/* Artothèque : atelier, papier chaud, encre brune, terracotta pour l'action.
   Chargé après Bootstrap : on redéfinit ses variables plutôt que de le surcharger.
   Thème clair seul. */

/* Polices auto-hébergées (sous-ensemble latin), voir ../fonts/README.md */
@font-face {
  font-family: 'Bricolage Grotesque';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('../fonts/bricolage-grotesque-latin-wght-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/source-sans-3-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/source-sans-3-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Source Sans 3';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/source-sans-3-latin-400-italic.woff2') format('woff2');
}

/* Jetons de couleur et variables Bootstrap associées */
:root {
  --at-paper: #f8f3ec;
  --at-paper-2: #efe6d9;
  --at-ink: #2b211b;
  --at-ink-soft: #6b5d52;
  --at-line: #e2d5c3;
  --at-terracotta: #a8492b;
  --at-terracotta-dk: #8a3a21;
  --at-ochre: #d39a3c;
  --at-sage: #5f7356;
  --at-sage-bg: #e3e9dc;
  --at-clay-bg: #f3dccf;
  --at-white: #fffdf9;
  --at-display: 'Bricolage Grotesque', 'Avenir Next', system-ui, sans-serif;
  --at-body: 'Source Sans 3', 'Segoe UI', system-ui, sans-serif;

  --bs-body-bg: var(--at-paper);
  --bs-body-bg-rgb: 248, 243, 236;
  --bs-tertiary-bg: var(--at-paper-2);
  --bs-tertiary-bg-rgb: 239, 230, 217;
  --bs-body-color: var(--at-ink);
  --bs-body-color-rgb: 43, 33, 27;
  --bs-emphasis-color: var(--at-ink);
  --bs-secondary-color: var(--at-ink-soft);
  --bs-border-color: var(--at-line);
  --bs-primary: var(--at-terracotta);
  --bs-primary-rgb: 168, 73, 43;
  --bs-link-color: var(--at-terracotta);
  --bs-link-color-rgb: 168, 73, 43;
  --bs-link-hover-color: var(--at-terracotta-dk);
  --bs-link-hover-color-rgb: 138, 58, 33;
  --bs-success: var(--at-sage);
  --bs-success-rgb: 95, 115, 86;
  --bs-focus-ring-color: rgb(211 154 60 / .5);
  --bs-body-font-family: var(--at-body);
  --bs-body-font-size: 1.0625rem;
  --bs-body-line-height: 1.6;
  --bs-border-radius: .9rem;
  --bs-border-radius-sm: .5rem;
  color-scheme: light;
}

/* Typographie */
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--at-display);
  text-wrap: balance;
}
a { text-underline-offset: .18em; }

/* Boutons : pilule, cible tactile de 3 rem */
.btn {
  --bs-btn-border-radius: 999px;
  --bs-btn-font-weight: 600;
  min-height: 3rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-primary {
  --bs-btn-bg: var(--at-terracotta);
  --bs-btn-border-color: var(--at-terracotta);
  --bs-btn-color: var(--at-white);
  --bs-btn-hover-bg: var(--at-terracotta-dk);
  --bs-btn-hover-border-color: var(--at-terracotta-dk);
  --bs-btn-hover-color: var(--at-white);
  --bs-btn-active-bg: var(--at-terracotta-dk);
  --bs-btn-active-border-color: var(--at-terracotta-dk);
  --bs-btn-active-color: var(--at-white);
}

/* Focus visible : anneau de 3 px en terracotta foncé (7,03:1 sur le papier ; l'ocre n'atteint que 2,25:1) */
a:focus-visible, button:focus-visible, .btn:focus-visible, .form-control:focus-visible,
.form-select:focus-visible, .form-check-input:focus-visible, summary:focus-visible {
  outline: 3px solid var(--at-terracotta-dk);
  outline-offset: 2px;
}

/* Lien d'évitement : visible au focus seulement */
.at-skip-link:focus { position: fixed; top: .5rem; left: .5rem; z-index: 1030; padding: .6rem 1rem; border-radius: 999px; background: var(--at-white); font-weight: 600; }

/* Pages étroites (connexion, confirmation) */
.at-narrow { max-width: 32rem; }
.at-narrow .btn { width: 100%; }
@media (min-width: 40rem) { .at-narrow .btn { width: auto; } }

/* Accueil */
.at-wrap { max-width: 72rem; margin: 0 auto; padding-inline: max(16px, env(safe-area-inset-left, 0px)) max(16px, env(safe-area-inset-right, 0px)); }
.at-eyebrow { font: 600 .8rem/1 var(--at-body); letter-spacing: .08em; text-transform: uppercase; color: var(--at-ink-soft); }
.at-hero-grid { display: grid; gap: 2.5rem; padding-block: 3rem 3.5rem; align-items: center; }
.at-hero-title { margin-top: .8rem; font-size: clamp(2.3rem, 7vw, 4.2rem); font-weight: 800; line-height: 1.1; letter-spacing: -.02em; }
.at-hero-title em { font-style: normal; color: var(--at-terracotta); }
.at-hero-lead { font-size: 1.2rem; color: var(--at-ink-soft); max-width: 34rem; margin: 1.1rem 0 0; }
.at-hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.at-hero-wall { position: relative; aspect-ratio: 5 / 4; max-width: 100%; }
.at-frame { position: absolute; border-radius: var(--bs-border-radius-sm); border: .45rem solid var(--at-white); box-shadow: 0 10px 30px -12px rgb(43 33 27 / .35); }
.at-frame-1 { inset: 4% 40% 34% 2%; background: radial-gradient(circle at 35% 40%, var(--at-ochre) 0 22%, transparent 23%), linear-gradient(160deg, #c46a45, #7d3b26); transform: rotate(-2deg); }
.at-frame-2 { inset: 0 2% 48% 64%; background: linear-gradient(90deg, #e9d7bd 0 50%, var(--at-ink) 50% 54%, #e9d7bd 54%); }
.at-frame-3 { inset: 58% 30% 0 20%; background: repeating-linear-gradient(115deg, var(--at-sage) 0 14px, #7f9174 14px 28px); transform: rotate(1.5deg); }
.at-frame-4 { inset: 56% 2% 8% 74%; background: radial-gradient(circle, var(--at-ochre) 0 30%, var(--at-clay-bg) 31%); }
.at-how { background: var(--at-paper-2); }
.at-how .at-wrap { padding-block: 3.5rem; }
.at-how h2 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); font-weight: 800; line-height: 1.1; margin: 0; }
.at-steps { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; gap: 1.25rem; counter-reset: step; }
.at-steps li { counter-increment: step; background: var(--at-white); border-radius: var(--bs-border-radius); padding: 1.4rem 1.4rem 1.5rem; display: grid; gap: .5rem; align-content: start; }
.at-steps li::before { content: counter(step); font: 800 1.1rem/1 var(--at-display); width: 2.4rem; height: 2.4rem; border-radius: 50%; display: grid; place-items: center; background: var(--at-ochre); color: var(--at-ink); margin-bottom: .4rem; }
.at-steps h3 { font-size: 1.25rem; font-weight: 600; margin: 0; }
.at-steps p { color: var(--at-ink-soft); margin: 0; }
.at-collectives .at-wrap { padding-block: 3rem; }
.at-collectives h2 { font-size: clamp(1.5rem, 4vw, 2rem); font-weight: 800; line-height: 1.1; margin: 0 0 .75rem; }
.at-collectives p { max-width: 40rem; margin: 0 0 1.25rem; }
.at-how-note { margin: 1.5rem 0 0; font-size: .95rem; color: var(--at-ink-soft); }
@media (min-width: 40rem) { .at-steps { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 62rem) { .at-hero-grid { grid-template-columns: 1.1fr 1fr; padding-block: 4.5rem 5rem; } }

/* En-tête commun */
.at-site-header { border-bottom: 1px solid var(--at-line); background: var(--at-paper); }
.at-site-header-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .25rem 1rem; padding-block: .75rem; }
.at-brand { display: inline-flex; align-items: center; gap: .5rem; font: 800 1.35rem/1 var(--at-display); color: var(--at-ink); text-decoration: none; }
.at-brand img { width: 1.6rem; height: 1.6rem; }
.at-site-header nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0 1rem; }
.at-site-header nav a { display: inline-flex; align-items: center; min-height: 2.75rem; font-weight: 600; text-decoration: none; }
.at-site-header nav form { display: inline; }
.at-link-button {
    background: none; border: 0; padding: 0 .25rem; min-height: 2.75rem;
    color: var(--bs-link-color); font-weight: 600; cursor: pointer;
}
.at-link-button:hover { color: var(--bs-link-hover-color); text-decoration: underline; }

/* Pied de page commun */
.at-site-footer { border-top: 1px solid var(--at-line); background: var(--at-paper-2); font-size: .95rem; }
.at-site-footer-inner { padding-block: 2.2rem; display: grid; gap: 1.5rem; }
.at-site-footer ul { list-style: none; margin: .5rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; }
.at-footer-title { font: 800 1rem/1.3 var(--at-body); margin: 0; }
.at-footer-tagline { margin: .5rem 0 0; color: var(--at-ink-soft); }
@media (min-width: 40rem) { .at-site-footer-inner { grid-template-columns: 2fr 1fr 1fr; } }

/* Badges métier (contrastes >= 4,5:1) */
.badge.at-badge-available { background: var(--at-sage-bg); color: #3f5238; }
.badge.at-badge-on-loan { background: var(--at-clay-bg); color: var(--at-terracotta-dk); }
.badge.at-badge-unavailable, .badge.at-badge-neutral { background: var(--at-paper-2); color: var(--at-ink-soft); }

.badge.at-badge-late { background: var(--at-terracotta); color: #fff; }

/* Cadre d'œuvre du catalogue (cartes Bootstrap) */
.card.at-artwork-card { background: var(--at-white); border: .45rem solid var(--at-white); border-radius: var(--bs-border-radius-sm); box-shadow: 0 10px 30px -12px rgb(43 33 27 / .35); overflow: hidden; }

/* Nouvelles œuvres de l'accueil */
.at-artworks-section .at-wrap { padding-block: 3.5rem; }
.at-artworks-section h2 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); font-weight: 800; line-height: 1.1; margin: .6rem 0 0; }
.at-artworks { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; gap: 1.75rem 1.5rem; grid-template-columns: 1fr; }
.at-artwork-frame { display: block; aspect-ratio: 4 / 3; border: .45rem solid var(--at-white); border-radius: var(--bs-border-radius-sm); box-shadow: 0 10px 30px -12px rgb(43 33 27 / .35); overflow: hidden; background: var(--at-paper-2); }
.at-artwork-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.at-artwork h3 { font-size: 1.2rem; font-weight: 600; margin: 1rem 0 0; }
.at-artwork-by { margin: .2rem 0 0; color: var(--at-ink-soft); }
.at-artwork-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem .8rem; margin: .6rem 0 0; font-size: .95rem; color: var(--at-ink-soft); }
.at-artwork-rent { margin: .4rem 0 0; font-weight: 600; }
.at-artworks-empty { margin-top: 1.5rem; color: var(--at-ink-soft); }
@media (min-width: 40rem) { .at-artworks { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 62rem) { .at-artworks { grid-template-columns: repeat(3, 1fr); } }

/* Surcharges Bootstrap codées en dur (bleu par défaut) */
.nav-pills { --bs-nav-pills-link-active-bg: var(--at-terracotta); --bs-nav-pills-link-active-color: var(--at-white); }
.nav { --bs-nav-link-color: var(--at-terracotta); --bs-nav-link-hover-color: var(--at-terracotta-dk); }
.btn-outline-primary {
  --bs-btn-color: var(--at-terracotta);
  --bs-btn-border-color: var(--at-terracotta);
  --bs-btn-hover-color: var(--at-white);
  --bs-btn-hover-bg: var(--at-terracotta);
  --bs-btn-hover-border-color: var(--at-terracotta);
  --bs-btn-focus-shadow-rgb: 211, 154, 60;
  --bs-btn-active-color: var(--at-white);
  --bs-btn-active-bg: var(--at-terracotta-dk);
  --bs-btn-active-border-color: var(--at-terracotta-dk);
  --bs-btn-disabled-color: var(--at-terracotta);
  --bs-btn-disabled-border-color: var(--at-terracotta);
}
.alert.at-alert-info {
    background: var(--at-paper-2);
    color: var(--at-ink);
    border-color: var(--at-line);
}

.at-collective-logo {
    height: 4rem;
    width: auto;
    max-width: 40vw;
    object-fit: contain;
}

.at-collective-mark {
    flex-shrink: 0;
    object-fit: contain;
}

.at-collective-mark-sm {
    width: 2.5rem;
    height: 2.5rem;
}

.at-collective-initial {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--at-terracotta-dk);
    color: var(--at-white);
    font-family: var(--at-display);
    font-weight: 600;
}