/* ============================================
   ARKANOID FLIP ANALYZER - STYLES
   Professional Real Estate Investment Platform
   ============================================ */

:root {
    /* Color Palette - Professional & Neutral */
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    /* Borders */
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;

    /* 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);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT
   ============================================ */

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

.app-header {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.logo h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 400;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.main-content {
    flex: 1;
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    width: 100%;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    border-color: var(--color-secondary);
}

#languageSwitcher {
    font-weight: 600;
    min-width: 50px;
    background-color: var(--color-primary);
    color: white;
    border: none;
}

#languageSwitcher:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   FORM SECTIONS
   ============================================ */

.form-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

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

.section-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.toggle-btn {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    background-color: var(--bg-secondary);
}

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

.section-content.collapsed {
    display: none;
}

.subsection-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--bg-tertiary);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select {
    padding: 0.625rem 0.875rem;
    font-size: var(--font-size-base);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input[readonly] {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.calculated-field {
    font-weight: 600;
    color: var(--color-primary);
}

.help-text {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    display: block;
}

/* ============================================
   ALERTS & WARNINGS
   ============================================ */

.warning-box,
.info-box {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.warning-box {
    background-color: #fef3c7;
    border: 1px solid #fbbf24;
    color: #92400e;
}

.info-box {
    background-color: #dbeafe;
    border: 1px solid #3b82f6;
    color: #1e3a8a;
}

/* ============================================
   COMPARABLES
   ============================================ */

.comparable-item {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    position: relative;
}

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

.comparable-header h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
}

.remove-comparable-btn {
    background: none;
    border: none;
    color: var(--color-danger);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: var(--spacing-xs);
}

.comparables-summary {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-lg);
}

.comparables-summary h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

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

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background-color: white;
    border-radius: var(--border-radius-sm);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.stat-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

.suggested-arv {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    background-color: var(--color-info);
    color: white;
    border-radius: var(--border-radius);
}

.suggested-arv .stat-label {
    color: white;
    font-weight: 500;
}

.suggested-arv .stat-value {
    color: white;
    font-weight: 700;
}

/* ============================================
   FORM ACTIONS
   ============================================ */

.form-actions {
    display: flex;
    justify-content: center;
    padding: var(--spacing-xl) 0;
}

.form-actions .btn {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-lg);
}

/* ============================================
   RESULTS SECTION
   ============================================ */

.results-section {
    animation: fadeIn 0.3s ease;
}

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

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

.results-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.results-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   DECISION CARD
   ============================================ */

.decision-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.decision-card.buy {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.decision-card.negotiate {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.decision-card.reject {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.decision-badge {
    display: inline-block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

.decision-explanation {
    font-size: var(--font-size-lg);
    color: white;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================
   METRICS GRID
   ============================================ */

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

.metric-card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

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

.metric-card.highlight {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid var(--color-primary);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.metric-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.metric-card.highlight .metric-value {
    color: var(--color-primary);
}

.metric-card.primary {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    border: none;
}

.metric-card.primary .metric-label,
.metric-card.primary .metric-value {
    color: white;
}

/* ============================================
   MAXIMUM PURCHASE PRICE
   ============================================ */

.max-purchase-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.max-purchase-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.max-purchase-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.max-purchase-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.max-purchase-row:last-child {
    border-bottom: none;
}

.max-purchase-row.highlight {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-sm) 0;
    border: 2px solid var(--color-primary);
}

.max-purchase-row .label {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 500;
}

.max-purchase-row .value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.max-purchase-row.highlight .value {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
}

/* ============================================
   BENCHMARK SECTION
   ============================================ */

.benchmark-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.benchmark-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.benchmark-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.benchmark-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-base);
}

.benchmark-row .label {
    color: var(--text-secondary);
}

.benchmark-row .value {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   BREAKDOWN SECTION
   ============================================ */

.breakdown-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.breakdown-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.breakdown-table {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.breakdown-row:last-child {
    border-bottom: none;
}

.breakdown-row.sub {
    padding-left: var(--spacing-lg);
}

.breakdown-row.sub .label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.breakdown-row.total {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-md) 0;
    font-weight: 600;
    border: 2px solid var(--border-color);
}

.breakdown-row.profit {
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.breakdown-row.final {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-md);
    border: 2px solid var(--color-primary);
}

.breakdown-row.final .value {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
}

.view-calc-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: var(--spacing-sm);
}

.view-calc-btn:hover {
    background-color: var(--bg-secondary);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================
   RISK ANALYSIS
   ============================================ */

.risk-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.risk-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

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

.risk-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.risk-card h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.risk-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.risk-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.risk-detail {
    display: flex;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
}

.risk-detail span:first-child {
    color: var(--text-secondary);
}

.risk-detail span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   SCENARIOS TABLE
   ============================================ */

.scenarios-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.scenarios-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.scenarios-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.scenarios-table thead {
    background-color: var(--bg-dark);
    color: white;
}

.scenarios-table th,
.scenarios-table td {
    padding: var(--spacing-md);
    text-align: left;
}

.scenarios-table th {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.scenarios-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.scenarios-table tbody tr:last-child {
    border-bottom: none;
}

.scenarios-table tbody tr:hover {
    background-color: white;
}

.scenarios-table td {
    font-size: var(--font-size-base);
}

/* ============================================
   CHARTS
   ============================================ */

.charts-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.charts-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.chart-container {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.chart-container.full-width {
    grid-column: 1 / -1;
}

.chart-container h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

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

/* ============================================
   SENSITIVITY HEATMAP
   ============================================ */

#sensitivityHeatmap {
    overflow-x: auto;
}

.sensitivity-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.sensitivity-table th,
.sensitivity-table td {
    padding: var(--spacing-sm);
    text-align: center;
    border: 1px solid var(--border-color);
}

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

.sensitivity-table td {
    font-weight: 600;
}

.sensitivity-cell {
    transition: all 0.2s ease;
}

.sensitivity-cell:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ============================================
   MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
}

.modal-content.large {
    max-width: 1200px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

/* ============================================
   PROJECT LIST
   ============================================ */

.project-item {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-item:hover {
    background-color: var(--bg-secondary);
    transform: translateX(4px);
}

.project-info h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.project-info p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.project-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.project-actions button {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* ============================================
   CALCULATION DETAILS
   ============================================ */

#calculationDetails {
    font-family: 'Courier New', monospace;
    background-color: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    white-space: pre-wrap;
    font-size: var(--font-size-sm);
}

/* ============================================
   COMPARISON VIEW
   ============================================ */

.comparison-table {
    width: 100%;
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

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

.comparison-table th {
    background-color: var(--bg-dark);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.comparison-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.best-value {
    background-color: #d1fae5;
    font-weight: 700;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
    }

    .header-actions .btn {
        flex: 1;
    }

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

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

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

    .modal-content {
        width: 95%;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* ============================================
   OFFER STRATEGY
   ============================================ */

.offer-strategy-section,
.arv-scenarios-section,
.renovation-budgets-section,
.financial-details-section {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.offer-strategy-section h3,
.arv-scenarios-section h3,
.renovation-budgets-section h3,
.financial-details-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.offer-card,
.renovation-budgets-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.offer-row,
.budget-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.offer-row:last-child,
.budget-row:last-child {
    border-bottom: none;
}

.offer-row.recommended {
    background-color: #dbeafe;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-sm) 0;
    border: 2px solid #3b82f6;
}

.offer-row.maximum {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-sm) 0;
    border: 2px solid var(--color-primary);
}

.offer-row.alert {
    background-color: #fef3c7;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-sm) 0;
}

.offer-row .label,
.budget-row .label {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: 500;
}

.offer-row .value,
.budget-row .value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.budget-row.highlight {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-sm) 0;
    border: 2px solid var(--color-primary);
}

.budget-row.highlight .value {
    color: var(--color-primary);
}

/* ============================================
   ARV SCENARIOS
   ============================================ */

.scenarios-comparison {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.scenarios-comparison thead {
    background-color: var(--bg-dark);
    color: white;
}

.scenarios-comparison th,
.scenarios-comparison td {
    padding: var(--spacing-md);
    text-align: left;
}

.scenarios-comparison th {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.scenarios-comparison tbody tr {
    border-bottom: 1px solid var(--border-color);
}

.scenarios-comparison tbody tr:last-child {
    border-bottom: none;
}

.scenarios-comparison tbody tr:hover {
    background-color: white;
}

.scenarios-comparison tbody tr.base-scenario {
    background-color: #f0f9ff;
    font-weight: 600;
}

.scenarios-comparison td {
    font-size: var(--font-size-base);
}

/* ============================================
   FINANCIAL DETAILS
   ============================================ */

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

.detail-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.detail-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.detail-row span:first-child {
    color: var(--text-secondary);
}

.detail-row span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

.detail-row.highlight {
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-sm);
    border-top: 2px solid var(--border-color);
    font-size: var(--font-size-base);
}

.detail-row.highlight.primary {
    background-color: #f0f9ff;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    border: none;
    margin-top: var(--spacing-md);
}

.detail-row.highlight.primary span {
    color: var(--color-primary);
    font-weight: 700;
}