/* Style global - Thème bleu/gris professionnel */
:root {
    --primary-blue: #2563eb;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --dark-gray: #374151;
    --medium-gray: #6b7280;
    --light-gray: #f3f4f6;
    --border-gray: #e5e7eb;
    --success-green: #10b981;
    --warning-orange: #f59e0b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Navigation */
.main-nav {
    background: white;
    border-bottom: 1px solid var(--border-gray);
    padding: 0 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-item {
    padding: 1rem 1.5rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.nav-item:hover {
    background-color: var(--light-blue);
    border-bottom-color: var(--secondary-blue);
}

.nav-item.active {
    border-bottom-color: var(--primary-blue);
    color: var(--primary-blue);
    font-weight: 600;
}

/* Contenu principal */
.main-content {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Cartes */
.card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-gray);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-blue);
}

.card-title {
    color: var(--primary-blue);
    font-size: 1.2rem;
    font-weight: 600;
}

/* Boutons */
.btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--secondary-blue);
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    border: 1px solid var(--border-gray);
}

.btn-secondary:hover {
    background-color: var(--border-gray);
}

.btn-success {
    background-color: var(--success-green);
    color: white;
}

.btn-warning {
    background-color: var(--warning-orange);
    color: white;
}

/* Tableaux */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table th {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--secondary-blue);
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-gray);
}

.table tr:hover {
    background-color: var(--light-gray);
}

/* Modules */
.modules-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.module-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    border: 2px solid var(--border-gray);
    position: relative;
    transition: all 0.3s;
}

.module-card.active {
    border-color: var(--primary-blue);
    background-color: var(--light-blue);
}

.module-card:hover {
    transform: translateY(-3px);
}

.module-title {
    color: var(--dark-gray);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.module-price {
    color: var(--primary-blue);
    font-weight: 700;
    font-size: 1.5rem;
}

.module-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--success-green);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Formulaires */
.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* KPI */
.kpi-card {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: white;
}

.kpi-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

.kpi-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .main-content {
        padding: 1rem;
    }
}