/* Modern Admin Dashboard Styling */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #4CAF50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --info-color: #2196F3;
    --dark-color: #333;
    --light-color: #f8f9fa;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    color: var(--dark-color);
}

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 250px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow);
    z-index: 1000;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.sidebar-nav {
    list-style: none;
    padding: 20px 0;
}

.sidebar-nav li {
    margin-bottom: 5px;
}

.sidebar-nav a {
    display: block;
    padding: 12px 20px;
    color: var(--dark-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--primary-color);
    color: white;
}

.main-content {
    margin-left: 250px;
    padding: 20px;
    min-height: 100vh;
}

.content-header {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.content-header h1 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.breadcrumb {
    color: #666;
    font-size: 14px;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    padding: 15px 20px;
    background: var(--light-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    border-left: 4px solid var(--primary-color);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card.danger {
    border-left-color: var(--danger-color);
}

.stat-card.info {
    border-left-color: var(--info-color);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-card.success .stat-number {
    color: var(--success-color);
}

.stat-card.warning .stat-number {
    color: var(--warning-color);
}

.stat-card.danger .stat-number {
    color: var(--danger-color);
}

.stat-card.info .stat-number {
    color: var(--info-color);
}

.stat-card .stat-number:not(.success):not(.warning):not(.danger):not(.info) {
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.stat-change {
    font-size: 12px;
    font-weight: 500;
}

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

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

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

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

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

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

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

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

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

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

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    text-transform: uppercase;
}

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

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

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

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

.form-group {
    margin-bottom: 15px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.alert {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.2);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.1);
    border: 1px solid rgba(255, 152, 0, 0.2);
    color: var(--warning-color);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid rgba(244, 67, 54, 0.2);
    color: var(--danger-color);
}

.alert-info {
    background: rgba(33, 150, 243, 0.1);
    border: 1px solid rgba(33, 150, 243, 0.2);
    color: var(--info-color);
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.modal {
    display: none;
    position: fixed;
    z-index: 1050;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    width: 90%;
    max-width: 500px;
    margin: 50px auto;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    margin: 0;
    color: var(--primary-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    text-align: right;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

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

.progress {
    width: 100%;
    height: 20px;
    background: var(--light-color);
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transition: width 0.3s ease;
}

.search-box {
    position: relative;
    margin-bottom: 20px;
}

.search-box input {
    padding-left: 40px;
}

.search-box::before {
    content: "🔍";
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.chart-container {
    position: relative;
    height: 300px;
    margin: 20px 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-dialog {
        margin: 20px;
        width: calc(100% - 40px);
    }
}

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1100;
    background: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    box-shadow: var(--shadow);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
}