/* ============================================================
   Conrad Masset — Photographe
   Feuille de style unique, sans framework (pas de Bootstrap/jQuery)
   ============================================================ */

:root{
  --bg: #121213;
  --bg-elevated: #1a1a1c;
  --text: #f1ede6;
  --text-dim: #b7b2a9;
  --text-faint: #8a857c;
  --accent: #d99a4e;
  --accent-soft: rgba(217,154,78,.14);
  --line: rgba(241,237,230,.12);
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --radius: 2px;
  --maxw: 1320px;
  --gap: clamp(10px, 1.6vw, 20px);
  --nav-h: 76px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html, body{ margin:0; padding:0; }
body{
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
h1,h2,h3,h4{ font-weight: 600; margin: 0 0 .5em; letter-spacing: .01em; }
p{ margin: 0 0 1em; color: var(--text-dim); }
.container{ max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 4vw, 48px); }
.visually-hidden{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
::selection{ background: var(--accent); color: #171512; }

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute; left:-999px; top:0; z-index:2000;
  background: var(--accent); color:#171512; padding:10px 16px; border-radius: var(--radius);
}
.skip-link:focus{ left: 12px; top: 12px; }

/* ---------- Header / nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 500;
  height: var(--nav-h);
  display:flex; align-items:center;
  background: rgba(18,18,19,.72);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container{ display:flex; align-items:center; justify-content:space-between; gap: 24px; width:100%; }
.brand{ display:flex; align-items:center; gap:12px; font-weight:600; font-size:1.05rem; letter-spacing:.02em; }
.brand img{ height:34px; width:auto; }
.brand small{ display:block; font-weight: 400; color: var(--text-faint); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; margin-top:2px; }

.nav-toggle{
  display:none; background:none; border:0; color: var(--text); width:44px; height:44px;
  cursor:pointer; position:relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; position:absolute; left:11px; right:11px; height:2px; background: currentColor; transition: transform .25s var(--ease), opacity .25s;
}
.nav-toggle span{ top:21px; }
.nav-toggle span::before{ top:-7px; }
.nav-toggle span::after{ top:7px; }
.nav-toggle[aria-expanded="true"] span{ background: transparent; }
.nav-toggle[aria-expanded="true"] span::before{ top:0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after{ top:0; transform: rotate(-45deg); }

.main-nav{ display:flex; align-items:center; gap: clamp(14px, 2vw, 34px); }
.main-nav a{
  font-size:.9rem; letter-spacing:.03em; color: var(--text-dim);
  padding: 8px 2px; position:relative; transition: color .2s;
}
.main-nav a::after{
  content:""; position:absolute; left:0; right:100%; bottom:2px; height:1px; background: var(--accent);
  transition: right .25s var(--ease);
}
.main-nav a:hover, .main-nav a[aria-current="page"]{ color: var(--text); }
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after{ right:0; }
.lang-switch{ display:flex; gap:8px; margin-left: 4px; padding-left: clamp(14px,2vw,34px); border-left:1px solid var(--line); }
.lang-switch a{ font-size:.78rem; text-transform:uppercase; letter-spacing:.06em; color: var(--text-faint); }
.lang-switch a[aria-current="true"]{ color: var(--accent); }

@media (max-width: 880px){
  .nav-toggle{ display:block; }
  .main-nav{
    position: fixed; inset: var(--nav-h) 0 0 0; height: calc(100dvh - var(--nav-h));
    background: var(--bg); flex-direction: column; align-items:flex-start; justify-content:flex-start;
    padding: 28px clamp(18px,6vw,48px); gap: 4px;
    transform: translateY(-8px); opacity:0; visibility:hidden; pointer-events:none;
    transition: opacity .2s, transform .2s, visibility 0s .2s;
  }
  .main-nav.is-open{ opacity:1; visibility:visible; pointer-events:auto; transform: translateY(0); transition: opacity .2s, transform .2s; }
  .main-nav a{ width:100%; padding: 14px 0; border-bottom: 1px solid var(--line); font-size:1.05rem; }
  .lang-switch{ border-left:0; padding-left:0; margin-left:0; margin-top: 10px; }
}

/* ---------- Hero ---------- */
.hero{
  position: relative; min-height: min(86vh, 820px); display:flex; align-items:flex-end;
  overflow:hidden; background: var(--bg-elevated);
}
.hero img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover; object-position: center 32%;
  opacity: .88;
}
.hero::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(18,18,19,.15) 0%, rgba(18,18,19,.15) 45%, rgba(18,18,19,.92) 100%);
}
.hero-content{ position:relative; z-index:2; padding: 0 clamp(18px,4vw,48px) clamp(40px,7vw,90px); max-width: var(--maxw); margin:0 auto; width:100%; }
.eyebrow{ display:inline-block; font-size:.78rem; letter-spacing:.16em; text-transform:uppercase; color: var(--accent); margin-bottom:14px; }
.hero h1{ font-size: clamp(2.1rem, 5.4vw, 4.2rem); line-height:1.05; max-width: 16ch; margin-bottom:.35em; }
.hero p.lead{ font-size: clamp(1rem, 1.6vw, 1.2rem); max-width: 46ch; color: var(--text-dim); }
.hero-cta{ margin-top: 26px; display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px; padding: 13px 26px; border-radius: var(--radius);
  font-size:.86rem; letter-spacing:.03em; border:1px solid transparent; cursor:pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn-primary{ background: var(--accent); color:#171512; }
.btn-primary:hover{ transform: translateY(-1px); filter: brightness(1.08); }
.btn-outline{ border-color: var(--line); color: var(--text); background: transparent; }
.btn-outline:hover{ border-color: var(--accent); color: var(--accent); }

/* ---------- Section framing ---------- */
.section{ padding: clamp(56px, 8vw, 108px) 0; }
.section-head{ max-width: 62ch; margin-bottom: clamp(28px, 4vw, 52px); }
.section-head .eyebrow{ margin-bottom: 10px; }
.section-head h2{ font-size: clamp(1.6rem, 3vw, 2.4rem); }
.section-tight{ padding-top: 0; }

/* ---------- Home: weekly photo + intro ---------- */
.feature-photo{ position:relative; aspect-ratio: 3/2; border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow); }
.feature-photo img{ width:100%; height:100%; object-fit:cover; }
@media (max-width: 640px){ .feature-photo{ aspect-ratio: 4/5; } }
.feature-caption{ margin-top:16px; color: var(--text-faint); font-size:.85rem; letter-spacing:.04em; text-transform:uppercase; }

.split{ display:grid; grid-template-columns: 1fr 1fr; gap: clamp(28px,5vw,64px); align-items:center; }
@media (max-width: 780px){ .split{ grid-template-columns:1fr; } }

.stat-row{ display:flex; gap: clamp(24px,5vw,56px); flex-wrap:wrap; margin-top: 30px; }
.stat b{ display:block; font-size: 1.9rem; color: var(--text); }
.stat span{ font-size:.78rem; letter-spacing:.06em; text-transform:uppercase; color: var(--text-faint); }

/* ---------- Album grid (gallery landing) ---------- */
.album-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--gap);
}
.album-card{
  position:relative; aspect-ratio: 4/5; border-radius: var(--radius); overflow:hidden; cursor:pointer;
  background: var(--bg-elevated); border: 1px solid var(--line);
}
.album-card img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition: transform .6s var(--ease), filter .6s var(--ease);
  filter: saturate(.92);
}
.album-card:hover img, .album-card:focus-visible img{ transform: scale(1.06); filter: saturate(1.05); }
.album-card::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,10,11,.86) 100%);
}
.album-card .album-info{ position:absolute; left:0; right:0; bottom:0; z-index:2; padding: 18px 20px; }
.album-card h3{ margin:0 0 4px; font-size:1.15rem; }
.album-card .count{ font-size:.76rem; letter-spacing:.06em; text-transform:uppercase; color: var(--text-dim); }
.album-card:focus-visible{ outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Album detail (opens inline) ---------- */
.album-panel{
  border-top: 1px solid var(--line); margin-top: clamp(40px,6vw,72px); padding-top: clamp(32px,5vw,56px);
  display:none;
}
.album-panel.is-open{ display:block; }
.album-panel-head{ display:flex; align-items:center; justify-content:space-between; gap:20px; margin-bottom: 22px; flex-wrap:wrap; }
.album-panel-head h2{ margin:0; font-size: clamp(1.4rem,2.6vw,2rem); }
.btn-close-album{ background:none; border:1px solid var(--line); color: var(--text-dim); border-radius: var(--radius); padding: 9px 16px; font-size:.82rem; cursor:pointer; }
.btn-close-album:hover{ border-color: var(--accent); color: var(--accent); }

.photo-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px;
}
.photo-grid button{
  all: unset; position:relative; display:block; cursor: zoom-in; aspect-ratio: 1/1; overflow:hidden; border-radius: var(--radius); background: var(--bg-elevated);
}
.photo-grid img{ width:100%; height:100%; object-fit:cover; transition: transform .5s var(--ease); }
.photo-grid button:hover img, .photo-grid button:focus-visible img{ transform: scale(1.08); }
.photo-grid button:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.photo-caption{
  position:absolute; left:0; right:0; bottom:0; z-index:2; padding: 20px 10px 8px;
  background: linear-gradient(180deg, transparent, rgba(10,10,11,.9) 78%);
  color: var(--text); font-size:.72rem; line-height:1.3; letter-spacing:.02em;
  opacity:0; transition: opacity .25s var(--ease); pointer-events:none;
}
.photo-grid button:hover .photo-caption, .photo-grid button:focus-visible .photo-caption{ opacity:1; }

.loading-hint{ color: var(--text-faint); font-size:.85rem; padding: 10px 0; }

/* ---------- Lightbox ---------- */
.lightbox{
  position: fixed; inset:0; z-index: 2000; background: rgba(10,10,11,.96);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transition: opacity .25s var(--ease), visibility 0s .25s;
}
.lightbox.is-open{ opacity:1; visibility:visible; transition: opacity .25s var(--ease); }
.lightbox figure{ margin:0; max-width: min(92vw, 1400px); max-height: 88vh; display:flex; flex-direction:column; align-items:center; }
.lightbox img{ max-width: 100%; max-height: 82vh; width:auto; height:auto; box-shadow: var(--shadow); border-radius: 1px; }
.lightbox figcaption{ color: var(--text-faint); font-size:.8rem; margin-top:12px; letter-spacing:.03em; }
.lightbox-btn{
  position:absolute; background: rgba(255,255,255,.06); border:1px solid var(--line); color: var(--text);
  width:46px; height:46px; border-radius:50%; cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition: background .2s, border-color .2s;
}
.lightbox-btn:hover{ background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.lightbox-close{ top: 18px; right: clamp(18px,4vw,40px); }
.lightbox-prev{ left: clamp(10px,3vw,30px); top:50%; transform: translateY(-50%); }
.lightbox-next{ right: clamp(10px,3vw,30px); top:50%; transform: translateY(-50%); }
@media (max-width: 640px){ .lightbox-prev, .lightbox-next{ width:40px; height:40px; } }

/* ---------- About page ---------- */
.about-portrait{ aspect-ratio: 4/5; border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow); }
.about-portrait img{ width:100%; height:100%; object-fit:cover; }
.about-text p{ font-size:1.05rem; }
.signature{ margin-top: 28px; font-size:.85rem; letter-spacing:.05em; color: var(--text-faint); text-transform:uppercase; }

/* ---------- Exhibitions ---------- */
.exh-block{ margin-bottom: clamp(48px,7vw,86px); }
.exh-block-head{ display:flex; align-items:center; gap:16px; margin-bottom: 20px; }
.exh-block-head img{ width:52px; height:52px; border-radius:50%; object-fit:cover; border:1px solid var(--line); }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: clamp(30px,5vw,72px); }
@media (max-width: 780px){ .contact-grid{ grid-template-columns:1fr; } }
.field{ margin-bottom: 18px; }
.field label{ display:block; font-size:.8rem; letter-spacing:.04em; text-transform:uppercase; color: var(--text-faint); margin-bottom:8px; }
.field input, .field textarea{
  width:100%; background: var(--bg-elevated); border:1px solid var(--line); color: var(--text);
  padding: 13px 15px; border-radius: var(--radius); font: inherit; transition: border-color .2s;
}
.field input:focus, .field textarea:focus{ outline:none; border-color: var(--accent); }
.field textarea{ resize: vertical; min-height: 140px; }
.hp-field{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.form-msg{ margin-top:16px; font-size:.9rem; }
.form-msg[data-state="ok"]{ color: #8fd19e; }
.form-msg[data-state="err"]{ color: #e08a8a; }
.contact-meta{ color: var(--text-dim); }
.contact-meta a{ color: var(--accent); }

/* ---------- Livre d'or ---------- */
.guestbook-form{ max-width: 640px; margin-bottom: clamp(40px,6vw,64px); }
.guestbook-list{ display:flex; flex-direction:column; gap:16px; max-width: 720px; }
.gb-entry{
  background: var(--bg-elevated); border:1px solid var(--line); border-radius: var(--radius);
  padding: 20px 24px;
}
.gb-entry-msg{ margin:0 0 10px; font-size:1.05rem; line-height:1.55; color: var(--text); }
.gb-entry-meta{ margin:0; font-size:.76rem; letter-spacing:.05em; text-transform:uppercase; color: var(--text-faint); }

/* ---------- Footer ---------- */
.site-footer{ border-top: 1px solid var(--line); padding: 34px 0; margin-top: 60px; }
.site-footer .container{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:14px; }
.site-footer p{ margin:0; font-size:.82rem; color: var(--text-faint); }
.footer-links{ display:flex; gap:18px; }
.footer-links a{ font-size:.82rem; color: var(--text-faint); }
.footer-links a:hover{ color: var(--accent); }

.to-top{
  position: fixed; right: 20px; bottom: 20px; width:44px; height:44px; border-radius:50%;
  background: var(--bg-elevated); border:1px solid var(--line); color: var(--text);
  display:flex; align-items:center; justify-content:center; cursor:pointer; z-index: 400;
  opacity:0; visibility:hidden; transform: translateY(8px); transition: opacity .25s, transform .25s, visibility 0s .25s;
}
.to-top.is-visible{ opacity:1; visibility:visible; transform:none; transition: opacity .25s, transform .25s; }
.to-top:hover{ border-color: var(--accent); color: var(--accent); }

/* ---------- Utility fade-in on scroll ---------- */
.reveal{ opacity:0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; transition-duration:.001ms !important; animation-duration:.001ms !important; }
}