/* ============================================================
   LaoBuild — L'art de bâtir en tradition
   Design system : ad.handmade / ui.flat / lay.editorial-grid
   / col.earthy / typ.editorial-serif / mot.scroll-driven
   ============================================================ */

:root {
  --c-ink: #2b2118;
  --c-stone: #b08d57;
  --c-clay: #a34a2a;
  --c-cream: #f2ebde;
  --c-sand: #e5d9c3;
  --c-paper: #fbf8f2;
  --c-ink-soft: rgba(43, 33, 24, 0.72);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "DM Sans", system-ui, sans-serif;
  background-color: var(--c-cream);
  color: var(--c-ink);
}

h1, h2, h3, .font-display {
  font-family: "Gloock", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* ---- Typo utilitaire ---- */
.overline {
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-clay);
}

/* ---- Boutons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border: 1px solid var(--c-ink);
  background: var(--c-ink);
  color: var(--c-cream);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.btn:hover {
  background: var(--c-clay);
  border-color: var(--c-clay);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--c-clay);
  border-color: var(--c-clay);
}
.btn-accent:hover {
  background: var(--c-ink);
  border-color: var(--c-ink);
}
.btn-outline {
  background: transparent;
  color: var(--c-ink);
}
.btn-outline:hover {
  background: var(--c-ink);
  color: var(--c-cream);
}
.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
}

/* ---- Header ---- */
.site-header {
  background: var(--c-cream);
  border-bottom: 1px solid rgba(43, 33, 24, 0.12);
  position: sticky;
  top: 0;
  z-index: 50;
}
.brand-name {
  font-family: "Gloock", Georgia, serif;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.02em;
}
.brand-tagline {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-stone);
  margin-top: 0.25rem;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--c-ink);
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.nav-link:hover,
.nav-link[aria-current="page"] {
  border-color: var(--c-clay);
  color: var(--c-clay);
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 0;
  min-width: 19rem;
  background: var(--c-paper);
  border: 1px solid rgba(43, 33, 24, 0.15);
  box-shadow: 0 12px 28px rgba(43, 33, 24, 0.12);
  padding: 0.5rem 0;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu,
.dropdown.is-open .dropdown-menu {
  display: block;
}
.dropdown-menu a {
  display: block;
  padding: 0.55rem 1.1rem;
  font-size: 0.92rem;
  color: var(--c-ink);
}
.dropdown-menu a:hover {
  background: var(--c-sand);
  color: var(--c-clay);
}

/* ---- Mobile menu ---- */
.mobile-menu a {
  display: block;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(43, 33, 24, 0.1);
  font-weight: 500;
}
.mobile-sub a {
  font-size: 0.92rem;
  color: var(--c-ink-soft);
  padding: 0.45rem 0 0.45rem 1rem;
  border-bottom: none;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  overflow: hidden;
}
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(43, 33, 24, 0.78) 0%, rgba(43, 33, 24, 0.35) 55%, rgba(43, 33, 24, 0.05) 100%);
}
.hero-inner {
  position: relative;
  min-height: calc(100svh - 5rem);
  display: flex;
  align-items: center;
}
.hero-condensed .hero-inner {
  min-height: 56svh;
}

/* ---- Sections ---- */
.section-sand {
  background: var(--c-sand);
}
.section-paper {
  background: var(--c-paper);
}
.rule {
  height: 2px;
  width: 3.5rem;
  background: var(--c-clay);
}
.rule-wide {
  width: 6rem;
}

/* ---- Images / figures ---- */
.media-frame {
  border: 1px solid rgba(43, 33, 24, 0.14);
  overflow: hidden;
}
.media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.media-frame:hover img {
  transform: scale(1.03);
}

/* ---- Révélation au scroll ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---- Formulaires ---- */
.form-field {
  display: block;
  width: 100%;
  background: var(--c-paper);
  border: 1px solid rgba(43, 33, 24, 0.35);
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  color: var(--c-ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-field:focus {
  outline: none;
  border-color: var(--c-clay);
  box-shadow: 0 0 0 3px rgba(163, 74, 42, 0.18);
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.form-note {
  font-size: 0.85rem;
  color: var(--c-ink-soft);
}
.form-success {
  display: none;
  border: 1px solid rgba(43, 33, 24, 0.2);
  background: var(--c-sand);
  padding: 1rem 1.25rem;
  font-weight: 500;
}
form.is-sent .form-success { display: block; }
form.is-sent .form-grid { display: none; }

/* ---- Footer ---- */
.site-footer {
  background: var(--c-ink);
  color: var(--c-cream);
}
.site-footer a {
  color: var(--c-cream);
  opacity: 0.85;
  transition: opacity 0.2s ease, color 0.2s ease;
}
.site-footer a:hover {
  opacity: 1;
  color: var(--c-stone);
}
.footer-bottom {
  border-top: 1px solid rgba(242, 235, 222, 0.18);
  font-size: 0.85rem;
  color: rgba(242, 235, 222, 0.65);
}

/* ---- Divers ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-clay);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}