:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #3a0ca3;
    --accent-color: #4cc9f0;
    --accent-secondary: #7209b7;
    --success-color: #06d6a0;
    --warning-color: #ffd166;
    --danger-color: #ef476f;
    --light-color: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #adb5bd;
    --dark-color: #212529;
    --sidebar-width: 280px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== BASE STYLES ===== */
* {
    box-sizing: border-box;
}

body {
    background-color: #f5f7fb;
    color: var(--dark-color);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ===== SIDEBAR ===== */
#sidebar {
    min-height: 100vh;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    z-index: 100;
}

.sidebar-header {
    padding: 25px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h3 {
    color: white;
    font-weight: 600;
    font-size: 1.5rem;
    margin: 0;
    letter-spacing: 0.5px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    padding: 14px 20px;
    margin: 4px 15px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateX(5px);
}

.nav-link.active {
    color: white;
    background-color: rgba(255, 255, 255, 0.15);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background-color: var(--accent-color);
    border-radius: 0 4px 4px 0;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* ===== CONTENU PRINCIPAL ===== */
.content-section {
    display: none;
    padding: 30px;
    background-color: transparent;
    animation: fadeInUp 0.5s ease-out;
}

.content-section.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== NAVBAR SUPÉRIEURE ===== */
.navbar {
    background-color: white;
    box-shadow: var(--shadow-sm);
    padding: 15px 30px;
    z-index: 99;
    position: sticky;
    top: 0;
}

.navbar-brand {
    font-weight: 600;
    color: var(--primary-color);
}

/* ===== CARTES  ===== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
    background-color: white;
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid var(--light-gray);
    padding: 20px;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-body {
    padding: 25px;
}

/* ===== KPI CARDS AMÉLIORÉES ===== */
.kpi-card {
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    background: linear-gradient(135deg, white 0%, #fafbff 100%);
    height: 100%;
}

.kpi-card .card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: rgba(67, 97, 238, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.kpi-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1;
    margin: 10px 0;
}

.kpi-label {
    color: var(--medium-gray);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-bottom: 5px;
}

.kpi-change {
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 12px;
}

.kpi-change.positive {
    color: var(--success-color);
    background-color: rgba(6, 214, 160, 0.1);
}

.kpi-change.negative {
    color: var(--danger-color);
    background-color: rgba(239, 71, 111, 0.1);
}

/* ===== TABLEAUX  ===== */
.table {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table th {
    font-weight: 600;
    color: var(--dark-color);
    border-top: none;
    padding: 16px 20px;
    background-color: #f8fafc;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--light-gray);
}

.table td {
    padding: 16px 20px;
    vertical-align: middle;
    border-color: var(--light-gray);
}

.table-hover tbody tr:hover {
    background-color: rgba(67, 97, 238, 0.04);
    transition: background-color 0.2s ease;
}

/* ===== BADGES ===== */
.badge {
    padding: 6px 12px;
    font-weight: 500;
    border-radius: 20px;
    font-size: 0.8rem;
    letter-spacing: 0.3px;
}

.badge.bg-success {
    background-color: var(--success-color) !important;
}

.badge.bg-warning {
    background-color: var(--warning-color) !important;
    color: var(--dark-color);
}

.badge.bg-danger {
    background-color: var(--danger-color) !important;
}

/* ===== BOUTONS ===== */
.btn {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 4px 6px rgba(67, 97, 238, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(67, 97, 238, 0.25);
}

.btn-outline-primary {
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ===== FORMULAIRES ===== */
.form-control, .form-select {
    padding: 12px 16px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.15);
    transform: translateY(-1px);
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 8px;
}

/* ===== CARTES DE DÉPARTEMENT ===== */
.department-card {
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--light-gray);
    height: 100%;
}

.department-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 20px rgba(67, 97, 238, 0.1);
}

.department-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* ===== UTILISATEURS API ===== */
.api-user-card {
    text-align: center;
    padding: 25px 15px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    background-color: white;
    border: 1px solid var(--light-gray);
}

.api-user-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.api-user-img {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 4px solid white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    padding: 4px;
}

.api-user-name {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.api-user-email {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    #sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        z-index: 1000;
        width: var(--sidebar-width);
        box-shadow: var(--shadow-lg);
    }
    
    #sidebar.active {
        left: 0;
    }
    
    main {
        margin-left: 0;
        padding: 0;
    }
    
    .content-section {
        padding: 20px 15px;
    }
    
    .navbar {
        padding: 12px 20px;
    }
    
    .kpi-card {
        margin-bottom: 20px;
    }
    
    .table-responsive {
        border-radius: var(--border-radius);
        overflow: hidden;
    }
}

@media (min-width: 769px) and (max-width: 992px) {
    #sidebar {
        width: 230px;
    }
    
    .content-section {
        padding: 25px;
    }
}

/* ===== ANIMATIONS SUPPLÉMENTAIRES ===== */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(25px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.new-item {
    animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ===== SCROLLBAR PERSONNALISÉE ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ===== STATUT ET ÉTATS VISUELS ===== */
.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-active {
    background-color: var(--success-color);
    box-shadow: 0 0 0 2px rgba(6, 214, 160, 0.2);
}

.status-inactive {
    background-color: var(--medium-gray);
    box-shadow: 0 0 0 2px rgba(173, 181, 189, 0.2);
}

.status-pending {
    background-color: var(--warning-color);
    box-shadow: 0 0 0 2px rgba(255, 209, 102, 0.2);
}
footer {
    margin-top: 40px;
    background-color: var(--dark-color);
    color: white;
}
footer div {
    padding: 20px 30px;
    text-align: center;
}
footer small {
    font-size: 0.9rem;
    color: #cccccc;
}