/* ==========================================================================
   convert.css — the calculator pages.

   Shared by the four unit converters, the running pace calculator and the
   speed/distance/time calculator. None of them touch the GPS, so none of them
   load speedo.css.
   ========================================================================== */

.calc {
    width: 100%;
    max-width: 560px;
    padding: 4px 0 8px;
}

/* ---------------- converter ---------------- */
.conv {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: end;
    gap: 12px;
    width: 100%;
}

.conv-side {
    min-width: 0;
}

.conv-side .field-label {
    justify-content: center;
    margin-bottom: 8px;
}

.conv-input {
    width: 100%;
    height: 78px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid var(--input-border-color);
    background: var(--surface-raised);
    color: var(--text-color);
    font-family: var(--font-mono);
    font-size: clamp(1.6rem, 8vw, 2.4rem);
    font-weight: 500;
    font-feature-settings: "tnum";
    text-align: center;
    appearance: none;
    -webkit-appearance: none;
}

.conv-input:focus {
    outline: 0;
    border: 2px solid var(--primary-color);
    padding: 0 11px;
}

.conv-input[type=number] {
    -moz-appearance: textfield;
}

.conv-input[type=number]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* The output is a read-only field rather than a <p> so it lines up exactly
   with the input and can still be selected and copied. */
.conv-input[readonly] {
    background: transparent;
    border-style: dashed;
    color: var(--primary-color);
}

.conv-swap {
    margin-bottom: 18px;
}

.conv-swap .icon-button {
    background: var(--surface-raised);
    border: 1px solid var(--divider-color);
    color: var(--primary-color);
    width: 44px;
    height: 44px;
}

.conv-formula {
    margin-top: 18px;
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--surface-raised);
    font-family: var(--font-mono);
    font-size: .9rem;
    color: var(--text-color-secondary);
    text-align: center;
    overflow-x: auto;
    white-space: nowrap;
}

.conv-formula strong {
    color: var(--text-color);
    font-weight: 500;
}

.conv-quick {
    margin-top: 20px;
}

.conv-quick .field-label {
    justify-content: center;
}

.conv-quick .chips {
    justify-content: center;
}

.copy-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 18px;
}

/* ---------------- pace + speed/distance/time ---------------- */
.calc-grid {
    display: grid;
    gap: 18px;
}

.calc-result {
    margin-top: 4px;
    padding: 20px 16px;
    border-radius: 12px;
    background: var(--surface-raised);
    box-shadow: var(--shadow-1);
    text-align: center;
}

.calc-result .k {
    display: block;
    font-size: .6875rem;
    font-weight: 500;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: var(--text-color-secondary);
    margin-bottom: 6px;
}

.calc-result .v {
    display: block;
    font-family: var(--font-mono);
    font-size: clamp(2rem, 10vw, 3rem);
    font-weight: 500;
    font-feature-settings: "tnum";
    color: var(--primary-color);
    line-height: 1.1;
}

.calc-result .sub {
    display: block;
    font-size: .875rem;
    color: var(--text-color-secondary);
    margin-top: 8px;
}

/* Three inputs, one of which is left blank — that's the one being solved for.
   The blank one is highlighted so it's obvious which is the answer. */
.solve-for {
    border-color: var(--primary-color);
}

.time-group {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.time-group .input {
    text-align: center;
    font-family: var(--font-mono);
    font-feature-settings: "tnum";
}

.time-group .unit-cap {
    display: block;
    font-size: .6875rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-color-secondary);
    text-align: center;
    padding-top: 6px;
}

.split-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: end;
}

.split-row .select {
    min-width: 120px;
}

.pace-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 22px;
    font-size: .88rem;
}

.pace-table th,
.pace-table td {
    padding: 9px 6px;
    text-align: right;
    border-bottom: 1px solid var(--divider-color);
    color: var(--text-color-secondary);
}

.pace-table td {
    font-family: var(--font-mono);
    font-feature-settings: "tnum";
}

.pace-table th {
    font-size: .6875rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    font-weight: 500;
    color: var(--text-color);
}

.pace-table th:first-child,
.pace-table td:first-child {
    text-align: left;
}

/* The reference table is real HTML in the page, not built by JavaScript, so
   the conversions are there for a search engine and for a printed page. */
.ref-table-wrap {
    width: 100%;
    overflow-x: auto;
}

@media (max-width:520px) {
    .conv {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .conv-swap {
        margin: 2px auto;
        transform: rotate(90deg);
    }

    .time-group {
        gap: 6px;
    }
}