/* ==========================================================================
   BLH Photographie — styles.css
   Charte « L'Éditoriale » — EB Garamond + Archivo, noir & blanc.
   Inspiration : artandcommerce.com
   ========================================================================== */

:root {
  --bg: #FFFFFF;
  --bg-alt: #FAFAFA;
  --ink: #000000;
  --ink-soft: #444444;
  --ink-faint: #999999;
  --line: #E8E8E8;
  --placeholder-a: #EEEDEB;
  --placeholder-b: #DEDCD8;
  --max: 1180px;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "Inter", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

/* ---------- Typographie ---------- */

h1, h2, h3 { font-family: var(--font-serif); font-weight: 500; line-height: 1.15; }

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.35rem; }

h1 em, h2 em { font-style: italic; }

p  { max-width: 66ch; }

a  { color: var(--ink); text-decoration: none; }
a:hover { opacity: .65; }

.kicker {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.1rem;
}

.lead { font-size: 1.18rem; color: var(--ink-soft); line-height: 1.65; }

/* ---------- Layout ---------- */

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

section { padding: 5.5rem 0; }
section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  section { padding: 3.5rem 0; }
}
@media (max-width: 540px) {
  .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--ink);
}
.logo strong { font-weight: 600; }
.logo span { font-style: italic; color: var(--ink); }

.main-nav { display: flex; gap: 1.9rem; align-items: center; }
.main-nav a {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--ink);
}
.main-nav .btn {
  border-bottom: none;
  padding: 0.7rem 2.2rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; cursor: pointer; color: var(--ink); }

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 1.5rem;
    gap: 1.1rem;
  }
  .main-nav.open { display: flex; }
}

/* ---------- Boutons ---------- */

.btn {
  display: inline-block;
  background: var(--ink);
  color: #fff !important;
  font-family: var(--font-sans);
  font-size: 0.93rem;
  font-weight: 600;
  padding: 0.8rem 2.4rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  cursor: pointer;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}
.btn:hover { opacity: .8; }

.btn-ghost {
  background: transparent;
  color: var(--ink) !important;
  border: 1px solid var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: #fff !important; opacity: 1; }

/* ---------- Hero split (accueil) ---------- */

.hero-split {
  display: flex;
  align-items: stretch;
  min-height: calc(100vh - 76px);
  padding: 0;
}
.hero-split .hs-left {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 4.5rem 4rem 1.5rem;
}
@media (min-width: 1181px) {
  .hero-split .hs-left { padding-left: calc((100vw - var(--max)) / 2 + 1.5rem); max-width: none; }
}
.hero-split h1 { margin-bottom: 1.6rem; font-size: clamp(2.6rem, 4.6vw, 4.2rem); }
.hero-split .lead { margin-bottom: 2.6rem; max-width: 30rem; }
.hero-actions { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.hero-split .hs-right {
  position: relative;
  flex: none;
  height: calc(100vh - 76px);
  width: calc((100vh - 76px) * 0.8);
  max-width: 50vw;
}
.hero-split .hs-right .ph { position: absolute; inset: 0; }
.hero-split .hs-right img.hs-fade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 1.4s ease;
}
.hs-caption {
  position: absolute;
  bottom: 1.5rem; left: 1.5rem;
  z-index: 2;
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  background: #fff;
  padding: 0.55rem 0.95rem;
}
@media (max-width: 900px) {
  .hero-split { flex-direction: column; min-height: 0; }
  .hero-split .hs-left { padding: 3.5rem 1.5rem 2.5rem; }
  .hero-split .hs-right { width: 100%; max-width: none; height: auto; aspect-ratio: 4 / 5; }
}

/* ---------- Hero simple (pages 404 / merci) ---------- */

.hero { padding: 6.5rem 0 5rem; }
.hero h1 { margin-bottom: 1.4rem; }

/* ---------- Placeholders photo ---------- */

.ph {
  position: relative;
  width: 100%;
  background: linear-gradient(135deg, var(--placeholder-a), var(--placeholder-b));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ph::after {
  content: attr(data-label);
  font-family: var(--font-sans);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: center;
  padding: 1rem;
}
img.photo {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}
.ratio-45  { aspect-ratio: 4 / 5; }
.ratio-32  { aspect-ratio: 3 / 2; }
.ratio-169 { aspect-ratio: 16 / 9; }
.ratio-11  { aspect-ratio: 1 / 1; }

/* ---------- Cartes prestation ---------- */

.card {
  background: var(--bg);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease;
}
.card:hover { border-color: var(--ink); }
.card-body { padding: 1.6rem 1.6rem 1.9rem; }
.card-body h3 { margin-bottom: 0.6rem; }
.card-body p { font-size: 1rem; color: var(--ink-soft); margin-bottom: 1.1rem; line-height: 1.55; }
.card-link { font-family: var(--font-sans); font-weight: 600; font-size: 0.92rem; border-bottom: 1px solid var(--ink); padding-bottom: 1px; }
.card-link::after { content: " →"; }

/* ---------- Process / étapes ---------- */

.steps { counter-reset: step; }
.step { position: relative; padding-left: 4.2rem; margin-bottom: 2.4rem; }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0.15rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  border-top: 1px solid var(--ink);
  padding-top: 0.35rem;
}
.step h3 { margin-bottom: 0.4rem; }
.step p { color: var(--ink-soft); font-size: 1.02rem; line-height: 1.6; }

/* ---------- Listes ---------- */

.checklist { list-style: none; }
.checklist li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: 0.75rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.checklist li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink);
}
.checklist strong { color: var(--ink); font-weight: 500; }

/* ---------- FAQ ---------- */

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1.2rem 0;
}
.faq summary {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.02rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--ink); flex-shrink: 0; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 0.9rem; color: var(--ink-soft); font-size: 1.02rem; }

/* ---------- Bandeau CTA ---------- */

.cta-band { background: var(--ink); color: #fff; text-align: center; }
.cta-band h2 { color: #fff; margin-bottom: 1rem; }
.cta-band p { margin: 0 auto 2rem; color: #C9C9C9; }
.cta-band .btn { background: #fff; color: var(--ink) !important; border-color: #fff; }
.cta-band .btn:hover { opacity: .85; }

/* ---------- Logos clients ---------- */

.logos { display: flex; flex-wrap: wrap; gap: 2.2rem 4.2rem; align-items: center; justify-content: center; }
.logos figure { width: 118px; height: 44px; display: flex; align-items: center; justify-content: center; margin: 0; }
.logos img { max-width: 100%; max-height: 34px; width: auto; height: auto; filter: grayscale(1); opacity: 0.55; transition: opacity 0.3s ease; }
.logos figure:hover img { opacity: 0.9; }
@media (max-width: 640px) { .logos { gap: 1.2rem 1.6rem; } .logos figure { width: 118px; height: 44px; } .logos img { max-height: 34px; } }

/* ---------- Témoignages ---------- */

.quote { border-left: 1px solid var(--ink); padding-left: 1.8rem; }
.quote p { font-family: var(--font-serif); font-size: 1.35rem; font-style: italic; margin-bottom: 0.8rem; line-height: 1.5; }
.quote cite { font-style: normal; font-family: var(--font-sans); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); }

/* ---------- Formulaire ---------- */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
}
input, select, textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 1px solid var(--ink);
  outline-offset: -1px;
  border-color: var(--ink);
}
textarea { min-height: 140px; resize: vertical; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--ink);
  padding: 3.5rem 0 2rem;
  font-size: 1rem;
  color: var(--ink-soft);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 0.9rem;
  color: var(--ink);
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.45rem; }
.site-footer a { color: var(--ink-soft); }
.site-footer a:hover { color: var(--ink); opacity: 1; }
.footer-legal {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
}

/* ---------- Page hero (pages intérieures) ---------- */

.page-hero { padding: 5.5rem 0 3.8rem; border-bottom: 1px solid var(--line); }
.page-hero h1 { margin-bottom: 1.3rem; max-width: 20ch; }
.page-hero .lead { max-width: 56ch; }

/* ---------- Galerie ---------- */

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.gallery-loose { gap: 5rem 3.5rem; padding: 1.5rem 2.5rem; }
@media (max-width: 800px) { .gallery-loose { gap: 2.5rem 1.5rem; padding: 0; } }
.gallery-mixed { padding: 1.5rem 0; }
.gallery-mixed .mrow { display: flex; gap: 2.2rem; margin-bottom: 2.2rem; }
.gallery-mixed .mrow img { flex: 1; min-width: 0; object-fit: cover; }
.gallery-mixed .mrow.duo-45 { max-width: 66%; margin-inline: auto; }
@media (max-width: 700px) {
  .gallery-mixed .mrow { flex-direction: column; gap: 1.5rem; margin-bottom: 1.5rem; }
}

/* Galerie éditoriale — grandes images, marges généreuses, orientations mêlées */
.gallery-ed { padding: 1.5rem 0; }
.gallery-ed .erow { display: flex; gap: 4rem; margin-bottom: 4.5rem; align-items: stretch; }
.gallery-ed .erow:last-child { margin-bottom: 0; }
.gallery-ed .erow img { min-width: 0; height: auto; object-fit: cover; }
.gallery-ed .erow .ratio-45  { flex: 0.8 1 0; }
.gallery-ed .erow .ratio-32  { flex: 1.5 1 0; }
.gallery-ed .erow .ratio-169 { flex: 1.778 1 0; }
.gallery-ed .erow .ratio-11  { flex: 1 1 0; }
.gallery-ed .erow.solo { max-width: 74%; margin-inline: auto; }
@media (max-width: 700px) {
  .gallery-ed .erow { flex-direction: column; gap: 2rem; margin-bottom: 2rem; }
  .gallery-ed .erow.solo { max-width: none; }
}
@media (max-width: 800px) { .gallery { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .gallery { grid-template-columns: 1fr; } }

/* ---------- Ressources / Articles ---------- */

.res-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
@media (max-width: 900px) { .res-grid { grid-template-columns: 1fr; } }
.res-card { border: 1px solid var(--line); padding: 2.2rem; display: flex; flex-direction: column; background: #fff; }
.res-card .article-meta { margin-bottom: 0.9rem; }
.res-card h3 { margin-bottom: 0.8rem; }
.res-card p { font-size: 0.95rem; color: var(--ink-soft); flex: 1; }
.res-card .card-link { margin-top: 1.4rem; }

.article-meta { font-family: var(--font-sans); font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.18em; text-transform: uppercase; }
.article-body { max-width: 760px; }
.article-body h2 { margin: 3rem 0 1.2rem; }
.article-body h3 { margin: 2.2rem 0 0.9rem; }
.article-body p { margin-bottom: 1.15rem; }
.article-body ul, .article-body ol { margin: 0 0 1.15rem 1.3rem; }
.article-body li { margin-bottom: 0.55rem; }
.article-body table { width: 100%; border-collapse: collapse; margin: 0 0 1.3rem; font-size: 0.95rem; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 0.7rem 0.9rem; text-align: left; vertical-align: top; }
.article-body th { font-family: var(--font-sans); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }
.article-cta { border: 1px solid var(--ink); padding: 2.2rem; margin-top: 3.2rem; }
.article-cta p { margin-bottom: 1.3rem; }

/* ---------- Divers ---------- */

.center { text-align: center; }
.center p { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; } .mb-2 { margin-bottom: 2rem; } .mb-3 { margin-bottom: 3rem; }

.zone-list { columns: 2; gap: 3rem; font-size: 1rem; color: var(--ink-soft); }
@media (max-width: 640px) { .zone-list { columns: 1; } }