/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Neutrals */
    --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;

    /* 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 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-900);
    line-height: 1.6;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

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

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

.logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-text h1 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Navigation */
.nav {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
}

.nav-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-btn:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-md);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    background: white;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--gray-50);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    cursor: pointer;
    transition: var(--transition);
}

.user-menu:hover {
    background: var(--gray-100);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-menu span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

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

.view {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active {
    display: block;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.kpi-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition);
}

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

.kpi-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-content {
    flex: 1;
}

.kpi-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: var(--spacing-xs);
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.kpi-change {
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

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

.kpi-change::before {
    content: '↑';
}

.kpi-change.negative::before {
    content: '↓';
}

/* Charts */
.charts-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.chart-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

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

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

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

.select-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.select-sm:hover {
    border-color: var(--primary);
}

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

.chart-container.large {
    height: 400px;
}

/* Indicators List */
.indicators-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.indicator-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--gray-50);
    transition: var(--transition);
}

.indicator-item:hover {
    background: var(--gray-100);
}

.indicator-name {
    font-weight: 500;
    color: var(--gray-700);
}

.indicator-value {
    font-weight: 600;
    color: var(--gray-900);
}

/* View Header */
.view-header {
    margin-bottom: var(--spacing-xl);
}

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

.view-header p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Forecast Card */
.forecast-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--spacing-xl);
}

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

.forecast-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
}

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

.forecast-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-200);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

/* Scenarios */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.scenario-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    transition: var(--transition);
}

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

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

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

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

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

.scenario-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.scenario-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.scenario-params {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.param {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.param span {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.param strong {
    color: var(--gray-900);
    font-weight: 600;
}

/* Buttons */
.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-sm:hover {
    background: var(--gray-200);
}

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

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

.btn-sm.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
}

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

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    color: white;
    font-size: 1.125rem;
    font-weight: 500;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideIn 0.3s ease-out;
}

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

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.info {
    border-left: 4px solid var(--info);
}

/* Responsive */
@media (max-width: 1024px) {
    .header-content {
        flex-wrap: wrap;
    }

    .nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
    }

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

@media (max-width: 768px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }

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

    .user-menu span {
        display: none;
    }
}/* Scenario Analysis Styles */

/* Scenario Selector */
.scenario-selector-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xl);
}

.selector-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.selector-header p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.scenario-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.scenario-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--gray-50);
    cursor: pointer;
    transition: var(--transition);
}

.scenario-checkbox:hover {
    background: var(--gray-100);
}

.scenario-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label {
    font-weight: 500;
    font-size: 0.875rem;
}

.checkbox-label.baseline {
    color: var(--info);
}

.checkbox-label.optimistic {
    color: var(--success);
}

.checkbox-label.pessimistic {
    color: var(--warning);
}

.checkbox-label.stress {
    color: var(--danger);
}

/* Scenario Badge */
.scenario-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.scenario-card.baseline .scenario-badge {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.scenario-card.optimistic .scenario-badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.scenario-card.pessimistic .scenario-badge {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.scenario-card.stress .scenario-badge {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* Param Groups */
.param-group {
    margin-bottom: var(--spacing-lg);
}

.param-group h5 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Scenario Impact */
.scenario-impact {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

.scenario-impact h5 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.scenario-impact ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scenario-impact li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-600);
    font-size: 0.875rem;
    position: relative;
    padding-left: var(--spacing-lg);
}

.scenario-impact li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Comparison Table */
.comparison-table-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    margin-top: var(--spacing-xl);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.comparison-table thead {
    background: var(--gray-50);
}

.comparison-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
}

.comparison-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-100);
}

.comparison-table tbody tr:hover {
    background: var(--gray-50);
}

.comparison-table .baseline-col {
    background: rgba(59, 130, 246, 0.05);
}

.comparison-table .optimistic-col {
    background: rgba(16, 185, 129, 0.05);
}

.comparison-table .pessimistic-col {
    background: rgba(245, 158, 11, 0.05);
}

.comparison-table .stress-col {
    background: rgba(239, 68, 68, 0.05);
}

.comparison-table .positive {
    color: var(--success);
    font-weight: 600;
}

.comparison-table .negative {
    color: var(--danger);
    font-weight: 600;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .scenario-checkboxes {
        grid-template-columns: 1fr;
    }

    .comparison-table {
        font-size: 0.75rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-sm);
    }
}