/* India Tax Planner - Production CSS */
/* WCAG 2.1 AA Compliant */

:root {
    /* Light Mode Colors */
    --primary: #1a5f7a;
    --primary-dark: #134a5f;
    --primary-light: #2d8fb8;
    --secondary: #57c4e5;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --old-regime: #e67e22;
    --new-regime: #27ae60;

    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --border-color: #dee2e6;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', Monaco, Consolas, monospace;
}

/* Dark Mode */
.dark-mode {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #b8b8b8;
    --text-muted: #888888;
    --border-color: #3a3a5c;
    --primary: #4fc3f7;
    --primary-dark: #29b6f6;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
}

/* Focus Styles for Accessibility */
*:focus {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Skip Link for Screen Readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}

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

/* Header */
.app-header {
    background: var(--primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.app-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.title-icon {
    font-size: 1.75rem;
}

.main-nav {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 1.25rem;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Ad Banner Containers — constrain height so ads never push content below the fold */
.ad-banner-top,
.ad-banner-bottom {
    max-height: 120px;
    overflow: hidden;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

/* Calculator Page */
.calculator-page,
.comparison-page,
.suggestions-page {
    animation: fadeIn 0.3s ease;
}

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

.calculator-intro,
.page-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.calculator-intro h2,
.page-intro h2 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.calculator-grid,
.comparison-grid,
.suggestions-grid {
    display: grid;
    grid-template-columns: minmax(300px, 420px) 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 900px) {
    .calculator-grid,
    .comparison-grid,
    .suggestions-grid {
        grid-template-columns: 1fr;
    }
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.15);
}

.input-with-prefix {
    display: flex;
    align-items: center;
}

.input-with-prefix .prefix {
    background: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
}

.input-with-prefix .form-control {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 500px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-help {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

/* Fieldset */
.deduction-fieldset {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.deduction-fieldset legend {
    font-weight: 600;
    padding: 0 var(--spacing-sm);
    color: var(--primary);
}

.total-display {
    background: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.limit-note {
    font-weight: normal;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-primary:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.btn-calculate {
    width: 100%;
    margin-top: var(--spacing-lg);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Results Section */
.results-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.recommendation-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.recommendation-card.old-regime {
    border-left: 4px solid var(--old-regime);
}

.recommendation-card.new-regime {
    border-left: 4px solid var(--new-regime);
}

.recommendation-header {
    margin-bottom: var(--spacing-md);
}

.recommendation-header .badge {
    display: inline-block;
    background: var(--success);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.recommendation-header h3 {
    margin: 0;
    font-size: 1.75rem;
    color: var(--primary);
}

.savings-highlight {
    font-size: 2rem;
    font-weight: 700;
    color: var(--success);
    margin: var(--spacing-md) 0;
}

.savings-percentage {
    font-size: 1rem;
    font-weight: normal;
    color: var(--text-secondary);
}

.recommendation-reason {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Comparison Cards */
.comparison-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

@media (max-width: 600px) {
    .comparison-cards {
        grid-template-columns: 1fr;
    }
}

.regime-card {
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.regime-card.recommended {
    border: 2px solid var(--success);
    transform: scale(1.02);
}

.regime-card h4 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.regime-card .tax-amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.tax-detail {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

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

.breakdown-details {
    margin-top: var(--spacing-md);
    text-align: left;
}

.breakdown-details summary {
    cursor: pointer;
    color: var(--primary);
    font-weight: 600;
}

.breakdown-content {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.breakdown-content p {
    margin: var(--spacing-xs) 0;
}

/* Placeholder */
.placeholder-card {
    text-align: center;
    padding: var(--spacing-xl) * 2;
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

/* Disclaimer */
.disclaimer-box {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-size: 0.875rem;
    color: #856404;
}

.dark-mode .disclaimer-box {
    background: #433516;
    border-color: #665d3a;
    color: #f5d77f;
}

/* Comparison Page */
.trends-card .trends-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 700px) {
    .trends-card .trends-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.trend-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.trend-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.trend-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.trend-value.highlight {
    color: var(--success);
}

.trend-value.positive {
    color: var(--success);
}

.trend-value.negative {
    color: var(--danger);
}

/* Chart */
.chart-container {
    padding: var(--spacing-md) 0;
}

.chart-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.chart-label {
    width: 90px;
    font-weight: 600;
    font-size: 0.875rem;
}

.chart-bars {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.bar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.bar {
    height: 16px;
    border-radius: 4px;
    min-width: 4px;
    transition: width 0.5s ease;
}

.bar.old-bar {
    background: var(--old-regime);
}

.bar.new-bar {
    background: var(--new-regime);
}

.bar-value {
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.chart-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.chart-badge.old {
    background: rgba(230, 126, 34, 0.15);
    color: var(--old-regime);
}

.chart-badge.new {
    background: rgba(39, 174, 96, 0.15);
    color: var(--new-regime);
}

.chart-legend {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.legend-color.old {
    background: var(--old-regime);
}

.legend-color.new {
    background: var(--new-regime);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

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

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

.data-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td.highlight {
    font-weight: 600;
    color: var(--primary);
}

.data-table td.savings {
    color: var(--success);
    font-weight: 600;
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.old-badge {
    background: rgba(230, 126, 34, 0.15);
    color: var(--old-regime);
}

.new-badge {
    background: rgba(39, 174, 96, 0.15);
    color: var(--new-regime);
}

/* Suggestions Page */
.summary-card .summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 700px) {
    .summary-card .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.summary-item {
    text-align: center;
    padding: var(--spacing-md);
}

.summary-item.highlight {
    background: rgba(40, 167, 69, 0.1);
    border-radius: var(--radius-md);
}

.summary-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.summary-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.info-card,
.success-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.info-card {
    background: rgba(87, 196, 229, 0.1);
    border: 1px solid var(--secondary);
}

.success-card {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid var(--success);
}

.info-icon,
.success-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.suggestions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.suggestion-card {
    border-left: 4px solid var(--border-color);
}

.suggestion-card.priority-high {
    border-left-color: var(--danger);
}

.suggestion-card.priority-medium {
    border-left-color: var(--warning);
}

.suggestion-card.priority-low {
    border-left-color: var(--success);
}

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

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

.section-badge {
    display: inline-block;
    background: var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.suggestion-title h4 {
    margin: 0;
}

.priority-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}

.priority-badge.priority-high {
    background: rgba(220, 53, 69, 0.15);
    color: var(--danger);
}

.priority-badge.priority-medium {
    background: rgba(255, 193, 7, 0.15);
    color: #b38600;
}

.priority-badge.priority-low {
    background: rgba(40, 167, 69, 0.15);
    color: var(--success);
}

.suggestion-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.suggestion-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

@media (max-width: 600px) {
    .suggestion-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.stat-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-weight: 600;
}

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

.stat-value.savings {
    color: var(--success);
}

.suggestion-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-item.risk-low {
    color: var(--success);
}

.meta-item.risk-moderate {
    color: var(--warning);
}

.meta-item.risk-high {
    color: var(--danger);
}

/* Footer */
.app-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    text-align: center;
}

.disclaimer {
    font-size: 0.875rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --text-muted: #333;
    }

    .dark-mode {
        --border-color: #fff;
        --text-muted: #ccc;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ─── Static Pages (About, Contact, Blog) ─── */
.static-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem;
}

.static-page h1 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    border: none;
    padding-bottom: 0;
}

.static-page h2 {
    color: var(--primary);
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.static-page h3 {
    font-size: 1.1rem;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.section-icon {
    font-size: 1.2em;
}

.content-section {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.content-section p {
    margin-bottom: 0.75rem;
}

.content-section ul,
.content-section ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.content-section li {
    margin-bottom: 0.4rem;
}

/* ─── Page Hero ─── */
.page-hero {
    text-align: center;
    padding: 2rem 1rem 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, rgba(26, 95, 122, 0.08) 0%, rgba(87, 196, 229, 0.08) 100%);
    border-radius: 12px;
    border: 1px solid rgba(26, 95, 122, 0.12);
}

.dark-mode .page-hero {
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.08) 0%, rgba(15, 52, 96, 0.2) 100%);
    border-color: rgba(79, 195, 247, 0.15);
}

.page-hero-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.page-hero h1 {
    margin: 0 0 0.5rem;
    font-size: 2rem;
}

.page-hero-subtitle {
    color: var(--text-muted, #6c757d);
    font-size: 1.1rem;
    margin: 0;
}

/* ─── Feature Grid (About) ─── */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.feature-item {
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 10px;
    padding: 1.5rem;
    border-top: 3px solid var(--primary);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(26, 95, 122, 0.12);
}

.dark-mode .feature-item:hover {
    box-shadow: 0 6px 20px rgba(79, 195, 247, 0.1);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.feature-item h3 {
    margin-top: 0;
    color: var(--primary);
    font-size: 1rem;
}

/* ─── Steps Timeline (About) ─── */
.steps-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 1rem;
    position: relative;
    padding-left: 2rem;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    left: 1.1rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary, #57c4e5));
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0;
    position: relative;
}

.step-number {
    width: 2.2rem;
    height: 2.2rem;
    min-width: 2.2rem;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(26, 95, 122, 0.3);
}

.step-content h3 {
    margin: 0 0 0.25rem;
    font-size: 1.05rem;
}

.step-content p {
    margin: 0;
    color: var(--text-muted, #6c757d);
    font-size: 0.95rem;
}

/* ─── Tech Stack Badges (About) ─── */
.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.tech-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
    transition: transform 0.2s;
}

.tech-badge:hover {
    transform: translateY(-2px);
}

.tech-badge-icon {
    font-size: 1.5rem;
    min-width: 2rem;
    text-align: center;
}

.tech-badge strong {
    display: block;
    font-size: 0.9rem;
}

.tech-badge small {
    color: var(--text-muted, #6c757d);
    font-size: 0.8rem;
}

/* ─── Highlight Card ─── */
.highlight-card {
    background: linear-gradient(135deg, rgba(26, 95, 122, 0.06) 0%, rgba(87, 196, 229, 0.06) 100%);
    border: 1px solid rgba(26, 95, 122, 0.15);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
}

.dark-mode .highlight-card {
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.06) 0%, rgba(15, 52, 96, 0.15) 100%);
    border-color: rgba(79, 195, 247, 0.2);
}

/* ─── Contact Grid ─── */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.contact-card {
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(26, 95, 122, 0.1);
}

.contact-card-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.contact-card h3 {
    margin-top: 0;
    color: var(--primary);
    font-size: 1.05rem;
}

.contact-email {
    margin-top: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: rgba(26, 95, 122, 0.08);
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    word-break: break-all;
}

.dark-mode .contact-email {
    background: rgba(79, 195, 247, 0.1);
}

/* ─── FAQ Accordion ─── */
.faq-list {
    margin-top: 1rem;
}

.faq-accordion {
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
    overflow: hidden;
}

.faq-accordion summary {
    padding: 1rem 1.25rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--card-bg, #fff);
    transition: background 0.2s;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.faq-accordion summary::before {
    content: '+';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    min-width: 1.5rem;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
    transition: transform 0.2s;
}

.faq-accordion[open] summary::before {
    content: '-';
    transform: rotate(180deg);
}

.faq-accordion summary:hover {
    background: rgba(26, 95, 122, 0.04);
}

.dark-mode .faq-accordion summary:hover {
    background: rgba(79, 195, 247, 0.06);
}

.faq-accordion summary::-webkit-details-marker {
    display: none;
}

.faq-accordion p {
    padding: 0 1.25rem 1rem 3.25rem;
    margin: 0;
    color: var(--text-muted, #6c757d);
    line-height: 1.6;
}

/* ─── Blog Styles ─── */
.blog-header {
    margin-bottom: 2rem;
}

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--text-muted, #6c757d);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.blog-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.blog-meta-item svg {
    opacity: 0.6;
}

.blog-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.blog-card {
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 10px;
    padding: 1.75rem;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
}

.blog-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.blog-card-badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.badge-tips {
    background: rgba(40, 167, 69, 0.12);
    color: #1e7e34;
}

.dark-mode .badge-tips {
    background: rgba(40, 167, 69, 0.2);
    color: #5dd77d;
}

.badge-compare {
    background: rgba(26, 95, 122, 0.12);
    color: #1a5f7a;
}

.dark-mode .badge-compare {
    background: rgba(79, 195, 247, 0.15);
    color: #4fc3f7;
}

.blog-card h2 {
    font-size: 1.25rem;
    margin: 0 0 0.25rem 0;
}

.blog-card h2 a {
    color: var(--primary);
    text-decoration: none;
}

.blog-card h2 a:hover {
    text-decoration: underline;
}

.blog-card p {
    margin: 0.75rem 0 0 0;
    color: var(--text-color, #495057);
}

.read-more {
    display: inline-block;
    margin-top: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.2s;
}

.read-more:hover {
    text-decoration: underline;
}

/* ─── Tip Box ─── */
.tip-box {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-left: 4px solid #ffc107;
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin: 1rem 0;
}

.dark-mode .tip-box {
    background: #332b00;
    border-color: #ffc107;
    color: #ffe69c;
}

/* ─── Summary Table ─── */
.summary-table-wrapper {
    overflow-x: auto;
    margin: 1rem 0;
    border-radius: 8px;
    border: 1px solid var(--border-color, #dee2e6);
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.summary-table th {
    background: var(--primary);
    color: #fff;
    padding: 0.75rem;
    text-align: left;
}

.summary-table td {
    padding: 0.65rem 0.75rem;
    border-bottom: 1px solid var(--border-color, #dee2e6);
}

.summary-table tbody tr:hover {
    background: rgba(26, 95, 122, 0.05);
}

.dark-mode .summary-table tbody tr:hover {
    background: rgba(79, 195, 247, 0.1);
}

.total-row td {
    border-top: 2px solid var(--primary);
    font-weight: 700;
}

/* ─── CTA Link ─── */
.cta-link {
    display: inline-block;
    background: var(--primary);
    color: #fff !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 95, 122, 0.3);
    text-decoration: none;
}

/* ─── Support Us / Donation Banner ─── */
.footer-support {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.support-us-banner {
    margin: 2rem 0;
    border-radius: 12px;
    background: linear-gradient(135deg, #fef3e2 0%, #fce4b8 50%, #f9d89c 100%);
    border: 1px solid #f0c060;
    overflow: hidden;
}

.dark-mode .support-us-banner {
    background: linear-gradient(135deg, #2d2510 0%, #3a2e15 50%, #42331a 100%);
    border-color: #6b5528;
}

.support-us-content {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.support-us-text {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    min-width: 250px;
}

.support-us-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.support-us-title {
    margin: 0 0 0.25rem;
    font-size: 1.1rem;
    color: #5a3e08;
}

.dark-mode .support-us-title {
    color: #f0c060;
}

.support-us-desc {
    margin: 0;
    font-size: 0.9rem;
    color: #7a5a1a;
}

.dark-mode .support-us-desc {
    color: #c4a050;
}

.support-us-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.support-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
}

.support-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.support-btn-coffee {
    background: #ffdd00;
    color: #1a1a1a;
}

.support-btn-upi {
    background: #5f259f;
    color: #fff;
}

.support-btn-star {
    background: #24292e;
    color: #fff;
}

.dark-mode .support-btn-star {
    background: #444d56;
}

.support-btn-share {
    background: var(--primary);
    color: #fff;
    text-decoration: none;
}

/* UPI details expandable */
.upi-details {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.5);
}

.dark-mode .upi-details {
    border-top-color: rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
}

.upi-details-inner {
    text-align: center;
}

.upi-label {
    margin: 0 0 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: #5a3e08;
}

.dark-mode .upi-label {
    color: #f0c060;
}

.upi-id-row {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg, #fff);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
    padding: 0.5rem 0.5rem 0.5rem 1rem;
}

.upi-id {
    font-size: 1rem;
    font-weight: 600;
    color: #5f259f;
    letter-spacing: 0.5px;
}

.dark-mode .upi-id {
    color: #b388ff;
}

.upi-copy-btn {
    padding: 0.4rem 0.8rem;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.upi-copy-btn:hover {
    opacity: 0.9;
}

.upi-hint {
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
    color: var(--text-muted, #6c757d);
}

@media (max-width: 640px) {
    .support-us-content {
        flex-direction: column;
        text-align: center;
    }

    .support-us-text {
        flex-direction: column;
    }

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

    .support-btn {
        flex: 1;
        justify-content: center;
        min-width: 0;
    }

    .steps-timeline {
        padding-left: 1rem;
    }

    .steps-timeline::before {
        left: 0.6rem;
    }

    .page-hero {
        padding: 1.5rem 1rem 2rem;
    }

    .page-hero h1 {
        font-size: 1.5rem;
    }
}

/* ─── Navigation Dropdown ─── */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    background: none;
    border: none;
    font-size: inherit;
    font-family: inherit;
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 0.6em;
    margin-left: 2px;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 200;
    padding: var(--spacing-xs) 0;
    animation: fadeIn 0.15s ease;
}

.dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.15s;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

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

.lang-select {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.lang-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* ─── Tool Pages ─── */
.tool-page {
    animation: fadeIn 0.3s ease;
}

.tool-page .page-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.tool-page .page-intro h2 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.tool-grid {
    display: grid;
    grid-template-columns: minmax(300px, 420px) 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 900px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── Scenario Bar ─── */
.scenario-bar {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

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

.btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
}

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

.btn-outline:hover {
    background: var(--bg-tertiary);
}

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

.btn-save:hover {
    opacity: 0.9;
}

.scenario-list {
    margin-top: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.scenario-item {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

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

.scenario-load {
    flex: 1;
    background: none;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
}

.scenario-load:hover {
    background: var(--bg-secondary);
}

.scenario-load strong {
    display: block;
    font-size: 0.9rem;
}

.scenario-load small {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.scenario-delete {
    background: none;
    border: none;
    color: var(--danger);
    padding: var(--spacing-sm);
    cursor: pointer;
    font-size: 1rem;
}

.scenario-delete:hover {
    background: rgba(220, 53, 69, 0.1);
}

.scenario-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.scenario-save-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    align-items: center;
}

.scenario-save-form .form-control {
    flex: 1;
    padding: 6px 10px;
    font-size: 0.85rem;
}

/* ─── Result Actions ─── */
.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: var(--bg-primary);
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    flex: 1;
    justify-content: center;
}

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

/* ─── Tax Calendar ─── */
.calendar-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 1rem;
}

.calendar-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-left: 3px solid var(--primary);
    margin-left: 1rem;
    transition: all 0.2s;
    position: relative;
}

.calendar-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 1.2rem;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

.calendar-item.past {
    opacity: 0.5;
    border-left-color: var(--text-muted);
}

.calendar-item.past::before {
    background: var(--text-muted);
}

.calendar-item.upcoming {
    background: rgba(40, 167, 69, 0.05);
    border-left-color: var(--success);
    border-radius: 0 8px 8px 0;
}

.calendar-item.upcoming::before {
    background: var(--success);
    box-shadow: 0 0 0 4px rgba(40, 167, 69, 0.2);
}

.calendar-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    line-height: 1.1;
}

.calendar-month {
    font-size: 0.7rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--primary);
}

.calendar-day {
    font-size: 1.5rem;
    font-weight: 700;
}

.calendar-year {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.calendar-content h3 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
}

.calendar-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.calendar-category {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-top: 0.35rem;
}

.calendar-category.itr {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.calendar-category.advance.tax,
.calendar-category.advance {
    background: rgba(255, 193, 7, 0.15);
    color: #b38600;
}

.calendar-category.tds {
    background: rgba(26, 95, 122, 0.1);
    color: var(--primary);
}

.calendar-category.general {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success);
}

.calendar-countdown {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 2px 8px;
    background: var(--success);
    color: white;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

@media (max-width: 600px) {
    .calendar-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .calendar-date {
        flex-direction: row;
        gap: 0.5rem;
    }
}

/* ─── Footer Links ─── */
.footer-links {
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-links .separator {
    color: var(--border-color);
    margin: 0 0.5rem;
}

/* Print Styles */
@media print {
    .app-header,
    .app-footer,
    .input-section,
    .theme-toggle,
    .btn,
    .ad-banner-top,
    .ad-banner-bottom,
    .footer-support,
    .result-actions,
    .scenario-bar,
    .support-us-banner {
        display: none !important;
    }

    .main-content {
        padding: 0;
    }

    .calculator-grid,
    .tool-grid {
        grid-template-columns: 1fr;
    }

    .card {
        box-shadow: none;
        border: 1px solid #000;
    }

    .results-section {
        break-inside: avoid;
    }

    body::before {
        content: 'India Tax Planner - Tax Calculation Report';
        display: block;
        font-size: 1.5rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 1rem;
        color: #1a5f7a;
    }

    body::after {
        content: 'Generated at smarttaxcalc.in | This is for informational purposes only.';
        display: block;
        text-align: center;
        font-size: 0.75rem;
        color: #666;
        margin-top: 2rem;
        padding-top: 1rem;
        border-top: 1px solid #ccc;
    }
}