:root {
    --bg-color: #121214;
    --card-bg: #1a1a1e;
    --card-hover: #222227;
    --text-color: #e4e4e7;
    --text-muted: #a1a1aa;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #2d2d34;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.5;
    padding: 2rem 1rem;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

/* Accueil : Séparation en 2 blocs (Grid) */
.lang-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .lang-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.lang-block {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.5rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, background-color 0.2s;
}

.lang-block:hover {
    background-color: var(--card-hover);
    transform: translateY(-2px);
    border-color: var(--accent);
}

.lang-block h2 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

/* Liste des fichiers */
.nav-back {
    display: inline-block;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
}

.nav-back:hover {
    color: var(--accent);
}

.file-list {
    list-style: none;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.file-item {
    border-bottom: 1px solid var(--border);
}

.file-item:last-child {
    border-bottom: none;
}

.file-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.1s;
}

.file-link:hover {
    background-color: var(--card-hover);
}

.file-icon {
    margin-right: 1rem;
    color: var(--accent);
}

.empty-msg {
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
}

/* Styles pour l'arborescence des sous-dossiers */
.folder-item {
    padding: 0.5rem 1rem;
    list-style: none;
}
.folder-name {
    display: block;
    font-weight: bold;
    color: var(--text-muted);
    margin-top: 0.75rem;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.folder-item .file-list {
    margin-left: 1rem;
    border-left: 2px solid var(--border);
    border-radius: 0;
}