/* ==========================================================
   Association Zeng Art & Culture — feuille de style
   ========================================================== */

:root {
  --paper: #f7f4ef;
  --paper-2: #efe9e1;
  --ink: #1d1d1b;
  --muted: #6b665f;
  --accent: #a88c72;   /* taupe du dossier de présentation */
  --line: #ddd5ca;
  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --font: 'Lato', system-ui, sans-serif;
  --font-wide: 'Montserrat', 'Lato', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.7 var(--font);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.sr, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip:focus { position: fixed; top: 8px; left: 8px; z-index: 100; background: var(--ink); color: var(--paper); padding: 8px 14px; }

/* ---------- Typographie ---------- */
h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1.12; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); }
h3 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.06em; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.2rem, 2vw, 1.45rem); line-height: 1.5; font-weight: 400; }
.label, .eyebrow {
  font-family: var(--font-wide);
  font-weight: 400;
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}
.muted { color: var(--muted); }
.note { font-size: 0.88rem; font-style: italic; color: var(--muted); }

/* ---------- En-tête ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 76px; }
.brand { display: block; flex: none; color: var(--ink); }
.brand svg { height: 52px; width: auto; }
.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 34px); }
.nav a {
  font-family: var(--font-wide); font-size: 0.78rem; letter-spacing: 0.2em; text-transform: uppercase;
  text-decoration: none; padding: 6px 0; border-bottom: 1px solid transparent; white-space: nowrap;
}
.nav a[aria-current="page"] { border-color: var(--ink); }
.nav a:hover { color: var(--accent); }
.nav-toggle { display: none; }

/* Menu compact (burger) : activé par main.js dès que le menu ne tient plus sur une ligne,
   quelle que soit la langue — voir fitNav() dans partials/top.ejs */
.site-header.compact .nav-toggle {
  display: flex; flex-direction: column; justify-content: center; gap: 7px;
  width: 44px; height: 44px; padding: 10px; background: none; border: 0; cursor: pointer;
}
.nav-toggle .bar { display: block; height: 1px; background: var(--ink); transition: transform .25s; }
.nav-toggle[aria-expanded="true"] .bar:nth-of-type(2) { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-of-type(3) { transform: translateY(-4px) rotate(-45deg); }
.site-header.compact .nav {
  position: absolute; top: 76px; left: 0; right: 0;
  flex-direction: column; align-items: stretch; gap: 0; background: var(--paper);
  border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px;
  display: none;
}
.site-header.compact .nav.open { display: flex; }
.site-header.compact .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
.site-header.compact .nav a[aria-current="page"] { border-color: var(--line); color: var(--accent); }
@media (max-width: 820px) { .brand svg { height: 42px; } }

/* ---------- Sections ---------- */
section { padding: clamp(64px, 10vw, 128px) 0; }
section + section { border-top: 1px solid var(--line); }
.section-dark { background: var(--ink); color: var(--paper); border: 0 !important; }
.section-dark .label { color: #c9b39c; }
.section-dark a:hover { color: #c9b39c; }
.section-tint { background: var(--paper-2); }

.split { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split > :first-child { position: sticky; top: 120px; }
@media (max-width: 820px) {
  .split { grid-template-columns: 1fr; }
  .split > :first-child { position: static; }
}

/* ---------- Page d'accueil ---------- */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 10vw, 128px); }
.hero-grid { display: grid; grid-template-columns: auto 1fr; gap: clamp(32px, 7vw, 110px); align-items: center; }
.hero-mark { color: var(--ink); width: clamp(120px, 17vw, 220px); }
.hero-mark svg { width: 100%; height: auto; }
.hero h1 { margin-bottom: 1.6rem; }
.hero .lead { max-width: 38ch; color: var(--muted); }
@media (max-width: 680px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-mark { width: 96px; }
}

.page-head { padding: clamp(56px, 8vw, 104px) 0 clamp(40px, 6vw, 72px); }
.page-head h1 { max-width: 18ch; }
.page-head .lead { max-width: 52ch; margin-top: 1.4rem; color: var(--muted); }

/* Formule 1 + 1 */
.formula {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center;
  gap: clamp(12px, 3vw, 40px); text-align: center; margin: 3rem 0 1rem;
}
.formula .term { font-family: var(--font-wide); font-weight: 300; font-size: clamp(1rem, 2.2vw, 1.5rem); letter-spacing: 0.12em; text-transform: uppercase; }
.formula .op { font-family: var(--font-wide); font-weight: 300; font-size: clamp(1.6rem, 3vw, 2.4rem); color: #c9b39c; }
@media (max-width: 640px) {
  .formula { grid-template-columns: 1fr; gap: 6px; }
}

/* Grilles de cartes */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin-top: 3rem; }
.card { padding: clamp(24px, 3vw, 36px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.card .num { font-family: var(--font-wide); font-size: 0.75rem; letter-spacing: 0.2em; color: var(--accent); display: block; margin-bottom: 1.4rem; }
.card h3 { margin-bottom: 0.8rem; }
.card p { color: var(--muted); margin: 0; }
.section-dark .cards, .section-dark .card { border-color: #3a3936; }
.section-dark .card p { color: #bdb7ae; }

/* Liste « en un regard » */
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 14px 0 14px 36px; border-bottom: 1px solid var(--line); position: relative; }
.checklist li::before { content: ''; position: absolute; left: 0; top: 50%; width: 18px; height: 1px; background: var(--accent); }
.section-dark .checklist li { border-color: #3a3936; }

/* Chiffres */
.figures { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: clamp(24px, 4vw, 48px); margin-top: 3rem; }
.figure .n { font-family: var(--font-wide); font-weight: 300; font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: 1; display: block; margin-bottom: .6rem; }
.figure .t { font-size: 0.95rem; color: var(--muted); }

/* Citation */
.quote { font-size: clamp(1.5rem, 3.2vw, 2.4rem); line-height: 1.3; font-weight: 700; max-width: 26ch; margin: 0; }
.quote-center { margin: 0 auto; text-align: center; }

/* Étapes édition */
.steps { list-style: none; counter-reset: s; padding: 0; margin: 3rem 0 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; }
.steps li { counter-increment: s; padding: 20px 16px 0 0; border-top: 1px solid var(--ink); font-size: 0.95rem; }
.steps li::before { content: counter(s, decimal-leading-zero); display: block; font-family: var(--font-wide); font-size: 0.75rem; letter-spacing: .2em; color: var(--accent); margin-bottom: .6rem; }
@media (max-width: 820px) { .steps { grid-template-columns: repeat(2, 1fr); row-gap: 28px; } }

/* Comité */
.people { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: clamp(24px, 4vw, 48px); margin: 2.4rem 0; }
.person h3 { font-size: 1.2rem; margin-bottom: .3rem; }
.person p { color: var(--muted); margin: 0; }

/* Boutons */
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2.4rem; }
.btn {
  display: inline-block; padding: 15px 28px; border: 1px solid var(--ink); text-decoration: none;
  font-family: var(--font-wide); font-size: 0.76rem; letter-spacing: 0.22em; text-transform: uppercase;
  transition: background .2s, color .2s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: transparent; color: var(--ink); }
.section-dark .btn { border-color: var(--paper); }
.section-dark .btn:hover { background: var(--paper); color: var(--ink); }

/* Contact */
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.contact-list li:first-child { border-top: 1px solid var(--line); }
.contact-list .label { margin-bottom: .3rem; }
.contact-list .v { font-size: 1.25rem; }

/* ---------- Pied de page ---------- */
.site-footer { background: var(--ink); color: #bdb7ae; font-size: 0.95rem; padding: clamp(56px, 8vw, 88px) 0 28px; }
.site-footer a { color: var(--paper); text-decoration: none; }
.site-footer a:hover { color: #c9b39c; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand { color: var(--paper); }
.footer-brand svg { height: 64px; width: auto; }
.site-footer .label { color: #8d857b; }
.footer-legal { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 56px; padding-top: 24px; border-top: 1px solid #3a3936; font-size: 0.82rem; color: #8d857b; }
@media (max-width: 820px) { .footer-inner { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- Animation ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s ease, transform .8s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---------- Langues ---------- */
.soft { color: #bdb7ae; }
.lang-switch { display: flex; gap: 2px; margin-left: clamp(4px, 1vw, 12px); padding-left: clamp(14px, 2vw, 24px); border-left: 1px solid var(--line); }
.nav .lang-switch a { padding: 6px 6px; letter-spacing: 0.12em; color: var(--muted); border: 0; }
.nav .lang-switch a[aria-current="true"] { color: var(--ink); }
.nav .lang-switch a:hover { color: var(--accent); }
.site-header.compact .lang-switch { margin: 12px 0 0; padding: 0; border: 0; gap: 8px; }
.site-header.compact .nav .lang-switch a { padding: 10px 12px 10px 0; border: 0; }

/* Chinois : polices système adaptées, pas de capitales espacées */
:lang(zh) body, html:lang(zh) body {
  font-family: 'Lato', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}
html:lang(zh) h1, html:lang(zh) h2, html:lang(zh) .quote { letter-spacing: 0.02em; line-height: 1.3; }
html:lang(zh) .lead, html:lang(zh) p { line-height: 1.85; }
html:lang(zh) .label, html:lang(zh) .eyebrow, html:lang(zh) .nav a, html:lang(zh) .btn, html:lang(zh) .formula .term { letter-spacing: 0.12em; }

/* ---------- Galerie d'œuvres ---------- */
.works { columns: 3 260px; column-gap: clamp(16px, 2.4vw, 32px); margin-top: 3rem; }
.work { break-inside: avoid; margin: 0 0 clamp(20px, 3vw, 40px); }
.work img { width: 100%; height: auto; background: var(--paper-2); }
.work figcaption { display: flex; justify-content: space-between; gap: 12px; padding-top: 10px; font-size: 0.9rem; }
.work .artist { font-weight: 700; }
.work .country { font-family: var(--font-wide); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); align-self: center; }

/* ---------- Page Artistes ---------- */
.works a { display: block; cursor: zoom-in; }
.works a:hover img { opacity: .92; }
.works-4 { columns: 4 200px; }
.work-title { display: flex; flex-direction: column; gap: 2px; padding-top: 10px; font-size: 0.9rem; }
.work-title span { color: var(--muted); font-size: 0.82rem; }
.artist-index { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 2rem; }
.artist-index a { font-family: var(--font-wide); font-size: 0.76rem; letter-spacing: 0.16em; text-transform: uppercase; text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 4px; }
.artist { scroll-margin-top: 76px; }
.artist-head { display: flex; align-items: center; gap: clamp(18px, 3vw, 32px); }
.artist-head .label { margin-bottom: .4rem; }
.artist-head .muted { margin: .5rem 0 0; }
.portrait { width: clamp(84px, 11vw, 120px); height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 50%; flex: none; background: var(--paper-2); }

/* ---------- Livres (page Édition) ---------- */
.book { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: start; margin-top: clamp(48px, 7vw, 88px); }
.book + .book { padding-top: clamp(48px, 7vw, 88px); border-top: 1px solid #3a3936; }
.book:nth-of-type(even) .book-main { order: 2; }
.book img { width: 100%; height: auto; display: block; }
.book a { cursor: zoom-in; }
.book-title { font-size: clamp(1.8rem, 3.4vw, 2.6rem); text-transform: none; letter-spacing: -0.01em; margin-bottom: .4rem; }
.book-meta { font-family: var(--font-wide); font-size: 0.76rem; letter-spacing: 0.2em; text-transform: uppercase; color: #c9b39c; margin-bottom: 1.6rem; }
.book-text p:not(.book-meta) { color: #bdb7ae; }
.book-thumbs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 1.8rem 0 1.4rem; align-items: start; }
.book-link { font-family: var(--font-wide); font-size: 0.74rem; letter-spacing: 0.18em; text-transform: uppercase; text-decoration: none; cursor: pointer !important; }
@media (max-width: 820px) {
  .book { grid-template-columns: 1fr; }
  .book:nth-of-type(even) .book-main { order: 0; }
}
.set-title { margin: clamp(36px, 5vw, 56px) 0 0; font-family: var(--font-wide); font-weight: 400; font-size: 0.8rem; letter-spacing: 0.22em; color: var(--accent); padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.set-title + .works { margin-top: 1.6rem; }
/* L'en-tête peut être un peu plus large que le contenu, pour que le menu tienne sur une ligne */
.site-header .wrap { max-width: 1320px; }