/* --- Variables et Charte Graphique --- */
:root {
    --couleur-fond: #ffffff;
    --couleur-texte: #2b2b2b;
    --couleur-secondaire: #666666;
    --couleur-accent: #b87354; /* Brun terracotta */
    
    --police-titre: 'Futura', 'Century Gothic', 'Montserrat', sans-serif;
    --police-texte: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    
    --espacement-global: 5rem;
    --bordure-fine: 1px solid #e0e0e0;
}
a {
    /* Supprime la couleur bleue et utilise celle du texte environnant */
    color: inherit; 
    
    /* Supprime le soulignement par défaut */
    text-decoration: none; 
    
    /* Applique le gras */
    font-weight: bold; 
}

/* Optionnel : Conserver un indicateur au survol pour l'ergonomie (UX) */
a:hover {
    opacity: 0.8;
    /* Ou une légère variation de couleur */
}

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

html { scroll-behavior: smooth; }

body {
    background-color: var(--couleur-fond);
    color: var(--couleur-texte);
    font-family: var(--police-texte);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Navigation Principale --- */
.main-nav {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.98);
    border-bottom: var(--bordure-fine);
    z-index: 1000;
    padding: 1.25rem 2rem;
}

.nav-container { max-width: 1200px; margin: 0 auto; }
.nav-links { list-style: none; display: flex; gap: 2.5rem; }

.nav-links a {
    text-decoration: none;
    color: var(--couleur-secondaire);
    font-family: var(--police-titre);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--couleur-accent); }

/* --- Conteneur et En-tête --- */
.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--espacement-global) 2rem;
}

.document-header { margin-bottom: var(--espacement-global); }

.main-title {
    font-family: var(--police-titre);
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    color: var(--couleur-texte);
}

.subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--couleur-secondaire);
    max-width: 800px;
    line-height: 1.5;
    margin-bottom: 2rem;
}

/* Liens hypertexte */
a.external-link, a.inline-link {
    color: var(--couleur-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

a.external-link:hover, a.inline-link:hover {
    border-bottom: 1px solid var(--couleur-accent);
}

/* --- Sections --- */
.section-block {
    margin-bottom: var(--espacement-global);
    scroll-margin-top: 6rem; 
}

.intro-text {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 2.5rem;
    color: var(--couleur-texte);
}

/* --- Image principale --- */
.illustration-wrapper { width: 100%; margin: 0 0 3rem 0; }
.full-image { display: block; width: 100%; max-width: 100%; height: auto; object-fit: contain; }

/* --- Grille Commune --- */
.spaces-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 3rem 2.5rem;
    padding-top: 3rem;
    border-top: var(--bordure-fine);
}

.space-card { display: flex; flex-direction: column; }

.space-title {
    font-family: var(--police-titre);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--couleur-texte);
    padding-left: 1rem;
    border-left: 3px solid var(--couleur-accent);
}

.space-detail, .space-subdetail {
    font-size: 0.95rem;
    color: var(--couleur-secondaire);
    margin-bottom: 0.5rem;
    padding-left: 1rem;
}

.space-detail strong, .space-subdetail strong {
    font-weight: 600;
    color: var(--couleur-texte);
}

/* --- Grille des Croquis Spécifique --- */
.sketch-grid { margin-top: 2rem; }

.sketch-card .zoom-link {
    display: block;
    margin-bottom: 1rem;
    overflow: hidden; 
    border-left: 3px solid var(--couleur-accent); 
    transition: border-color 0.3s ease;
    cursor: zoom-in;
}

.sketch-card .zoom-link:hover { border-color: var(--couleur-texte); }

.sketch-card .thumbnail-img {
    display: block;
    width: 100%;
    height: 180px; 
    object-fit: cover; 
    transition: transform 0.3s ease;
}

.sketch-card .zoom-link:hover .thumbnail-img { transform: scale(1.05); }

.sketch-card .space-title {
    padding-left: 0.5rem;
    border-left: none; 
}

/* --- Pied de page (Footer) --- */
.site-footer {
    border-top: var(--bordure-fine);
    padding: 3rem 2rem;
    background-color: #fafafa;
}

.footer-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: flex-start; }
.footer-links { display: flex; gap: 2.5rem; flex-wrap: wrap; }

.footer-links a {
    color: var(--couleur-secondaire);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--police-titre);
}

.footer-links a:hover { color: var(--couleur-texte); }

/* --- Responsive (Mobile) --- */
@media (max-width: 768px) {
    :root { --espacement-global: 3rem; }
    .main-title { font-size: 2.75rem; }
    .nav-links { gap: 1.5rem; flex-direction: column; text-align: center; }
    .footer-links { flex-direction: column; gap: 1.5rem; }
    .spaces-grid { gap: 2.5rem 1rem; }
}

/* --- Écran de connexion --- */
.login-wrapper {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 100vh; background-color: var(--couleur-fond); padding: 2rem;
}

.login-image {
    max-width: 600px; width: 100%; height: auto; margin-bottom: 3rem; object-fit: contain;
}

.auth-form {
    display: flex; flex-direction: column; align-items: center; gap: 1.5rem;
    width: 100%; max-width: 300px;
}

#pass-input {
    width: 100%; padding: 0.75rem; border: none; border-bottom: 1px solid var(--couleur-texte);
    background: transparent; font-family: var(--police-texte); font-size: 1rem;
    text-align: center; outline: none; transition: border-color 0.3s ease;
}

#pass-input:focus { border-bottom: 2px solid var(--couleur-accent); }

.auth-btn {
    background: transparent; border: 1px solid var(--couleur-texte); color: var(--couleur-texte);
    padding: 0.5rem 2rem; font-family: var(--police-titre); font-size: 0.85rem;
    text-transform: uppercase; letter-spacing: 0.05em; cursor: pointer; transition: all 0.3s ease;
}

.auth-btn:hover { background: var(--couleur-texte); color: var(--couleur-fond); }

.error-message { display: none; color: var(--couleur-accent); margin-top: 1rem; font-size: 0.9rem; }

.hidden-content { display: none !important; }

/* --- Boîte Modale de Zoom (Lightbox) --- */
.modal {
    display: none; position: fixed; z-index: 2000; padding-top: 50px; left: 0; top: 0;
    width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.9); backdrop-filter: blur(5px);
}

.modal-content {
    display: block; margin: auto; max-width: 90%; max-height: 85vh; object-fit: contain;
    border: 2px solid rgba(255,255,255,0.1); animation-name: zoom; animation-duration: 0.3s;
}

@keyframes zoom { from {transform:scale(0)} to {transform:scale(1)} }

.close-modal {
    position: absolute; top: 20px; right: 35px; color: #f1f1f1; font-size: 40px;
    font-weight: bold; transition: 0.2s; cursor: pointer; user-select: none;
}

.close-modal:hover, .close-modal:focus { color: var(--couleur-accent); text-decoration: none; }

@media (max-width: 768px) {
    .modal-content { max-width: 95%; margin-top: 20px; }
    .close-modal { right: 20px; top: 10px; }
}