/* --- VARIABLES THEME "PRO DARK IDE" --- */
:root {
    --bg-app: #09090b;        /* Noir profond (Zinc 950) */
    --bg-sidebar: #18181b;    /* Gris très sombre (Zinc 900) */
    --bg-surface: #27272a;    /* Surface d'élément (Zinc 800) */
    --bg-code: #0d1117;       /* Noir bleuté type GitHub Dark */
    
    --border-color: #3f3f46;  /* Bordure subtile (Zinc 700) */
    --border-light: #52525b;
    
    --text-muted: #a1a1aa;    /* Gris clair pour lecture */
    --text-primary: #f4f4f5;  /* Blanc cassé pour titres */
    
    --accent-primary: #3b82f6; /* Bleu vif (Active state) */
    --accent-hover: rgba(59, 130, 246, 0.1); /* Bleu transparent */
    
    --icon-folder: #eab308;    /* Jaune pour les dossiers */
    --icon-file: #60a5fa;      /* Bleu pour les fichiers */
    --icon-php: #8b5cf6;       /* Violet PHP */
}

/* --- RESET & SCROLLBARS --- */
* {
    box-sizing: border-box;
}

body { 
    display: flex; 
    height: 100vh; 
    margin: 0; 
    font-family: 'Inter', system-ui, sans-serif; 
    background-color: var(--bg-app);
    color: var(--text-primary);
    overflow: hidden;
}

/* Custom Scrollbar Pro */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: transparent; 
}
::-webkit-scrollbar-thumb {
    background: var(--border-color); 
    border-radius: 5px;
    border: 2px solid var(--bg-app); /* Effet de padding interne */
}
::-webkit-scrollbar-thumb:hover {
    background: var(--border-light); 
}

/* --- BARRE LATÉRALE (SIDEBAR) --- */
#sidebar { 
    width: 300px; 
    background-color: var(--bg-sidebar); 
    border-right: 1px solid var(--border-color); 
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
}

#sidebar ul { 
    list-style-type: none; 
    padding: 0; 
    margin: 0;
}

#sidebar .root-ul {
    padding: 15px 0;
    overflow-y: auto;
    flex-grow: 1;
}

#sidebar ul ul {
    padding-left: 15px; /* Indentation propre */
    position: relative;
}

/* Ligne de repère d'indentation (Guide visuel type IDE) */
#sidebar ul ul::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0; left: 6px;
    width: 1px;
    background-color: var(--border-color);
}

/* Éléments de l'arborescence */
.tree-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 20px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: all 0.15s ease;
    cursor: pointer;
    position: relative;
}

.tree-item i {
    width: 16px;
    text-align: center;
    font-size: 0.95rem;
}

.tree-item.folder i { color: var(--icon-folder); }
.tree-item.file i { color: var(--text-muted); }
.tree-item .fa-php { color: var(--icon-php); }
.tree-item .fa-css3-alt { color: #38bdf8; }
.tree-item .fa-html5 { color: #f97316; }

.tree-item:hover {
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

/* --- ZONE PRINCIPALE --- */
#content-area { 
    flex: 1; 
    padding: 25px 40px; 
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* --- FIL D'ARIANE PRO --- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 30px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.breadcrumb .separator {
    font-size: 0.7rem;
    color: var(--border-light);
}

.breadcrumb .current-file {
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* --- VUE EXPLORATEUR (GRILLE) --- */
.content-header h1 {
    font-size: 1.8rem;
    margin: 0 0 25px 0;
    font-weight: 700;
}

.explorer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
}

.explorer-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.explorer-item:hover {
    background-color: #3f3f46;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.explorer-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}
.folder-color { color: var(--icon-folder); }
.file-color { color: var(--icon-file); }

/* --- VUE CODE (FENÊTRE IDE) --- */
.ide-window {
    background-color: var(--bg-code);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    flex-grow: 1; /* Prend l'espace restant */
}

.ide-header {
    background-color: #161b22;
    border-bottom: 1px solid var(--border-color);
    padding: 10px 15px;
    display: flex;
    align-items: center;
}

/* Boutons macOS */
.mac-buttons {
    display: flex;
    gap: 8px;
    margin-right: 20px;
}

.mac-buttons span {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.mac-buttons .close { background-color: #ff5f56; }
.mac-buttons .minimize { background-color: #ffbd2e; }
.mac-buttons .maximize { background-color: #27c93f; }

.file-tab {
    background-color: var(--bg-code);
    padding: 6px 15px;
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    transform: translateY(1px); /* Connecte visuellement l'onglet au body */
}

.ide-body {
    padding: 20px;
    overflow: auto;
}

.ide-body pre {
    margin: 0;
    background: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
}

.ide-body code {
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    font-size: 14px;
    line-height: 1.6;
    color: #a5d6ff; /* Bleu clair type GitHub Dark pour le texte brut */
}

/* --- VUE SCINDÉE (CODE À GAUCHE / EXPLICATIONS À DROITE) --- */
.split-view {
    display: flex;
    gap: 25px;
    height: 100%; /* Prend toute la hauteur restante */
    align-items: stretch;
}

/* Colonne du code (prend plus d'espace, ex: 60%) */
.code-column {
    flex: 1.5; 
    display: flex;
    flex-direction: column;
    min-width: 0; /* Évite que le code très long casse le layout */
}

/* Colonne des explications (prend le reste de l'espace, ex: 40%) */
.explanation-column {
    flex: 1; 
    display: flex;
    flex-direction: column;
    min-width: 300px; /* S'assure que le panneau ne soit jamais trop écrasé */
}

/* Design du panneau d'explications */
.explanation-panel {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 25px;
    height: 100%;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.explanation-panel h3 {
    margin-top: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.explanation-panel h3 i {
    color: var(--accent-primary);
}

.explanation-content {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.explanation-content strong {
    color: var(--text-primary);
}

/* Style de liste avec des checks verts */
.pro-list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.pro-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.pro-list li i {
    position: absolute;
    left: 0;
    top: 4px;
    color: #10b981; /* Vert "Succès" émeraude */
    font-size: 0.9rem;
}

/* Correction cosmétique pour les fichiers qui incluent des balises H1 (comme ton routes.php) */
.ide-body h1 {
    font-size: 1.4rem;
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}