/* ===== DESIGN MODERNE ET AMÉLIORÉ ===== */

/* Variables de couleurs modernes */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #818cf8;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #111827;
    
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --border-dark: #9ca3af;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== TYPOGRAPHIE MODERNE ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== NAVBAR MODERNE ===== */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    position: fixed !important;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.navbar-brand {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.navbar-brand:hover {
    transform: translateY(-2px);
    filter: drop-shadow(0 8px 25px rgba(102, 126, 234, 0.3));
}

.nav-link {
    position: relative;
    padding: 0.75rem 1.25rem !important;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary) !important;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0.25rem;
    text-decoration: none;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: all var(--transition-normal);
    border-radius: var(--radius-lg);
    z-index: -1;
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link:hover,
.nav-link.active {
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== CONTENEURS ET LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.main-content {
    margin-top: 100px;
    min-height: calc(100vh - 100px);
}

/* ===== CARDS MODERNES ===== */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
    overflow: hidden;
    position: relative;
}

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

.card-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: 1.5rem;
}

/* ===== BOUTONS MODERNES ===== */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: white;
}

.btn-success {
    background: var(--success-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: white;
}

.btn-warning {
    background: var(--warning-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: white;
}

.btn-danger {
    background: var(--danger-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: white;
}

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

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

/* ===== FORMULAIRES MODERNES ===== */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    background: var(--bg-primary);
    transition: all var(--transition-normal);
    font-family: inherit;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: var(--bg-primary);
}

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

/* ===== TABLEAUX MODERNES ===== */
.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table th {
    background: var(--bg-secondary);
    padding: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    text-align: left;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background: var(--bg-secondary);
    transition: background var(--transition-fast);
}

/* ===== ALERTES MODERNES ===== */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-lg);
    border: none;
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.5s ease-out;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
}

.alert-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #1e40af;
    border-left: 4px solid var(--info-color);
}

/* ===== BADGES ET LABELS ===== */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

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

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

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

/* ===== MODALS MODERNES ===== */
.modal-content {
    border-radius: var(--radius-xl);
    border: none;
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.modal-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: 1.5rem;
}

/* ===== DASHBOARD CARDS ===== */
.dashboard-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

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

.dashboard-card h3 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.dashboard-card .stat {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

/* ===== ANIMATIONS ===== */
@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

/* ===== UTILITAIRES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-flex { display: flex; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .navbar {
        padding: 0.75rem 0;
    }
    
    .navbar-brand {
        font-size: 1.5rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
    
    .dashboard-card {
        padding: 1.5rem;
    }
    
    .dashboard-card .stat {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0.5rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.875rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .form-control,
    .form-select {
        padding: 0.75rem;
    }
}

/* ===== LOADING SPINNER ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-light);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== TOOLTIPS ===== */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: var(--radius-md);
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity var(--transition-normal);
    font-size: 0.875rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* ===== PROGRESS BARS ===== */
.progress {
    height: 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    transition: width var(--transition-slow);
}

/* ===== BREADCRUMBS ===== */
.breadcrumb {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin: 0 0.75rem;
    color: var(--text-muted);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ===== PAGINATION ===== */
.pagination {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    justify-content: center;
    gap: 0.25rem;
}

.page-item {
    margin: 0;
}

.page-link {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-light);
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    font-weight: 500;
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    color: white;
    border-color: var(--primary-color);
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
        --border-light: #374151;
        --border-medium: #4b5563;
        --border-dark: #6b7280;
    }
    
    .navbar {
        background: rgba(17, 24, 39, 0.95) !important;
        border-bottom: 1px solid var(--border-light);
    }
    
    .card {
        background: var(--bg-primary);
        border-color: var(--border-light);
    }
    
    .form-control,
    .form-select {
        background: var(--bg-primary);
        border-color: var(--border-light);
        color: var(--text-primary);
    }
    
    .table {
        background: var(--bg-primary);
    }
    
    .table th {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }
    
    .modal-content {
        background: var(--bg-primary);
        color: var(--text-primary);
    }
}