/* ============================================================
   THE REF PAGE
   Tool Pages
   ============================================================ */


/* ============================================================
   1. TOOL PAGE
   ============================================================ */

.tool-page {
    width: 100%;
    overflow: hidden;
}

.tool-page>.share-bar {
    border-right: 0;
    border-left: 0;
    border-top: 0;
}


/* ============================================================
   2. TOOL WORKSPACE
   ============================================================ */

.tool-workspace {
    width: 100%;

    padding: clamp(1rem, 2vw, 2rem);

    border-bottom: var(--border-width) solid var(--color-border);

    background: var(--color-surface-2);
}


/* ============================================================
   3. TOOL SHELL
   ============================================================ */

.tool-shell {
    --tool-display-bg: #b5c0a9;
    --tool-display-text: #182018;
    --tool-display-muted: #455044;

    position: relative;

    width: 100%;

    border: var(--border-width-heavy) solid var(--color-border);

    background: var(--color-surface);
    color: var(--color-text);

    box-shadow:
        5px 5px 0 var(--color-border);
}

:root[data-theme="dark"] .tool-shell {
    --tool-display-bg: #7d8975;
    --tool-display-text: #101510;
    --tool-display-muted: #273027;
}

@media (prefers-color-scheme: dark) {

    :root:not([data-theme]) .tool-shell {
        --tool-display-bg: #7d8975;
        --tool-display-text: #101510;
        --tool-display-muted: #273027;
    }
}


/* ============================================================
   4. TOOL SHELL HEADER
   ============================================================ */

.tool-shell-header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-4);

    min-height: 54px;

    padding:
        var(--space-2) var(--space-3);

    border-bottom: var(--border-width) solid var(--color-border);

    background: var(--color-text);
    color: var(--color-bg);
}

.tool-shell-heading {
    display: flex;
    align-items: center;

    gap: var(--space-3);

    min-width: 0;
}

.tool-shell-indicator {
    display: block;
    flex: 0 0 auto;

    width: 10px;
    height: 10px;

    border: 1px solid currentColor;

    background: var(--color-green);
}

.tool-shell-title {
    min-width: 0;

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;

    letter-spacing: 0.07em;
    line-height: 1.2;
    text-transform: uppercase;

    white-space: nowrap;
}

.tool-shell-actions {
    display: flex;
    align-items: center;

    gap: var(--space-2);
}

.tool-shell-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: var(--space-2);

    min-height: 34px;

    padding:
        0 var(--space-3);

    border: 1px solid currentColor;

    background: transparent;
    color: inherit;

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;

    letter-spacing: 0.04em;
    line-height: 1;
    text-transform: uppercase;

    cursor: pointer;
}

.tool-shell-action:hover {
    border-color: var(--color-accent);

    background: var(--color-accent);
    color: var(--color-accent-text);
}


/* ============================================================
   5. TOOL MODES
   ============================================================ */

.tool-mode-panel {
    padding: var(--space-3);

    border-bottom: var(--border-width) solid var(--color-border);

    background: var(--color-surface-2);
}

.tool-mode-label {
    display: block;

    margin-bottom: var(--space-2);

    color: var(--color-text-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;

    letter-spacing: 0.06em;
    line-height: 1.2;
    text-transform: uppercase;
}

.tool-mode-grid {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: var(--space-2);
}


/* ------------------------------------------------------------
   Tool keys
   ------------------------------------------------------------ */

.tool-key {
    display: flex;
    align-items: center;
    justify-content: center;

    gap: var(--space-2);

    min-height: 48px;

    padding:
        var(--space-2) var(--space-3);

    border: var(--border-width) solid var(--color-border);

    background: var(--color-surface);
    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 800;

    letter-spacing: 0.04em;
    line-height: 1.15;
    text-align: center;
    text-transform: uppercase;

    cursor: pointer;

    box-shadow:
        2px 2px 0 var(--color-border);

    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast),
        color var(--transition-fast);
}

.tool-key:hover {
    background: var(--color-accent);
    color: var(--color-accent-text);
}

.tool-key:active,
.tool-key.is-active {
    transform: translate(2px, 2px);

    box-shadow: none;
}

.tool-key.is-active {
    background: var(--color-accent);
    color: var(--color-accent-text);
}


/* ============================================================
   6. TOOL CALCULATION AREA
   ============================================================ */

.tool-calculation-area {
    padding: clamp(1rem, 2vw, 1.5rem);

    background: var(--color-surface);
}

.tool-calculation-grid {
    display: grid;

    grid-template-columns:
        minmax(0, 1fr) minmax(0, 1fr) auto minmax(240px, 0.9fr);

    align-items: start;

    gap: var(--space-3);
}


/* ------------------------------------------------------------
   Fields
   ------------------------------------------------------------ */

.tool-field {
    min-width: 0;
}

.tool-field label {
    display: block;

    margin-bottom: var(--space-2);

    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 800;

    letter-spacing: 0.05em;
    line-height: 1.2;
    text-transform: uppercase;
}

.tool-input-wrap {
    display: flex;

    width: 100%;

    border: var(--border-width) solid var(--color-border);

    background: var(--color-bg);
}

.tool-input-wrap:focus-within {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.tool-input-wrap input,
.tool-input-wrap select {
    flex: 1 1 auto;

    min-width: 0;
    min-height: 54px;

    padding:
        0 var(--space-3);

    border: 0;
    outline: 0;

    background: transparent;
    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 700;
}

.tool-input-wrap select {
    cursor: pointer;
}

.tool-input-unit {
    display: grid;
    flex: 0 0 auto;

    place-items: center;

    min-width: 48px;

    padding:
        0 var(--space-3);

    border-left: 1px solid var(--color-border);

    background: var(--color-surface-2);
    color: var(--color-text-muted);

    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 800;
}

.tool-input-unit:empty {
    display: none;
}

.tool-help {
    min-height: 2.8em;

    margin:
        var(--space-2) 0 0;

    color: var(--color-text-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);

    line-height: 1.4;
}


/* ------------------------------------------------------------
   Calculation separator
   ------------------------------------------------------------ */

.tool-calculation-equals {
    display: grid;

    place-items: center;

    align-self: start;

    width: 42px;
    height: 54px;

    margin-top: 1.75rem;

    color: var(--color-text);

    font-size: var(--text-lg);
}


/* ============================================================
   7. TOOL RESULT DISPLAY
   ============================================================ */

.tool-result-panel {
    position: relative;

    overflow: hidden;

    min-width: 0;
    min-height: 132px;

    padding: var(--space-4);

    border: var(--border-width) solid var(--color-border);

    background: var(--tool-display-bg);
    color: var(--tool-display-text);
}

.tool-result-panel::before {
    position: absolute;

    inset: 0;

    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Ccircle cx='1' cy='1' r='.65' fill='%23182018' opacity='.10'/%3E%3C/svg%3E");

    background-size: 8px 8px;

    content: "";

    pointer-events: none;
}

.tool-result-panel>* {
    position: relative;

    z-index: 1;
}

.tool-display-label {
    display: block;

    margin-bottom: var(--space-2);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 800;

    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
}

.tool-display-result {
    display: block;

    overflow-wrap: anywhere;

    margin: 0;

    font-family: var(--font-mono);
    font-size: clamp(2.25rem, 4vw, 4rem);
    font-weight: 700;

    letter-spacing: -0.045em;
    line-height: 1;
}

.tool-display-formula {
    margin:
        var(--space-3) 0 0;

    color: var(--tool-display-muted);

    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;

    line-height: 1.35;
}

.tool-display-note {
    margin:
        var(--space-1) 0 0;

    color: var(--tool-display-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);

    line-height: 1.35;
}


/* ============================================================
   8. TOOL OPTIONS & ACTIONS
   ============================================================ */

/* ------------------------------------------------------------
   Generic option row
   ------------------------------------------------------------ */

.tool-option-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: var(--space-2);

    margin-top: var(--space-4);
}

.tool-option-label {
    color: var(--color-text-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 800;

    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.tool-option-row[hidden] {
    display: none;
}


/* ------------------------------------------------------------
   Tool actions
   ------------------------------------------------------------ */

.tool-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: var(--space-3);

    margin-top: var(--space-5);
}

.tool-actions .button {
    min-height: 46px;
}


/* ============================================================
   9. TOOL CONTENT
   ============================================================ */

.tool-content-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: var(--space-5);
}

.tool-content-block {
    min-width: 0;
}


/* ------------------------------------------------------------
   Formula blocks
   ------------------------------------------------------------ */

.tool-formula-list {
    display: grid;

    gap: var(--space-3);

    margin: 0;
}

.tool-formula {
    padding: var(--space-3);

    border-left: 4px solid var(--color-accent);

    background: var(--color-surface-2);
}

.tool-formula strong {
    display: block;

    margin-bottom: var(--space-1);

    color: var(--color-text);

    font-family: var(--font-ui);
    font-size: var(--text-sm);
}

.tool-formula code {
    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-sm);

    white-space: normal;
}


/* ------------------------------------------------------------
   Example blocks
   ------------------------------------------------------------ */

.tool-example-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: var(--space-3);
}

.tool-example {
    padding: var(--space-4);

    border: var(--border-width) solid var(--color-border);

    background: var(--color-surface-2);
}

.tool-example strong {
    display: block;

    margin-bottom: var(--space-2);

    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.tool-example p:last-child {
    margin-bottom: 0;
}


/* ============================================================
   10. PERCENTAGE CALCULATOR
   ============================================================ */

/* ------------------------------------------------------------
   Quick percentage presets
   ------------------------------------------------------------ */

.percentage-presets {
    margin-top: var(--space-4);
}

.percentage-presets[hidden] {
    display: none;
}

.percentage-preset-grid {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: var(--space-2);
}

.percentage-preset-grid .tool-key {
    min-width: 58px;
    min-height: 40px;

    padding-inline: var(--space-3);
}


/* ------------------------------------------------------------
   Percentage adjustment
   ------------------------------------------------------------ */

.percentage-adjustment {
    margin-top: var(--space-4);
}

.percentage-adjustment[hidden] {
    display: none;
}

.percentage-adjustment .tool-option-label {
    display: block;

    margin:
        0 0 var(--space-2);
}

.percentage-adjustment-buttons {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: var(--space-2);

    max-width: 360px;
}

.percentage-adjustment-buttons .tool-key {
    width: 100%;
    min-width: 0;
}



/* ============================================================
   11. UNIT CONVERTER
   ============================================================ */

.unit-converter {
    --converter-arrow-size: 46px;
}


/* ------------------------------------------------------------
   Converter controls
   ------------------------------------------------------------ */

.unit-converter-controls {
    padding: clamp(1rem, 2vw, 1.5rem);

    background: var(--color-surface);
}

.unit-converter-grid {
    display: grid;

    grid-template-columns:
        minmax(150px, 0.75fr) minmax(0, 1fr) var(--converter-arrow-size) minmax(0, 1fr);

    align-items: end;

    gap: var(--space-3);
}


/* ------------------------------------------------------------
   Select fields
   ------------------------------------------------------------ */

.tool-select-wrap {
    position: relative;

    display: flex;

    width: 100%;

    border: var(--border-width) solid var(--color-border);

    background: var(--color-bg);
}

.tool-select-wrap:focus-within {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.tool-select-wrap select {
    width: 100%;
    min-width: 0;
    min-height: 54px;

    padding:
        0 2.75rem 0 var(--space-3);

    border: 0;
    outline: 0;

    appearance: none;

    background: transparent;
    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;

    cursor: pointer;
}

.tool-select-wrap::after {
    position: absolute;

    top: 50%;
    right: var(--space-3);

    color: var(--color-text);

    font-family: "Font Awesome 7 Free";
    font-size: 0.75rem;
    font-weight: 900;

    content: "\f078";

    pointer-events: none;

    transform: translateY(-50%);
}


/* ------------------------------------------------------------
   Native select menu colors
   ------------------------------------------------------------ */

.tool-select-wrap select {
    color-scheme: light;
}

.tool-select-wrap select option {
    background: var(--color-surface);
    color: var(--color-text);
}


/* Manual dark mode */

:root[data-theme="dark"] .tool-select-wrap select {
    color-scheme: dark;
}

:root[data-theme="dark"] .tool-select-wrap select option {
    background: #1b1e1b;
    color: #e8e5dc;
}


/* Device dark mode when no manual preference is set */

@media (prefers-color-scheme: dark) {

    :root:not([data-theme]) .tool-select-wrap select {
        color-scheme: dark;
    }

    :root:not([data-theme]) .tool-select-wrap select option {
        background: #1b1e1b;
        color: #e8e5dc;
    }
}


/* ------------------------------------------------------------
   Swap control
   ------------------------------------------------------------ */

.unit-swap {
    display: grid;

    place-items: center;

    width: var(--converter-arrow-size);
    height: var(--converter-arrow-size);

    margin-bottom: 0.25rem;

    border: var(--border-width) solid var(--color-border);

    background: var(--color-surface);
    color: var(--color-text);

    box-shadow:
        2px 2px 0 var(--color-border);

    font-size: 1rem;

    cursor: pointer;

    transition:
        transform var(--transition-fast),
        background var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.unit-swap:hover {
    background: var(--color-accent);
    color: var(--color-accent-text);
}

.unit-swap:active {
    transform: translate(2px, 2px);

    box-shadow: none;
}


/* ------------------------------------------------------------
   Conversion row
   ------------------------------------------------------------ */

.unit-value-row {
    display: grid;

    grid-template-columns:
        minmax(0, 1fr) var(--converter-arrow-size) minmax(0, 1fr);

    align-items: center;

    gap: var(--space-3);

    margin-top: var(--space-4);
}

.unit-value-input {
    min-width: 0;
}

.unit-value-input .tool-input-wrap input {
    min-height: 62px;

    font-size: clamp(1.25rem, 2vw, 1.7rem);
}

.unit-conversion-arrow {
    display: grid;

    place-items: center;

    width: var(--converter-arrow-size);
    height: var(--converter-arrow-size);

    color: var(--color-text);

    font-size: 1.1rem;
}


/* ------------------------------------------------------------
   Result display
   ------------------------------------------------------------ */

.unit-result-panel {
    position: relative;

    overflow: hidden;

    min-width: 0;
    min-height: 96px;

    padding:
        var(--space-3) var(--space-4);

    border: var(--border-width) solid var(--color-border);

    background: var(--tool-display-bg);
    color: var(--tool-display-text);
}

.unit-result-panel::before {
    position: absolute;

    inset: 0;

    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Ccircle cx='1' cy='1' r='.65' fill='%23182018' opacity='.10'/%3E%3C/svg%3E");

    background-size: 8px 8px;

    content: "";

    pointer-events: none;
}

.unit-result-panel>* {
    position: relative;

    z-index: 1;
}

.unit-result-label {
    display: block;

    margin-bottom: var(--space-1);

    color: var(--tool-display-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 800;

    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.unit-result-value {
    display: block;

    overflow-wrap: anywhere;

    font-family: var(--font-mono);
    font-size: clamp(1.75rem, 3.8vw, 3.25rem);
    font-weight: 700;

    letter-spacing: -0.035em;
    line-height: 1.05;
}

.unit-result-meta {
    margin:
        var(--space-2) 0 0;

    color: var(--tool-display-muted);

    font-family: var(--font-mono);
    font-size: var(--text-xs);

    line-height: 1.35;
}


/* ------------------------------------------------------------
   Common conversions
   ------------------------------------------------------------ */

.unit-common {
    margin-top: var(--space-5);
    padding-top: var(--space-4);

    border-top: 1px solid var(--color-border-soft);
}

.unit-common-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap:
        var(--space-2) var(--space-3);

    margin: 0;
    padding: 0;

    list-style: none;
}

.unit-common-button {
    display: inline-flex;
    align-items: center;

    gap: var(--space-2);

    padding:
        var(--space-2) var(--space-3);

    border: 1px solid var(--color-border);

    background: var(--color-surface-2);
    color: var(--color-text);

    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;

    line-height: 1.2;

    cursor: pointer;

    transition:
        background var(--transition-fast),
        color var(--transition-fast);
}

.unit-common-button:hover,
.unit-common-button:focus-visible {
    background: var(--color-accent);
    color: var(--color-accent-text);
}


/* ------------------------------------------------------------
   Conversion reference table
   ------------------------------------------------------------ */

.unit-reference-table {
    width: 100%;

    border-collapse: collapse;

    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.unit-reference-table th,
.unit-reference-table td {
    padding:
        var(--space-3) var(--space-4);

    border: 1px solid var(--color-border-soft);

    text-align: left;
    vertical-align: top;
}

.unit-reference-table th {
    background: var(--color-surface-2);
    color: var(--color-text);

    font-weight: 800;

    text-transform: uppercase;
}

.unit-reference-table td {
    background: var(--color-surface);
}

.unit-reference-table code {
    color: var(--color-text);

    font-family: var(--font-mono);
}


/* ------------------------------------------------------------
   Unit converter responsive
   ------------------------------------------------------------ */

@media (max-width: 900px) {

    .unit-converter-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    .unit-converter-grid .unit-category-field {
        grid-column:
            1 / -1;
    }

    .unit-converter-grid .unit-swap {
        grid-column:
            1 / -1;

        justify-self: center;

        transform: rotate(90deg);
    }

    .unit-converter-grid .unit-swap:active {
        transform:
            translate(2px, 2px) rotate(90deg);
    }
}


@media (max-width: 560px) {

    .unit-converter-controls {
        padding: var(--space-3);
    }

    .unit-converter-grid {
        grid-template-columns: 1fr;
    }

    .unit-converter-grid .unit-category-field,
    .unit-converter-grid .unit-swap {
        grid-column: auto;
    }

    .unit-converter-grid .unit-swap {
        justify-self: center;

        margin:
            calc(var(--space-1) * -1) 0;

        transform: rotate(90deg);
    }

    .unit-value-row {
        grid-template-columns: 1fr;

        gap: var(--space-3);
    }

    .unit-conversion-arrow {
        width: 100%;
        height: 28px;

        transform: rotate(90deg);
    }

    .unit-result-panel {
        min-height: 112px;
    }

    .unit-result-value {
        font-size:
            clamp(2rem,
                11vw,
                3.25rem);
    }

    .unit-common-list {
        display: grid;

        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    .unit-common-button {
        justify-content: center;

        width: 100%;

        text-align: center;
    }

    .unit-reference-table {
        font-size: var(--text-xs);
    }

    .unit-reference-table th,
    .unit-reference-table td {
        padding: var(--space-2);
    }
}



/* ============================================================
   12. RELATED REFERENCES & TOOLS
   ============================================================ */

.tool-related {
    min-width: 0;

    border:
        var(--border-width) solid var(--color-border);

    background:
        var(--color-surface);
}


/* ------------------------------------------------------------
   Header
   ------------------------------------------------------------ */

.tool-related-header {
    display: flex;
    justify-content: center;
    flex-direction: column;

    min-height: 76px;

    padding:
        var(--space-3) var(--space-4);

    border-bottom:
        var(--border-width) solid var(--color-border);

    background:
        var(--color-surface-2);
}

.tool-related-header .eyebrow {
    margin-bottom:
        var(--space-1);
}

.tool-related-header h2 {
    margin: 0;

    font-size:
        clamp(1.35rem,
            2.2vw,
            2rem);

    line-height: 1;
}


/* ------------------------------------------------------------
   Body
   ------------------------------------------------------------ */

.tool-related-body {
    padding:
        clamp(1rem,
            2vw,
            1.75rem);
}


/* ============================================================
   13. FULLSCREEN / EXPANDED MODE
   ============================================================ */

body.tool-overlay-open {
    overflow: hidden;
}

.tool-shell.is-tool-expanded {
    position: fixed;

    z-index: 10000;

    inset: 0;

    overflow: auto;

    width: 100%;
    height: 100dvh;

    border: 0;

    padding:
        env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);

    background: var(--color-surface);

    box-shadow: none;
}

.tool-shell:fullscreen {
    overflow: auto;

    width: 100%;
    min-height: 100vh;

    border: 0;

    background: var(--color-surface);

    box-shadow: none;
}

.tool-shell.is-tool-expanded .tool-shell-header,
.tool-shell:fullscreen .tool-shell-header {
    position: sticky;

    z-index: 10;

    top: 0;
}


/* ============================================================
   14. RESPONSIVE
   ============================================================ */

@media (max-width: 1050px) {

    .tool-calculation-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    .tool-calculation-equals {
        display: none;
    }

    .tool-result-panel {
        grid-column:
            1 / -1;
    }
}


@media (max-width: 900px) {

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


@media (max-width: 760px) {

    .tool-workspace {
        padding: var(--space-3);
    }

    .tool-mode-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

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

    .tool-shell-title {
        white-space: normal;
    }
}


@media (max-width: 560px) {

    /* ------------------------------------------------------------
       Tool frame
       ------------------------------------------------------------ */

    .tool-workspace {
        padding: var(--space-3);

        background: var(--color-surface-2);
    }

    .tool-shell {
        border:
            var(--border-width-heavy) solid var(--color-border);

        box-shadow:
            4px 4px 0 var(--color-border);
    }


    /* ------------------------------------------------------------
       Tool header
       ------------------------------------------------------------ */

    .tool-shell-header {
        align-items: flex-start;
    }

    .tool-shell-action span {
        display: none;
    }

    .tool-shell-action {
        width: 36px;

        padding: 0;
    }


    /* ------------------------------------------------------------
       Modes
       ------------------------------------------------------------ */

    .tool-mode-panel {
        padding: var(--space-3);
    }


    /* ------------------------------------------------------------
       Calculation area
       ------------------------------------------------------------ */

    .tool-calculation-area {
        padding: var(--space-3);
    }

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

    .tool-result-panel {
        grid-column: auto;

        min-height: 120px;
    }

    .tool-display-result {
        font-size:
            clamp(2.5rem,
                14vw,
                4rem);
    }

    .tool-help {
        min-height: 0;
    }


    /* ------------------------------------------------------------
       Percentage presets
       ------------------------------------------------------------ */

    .percentage-preset-grid {
        display: grid;

        grid-template-columns:
            repeat(4, minmax(0, 1fr));
    }

    .percentage-preset-grid .tool-key {
        min-width: 0;

        padding-inline: var(--space-1);
    }


    /* ------------------------------------------------------------
       Percentage adjustment
       ------------------------------------------------------------ */

    .percentage-adjustment-buttons {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));

        max-width: none;
    }

    .percentage-adjustment-buttons .tool-key {
        min-height: 46px;

        padding:
            var(--space-2) var(--space-1);
    }


    /* ------------------------------------------------------------
       Actions
       ------------------------------------------------------------ */

    .tool-actions {
        display: grid;

        grid-template-columns:
            repeat(2, minmax(0, 1fr));

        align-items: stretch;
    }

    .tool-actions .button {
        width: 100%;
    }


    /* ------------------------------------------------------------
       Fullscreen override
       ------------------------------------------------------------ */

    .tool-shell.is-tool-expanded,
    .tool-shell:fullscreen {
        border: 0;

        box-shadow: none;
    }
}