:root {
    /* --- 🎨 TA CHARTE GRAPHIQUE --- */
    /* REMPLACE CE CODE PAR LA COULEUR DOMINANTE DE TON LOGO */
    --brand-primary: #0d6efd;  /* <--- Change moi ! (Ex: #c0392b pour rouge, #27ae60 pour vert) */

    /* Couleurs secondaires (calculées automatiquement ou à ajuster) */
    --brand-hover: color-mix(in srgb, var(--brand-primary), black 10%);
    --brand-light: color-mix(in srgb, var(--brand-primary), white 90%);
    --text-dark: #2c3e50;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; /* Police moderne type Microsoft */
    color: var(--text-dark);
}

/* --- 1. BARRE DE NAVIGATION PRO --- */
.navbar {
    background-color: white !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); /* Ombre douce et moderne */
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-dark) !important;
}

.nav-link {
    font-weight: 500;
    color: #6c757d;
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--brand-primary) !important;
}

/* Avatar utilisateur dans le menu */
.user-avatar {
    background-color: var(--brand-light);
    color: var(--brand-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--brand-primary);
}

/* --- 2. BOUTONS PERSONNALISÉS --- */
/* On écrase le bleu bootstrap par TA couleur */
.btn-primary {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    border-radius: 8px; /* Coins plus arrondis */
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--brand-hover);
    border-color: var(--brand-hover);
    transform: translateY(-2px); /* Petit effet de levier */
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-outline-primary {
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.btn-outline-primary:hover {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
}

/* --- 3. CARTES ET OMBRES --- */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Effet au survol des cartes du dashboard */
.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Icônes dans des cercles colorés */
.icon-circle {
    width: 60px;
    height: 60px;
    background-color: var(--brand-light);
    color: var(--brand-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

/* --- 4. ALERTE FLASH --- */
.alert {
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}