* Infos pratiques (contact) */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.info-card {
  background: var(--color-surface-alt);
  border-radius: var(--radius);
  padding: 20px;
}
.info-card h3 {
  display: flex; align-items: center; gap: 8px;
  font-size: 1rem; text-transform: uppercase; letter-spacing: 1px;
  color: var(--color-dark-2); margin-bottom: 12px;
}
.info-card a { color: var(--color-text); text-decoration: none; }
.info-card a:hover { color: var(--color-accent); }
.info-card p { margin: 0 0 4px; }
.map-embed { border-radius: var(--radius); overflow: hidden; margin-top: 32px; }
.map-embed iframe { width: 100%; height: 360px; border: 0; display: block; }

/* Formulaire de contact */
.contact-form { max-width: 640px; margin-top: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; color: var(--color-dark-2); font-size: 0.95rem; }
.form-group input, .form-group textarea, .form-group select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: 0.85rem; color: var(--color-text-muted); }
.form-status { margin-top: 16px; font-weight: 600; }
.form-status[data-state="success"] { color: var(--color-status-success); }
.form-status[data-state="error"] { color: #c0392b; }
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

/* Texte long (mentions légales, présentation…) */
.prose h2 { color: var(--color-dark-2); }
.prose ul { color: var(--color-text-muted); }

/* ===== 10. Pied de page ===== */
.site-footer {
  background: #000;
  color: #cdd2d5;
  padding: 56px 0 24px;
  margin-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
}
.footer-grid h3 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: #cdd2d5; text-decoration: none; }
.footer-grid a:hover { color: #fff; }
.site-footer__bottom {
  max-width: var(--container-width);
  margin: 40px auto 0;
  padding: 20px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.85rem;
  color: #9aa1a5;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}