/* ============================================
   Variables CSS
   ============================================ */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ============================================
   Reset et base
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

/* ============================================
   Pages
   ============================================ */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* ============================================
   Page de connexion
   ============================================ */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    color: var(--primary-color);
    margin-bottom: 8px;
    text-align: center;
}

.login-box .subtitle {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 30px;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    background: var(--card-bg);
    padding: 15px 30px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand h2 {
    color: var(--primary-color);
    font-size: 22px;
}

.navbar-menu {
    display: flex;
    gap: 10px;
}

.nav-link {
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    background: var(--bg-color);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

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

/* ============================================
   Main content
   ============================================ */
.main-content {
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.content-section {
    display: none;
}

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

/* ============================================
   Section header
   ============================================ */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 28px;
    color: var(--text-color);
}

.section-actions {
    display: flex;
    gap: 10px;
}

/* ============================================
   KPI Cards
   ============================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.kpi-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.kpi-card h3 {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.kpi-value {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
}

.kpi-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 5px;
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.dashboard-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.dashboard-card h3 {
    margin-bottom: 20px;
    color: var(--text-color);
}

.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.activity-item:last-child {
    border-bottom: none;
}

/* ============================================
   Filters
   ============================================ */
.filters-bar {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.search-input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
}

.filter-select {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    min-width: 150px;
}

/* ============================================
   Tables
   ============================================ */
.table-container {
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--bg-color);
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    cursor: pointer;
    user-select: none;
}

.data-table th:hover {
    background: var(--border-color);
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: var(--bg-color);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: #475569;
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    padding-right: 90px;
}

.password-toggle-btn {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    padding: 4px 6px;
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    line-height: 1.2;
}

.password-toggle-btn:hover {
    text-decoration: underline;
}

.password-toggle-btn:focus {
    outline: none;
    color: var(--primary-dark);
}

.password-field-actions {
    margin-top: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* ============================================
   Badge
   ============================================ */
.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

/* ============================================
   Modal
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-close:hover {
    color: var(--text-color);
}

/* ============================================
   Messages
   ============================================ */
.error-message {
    color: var(--danger-color);
    background: #fee2e2;
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    display: none;
}

.error-message.active {
    display: block;
}

.success-message {
    color: var(--success-color);
    background: #d1fae5;
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.import-status {
    border-radius: 8px;
    border: 1px solid;
    padding: 10px 12px;
    margin: 12px 0 16px;
    font-weight: 500;
}

.import-status-ok {
    background: #d1fae5;
    border-color: #86efac;
    color: #065f46;
}

.import-status-warning {
    background: #fef3c7;
    border-color: #fcd34d;
    color: #92400e;
}

.import-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.import-stat-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    padding: 12px;
}

.import-stat-card span {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 4px;
}

.import-stat-card strong {
    font-size: 22px;
    line-height: 1;
}

.import-errors-panel {
    margin-top: 16px;
}

.import-errors-panel h4 {
    margin-bottom: 10px;
    font-size: 16px;
}

.import-errors-table-wrapper {
    max-height: 260px;
    overflow: auto;
}

.import-errors-table th,
.import-errors-table td {
    vertical-align: top;
}

.import-errors-table td:nth-child(3) {
    min-width: 240px;
    white-space: normal;
    word-break: break-word;
}

/* ============================================
   Loading
   ============================================ */
.loading-overlay {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

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

/* ============================================
   Cards Grid
   ============================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* ============================================
   Administration
   ============================================ */
.permission-groups {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.permission-group {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    background: var(--bg-color);
}

.permission-group h4 {
    margin-bottom: 10px;
    font-size: 14px;
    text-transform: capitalize;
    color: var(--text-color);
}

.permission-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
    line-height: 1.4;
}

.permission-item:last-child {
    margin-bottom: 0;
}

.permission-item input {
    margin-top: 2px;
}

.readonly-note {
    background: #fef3c7;
    border: 1px solid #facc15;
    color: #92400e;
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
    font-size: 14px;
}

.settings-card h3 {
    margin-bottom: 8px;
}

.settings-form-note {
    margin-top: 8px;
    font-size: 14px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-menu {
        width: 100%;
        flex-wrap: wrap;
    }

    .main-content {
        padding: 15px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .filters-bar {
        flex-direction: column;
    }

    .table-container {
        overflow-x: auto;
    }
}