/* ===== Les Billets de l'AOF - Public CSS ===== */

:root {
    --color-primary: #1a365d;
    --color-primary-light: #2d4a7c;
    --color-accent: #c69749;
    --color-accent-light: #d4a85a;
    --color-teal: #2d8a6e;
    --color-bg: #f8f6f3;
    --color-card: #ffffff;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-border: #e2e8f0;
    --color-border-light: #edf2f7;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 0.3s ease;
    --sidebar-width: 280px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 20px;
}

/* ===== Mobile Sidebar Toggle ===== */
.sidebar-toggle-mobile {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    background: var(--color-primary);
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

/* ===== Site Layout (Sidebar + Content) ===== */
.site-layout {
    display: flex;
    min-height: 100svh;
}

/* ===== Sidebar ===== */
.site-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-card);
    border-right: 1px solid var(--color-border);
    position: fixed;
    top: 0;
    left: 0;
    height: 100svh;
    overflow-y: auto;
    z-index: 50;
    transition: transform 0.3s ease;
}

.site-sidebar::-webkit-scrollbar {
    width: 4px;
}

.site-sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
}

.sidebar-brand {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.3px;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    padding: 4px;
}

.sidebar-search {
    padding: 0 12px 12px;
}

.sidebar-search input {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: inherit;
    background: var(--color-bg);
    transition: border-color var(--transition);
}

.sidebar-search input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.sidebar-categories {
    padding: 0 0 16px;
}

/* Sidebar nav links (Accueil, Contact, Liens) */
.sidebar-nav-links {
    margin-bottom: 4px;
}

/* Sidebar links */
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    font-size: 0.85rem;
    color: var(--color-text);
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
    flex: 1;
    min-width: 0;
}

.sidebar-link:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

.sidebar-link.active {
    background: rgba(198, 151, 73, 0.08);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    font-weight: 600;
}

.sidebar-link-row:has(.sidebar-link.active) {
    background: rgba(198, 151, 73, 0.08);
}

.sidebar-link-row:has(.sidebar-link.active) .sidebar-toggle-btn {
    color: var(--color-accent);
}

.sidebar-home {
    padding: 10px 12px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-link-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-link-row {
    display: flex;
    align-items: center;
}

.sidebar-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px 10px;
    color: var(--color-text-light);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
    color: var(--color-text);
}

/* Chevron and dot */
.sidebar-chevron {
    flex-shrink: 0;
    transition: transform 0.2s;
}

.sidebar-chevron.open {
    transform: rotate(90deg);
}

.sidebar-dot {
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-border);
    flex-shrink: 0;
    margin: 0 4.5px;
}

/* Sidebar children */
.sidebar-children {
    display: none;
    overflow: hidden;
}

.sidebar-children.open {
    display: block;
}

.sidebar-child .sidebar-link {
    font-size: 0.82rem;
    color: var(--color-text-light);
}

.sidebar-child .sidebar-link:hover {
    color: var(--color-primary);
}

.sidebar-child .sidebar-link.active {
    color: var(--color-accent);
}

/* Sidebar item links (billets) */
.sidebar-item-link {
    font-size: 0.78rem;
    color: var(--color-text-light);
    padding-top: 4px;
    padding-bottom: 4px;
}

.sidebar-item-link:hover {
    color: var(--color-primary);
}

.sidebar-item-link.active {
    color: var(--color-accent);
    font-weight: 600;
    background: rgba(198, 151, 73, 0.08);
}

/* ===== Main Content ===== */
.site-main {
    flex: 1;
    min-width: 0;
    min-height: 100svh;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

.site-main > .site-footer {
    margin-top: auto;
}

.content-inner {
    padding: 24px 32px;
}

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a4f82 50%, var(--color-primary-light) 100%);
    padding: 48px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero .content-inner {
    padding: 0 32px;
    max-width: none;
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    position: relative;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    max-width: 550px;
    margin: 0 auto;
    position: relative;
    line-height: 1.7;
}

/* ===== Sections ===== */
.section {
    min-height: 50vh;
}

.section-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 40px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

.section-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 28px 0;
}

.home-intro {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 24px;
    line-height: 1.7;
}

/* ===== Category Header ===== */
.category-header { margin-bottom: 24px; }

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.category-description {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 800px;
}

/* ===== Category Cards Grid ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.category-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
    display: block;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.category-card-image {
    aspect-ratio: 2 / 1;
    overflow: hidden;
    background: linear-gradient(135deg, #edf2f7 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.category-card:hover .category-card-image img { transform: scale(1.05); }

.category-card-placeholder { color: var(--color-text-light); }

.category-card-body { padding: 14px 16px; }

.category-card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.category-card-count {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* ===== Item Cards Grid ===== */
.items-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.item-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
    display: block;
}

.item-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.item-card-image {
    aspect-ratio: 2 / 1;
    overflow: hidden;
    background: #f7fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.item-img-front,
.item-img-back {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    transition: opacity 0.4s ease;
}

.item-img-front {
    opacity: 1;
    z-index: 2;
}

.item-img-back {
    opacity: 0;
    z-index: 1;
}

.item-card:hover .item-img-front {
    opacity: 0;
}

.item-card:hover .item-img-back {
    opacity: 1;
}

.item-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 10px;
    transition: transform 0.4s ease;
}

.item-card:hover .item-card-image img { transform: scale(1.03); }

.item-card-placeholder { color: var(--color-border); }

.item-card-body { padding: 12px 14px; }

.item-card-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    line-height: 1.3;
}

.item-card-denomination {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    padding: 1px 7px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-right: 4px;
}

.item-card-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.item-card-category {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-light);
    margin-top: 3px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border-light);
}

.breadcrumb .content-inner {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    font-size: 0.82rem;
    padding-top: 10px;
    padding-bottom: 10px;
}

.breadcrumb-link {
    color: var(--color-primary);
    transition: color var(--transition);
}

.breadcrumb-link:hover { color: var(--color-accent); }

.breadcrumb-sep {
    color: var(--color-text-light);
    margin: 0 4px;
}

.breadcrumb-current { color: var(--color-text-light); }

/* ===== Item Detail ===== */
.item-detail { max-width: 900px; }

.item-detail-header { margin-bottom: 20px; }

.item-detail-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.item-detail-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.denomination-badge {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.date-badge {
    display: inline-block;
    background: var(--color-border-light);
    color: var(--color-text);
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* ===== Gallery ===== */
.item-gallery { margin-bottom: 24px; }

.gallery-main {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    padding: 16px;
    text-align: center;
    margin-bottom: 10px;
    overflow: hidden;
}

.gallery-main-img {
    max-height: 450px;
    margin: 0 auto;
    cursor: zoom-in;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.gallery-main-img:hover { transform: scale(1.02); }

.gallery-thumbs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.gallery-thumb {
    position: relative;
    width: 72px;
    height: 54px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    background: white;
    padding: 0;
    transition: border-color var(--transition);
}

.gallery-thumb:hover,
.gallery-thumb.active { border-color: var(--color-accent); }

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 2px;
}

.thumb-label {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 0.55rem;
    padding: 1px 0;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* ===== Item Description / Notes ===== */
.item-description,
.item-notes {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    padding: 20px;
    margin-bottom: 12px;
}

.item-description h2,
.item-notes h2 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border-light);
}

.item-text {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text);
}

/* ===== Item Navigation ===== */
.item-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-light);
}

.item-nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.82rem;
    color: var(--color-primary);
    transition: all var(--transition);
}

.item-nav-link:hover { background: var(--color-border-light); }
.item-nav-link.back { color: var(--color-text-light); font-size: 0.78rem; }

/* ===== Lightbox ===== */
.lightbox {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.92);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.lightbox.active { display: flex; }

.lightbox-close {
    position: absolute;
    top: 16px; right: 20px;
    background: none;
    border: none;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
    z-index: 10;
    transition: opacity 0.2s;
}

.lightbox-close:hover { opacity: 0.7; }

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 16px 10px;
    border-radius: 6px;
    transition: background 0.2s;
    z-index: 10;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.2); }

.lightbox-content {
    max-width: 90%;
    max-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

.lightbox-caption {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 16px;
}

/* ===== Search ===== */
.search-form { margin-bottom: 24px; }

.search-input-group {
    display: flex;
    gap: 8px;
    max-width: 500px;
}

.search-input-group input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color var(--transition);
    background: var(--color-card);
}

.search-input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-results-count {
    color: var(--color-text-light);
    margin-bottom: 16px;
    font-size: 0.85rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-light); }

/* ===== 404 Page ===== */
.section-404 { padding: 80px 0; }

.error-code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 8px;
    opacity: 0.3;
}

.error-message {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-primary);
    color: rgba(255,255,255,0.7);
    padding: 32px 0;
}

.footer-inner { text-align: center; }

.footer-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 6px;
}

.footer-tagline { font-size: 0.8rem; margin-bottom: 16px; }

.footer-bottom {
    font-size: 0.75rem;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-link {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-link:hover { color: var(--color-accent); }

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-light); }
.mt-4 { margin-top: 24px; }

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Sidebar overlay (mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 99;
}

.sidebar-overlay.active { display: block; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    :root { --sidebar-width: 240px; }
    .content-inner { padding: 20px 24px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar-toggle-mobile { display: flex; }
    .sidebar-close { display: block; }

    .site-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100svh;
        transform: translateX(-100%);
        z-index: 300;
        box-shadow: none;
        width: 90vw;
    }

    .site-sidebar .sidebar-link {
        font-size: 0.95rem;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .site-sidebar .sidebar-item-link {
        font-size: 0.88rem;
    }

    .site-sidebar .sidebar-brand {
        font-size: 1.15rem;
    }

    .site-sidebar .sidebar-search input {
        font-size: 0.95rem;
        padding: 10px 12px;
    }

    .site-sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    }

    .site-layout { display: block; }
    .site-main { margin-left: 0; }

    .content-inner { padding: 16px; }

    .hero { padding: 36px 0; }
    .hero-title { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.9rem; }

    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .items-grid { grid-template-columns: repeat(2, 1fr); }

    .item-detail-title { font-size: 1.2rem; }
    .gallery-main-img { max-height: 280px; }

    .item-nav { flex-direction: column; text-align: center; }
    .item-nav-link.prev span, .item-nav-link.next span { display: none; }

    .search-input-group { flex-direction: column; }
    .lightbox-prev, .lightbox-next { padding: 12px 8px; }
}

@media (max-width: 480px) {
    .category-grid { grid-template-columns: 1fr; }
    .items-grid { grid-template-columns: 1fr; gap: 12px; }
}