/* ============================================
   HSA Monster — Tools / Calculator Styles
   Shared by the Tools hub and each calculator page.
   Builds on the site theme tokens in /styles.css.
   Visual language mirrors the iOS app's calculator:
   big headline value, edge-to-edge chart, stat pair,
   frosted inputs card, footnote disclaimer.
   ============================================ */

/* ============================================
   Page shell
   ============================================ */
.tool-page {
    /* Clears the fixed navbar */
    padding-top: calc(var(--space-4xl) + 1rem);
    padding-bottom: var(--space-2xl);
}

.tool-container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.tool-container--narrow {
    max-width: 780px;
}

/* Breadcrumbs — also rendered as BreadcrumbList JSON-LD on each page */
.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.breadcrumbs a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
    color: var(--accent-primary);
}

.breadcrumbs .sep {
    opacity: 0.5;
}

.breadcrumbs [aria-current="page"] {
    color: var(--text-muted);
}

/* ============================================
   Tool hero
   ============================================ */
.tool-hero {
    max-width: 760px;
    margin-bottom: var(--space-xl);
}

.tool-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3rem);
    line-height: 1.1;
    margin: var(--space-sm) 0 var(--space-md);
}

.tool-hero .lead {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.tool-hero .lead strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================
   Calculator layout
   Results (chart + stats) beside the inputs on
   desktop; stacked results-first on mobile so the
   payoff is visible before the form.
   ============================================ */
.calc {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: start;
    margin-bottom: var(--space-2xl);
}

.calc-results {
    position: sticky;
    top: calc(var(--space-4xl) + 0.5rem);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    min-width: 0;
}

.calc-inputs-col {
    min-width: 0;
}

/* ============================================
   Result card (headline + chart)
   ============================================ */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--space-lg) 0 var(--space-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.result-head {
    padding: 0 var(--space-lg);
}

.result-value {
    font-size: clamp(2.25rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.result-caption {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ============================================
   Chart — inline SVG, edge-to-edge like the app
   ============================================ */
.chart-wrap {
    position: relative;
    margin-top: var(--space-md);
    /* Scrubbing shouldn't turn into a page pan on touch */
    touch-action: pan-y;
    cursor: crosshair;
}

.chart-svg {
    display: block;
    width: 100%;
    height: 190px;
    overflow: visible;
}

.chart-line-hsa {
    fill: none;
    stroke: var(--accent-primary);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-line-taxable {
    fill: none;
    stroke: var(--text-secondary);
    stroke-opacity: 0.6;
    stroke-width: 1.5;
    stroke-dasharray: 4 4;
    stroke-linecap: round;
}

.chart-area {
    stroke: none;
}

.chart-rule {
    stroke: var(--accent-primary);
    stroke-opacity: 0.7;
    stroke-width: 1;
}

.chart-dot {
    fill: var(--accent-primary);
    stroke: var(--bg-card);
    stroke-width: 2;
}

.chart-hidden {
    display: none;
}

/* Axis + legend row beneath the plot */
.chart-axis {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--space-sm) var(--space-lg) 0;
    font-variant-numeric: tabular-nums;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-lg) 0;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.legend-swatch {
    width: 16px;
    height: 3px;
    border-radius: var(--radius-full);
    background: var(--accent-primary);
    flex: 0 0 auto;
}

.legend-swatch.dashed {
    background: repeating-linear-gradient(
        to right,
        var(--text-secondary) 0 4px,
        transparent 4px 8px
    );
    opacity: 0.7;
}

/* ============================================
   Stat pair — mirrors the app's summary grid
   ============================================ */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
}

.stat-title {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-xs);
}

.stat-value {
    font-size: clamp(1.25rem, 2.6vw, 1.6rem);
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
}

.stat-value.accent {
    color: var(--accent-secondary);
}

/* ============================================
   Inputs card — the app's "Your inputs" panel
   ============================================ */
.inputs-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.inputs-card h2 {
    font-size: 1.05rem;
    margin-bottom: var(--space-xs);
}

.inputs-card .inputs-sub {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.field {
    padding: 0.625rem 0;
    border-top: 1px solid var(--border-color);
}

.field:first-of-type {
    border-top: none;
    padding-top: 0;
}

.field-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    min-height: 1.75rem;
}

.field-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.field-value {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.field-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
    line-height: 1.5;
}

/* "2026 Max" badge beside the contribution label */
.max-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: var(--accent-glow);
    border-radius: var(--radius-full);
    padding: 0.1rem 0.5rem;
    white-space: nowrap;
    transition: opacity var(--transition-base);
}

.max-badge[hidden] {
    display: none;
}

/* Currency input */
.currency-input {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color-strong);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.6rem;
    transition: border-color var(--transition-fast);
    max-width: 100%;
}

.currency-input:focus-within {
    border-color: var(--accent-primary);
}

.currency-input .prefix {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9375rem;
}

.currency-input input {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    background: none;
    border: none;
    outline: none;
    width: 7ch;
    text-align: right;
    font-variant-numeric: tabular-nums;
    padding: 0;
    /* Number-ish text field, so drop the spinner affordances */
    -moz-appearance: textfield;
}

.currency-input input::-webkit-outer-spin-button,
.currency-input input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Select (federal bracket, state tax) */
.select-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.select-wrap select {
    appearance: none;
    -webkit-appearance: none;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--accent-primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 0.3rem 1.5rem 0.3rem 0.5rem;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.select-wrap select:hover {
    background: var(--bg-secondary);
}

.select-wrap select:focus-visible {
    outline: none;
    border-color: var(--accent-primary);
}

.select-wrap::after {
    content: '';
    position: absolute;
    right: 0.5rem;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
    transform: translateY(-2px) rotate(45deg);
    pointer-events: none;
}

.select-wrap select option {
    /* Native menus don't inherit page colors on every platform */
    color: var(--text-primary);
    background: var(--bg-card);
}

/* Segmented control — the app's coverage picker */
.segmented {
    display: inline-flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 3px;
    gap: 2px;
}

.segmented button {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-radius: calc(var(--radius-md) - 2px);
    padding: 0.35rem 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.segmented button[aria-pressed="true"] {
    background: var(--accent-primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.segmented button:not([aria-pressed="true"]):hover {
    color: var(--text-primary);
}

/* Range sliders */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    margin-top: 0.625rem;
    border-radius: var(--radius-full);
    background: var(--border-color-strong);
    outline: none;
    cursor: grab;
}

.slider:active {
    cursor: grabbing;
}

/* The filled portion is painted via a background gradient whose stop is set
   from JS (--fill), since range inputs have no cross-browser progress part. */
.slider {
    background-image: linear-gradient(
        to right,
        var(--accent-primary) 0%,
        var(--accent-primary) var(--fill, 50%),
        transparent var(--fill, 50%)
    );
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.12);
    box-shadow: var(--shadow-md);
    cursor: grab;
    transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:active {
    transform: scale(1.12);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.12);
    box-shadow: var(--shadow-md);
    cursor: grab;
}

.slider:focus-visible {
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Toggle switch — FICA / payroll contribution */
.toggle {
    position: relative;
    display: inline-flex;
    flex: 0 0 auto;
    width: 46px;
    height: 28px;
}

.toggle input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    cursor: pointer;
    z-index: 1;
}

.toggle .track {
    position: absolute;
    inset: 0;
    background: var(--border-color-strong);
    border-radius: var(--radius-full);
    transition: background var(--transition-base);
}

.toggle .track::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-full);
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.toggle input:checked + .track {
    background: var(--accent-primary);
}

.toggle input:checked + .track::after {
    transform: translateX(18px);
}

.toggle input:focus-visible + .track {
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Assumptions footnote — the app's CalculatorDisclaimer */
.calc-disclaimer {
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-top: var(--space-lg);
    text-align: center;
}

/* ============================================
   Long-form content below the calculator
   ============================================ */
.tool-section {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--border-color);
}

.tool-section > h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--space-md);
}

.tool-section > h3 {
    font-size: 1.15rem;
    margin: var(--space-xl) 0 var(--space-sm);
}

.tool-section p {
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: var(--space-md);
    max-width: 70ch;
}

.tool-section p a,
.tool-prose a {
    color: var(--accent-primary);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.tool-list {
    display: grid;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    max-width: 70ch;
}

.tool-list li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.tool-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--accent-secondary);
}

.tool-list li strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Data table — 2026 limits, tax-treatment comparisons */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--space-md);
}

.tool-table {
    width: 100%;
    min-width: 460px;
    border-collapse: collapse;
    font-size: 0.9375rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tool-table caption {
    caption-side: bottom;
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-align: left;
    padding-top: var(--space-sm);
}

.tool-table th,
.tool-table td {
    padding: 0.7rem var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.tool-table thead th {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
    background: var(--bg-tertiary);
}

.tool-table tbody tr:last-child th,
.tool-table tbody tr:last-child td {
    border-bottom: none;
}

.tool-table tbody th {
    font-weight: 600;
    color: var(--text-primary);
}

.tool-table td {
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Numbered "how the math works" steps */
.step-list {
    counter-reset: step;
    display: grid;
    gap: var(--space-md);
    max-width: 70ch;
}

.step-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.step-item .num {
    flex: 0 0 auto;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    counter-increment: step;
    font-size: 0.9rem;
}

.step-item .num::before {
    content: counter(step);
}

.step-item h3 {
    font-size: 1.05rem;
    margin: 0 0 2px;
}

.step-item p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.65;
}

/* FAQ — reuses the shared .faq-item look without the scroll observer */
.tool-faq {
    display: grid;
    gap: var(--space-md);
    max-width: 70ch;
}

.tool-faq details {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    transition: border-color var(--transition-fast);
}

.tool-faq details[open] {
    border-color: var(--border-color-strong);
}

/* Block, not flex: the question is running text that may contain inline spans
   (e.g. the config-driven tax year), and a flex container would promote each
   text run to its own item and space them apart by the container gap. The
   chevron is positioned instead of being a flex sibling. */
.tool-faq summary {
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: block;
    position: relative;
    padding-right: 1.75rem;
}

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

.tool-faq summary::after {
    content: '';
    position: absolute;
    right: 2px;
    top: 0.45em;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
    transform: rotate(45deg);
    transition: transform var(--transition-fast), top var(--transition-fast);
}

.tool-faq details[open] summary::after {
    top: 0.6em;
    transform: rotate(-135deg);
}

.tool-faq details p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: var(--space-md) 0 0;
    font-size: 0.95rem;
}

/* ============================================
   Tools hub cards
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: var(--space-lg);
}

.tool-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.tool-card .card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--accent-glow);
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
}

.tool-card h2,
.tool-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.tool-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
    flex: 1 1 auto;
}

.tool-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    color: var(--accent-primary);
    align-self: flex-start;
}

.tool-card:hover .card-link .arrow {
    transform: translateX(3px);
}

.card-link .arrow {
    transition: transform var(--transition-fast);
}

/* "Next tool" cross-links at the foot of each calculator */
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.related-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.related-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.related-card .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-secondary);
}

.related-card h3 {
    font-size: 1.05rem;
    margin: var(--space-xs) 0;
}

.related-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* The page-closing App Store CTA reuses .cta-section / .cta-box from
   /styles.css so it stays identical to the home page's. Nothing tool-specific
   is needed here beyond dropping the shared section's horizontal padding,
   since .tool-container already provides it. */
.tool-page .cta-section {
    padding-left: 0;
    padding-right: 0;
}

/* Inline mid-page nudge, placed right under the results */
.inline-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
}

.inline-cta p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 46ch;
}

.inline-cta strong {
    color: var(--text-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 940px) {
    .calc {
        grid-template-columns: minmax(0, 1fr);
        gap: var(--space-lg);
    }

    /* Inputs come first once stacked: on a phone the controls are what you
       reach for, and a chart you haven't fed any numbers to isn't worth the
       first screen. Reordered visually rather than in the DOM so the results
       still read first for screen readers and crawlers. */
    .calc-inputs-col {
        order: 1;
    }

    .calc-results {
        order: 2;
        position: static;
    }

    /* 20% shorter in the stacked layout — the chart is decorative next to the
       headline figure, and the full height pushes the numbers off a phone. */
    .chart-svg {
        height: 152px;
    }
}

@media (max-width: 560px) {
    .tool-page {
        padding-top: calc(var(--space-3xl) + 1.5rem);
    }

    /* The stat pair stays side-by-side at every width — the two figures are
       meant to be read against each other, and stacking them breaks the
       comparison. The cards tighten instead; titles wrap if they must. */
    .stat-card {
        padding: var(--space-md);
    }

    .stat-title {
        font-size: 0.6875rem;
        letter-spacing: 0.02em;
    }

    .stat-value {
        font-size: clamp(1.0625rem, 4.6vw, 1.375rem);
        letter-spacing: -0.02em;
    }

    .result-card {
        border-radius: var(--radius-xl);
    }

    .field-row {
        flex-wrap: wrap;
    }

    .inline-cta {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .inline-cta .btn {
        width: 100%;
    }
}

/* Respect reduced-motion: the chart reveal and hovers stop animating */
@media (prefers-reduced-motion: reduce) {
    .tool-card:hover,
    .related-card:hover {
        transform: none;
    }
}

/* ============================================
   Mobile "Calculate" button
   ============================================
   The inputs sit above the chart once stacked, so this scrolls the results
   into view. It computes nothing — the projection is already live on every
   keystroke — it just delivers the payoff moment the button implies.
   Hidden on desktop, where the chart is beside the inputs and already visible. */
.calc-jump {
    display: none;
    width: 100%;
    margin-top: var(--space-lg);
}

@media (max-width: 940px) {
    .calc-jump {
        display: inline-flex;
    }
}