/* PayDash - Modern Pay Analytics Dashboard Styles */

:root {
    /* Colors */
    --primary: #007AFF;
    --primary-light: #4A9EFF;
    --primary-dark: #0056CC;
    --secondary: #5856D6;
    --success: #34C759;
    --warning: #FF9500;
    --danger: #FF3B30;
    --info: #5AC8FA;
    
    /* Light Mode Colors */
    --background: #F9FAFB;
    --surface: #FFFFFF;
    --surface-secondary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --border-light: #F3F4F6;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
}

/* Dark Mode Theme */
[data-theme="dark"] {
    --background: #0D1117;
    --surface: #161B22;
    --surface-secondary: #21262D;
    --text-primary: #F0F6FC;
    --text-secondary: #8B949E;
    --border: #30363D;
    --border-light: #21262D;
}

:root {
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader {
    text-align: center;
    color: var(--white);
}

.loader i {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    animation: pulse 2s infinite;
}

.loader h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.loader p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.progress-bar {
    width: 300px;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--white);
    transition: width var(--transition-normal);
    border-radius: var(--radius-sm);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo i {
    font-size: 1.5rem;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.date-range {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--gray-600);
}

.date-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

.date-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    width: 100%;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.metric-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.metric-card:nth-child(1) .metric-icon { background: linear-gradient(135deg, var(--success), #28B946); }
.metric-card:nth-child(2) .metric-icon { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.metric-card:nth-child(3) .metric-icon { background: linear-gradient(135deg, var(--warning), #E5890A); }
.metric-card:nth-child(4) .metric-icon { background: linear-gradient(135deg, var(--secondary), #4B46C7); }

.metric-content h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.metric-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.metric-change {
    font-size: 0.75rem;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.metric-change.positive {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--success);
}

.metric-change.negative {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--danger);
}

/* Charts Section */
.charts-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.chart-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: background-color var(--transition-normal);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.chart-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chart-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.chart-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.chart-container canvas {
    max-height: 300px;
}

/* Analysis Section */
.analysis-section {
    margin-bottom: var(--spacing-2xl);
}

.analysis-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

/* Table Container */
.table-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: background-color var(--transition-normal);
}

.table-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: border-color var(--transition-normal);
}

.table-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.table-controls {
    display: flex;
    gap: var(--spacing-md);
}

.search-input, .sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
}

.search-input:focus, .sort-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

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

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

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

th {
    background-color: var(--gray-50);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-700);
}

td {
    font-size: 0.875rem;
    color: var(--gray-900);
}

.date-cell strong {
    display: block;
    font-weight: 600;
}

.date-cell small {
    color: var(--gray-500);
    font-size: 0.75rem;
}

.currency {
    font-weight: 600;
    text-align: right;
}

.deduction {
    color: var(--danger);
}

.net-pay {
    color: var(--success);
}

.tax-rate {
    text-align: right;
    font-weight: 500;
}

/* Benefits Container */
.benefits-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: background-color var(--transition-normal);
}

.benefits-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition-normal);
}

.benefits-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.benefits-content {
    padding: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--gray-100);
}

.benefit-item:last-child {
    border-bottom: none;
}

.benefit-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--white);
}

.benefit-item:nth-child(1) .benefit-icon { background: var(--info); }
.benefit-item:nth-child(2) .benefit-icon { background: var(--success); }
.benefit-item:nth-child(3) .benefit-icon { background: var(--secondary); }
.benefit-item:nth-child(4) .benefit-icon { background: var(--warning); }

.benefit-details h4 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.benefit-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

/* Detail Grid */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.detail-section {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.detail-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-200);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item span:first-child {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.detail-item span:last-child {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
}

.detail-section.summary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
}

.detail-section.summary h4 {
    color: var(--white);
    border-bottom-color: rgba(255, 255, 255, 0.3);
}

.detail-section.summary .detail-item {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.detail-section.summary .detail-item span {
    color: rgba(255, 255, 255, 0.9);
}

.detail-item.total span {
    font-size: 1rem;
    font-weight: 700;
}

/* Error Message */
.error-message {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--danger);
    color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 1001;
    animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

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

    .main-content {
        padding: var(--spacing-md);
    }

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

    .charts-section {
        grid-template-columns: 1fr;
    }

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

    .table-controls {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .search-input, .sort-select {
        width: 100%;
    }

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

    .modal {
        padding: var(--spacing-md);
    }

    .modal-content {
        max-height: 95vh;
    }
}

@media (max-width: 480px) {
    .metric-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .metric-icon {
        margin: 0 auto;
    }

    .date-range {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }

    .date-input {
        width: 100%;
    }
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-normal);
}

.empty-state-content {
    text-align: center;
    max-width: 400px;
    padding: var(--spacing-2xl);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* Print Styles */
@media print {
    .header, .modal {
        display: none !important;
    }

    .main-content {
        max-width: none;
        padding: 0;
    }

    .chart-container {
        break-inside: avoid;
    }
}
/* Hide file input element */
#pdfUpload {
    display: none;
}