/* Converted — centered single-column layout. */

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.conPage {
    flex: 1;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    padding: 40px 20px 80px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* --- Accessibility: visible keyboard focus ring ---
   Inherits the Done convention: 2px mint outline, 2px offset. */
.conCatBtn:focus-visible,
.conSubBtn:focus-visible,
.conInput:focus-visible,
.conSelect:focus-visible,
.conRetryBtn:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 2px;
}

/* --- Category tabs (Units / Currency / Timezones) --- */
.conCats {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: 999px;
    align-self: center;
}

.conCatBtn {
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.conCatBtn:hover {
    color: var(--text);
}

.conCatBtn--active {
    background: var(--bg);
    color: var(--text);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    border: 1px solid transparent;
}

/* --- Subcategory tabs (Length / Weight / ... under Units) --- */
.conSubs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.conSubs[hidden] {
    display: none;
}

.conSubBtn {
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.conSubBtn:hover {
    color: var(--text);
    border-color: var(--border-strong);
}

.conSubBtn--active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* --- Conversion row --- */
.conRow {
    display: flex;
    align-items: stretch;
    gap: 14px;
    padding: 0 4px;
}

.conSide {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.conSeparator {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 18px;
    padding-top: 18px; /* align roughly with the number field */
    user-select: none;
}

/* Wraps the number input so we can overlay a copy button on the right. */
.conInputWrap {
    position: relative;
}

.conInput {
    width: 100%;
    padding: 10px 36px 10px 12px; /* extra right padding for the copy button */
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 500;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    text-align: right;
    transition: border-color var(--transition);
}

/* Copy-to-clipboard button nested inside each number input's right edge. */
.conCopyBtn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 12px;
    opacity: 0.5;
    transition: opacity var(--transition), color var(--transition), background var(--transition);
}

.conCopyBtn:hover {
    color: var(--text);
    background: var(--bg-hover);
    opacity: 1;
}

.conCopyBtn:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 1px;
    opacity: 1;
}

.conCopyBtn[data-copied="true"] {
    color: var(--mint);
    opacity: 1;
}

/* datetime-local inputs are a bit chunkier — scale type down so the layout
   doesn't break. */
.conInput[type="datetime-local"] {
    font-size: 15px;
    text-align: left;
    font-family: var(--font-sans);
}

.conInput:focus {
    border-color: var(--accent);
    outline: none;
}

.conInput::placeholder {
    color: var(--text-tertiary);
}

.conSelect {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    transition: border-color var(--transition);
}

.conSelect:hover {
    border-color: var(--border-strong);
}

/* --- Swap button between the two sides --- */
.conSwap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    margin-top: 18px;
    border-radius: 50%;
    color: var(--text-tertiary);
    background: transparent;
    transition: all var(--transition);
    flex-shrink: 0;
}

.conSwap:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.conSwap:focus-visible {
    outline: 2px solid var(--mint);
    outline-offset: 2px;
}

/* --- Metadata line (timestamps, offsets, errors) --- */
.conMeta {
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: center;
    min-height: 1em;
}

.conMeta a {
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-color: rgba(0, 0, 0, 0.15);
    text-underline-offset: 2px;
}

.conMeta a:hover {
    color: var(--text);
}

.conMeta--warn {
    color: #a06a1a;
}

/* --- Error card (currency unreachable on first load) --- */
.conError {
    padding: 14px 16px;
    background: rgba(220, 50, 50, 0.06);
    border: 1px solid rgba(220, 50, 50, 0.15);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #b33;
    text-align: center;
}

.conError[hidden] {
    display: none;
}

.conRetryBtn {
    margin-top: 8px;
    padding: 6px 14px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    transition: opacity var(--transition);
}

.conRetryBtn:hover { opacity: 0.85; }

/* --- Footer (shared family pattern) --- */
.appFooter {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-sidebar);
    font-size: 11px;
    color: var(--text-tertiary);
    text-align: center;
}

.appFooter a {
    color: var(--text-secondary);
}

.appFooterMeta {
    opacity: 0.75;
}

/* --- Responsive --- */
@media (max-width: 520px) {
    .conPage { padding: 28px 16px 60px; gap: 18px; }
    .conInput { font-size: 20px; }
    .conCatBtn { padding: 7px 16px; font-size: 13px; }
}

@media (max-width: 420px) {
    /* Stack vertically on narrow screens — side-by-side conversion gets
       too cramped below this width. */
    .conRow { flex-direction: column; gap: 10px; }
    .conSeparator {
        transform: rotate(90deg);
        padding-top: 0;
    }
    .conSwap { margin-top: 0; align-self: center; }
}