/* ==========================================================================
   Portail Photos — Design system "Chambre Noire"
   ========================================================================== */

:root {
  --noir:        #161512; /* fond profond - noir chambre noire chaud */
  --revelateur:  #211F1B; /* fond secondaire / cards */
  --papier:      #EDE7DA; /* texte principal - blanc papier baryte */
  --safelight:   #C1652F; /* accent signature - lampe inactinique */
  --patine:      #8B9A87; /* accent secondaire - oxydation argentique */
  --ligne:       #3A362F; /* bordures / hairlines */

  --papier-90: rgba(237, 231, 218, 0.9);
  --papier-75: rgba(237, 231, 218, 0.75);
  --papier-55: rgba(237, 231, 218, 0.55);
  --papier-30: rgba(237, 231, 218, 0.3);
  --papier-15: rgba(237, 231, 218, 0.15);
  --papier-08: rgba(237, 231, 218, 0.08);

  --noir-95: rgba(22, 21, 18, 0.95);
  --noir-80: rgba(22, 21, 18, 0.8);
  --noir-60: rgba(22, 21, 18, 0.6);
  --noir-00: rgba(22, 21, 18, 0);

  --safelight-90: rgba(193, 101, 47, 0.9);
  --safelight-30: rgba(193, 101, 47, 0.3);
  --safelight-15: rgba(193, 101, 47, 0.15);

  --ff-display: 'Fraunces', Georgia, serif;
  --ff-body: 'Inter', -apple-system, sans-serif;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--ff-body);
  background: var(--noir);
  color: var(--papier);
  line-height: 1.65;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-optical-sizing: auto;
  font-weight: 600;
  line-height: 1.15;
  color: var(--papier);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-top: 2.6rem; margin-bottom: 1.1rem; }
h3 { font-size: 1.35rem; margin-top: 1.8rem; margin-bottom: 0.8rem; }

p { margin-bottom: 1.3rem; }

.eyebrow {
  font-family: var(--ff-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--safelight);
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 1.5rem; }

/* ---- Wrappers anti-distorsion (CODEX REGLE 14) ---- */
.img-hero     { aspect-ratio: 16/9; overflow: hidden; position: relative; }
.img-card     { aspect-ratio: 3/2;  overflow: hidden; }
.img-body     { aspect-ratio: 3/2;  overflow: hidden; margin: 1.8rem 0; border: 1px solid var(--ligne); }
.img-portrait { aspect-ratio: 1/1;  overflow: hidden; border-radius: 50%; }

.img-hero img, .img-card img, .img-body img, .img-portrait img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center top;
}

/* ---- Signature : cadre de visee (viseur reflex) ---- */
.viewfinder { position: relative; }
.viewfinder::before, .viewfinder::after,
.viewfinder .vf-tl, .viewfinder .vf-br { content: ''; position: absolute; width: 28px; height: 28px; z-index: 3; pointer-events: none; }
.viewfinder::before { top: 14px; left: 14px; border-top: 2px solid var(--safelight); border-left: 2px solid var(--safelight); }
.viewfinder::after { bottom: 14px; right: 14px; border-bottom: 2px solid var(--safelight); border-right: 2px solid var(--safelight); }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--noir-95);
  border-bottom: 1px solid var(--ligne);
  backdrop-filter: blur(6px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 1.5rem; max-width: 1180px; margin: 0 auto; }
.brand { display: flex; flex-direction: column; font-family: var(--ff-display); }
.brand-name { font-size: 1.35rem; font-weight: 600; letter-spacing: 0.01em; }
.brand-name .accent { color: var(--safelight); }
.brand-tagline { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--papier-55); }

.main-nav { display: none; }
.main-nav ul { display: flex; gap: 2rem; list-style: none; }
.main-nav a { font-size: 0.92rem; font-weight: 500; padding: 0.4rem 0; border-bottom: 2px solid transparent; transition: border-color 0.2s, color 0.2s; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--safelight); border-bottom-color: var(--safelight); }

.nav-mobile { display: block; }
.nav-mobile summary { list-style: none; cursor: pointer; font-size: 1.6rem; color: var(--papier); }
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile[open] summary { color: var(--safelight); }
.mobile-menu { position: fixed; inset: 0; top: 68px; background: var(--noir); padding: 2rem 1.5rem; overflow-y: auto; }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 0.3rem; }
.mobile-menu a { display: block; padding: 0.85rem 0; font-size: 1.15rem; border-bottom: 1px solid var(--ligne); }

@media (min-width: 960px) {
  .main-nav { display: block; }
  .nav-mobile { display: none; }
}

/* ---- Hero ---- */
.hero { position: relative; display: flex; align-items: flex-end; color: var(--papier); }
.hero-home { min-height: 82vh; }
.hero-article { min-height: 48vh; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--noir-60) 0%, var(--noir-80) 60%, var(--noir) 100%);
}
.hero-content { position: relative; z-index: 2; padding: 3.5rem 1.5rem; max-width: 1180px; margin: 0 auto; width: 100%; }
.hero-eyebrow { margin-bottom: 1rem; }
.hero-summary { max-width: 640px; font-size: 1.1rem; color: var(--papier-90); margin-top: 1rem; }

/* ---- Cards grid ---- */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.8rem; margin: 2rem 0; }
.card {
  display: flex; flex-direction: column;
  background: var(--revelateur);
  border: 1px solid var(--ligne);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--safelight-30); }
.card-body { padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; flex: 1; }
.card-meta { display: flex; gap: 0.8rem; align-items: center; margin-bottom: 0.6rem; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--papier-55); }
.card-meta .cat { color: var(--safelight); }
.card h3 { margin-top: 0; font-size: 1.18rem; }
.card p { font-size: 0.94rem; color: var(--papier-75); flex: 1; }

/* ---- Pillars grid (homepage) ---- */
.pillars-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.pillar-card { padding: 1.8rem; border: 1px solid var(--ligne); background: var(--revelateur); transition: border-color 0.25s; }
.pillar-card:hover { border-color: var(--safelight); }
.pillar-num { font-family: var(--ff-body); font-size: 0.75rem; letter-spacing: 0.1em; color: var(--patine); text-transform: uppercase; }
.pillar-card h3 { font-size: 1.25rem; }

/* ---- Category filter ---- */
.cat-filter { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.5rem 0 2rem; }
.cat-filter a {
  padding: 0.5rem 1.1rem; border: 1px solid var(--ligne); font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.05em; transition: all 0.2s;
}
.cat-filter a:hover { border-color: var(--safelight); color: var(--safelight); }
.cat-filter a[aria-current="page"] { background: var(--safelight); border-color: var(--safelight); color: var(--noir); font-weight: 600; }

/* ---- Article layout ---- */
.article-wrap { display: grid; grid-template-columns: 1fr; gap: 3rem; max-width: 1180px; margin: 0 auto; padding: 3rem 1.5rem 5rem; }
.article-toc {
  display: none;
  border-left: 2px solid var(--ligne); padding-left: 1.2rem;
  font-size: 0.88rem; align-self: start; position: sticky; top: 100px;
  max-height: calc(100vh - 110px); overflow-y: auto;
}
.article-toc-title { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.72rem; color: var(--patine); margin-bottom: 0.8rem; }
.article-toc ol { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; counter-reset: toc; }
.article-toc li { counter-increment: toc; }
.article-toc li::before { content: counter(toc, decimal-leading-zero) ' '; color: var(--safelight); font-weight: 600; }
.article-toc a { color: var(--papier-75); }
.article-toc a:hover { color: var(--safelight); }

.article-body { max-width: 720px; }
.article-body :is(h2, h3) { scroll-margin-top: 100px; }
.breadcrumb { font-size: 0.78rem; color: var(--papier-55); margin-bottom: 1.2rem; }
.breadcrumb a:hover { color: var(--safelight); }
.article-meta { display: flex; gap: 1rem; align-items: center; font-size: 0.8rem; color: var(--papier-55); margin: 0.8rem 0 2rem; text-transform: uppercase; letter-spacing: 0.06em; }

.article-body p:first-of-type::first-letter {
  font-family: var(--ff-display);
  font-size: 3.4rem;
  float: left;
  line-height: 0.8;
  padding: 0.1rem 0.5rem 0 0;
  color: var(--safelight);
}

.article-body ul, .article-body ol { margin: 0 0 1.3rem 1.4rem; }
.article-body li { margin-bottom: 0.5rem; }

.article-body p a, .article-body li a {
  color: var(--safelight);
  text-decoration: underline;
  text-decoration-color: rgba(193, 101, 47, 0.4);
  text-underline-offset: 0.15em;
  transition: text-decoration-color 0.15s ease;
}
.article-body p a:hover, .article-body li a:hover {
  text-decoration-color: var(--safelight);
}

.article-body table {
  width: 100%; border-collapse: collapse; margin: 1.8rem 0;
  font-size: 0.94rem; background: var(--revelateur);
}
.article-body th, .article-body td { border: 1px solid var(--ligne); padding: 0.7rem 0.9rem; text-align: left; }
.article-body th { background: var(--noir); color: var(--safelight); text-transform: uppercase; font-size: 0.78rem; letter-spacing: 0.05em; }
.article-body tr:nth-child(even) td { background: rgba(237, 231, 218, 0.02); }

.article-body blockquote {
  border-left: 3px solid var(--safelight);
  background: var(--revelateur);
  padding: 1.2rem 1.4rem;
  margin: 1.8rem 0;
  font-style: italic;
  color: var(--papier-90);
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body blockquote strong:first-child { font-style: normal; color: var(--safelight); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.8rem; display: block; margin-bottom: 0.4rem; }

@media (min-width: 1080px) {
  .article-wrap { grid-template-columns: 220px 1fr; align-items: start; }
  .article-wrap:not(:has(.article-toc)) { grid-template-columns: 1fr; }
  .article-wrap:not(:has(.article-toc)) > .article-body { grid-column: 1 / -1; }
  .article-toc { display: block; }
}

/* ---- FAQ accordion ---- */
.faq-section { margin-top: 3rem; padding-top: 2.5rem; border-top: 1px solid var(--ligne); }
.faq-item { border-bottom: 1px solid var(--ligne); }
.faq-question {
  width: 100%; text-align: left; background: none; border: none; color: var(--papier);
  font-family: var(--ff-display); font-size: 1.05rem; padding: 1.1rem 0;
  display: flex; justify-content: space-between; align-items: center; cursor: pointer;
}
.faq-question::after { content: '+'; font-size: 1.4rem; color: var(--safelight); transition: transform 0.25s; }
.faq-question[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.95rem; color: var(--papier-75); }
.faq-answer-inner { padding-bottom: 1.2rem; }

/* ---- Callout boxes ---- */
.callout { border: 1px solid var(--ligne); border-left: 3px solid var(--patine); background: var(--revelateur); padding: 1.2rem 1.4rem; margin: 1.8rem 0; }
.callout-title { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--patine); margin-bottom: 0.5rem; font-weight: 600; }
.callout.callout-warning { border-left-color: var(--safelight); }
.callout.callout-warning .callout-title { color: var(--safelight); }

/* ---- Related section ---- */
.related-section { margin-top: 3.5rem; padding-top: 2.5rem; border-top: 1px solid var(--ligne); }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--ligne); background: var(--revelateur); margin-top: 4rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; padding: 3.5rem 1.5rem; max-width: 1180px; margin: 0 auto; }
.footer-col h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--patine); margin-bottom: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { font-size: 0.9rem; color: var(--papier-75); }
.footer-col a:hover { color: var(--safelight); }
.footer-bottom { border-top: 1px solid var(--ligne); padding: 1.4rem 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; max-width: 1180px; margin: 0 auto; font-size: 0.8rem; color: var(--papier-55); }
.footer-bottom a:hover { color: var(--safelight); }

/* ---- Reveal animation ---- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.6rem; border: 1px solid var(--safelight); color: var(--safelight); font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; transition: background 0.2s, color 0.2s; }
.btn:hover { background: var(--safelight); color: var(--noir); }
.btn-solid { background: var(--safelight); color: var(--noir); }
.btn-solid:hover { background: transparent; color: var(--safelight); }

/* ---- Print ---- */
@media print {
  .site-header, .site-footer, .article-toc, .mobile-menu { display: none; }
}