/* =============================================================================================
 * Calculator resource pages
 *
 * Calculator pages intentionally do NOT use the spacious card/hero treatment of normal resources.
 * The page is styled as a compact technical instrument: square geometry, blueprint grid, obvious
 * input/output flow, and a dedicated reference-image bay.
 * ============================================================================================= */

.resource-calculator-page {
    --calc-line: color-mix(in srgb, var(--resource-accent) 28%, var(--resource-line));
    --calc-line-strong: color-mix(in srgb, var(--resource-accent) 58%, var(--resource-line-strong));
    --calc-grid: color-mix(in srgb, var(--resource-accent) 8%, transparent);
    --calc-grid-strong: color-mix(in srgb, var(--resource-accent) 13%, transparent);
    --calc-panel: color-mix(in srgb, var(--resource-surface) 96%, var(--resource-accent-soft));
    --calc-display: color-mix(in srgb, var(--resource-code-bg) 93%, var(--resource-accent));
    --calc-display-text: var(--resource-code-text);
    --calc-label: var(--resource-accent);
    --calc-radius: 0.18rem;
}


/* =============================================================================================
 * Minimal page header
 * ============================================================================================= */

.resource-calculator-header {
    margin: 0;
    border: 0;
    border-bottom: var(--border-width, 0.0625rem) solid var(--calc-line);
    background: var(--resource-surface);
}

.resource-calculator-header__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(14rem, 0.34fr);
    gap: clamp(1rem, 3vw, 2.5rem);
    align-items: end;
    padding-block: clamp(1.25rem, 3vw, 2.2rem);
}

.resource-calculator-header__identity {
    padding-left: 2rem;
}

.resource-calculator-header__eyebrow {
    margin: 0 0 0.45rem;
    color: var(--calc-label);
    font-family: var(--font-mono, monospace);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.resource-calculator-header__hero > :first-child {
    margin-top: 0;
}

.resource-calculator-header__hero > :last-child {
    margin-bottom: 0;
}

.resource-calculator-header__hero h1 {
    max-width: none;
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 3rem);
    line-height: 1.03;
}

.resource-calculator-header__hero p {
    max-width: 64ch;
    margin: 0.55rem 0 0;
    color: var(--resource-muted);
    font-size: 0.9rem;
    line-height: 1.55;
}

.resource-calculator-header__summary {
    padding: 0 0 0.15rem;
    color: var(--resource-muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

.resource-calculator-header__summary > :first-child {
    margin-top: 0;
}

.resource-calculator-header__summary > :last-child {
    margin-bottom: 0;
}


/* =============================================================================================
 * Main workbench
 * ============================================================================================= */

.resource-calculator-page__main {
    padding-block: clamp(1rem, 2.5vw, 2rem) clamp(2rem, 5vw, 4rem);
}

.resource-calculator-workbench {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(50rem, 0.55fr);
    gap: 0.8rem;
    align-items: stretch;
}

.resource-calculator-workbench::before,
.resource-calculator-workbench::after {
    position: absolute;
    z-index: 2;
    width: 1.1rem;
    height: 1.1rem;
    pointer-events: none;
    content: "";
}

.resource-calculator-workbench::before {
    top: -0.28rem;
    left: -0.28rem;
    border-top: 0.12rem solid var(--resource-accent);
    border-left: 0.12rem solid var(--resource-accent);
}

.resource-calculator-workbench::after {
    right: -0.28rem;
    bottom: -0.28rem;
    border-right: 0.12rem solid var(--resource-accent);
    border-bottom: 0.12rem solid var(--resource-accent);
}


/* =============================================================================================
 * Calculator chassis
 * ============================================================================================= */

.resource-calculator-workbench__calculator,
.resource-calculator-reference {
    min-width: 0;
    border: var(--border-width, 0.0625rem) solid var(--calc-line-strong);
    border-radius: var(--calc-radius);
    background: var(--calc-panel);
}

.resource-calculator-workbench__topline,
.resource-calculator-reference__topline {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    min-height: 2rem;
    padding: 0.46rem 0.65rem;
    border-bottom: var(--border-width, 0.0625rem) solid var(--calc-line-strong);
    background:
        linear-gradient(
            90deg,
            color-mix(in srgb, var(--resource-accent-soft) 72%, var(--resource-surface)),
            var(--resource-surface)
        );
    color: var(--resource-accent);
    font-family: var(--font-mono, monospace);
    font-size: 0.64rem;
    font-weight: 850;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.resource-calculator-mount {
    min-height: 24rem;
}


/* =============================================================================================
 * Calculator renderer contract
 *
 * Preferred shortcode structure:
 *
 * .resource-calculator
 *   .resource-calculator__inputs
 *   .resource-calculator__results
 *
 * data-calculator-inputs / data-calculator-results are also supported.
 * ============================================================================================= */

.resource-calculator-mount :is(
    .resource-calculator,
    [data-resource-calculator]
) {
    display: grid;
    grid-template-columns: minmax(16rem, 1fr) minmax(15rem, 0.92fr);
    min-height: 24rem;
}

.resource-calculator-mount :is(
    .resource-calculator__inputs,
    .calculator-inputs,
    [data-calculator-inputs]
) {
    min-width: 0;
    padding: clamp(1rem, 2vw, 1.4rem);
    border-right: var(--border-width, 0.0625rem) solid var(--calc-line-strong);
    background:
        linear-gradient(135deg, transparent 0 49.7%, var(--calc-grid) 50%, transparent 50.3%),
        var(--resource-surface);
    background-size: 1.3rem 1.3rem;
}

.resource-calculator-mount :is(
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
) {
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: center;
    padding: clamp(1rem, 2.2vw, 1.6rem);
    background: var(--calc-display);
    color: var(--calc-display-text);
}

.resource-calculator-mount :is(
    .resource-calculator__inputs,
    .calculator-inputs,
    [data-calculator-inputs],
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
)::before {
    display: block;
    margin-bottom: 1rem;
    font-family: var(--font-mono, monospace);
    font-size: 0.65rem;
    font-weight: 850;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.resource-calculator-mount :is(
    .resource-calculator__inputs,
    .calculator-inputs,
    [data-calculator-inputs]
)::before {
    color: var(--resource-accent);
    content: "INPUT PARAMETERS";
}

.resource-calculator-mount :is(
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
)::before {
    color: color-mix(in srgb, var(--resource-accent-soft) 78%, white);
    content: "CALCULATED OUTPUT";
}


/* =============================================================================================
 * Technical controls
 * ============================================================================================= */

.resource-calculator-mount label {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--resource-text-strong);
    font-family: var(--font-mono, monospace);
    font-size: 0.85rem;
    font-weight: 750;
    letter-spacing: 0.035em;
}

.resource-calculator-mount input,
.resource-calculator-mount select,
.resource-calculator-mount textarea {
    width: 100%;
    min-height: 2.6rem;
    padding: 0.55rem 0.65rem;
    border: var(--border-width, 0.0625rem) solid var(--calc-line-strong);
    border-radius: 0;
    outline: 0;
    background: var(--resource-surface);
    color: var(--resource-text-strong);
    font: inherit;
}

.resource-calculator-mount input:focus,
.resource-calculator-mount select:focus,
.resource-calculator-mount textarea:focus {
    border-color: var(--resource-accent);
    box-shadow: inset 0 0 0 0.08rem var(--resource-accent);
}

.resource-calculator-mount button {
    min-height: 2.6rem;
    padding: 0.55rem 0.9rem;
    border: var(--border-width, 0.0625rem) solid var(--resource-accent);
    border-radius: 0;
    background: var(--resource-accent);
    color: var(--resource-text-inverse, #fff);
    font: inherit;
    font-family: var(--font-mono, monospace);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
}

.resource-calculator-mount button:hover,
.resource-calculator-mount button:focus-visible {
    background: var(--resource-accent-strong);
}

.resource-calculator-mount fieldset {
    margin: 0 0 1rem;
    padding: 0;
    border: 0;
}

.resource-calculator-mount legend {
    margin-bottom: 0.45rem;
    color: var(--resource-accent);
    font-family: var(--font-mono, monospace);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}


/* =============================================================================================
 * Output typography
 * ============================================================================================= */

.resource-calculator-mount :is(
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
) :is(output, strong, .result, .calculator-result, [data-calculator-result]) {
    color: #fff;
}

.resource-calculator-mount :is(
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
) output {
    display: block;
    font-family: var(--font-mono, monospace);
    font-size: clamp(1.6rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.05;
    overflow-wrap: anywhere;
}

.resource-calculator-mount :is(
    .resource-calculator__results,
    .calculator-results,
    [data-calculator-results]
) p {
    color: color-mix(in srgb, var(--calc-display-text) 72%, transparent);
}


/* =============================================================================================
 * Reference image bay
 * ============================================================================================= */

.resource-calculator-reference {
    display: flex;
    min-height: 24rem;
    flex-direction: column;
    overflow: hidden;
}

.resource-calculator-reference__content {
    display: grid;
    flex: 1 1 auto;
    place-items: center;
    min-height: 0;
    padding: clamp(0.8rem, 2vw, 1.2rem);
    background:
        linear-gradient(var(--calc-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--calc-grid) 1px, transparent 1px),
        var(--resource-surface);
    background-size: 1rem 1rem;
}

.resource-calculator-reference__content img,
.resource-calculator-reference__content figure {
    max-width: 100%;
    max-height: 26rem;
    margin: 0;
}

.resource-calculator-reference__content img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 26rem;
    border: 0;
    border-radius: 0;
    background: transparent;
    object-fit: contain;
}

.resource-calculator-reference__content figcaption {
    margin-top: 0.65rem;
    color: var(--resource-muted);
    font-family: var(--font-mono, monospace);
    font-size: 0.68rem;
    text-align: center;
}

/* Frost text that sits over the blueprint grid so the grid cannot compete with readability. */
.resource-calculator-reference__content > p:not(:has(img)) {
    width: fit-content;
    max-width: 100%;
    margin-inline: auto;
    padding: 0.5rem 0.7rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(0.35rem);
    -webkit-backdrop-filter: blur(0.35rem);
}

/* Images are commonly wrapped in <p>; keep those wrappers transparent. */
.resource-calculator-reference__content > p:has(img) {
    width: 100%;
    margin: 0;
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}


/* =============================================================================================
 * Notes
 * ============================================================================================= */

.resource-calculator-notes {
    max-width: 74ch;
    margin-top: clamp(1.25rem, 3vw, 2rem);
    padding-top: 1rem;
    border-top: var(--border-width, 0.0625rem) solid var(--resource-line);
}

.resource-calculator-notes .resource-prose > :first-child {
    margin-top: 0;
}

.resource-calculator-notes .resource-prose > :last-child {
    margin-bottom: 0;
}


/* =============================================================================================
 * Remove normal resource-page card language
 * ============================================================================================= */

.resource-calculator-page .resource-section,
.resource-calculator-page .resource-section:not(.resource-section--article) {
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}


/* =============================================================================================
 * Generated calculator form layout
 * ============================================================================================= */

/*
 * The calculator renderer currently adds an inline padding value to the form. !important is used
 * here deliberately so the page stylesheet owns the spacing and the generated form cannot sit
 * against the technical chassis border.
 */
.resource-calculator-mount .resource-calculator-form {
    padding: clamp(1.25rem, 2.5vw, 1.75rem) !important;
}

/* Keep the title/description compact but separate them clearly from the controls. */
.resource-calculator-form__header {
    margin-bottom: 1.5rem;
}

.resource-calculator-form__header h3 {
    margin: 0;
}

.resource-calculator-form__header p {
    margin: 0.4rem 0 0;
    color: var(--resource-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* "Calculate" selector is a distinct control before the parameter list. */
.resource-calculator-target {
    margin-bottom: 1.5rem;
}

/* Give each parameter a stronger vertical rhythm without making the interface oversized. */
.resource-calculator-fields {
    display: grid;
    gap: 1.35rem;
}

/*
 * Every calculator field uses the same three-column technical row:
 *
 *     LABEL | VALUE | UNIT
 *
 * Repeating the exact same grid definition on every field keeps all labels, values and unit
 * selectors vertically aligned across the entire calculator.
 */
.resource-calculator-field {
    display: grid;
    grid-template-columns: minmax(7.5rem, 0.42fr) minmax(0, 1fr) 5.25rem;
    gap: 0.5rem;
    align-items: center;
    min-width: 0;
}

.resource-calculator-field > label {
    margin: 0;
    padding-right: 0.35rem;
}

/*
 * Let the input group participate directly in the parent field grid. This places the value input
 * into column two and the unit selector into column three without introducing another independent
 * set of column widths.
 */
.resource-calculator-input-group {
    display: contents;
}

.resource-calculator-input-group > input {
    min-width: 0;
    grid-column: 2;
}

.resource-calculator-input-group > select,
.resource-calculator-input-group > [data-calc-unit] {
    grid-column: 3;
    width: 100%;
    min-width: 0;
    padding-inline: 0.5rem;
    font-family: var(--font-mono, monospace);
    text-align: center;
}

/* Separate actions and output from the final input row. */
.resource-calculator-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.6rem;
}

.resource-calculator-result {
    margin-top: 1.4rem;
    padding-top: 1rem;
    border-top: var(--border-width, 0.0625rem) solid var(--calc-line);
}

.resource-calculator-result > :first-child {
    margin-top: 0;
}

.resource-calculator-result > :last-child {
    margin-bottom: 0;
}

@media (max-width: 30rem) {
    .resource-calculator-field {
        grid-template-columns: minmax(6.5rem, 0.42fr) minmax(0, 1fr) 4.75rem;
        gap: 0.4rem;
    }
}


/* =============================================================================================
 * Responsive
 * ============================================================================================= */

@media (max-width: 70rem) {
    .resource-calculator-workbench {
        grid-template-columns: minmax(0, 1fr) minmax(14rem, 0.42fr);
    }

    .resource-calculator-mount :is(
        .resource-calculator,
        [data-resource-calculator]
    ) {
        grid-template-columns: 1fr 0.9fr;
    }
}

@media (max-width: 56rem) {
    .resource-calculator-header__inner,
    .resource-calculator-workbench {
        grid-template-columns: 1fr;
    }

    .resource-calculator-header__summary {
        padding-top: 0.75rem;
        border-top: var(--border-width, 0.0625rem) solid var(--resource-line);
    }

    .resource-calculator-reference {
        min-height: 18rem;
    }
}

@media (max-width: 42rem) {
    .resource-calculator-header__inner {
        padding-block: 1rem;
    }

    .resource-calculator-header__identity {
        padding-left: 0;
    }

    .resource-calculator-header__hero h1 {
        font-size: clamp(1.6rem, 8vw, 2.2rem);
    }

    .resource-calculator-page__main {
        width: min(calc(100% - 1rem), var(--resource-max-width));
        padding-top: 0.5rem;
    }

    .resource-calculator-workbench {
        gap: 0.5rem;
    }

    .resource-calculator-mount :is(
        .resource-calculator,
        [data-resource-calculator]
    ) {
        grid-template-columns: 1fr;
    }

    .resource-calculator-mount :is(
        .resource-calculator__inputs,
        .calculator-inputs,
        [data-calculator-inputs]
    ) {
        border-right: 0;
        border-bottom: var(--border-width, 0.0625rem) solid var(--calc-line-strong);
    }

    .resource-calculator-workbench__topline,
    .resource-calculator-reference__topline {
        font-size: 0.58rem;
    }
}