/**
 * VA Elevation - Feuille de styles principale
 * Charte graphique: Firefly, Wild Sand, Mako, Oslo Gray
 */

/* ============================================================
   CSS Variables - Charte graphique
   ============================================================ */
:root {
    /* Couleurs principales */
    --firefly: #0b182e;
    --firefly-light: #162a4d;
    --wild-sand: #f7f7f7;
    --mako: #434854;
    --oslo-gray: #898e98;
    
    /* Couleurs fonctionnelles */
    --success: #10b981;
    --success-bg: #dcfce7;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    
    /* Bordures et ombres */
    --border-color: #e1e5eb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* Espacements */
    --sidebar-width: 260px;
    --header-height: 65px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--mako);
    background-color: var(--wild-sand);
    min-height: 100vh;
}

a {
    color: var(--firefly);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--firefly-light);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================================
   Layout - Dashboard
   ============================================================ */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--firefly);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: var(--transition);
}

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

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo .logo-icon {
    width: 44px;
    height: 44px;
    background: white;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--firefly);
}

.sidebar-logo .logo-text {
    font-size: 18px;
    font-weight: 700;
}

.sidebar-logo .logo-subtitle {
    font-size: 11px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Sidebar User */
.sidebar-user {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-user .user-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
}

.sidebar-user .user-info {
    flex: 1;
    overflow: hidden;
}

.sidebar-user .user-name {
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-role {
    font-size: 12px;
    opacity: 0.7;
    text-transform: capitalize;
}

/* Sidebar Navigation */
.sidebar-nav {
    padding: 15px 0;
}

.nav-section {
    margin-bottom: 10px;
}

.nav-section-title {
    padding: 10px 20px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.5;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: white;
}

.nav-link .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.nav-link .nav-text {
    font-size: 14px;
}

.nav-link .nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-title h1 {
    font-size: 22px;
    font-weight: 600;
    color: var(--mako);
}

.header-title p {
    font-size: 13px;
    color: var(--oslo-gray);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Page Content */
.page-content {
    flex: 1;
    padding: 30px;
}

/* Footer */
.main-footer {
    padding: 20px 30px;
    border-top: 1px solid var(--border-color);
    background: white;
    text-align: center;
    color: var(--oslo-gray);
    font-size: 13px;
}

/* ============================================================
   Components - Cards
   ============================================================ */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--mako);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--wild-sand);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue {
    background: var(--info-bg);
    color: var(--info);
}

.stat-icon.green {
    background: var(--success-bg);
    color: var(--success);
}

.stat-icon.orange {
    background: var(--warning-bg);
    color: var(--warning);
}

.stat-icon.red {
    background: var(--danger-bg);
    color: var(--danger);
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--oslo-gray);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--firefly);
    line-height: 1.2;
}

.stat-change {
    font-size: 12px;
    margin-top: 4px;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

/* ============================================================
   Components - Tables
   ============================================================ */
.table-container {
    overflow-x: auto;
}

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

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--wild-sand);
    font-weight: 600;
    font-size: 13px;
    color: var(--oslo-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr:hover {
    background: rgba(247, 247, 247, 0.5);
}

.data-table td {
    font-size: 14px;
    color: var(--mako);
}

/* Table Actions */
.table-actions {
    display: flex;
    gap: 8px;
}

.table-actions .btn-icon {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 14px;
}

.table-actions .btn-icon.view {
    background: var(--info-bg);
    color: var(--info);
}

.table-actions .btn-icon.edit {
    background: var(--warning-bg);
    color: var(--warning);
}

.table-actions .btn-icon.delete {
    background: var(--danger-bg);
    color: var(--danger);
}

.table-actions .btn-icon:hover {
    transform: scale(1.1);
}

/* ============================================================
   Components - Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

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

.btn-primary:hover {
    background: var(--firefly-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--wild-sand);
    color: var(--mako);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: #e9e9e9;
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-outline:hover {
    background: var(--firefly);
    color: white;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--mako);
}

.form-group label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: var(--transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--firefly);
    box-shadow: 0 0 0 4px rgba(11, 24, 46, 0.1);
}

.form-control::placeholder {
    color: var(--oslo-gray);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-help {
    font-size: 12px;
    color: var(--oslo-gray);
    margin-top: 6px;
}

/* ============================================================
   Components - Alerts
   ============================================================ */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
}

.alert-success {
    background: var(--success-bg);
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: var(--danger-bg);
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: var(--warning-bg);
    color: #92400e;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: var(--info-bg);
    color: #1e40af;
    border-left: 4px solid var(--info);
}

.alert-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition);
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================================
   Components - Badges & Status
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

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

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

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

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

.badge-secondary {
    background: #e5e7eb;
    color: var(--oslo-gray);
}

/* Status indicators */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-dot.active {
    background: var(--success);
}

.status-dot.inactive {
    background: var(--oslo-gray);
}

.status-dot.pending {
    background: var(--warning);
}

/* Task status */
.status-todo {
    background: #e5e7eb;
    color: var(--mako);
}

.status-progress {
    background: var(--info-bg);
    color: var(--info);
}

.status-done {
    background: var(--success-bg);
    color: var(--success);
}

.status-cancelled {
    background: var(--danger-bg);
    color: var(--danger);
}

/* ============================================================
   Components - Modals
   ============================================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--oslo-gray);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ============================================================
   Components - Search & Filters
   ============================================================ */
.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--firefly);
}

.search-box::before {
    content: '🔍';
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
}

.filters-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group label {
    font-size: 13px;
    color: var(--oslo-gray);
}

.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
}

/* ============================================================
   Components - Pagination
   ============================================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition);
}

.pagination-btn:hover {
    background: var(--wild-sand);
}

.pagination-btn.active {
    background: var(--firefly);
    color: white;
    border-color: var(--firefly);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================
   Components - Empty State
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state .empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    color: var(--mako);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--oslo-gray);
    margin-bottom: 24px;
}

/* ============================================================
   Components - Avatar
   ============================================================ */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--firefly);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 13px;
}

.avatar-lg {
    width: 56px;
    height: 56px;
    font-size: 22px;
}

/* ============================================================
   Utilities
   ============================================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--oslo-gray); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

.hidden { display: none !important; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-bar {
        flex-direction: column;
    }
    
    .page-content {
        padding: 20px;
    }
    
    .main-header {
        padding: 0 20px;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 12px;
        font-size: 13px;
    }
}