/* ==========================================================================
   Les Clés de Saint Pierre — monographie patrimoniale
   Thème clair par défaut (pierre/encre/or vieilli), sombre via prefers-color-scheme
   ========================================================================== */

:root {
  --bg: #FAF7F2;
  --bg-tinted: #F2ECE1;
  --bg-card: #FFFDF9;
  --ink: #1F1B16;
  --ink-soft: #4A443B;
  --ink-faint: #675F50;
  --accent: #9A7B2F;
  --accent-deep: #7C6224;
  --line: rgba(31, 27, 22, 0.18);
  --line-strong: rgba(31, 27, 22, 0.55);
  --shadow: 0 2px 14px rgba(31, 27, 22, 0.08);
  --shadow-lift: 0 10px 30px rgba(31, 27, 22, 0.12);
  --photo-filter: sepia(0.12) contrast(1.04) saturate(1.02);
  --font-display: "Cormorant Garamond", "Garamond", Georgia, serif;
  --font-body: "Lato", "Helvetica Neue", Arial, sans-serif;
  --header-h: 4.25rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16130F;
    --bg-tinted: #1E1A14;
    --bg-card: #211D16;
    --ink: #EDE6D8;
    --ink-soft: #C9BFAC;
    --ink-faint: #948A76;
    --accent: #C4A052;
    --accent-deep: #D8B96B;
    --line: rgba(237, 230, 216, 0.16);
    --line-strong: rgba(237, 230, 216, 0.5);
    --shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
    --shadow-lift: 0 10px 30px rgba(0, 0, 0, 0.45);
    --photo-filter: sepia(0.1) contrast(1.02) brightness(0.96);
  }
  /* sur or clair, le texte repasse en encre sombre */
  .btn-solid:hover { color: #16130F; }
  ::selection { color: #16130F; }
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  /* grain de papier très léger */
  background-image: radial-gradient(rgba(31, 27, 22, 0.025) 1px, transparent 1px);
  background-size: 4px 4px;
}

@media (prefers-color-scheme: dark) {
  body { background-image: radial-gradient(rgba(237, 230, 216, 0.02) 1px, transparent 1px); }
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent-deep); text-underline-offset: 3px; transition: color 0.2s ease; }
a:hover { color: var(--accent); }

.container { max-width: 68rem; margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2.5rem); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  background: var(--ink); color: var(--bg); padding: 0.5rem 1rem;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 1rem; color: var(--bg); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

::selection { background: var(--accent); color: #FFFDF9; }

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

.kicker {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 0.75rem;
}

.section-title, .section-subtitle, .hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}

.section-title { font-size: clamp(2.25rem, 5vw, 3.25rem); }
.section-subtitle { font-size: clamp(1.75rem, 4vw, 2.375rem); }

.section-head { margin-bottom: clamp(2rem, 5vw, 3rem); }

.prose p { margin: 0 0 1.1em; color: var(--ink-soft); }
.prose p:last-child { margin-bottom: 0; }
.prose strong, .lead strong { color: var(--ink); }
.prose .lead {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  line-height: 1.45;
  color: var(--ink);
}

/* ---------- Ornements ---------- */

.ornament { display: flex; align-items: center; gap: 1rem; margin: 1.75rem 0; }
.ornament-line { flex: 0 1 5.5rem; height: 1px; background: var(--line-strong); }
.fleuron { color: var(--accent); font-size: 1.375rem; line-height: 1; }

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

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 68rem; margin-inline: auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
  min-height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

.brand {
  display: flex; align-items: center; gap: 0.6rem;
  text-decoration: none; color: var(--ink);
}
.brand-key { width: 1.4rem; height: 1.4rem; color: var(--accent); flex-shrink: 0; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 600; letter-spacing: 0.01em; white-space: nowrap;
}

.nav-menu { display: flex; align-items: center; flex-wrap: nowrap; gap: clamp(0.75rem, 1.8vw, 1.75rem); }

.nav-link {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.10em; text-transform: uppercase;
  text-decoration: none; color: var(--ink-soft);
  padding: 0.25rem 0; position: relative; white-space: nowrap; flex-shrink: 0;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-toggle { display: none; }

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

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8125rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  text-decoration: none; text-align: center;
  padding: 0.8rem 1.6rem;
  border: 1px solid var(--ink);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
}

.btn-pill { border-radius: 100px; padding-inline: 2rem; }
.btn:active { transform: translateY(1px); }

.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: #FFFDF9; }

.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent-deep); color: var(--accent-deep); }

.btn-white { background: #FFFFFF; color: #1F1B16; border-color: #FFFFFF; }
.btn-white:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: #FFFDF9; }

.nav-cta {
  padding: 0.5rem 1.5rem;
  white-space: nowrap; flex-shrink: 0;
  font-size: 0.75rem; letter-spacing: 0.10em;
  background: var(--accent);
  color: #FFFDF9;
  border-color: var(--accent);
  border-radius: 100px;
}
.nav-cta:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #FFFDF9;
}

/* ---------- Bandeau vidéo ---------- */

.video-banner { padding: 0 0 clamp(1.5rem, 4vw, 2.5rem); }

.video-plate { max-width: 56rem; margin-inline: auto; }
.video-plate video {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line-strong);
  padding: 0.5rem;
  background: var(--bg-card);
  box-shadow: var(--shadow);
}
.video-plate figcaption { text-align: center; }

/* ---------- Hero ---------- */

.hero { padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 8vw, 6rem); overflow: hidden; }

.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
}

.hero-title { font-size: clamp(2.75rem, 7vw, 4.25rem); font-weight: 500; }
.hero-title em { font-style: italic; color: var(--accent-deep); white-space: nowrap; }

.hero-lede {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  color: var(--ink-soft); max-width: 34rem; margin: 0 0 2.25rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.875rem; }

.hero-plate { transform: none; }
.hero-plate img { width: min(100%, 389px); margin-inline: auto; }

/* ---------- Planches (photos) ---------- */

.plate { margin: 0; max-width: 100%; }
.plate img {
  border: 1px solid var(--line-strong);
  padding: 0.5rem;
  background: var(--bg-card);
  box-shadow: var(--shadow);
  filter: var(--photo-filter);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.plate:hover img { box-shadow: var(--shadow-lift); transform: translateY(-3px); }
.plate figcaption {
  font-family: var(--font-display);
  font-style: italic; font-size: 0.9375rem;
  color: var(--ink-faint);
  margin-top: 0.7rem; line-height: 1.4;
}

.plate-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.25rem);
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  align-items: end;
}
/* jamais d'agrandissement au-delà du natif : tailles naturelles, bas alignés */
.plate-grid .plate img { width: auto; max-width: 100%; }

.plate-row { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: flex-end; margin-top: 1.75rem; }
.plate-inline { margin-top: 1.25rem; }
/* hauteur fixe : la boîte est stable avant le chargement (ancres fiables) */
.plate-inline img { height: 22rem; width: auto; max-width: 100%; object-fit: contain; object-position: left bottom; }

/* ---------- Sections ---------- */

.section { padding: clamp(3.5rem, 9vw, 6.5rem) 0; }
.section-tinted { background: var(--bg-tinted); border-block: 1px solid var(--line); }

.two-col {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem); align-items: start;
}
.two-col .plate { justify-self: center; }

.subsection { margin-top: clamp(3.5rem, 7vw, 5.5rem); }

/* ---------- Stats ---------- */

.stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin: clamp(2.75rem, 6vw, 4rem) 0 0; padding: 0;
}
.stat { padding: 1.75rem 1rem; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat dt {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-faint);
  margin-bottom: 0.5rem;
}
.stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3rem); font-weight: 600; line-height: 1;
  color: var(--accent-deep);
}

/* ---------- Aside ---------- */

.aside-card {
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  background: var(--bg-card);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.aside-title {
  font-family: var(--font-display);
  font-size: 1.375rem; font-weight: 600; margin: 0 0 0.75rem;
}
.aside-card p { margin: 0; color: var(--ink-soft); font-size: 0.96875rem; }

/* ---------- Timeline ---------- */

.timeline { list-style: none; margin: 0; padding: 0; }

.timeline-item {
  display: grid; grid-template-columns: 7rem minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  padding: clamp(2rem, 4vw, 2.75rem) 0;
  border-top: 1px solid var(--line);
}
.timeline-item:last-child { border-bottom: 1px solid var(--line); }

.timeline-year {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem); font-weight: 600; line-height: 1;
  color: var(--accent-deep); margin: 0;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 1.75rem); font-weight: 600;
  margin: 0 0 0.6rem; line-height: 1.2;
}
.timeline-body > p { margin: 0; color: var(--ink-soft); max-width: 44rem; }

/* ---------- Projets en cours ---------- */

.project-card {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  border: 1px solid var(--line-strong);
  background: var(--bg-card);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  box-shadow: var(--shadow);
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.5rem, 4vw, 2.75rem); align-items: center;
}
.project-card-text { display: flex; flex-direction: column; align-items: flex-start; }
.project-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2rem); font-weight: 600; margin: 0 0 0.75rem;
}
.project-card-text > p:not(.kicker) { color: var(--ink-soft); max-width: 46rem; margin: 0 0 1.5rem; }
.project-card-media { width: clamp(160px, 20vw, 220px); margin: 0; }

/* ---------- Nous soutenir ---------- */

.tax-banner {
  display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem); align-items: center;
  border: 1px solid var(--accent);
  background: var(--bg-card);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg));
  padding: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.tax-headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.125rem); font-weight: 500; line-height: 1.25;
  margin: 0 0 0.875rem;
}
.tax-headline strong { color: var(--accent-deep); font-weight: 700; }
.tax-note { font-size: 0.84375rem; color: var(--ink-faint); margin: 0; line-height: 1.55; }

.tax-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.tax-table th {
  font-size: 0.71875rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint); text-align: left; padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--line-strong);
}
.tax-table td {
  font-family: var(--font-display);
  font-size: 1.1875rem; padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--line);
}
.tax-table th:last-child, .tax-table td:last-child { text-align: right; }
.tax-table tbody tr:last-child td { border-bottom: none; }
.tax-table td:last-child { color: var(--accent-deep); font-weight: 600; }

.donate-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.donate-card {
  border: 1px solid var(--line);
  background: var(--bg-card);
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 0.4rem;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.donate-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-3px); }

.donate-featured {
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.25rem, 3vw, 2.5rem); align-items: center;
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg));
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}
.donate-featured-text { display: flex; flex-direction: column; gap: 0.4rem; }
.donate-featured .donate-title { border-bottom: none; padding-bottom: 0; margin-bottom: 0.25rem; }
.donate-featured-action { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.donate-featured-img {
  width: clamp(150px, 18vw, 200px); aspect-ratio: 3 / 4; object-fit: cover;
  border-radius: 8px; box-shadow: var(--shadow-lift);
}
.donate-featured .btn { margin-top: 0; align-self: stretch; white-space: nowrap; text-align: center; }

.donate-title {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 600; margin: 0 0 0.5rem;
  padding-bottom: 0.75rem; border-bottom: 1px solid var(--line);
}
.donate-card p { margin: 0; color: var(--ink-soft); font-size: 0.96875rem; }

.donate-order { font-family: var(--font-display); font-size: 1.1875rem; color: var(--ink); line-height: 1.35; }
.donate-address { font-style: normal; color: var(--ink-soft); font-size: 0.96875rem; line-height: 1.6; }

.iban-block { display: flex; flex-direction: column; gap: 0.15rem; }
.iban-label {
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-faint);
}
.iban-block code {
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.875rem; letter-spacing: 0.02em;
  color: var(--ink);
}
.donate-bank { font-size: 0.84375rem; color: var(--ink-faint); }

.btn-copy { margin-top: auto; align-self: flex-start; }
.btn-copy.copied { border-color: var(--accent-deep); color: var(--accent-deep); }

.donate-card .btn { margin-top: 1rem; align-self: flex-start; }
.donate-card .btn-copy { margin-top: 1rem; }

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

.site-footer {
  background: var(--ink); color: var(--bg);
  padding: clamp(3rem, 7vw, 4.5rem) 0;
  text-align: center;
}
@media (prefers-color-scheme: dark) {
  .site-footer { background: #0E0C08; color: var(--ink); border-top: 1px solid var(--line); }
}

.footer-fleuron { font-size: 1.75rem; margin: 0 0 1.25rem; color: var(--accent); }
.footer-name {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 1.75rem); font-weight: 600;
  margin: 0 0 1rem;
}
.footer-line { margin: 0.2rem 0; font-size: 0.9375rem; opacity: 0.85; }
.footer-line a { color: inherit; }
.footer-legal { margin: 1.5rem 0 0; font-size: 0.78125rem; letter-spacing: 0.06em; opacity: 0.55; }

/* ---------- Révélation au scroll ---------- */

/* masqué uniquement quand JS est là pour révéler (classe .js posée inline) */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Responsive ---------- */

@media (max-width: 56rem) {
  .hero-grid, .two-col, .tax-banner { grid-template-columns: 1fr; }
  .hero-plate { transform: none; justify-self: start; }
  .hero-plate.reveal.is-visible { transform: none; }
  .donate-grid { grid-template-columns: 1fr; }
  .project-card { grid-template-columns: 1fr; }
  .project-card-media { width: clamp(180px, 50vw, 240px); }
  .donate-featured { grid-template-columns: 1fr; }
  .donate-featured-action { align-items: flex-start; }
  .donate-featured .btn { align-self: flex-start; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .plate-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }

  /* Nav mobile */
  .nav-toggle {
    display: grid; place-items: center;
    width: 2.75rem; height: 2.75rem;
    background: transparent; border: 1px solid var(--line);
    cursor: pointer; color: var(--ink);
  }
  .nav-toggle-bar {
    position: relative; display: block;
    width: 1.125rem; height: 1px; background: currentColor;
    transition: background 0.2s ease;
  }
  .nav-toggle-bar::before, .nav-toggle-bar::after {
    content: ""; position: absolute; left: 0;
    width: 100%; height: 1px; background: currentColor;
    transition: transform 0.25s ease, top 0.25s ease;
  }
  .nav-toggle-bar::before { top: -6px; }
  .nav-toggle-bar::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { top: 0; transform: rotate(-45deg); }

  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem clamp(1.25rem, 4vw, 2.5rem) 1.25rem;
    display: none;
  }
  .nav-menu.is-open { display: flex; }
  .nav-link { padding: 0.875rem 0; border-bottom: 1px solid var(--line); white-space: normal; }
  .nav-link::after { display: none; }
  .nav-cta { margin-top: 1rem; }
}

@media (max-width: 44rem) {
  .plate-grid { grid-template-columns: 1fr; }
  .plate-grid .plate { text-align: center; }
  .plate-grid .plate img { margin-inline: auto; }
  .hero .kicker { font-size: 0.6875rem; letter-spacing: 0.18em; }
  .plate-row { flex-direction: column; align-items: flex-start; }
  .stats { grid-template-columns: 1fr; }
  .stat + .stat { border-left: none; border-top: 1px solid var(--line); }
}