:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    --light-bg: #f7fafc;
    --card-bg: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

* {
    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(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.dashboard-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-lg);
}

.dashboard-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.dashboard-header p {
    font-size: 16px;
    opacity: 0.9;
}

.header-actions {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

.btn-danger:hover {
    background: #e53e3e;
    transform: translateY(-2px);
}

.filters-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.filters-content {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

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

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
}

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

.date-inputs {
    display: flex;
    align-items: center;
    gap: 12px;
}

.date-separator {
    color: var(--text-secondary);
    font-size: 14px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

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

.stat-icon {
    font-size: 48px;
    line-height: 1;
}

.stat-content h3 {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.data-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.data-card h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

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

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

.affiliate-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.affiliate-code {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.badge-primary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.badge-success {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
}

.badge-danger {
    background: rgba(245, 101, 101, 0.1);
    color: var(--danger-color);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 16px;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
}

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

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

.loading-spinner p {
    margin-top: 16px;
    color: var(--text-secondary);
}

code {
    background: var(--light-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: var(--danger-color);
}

.form-group {
    margin-bottom: 20px;
}

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

.btn-block {
    width: 100%;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(72, 187, 120, 0.3);
}

.alert-danger {
    background: rgba(245, 101, 101, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(245, 101, 101, 0.3);
}

.alert-info {
    background: rgba(66, 153, 225, 0.1);
    color: var(--info-color);
    border: 1px solid rgba(66, 153, 225, 0.3);
}

.action-buttons {
    display: flex;
    gap: 8px;
}

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

@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        gap: 20px;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

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

    .filter-group {
        width: 100%;
    }

    .date-inputs {
        flex-direction: column;
    }
}