:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --sidebar-width: 250px;
    --sidebar-bg: #2c3e50;
    --sidebar-hover: #34495e;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f7fa;
    color: #333;
}

/* Login Screen */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: white;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar-header h4 {
    color: white;
    margin: 0;
}

.sidebar .nav {
    flex: 1;
    padding: 0 10px;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.sidebar .nav-link:hover {
    background: var(--sidebar-hover);
    color: white;
    border-left-color: var(--primary-color);
}

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

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

.user-info {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    margin-bottom: 10px;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 30px;
    min-height: 100vh;
}

.content-section {
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Stat Cards */
.stat-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.stat-content h3 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
}

.stat-content p {
    margin: 5px 0 0;
    color: #666;
    font-size: 14px;
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 15px 20px;
    border-radius: 12px 12px 0 0;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* Tables */
.table {
    margin: 0;
}

.table thead th {
    background: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: #495057;
}

.table tbody tr {
    transition: background 0.2s;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 500;
}

.badge-status-draft { background: #6c757d; color: white; }
.badge-status-pending { background: #ffc107; color: #000; }
.badge-status-approved { background: #198754; color: white; }
.badge-status-active { background: #0d6efd; color: white; }
.badge-status-paid { background: #198754; color: white; }
.badge-status-delinquent { background: #dc3545; color: white; }
.badge-status-closed { background: #6c757d; color: white; }
.badge-status-rejected { background: #dc3545; color: white; }

.badge-status-active { background: #0d6efd; color: white; }
.badge-status-blocked { background: #dc3545; color: white; }
.badge-status-pending { background: #ffc107; color: #000; }
.badge-status-rejected { background: #dc3545; color: white; }

.badge-kyc-not_started { background: #6c757d; color: white; }
.badge-kyc-pending { background: #ffc107; color: #000; }
.badge-kyc-completed { background: #198754; color: white; }
.badge-kyc-failed { background: #dc3545; color: white; }

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 8px 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

/* Search Box */
.search-box {
    width: 300px;
}

/* Date Range Picker */
.date-range-picker {
    display: flex;
    align-items: center;
}

/* Tabs */
.nav-tabs {
    border-bottom: 2px solid #dee2e6;
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    color: #666;
    padding: 12px 20px;
    transition: all 0.3s;
}

.nav-tabs .nav-link:hover {
    border-bottom-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* User Detail */
.user-detail-section {
    margin-bottom: 30px;
}

.user-detail-section h5 {
    color: var(--primary-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e9ecef;
}

.user-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.info-item {
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

.info-item label {
    font-size: 12px;
    color: #666;
    text-transform: uppercase;
    margin-bottom: 5px;
    display: block;
}

.info-item .value {
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

/* Loan Actions */
.loan-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Charts */
.chart-container {
    position: relative;
    height: 300px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
}

/* Modal */
.modal-content {
    border-radius: 12px;
    border: none;
}

.modal-header {
    border-bottom: 1px solid #e9ecef;
    padding: 20px;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 1px solid #e9ecef;
    padding: 20px;
}

/* Forms */
.form-label {
    font-weight: 500;
    margin-bottom: 8px;
    color: #495057;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #dee2e6;
    padding: 10px 15px;
    transition: all 0.3s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

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

.metric-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.metric-card h6 {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.metric-card .value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.metric-card .change {
    font-size: 14px;
    margin-top: 5px;
}

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

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