.page-tool--date-difference-calculator .tool-page {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.page-tool--date-difference-calculator .tool-workspace {
    display: grid;
    grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.page-tool--date-difference-calculator .ddc-controls__head-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.page-tool--date-difference-calculator .ddc-controls__body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.page-tool--date-difference-calculator .ddc-date-grid,
.page-tool--date-difference-calculator .ddc-time-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.page-tool--date-difference-calculator .ddc-time-grid[hidden] {
    display: none;
}

.page-tool--date-difference-calculator .ddc-toggle {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 12px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--ink-2);
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.page-tool--date-difference-calculator .ddc-toggle:hover {
    border-color: var(--line-strong);
}

.page-tool--date-difference-calculator .ddc-toggle:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.page-tool--date-difference-calculator .ddc-toggle input {
    flex: 0 0 auto;
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--accent);
}

.page-tool--date-difference-calculator .ddc-presets {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.page-tool--date-difference-calculator .ddc-presets__row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.page-tool--date-difference-calculator .ddc-hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.55;
}

.page-tool--date-difference-calculator .ddc-result {
    min-width: 0;
}

.page-tool--date-difference-calculator .ddc-result__body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.page-tool--date-difference-calculator .ddc-status {
    display: none;
}

.page-tool--date-difference-calculator .ddc-status.is-visible {
    display: block;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.page-tool--date-difference-calculator .ddc-status.is-visible.status--error {
    border-color: var(--danger);
    border-left-color: var(--danger);
    background: var(--danger-soft);
    color: var(--danger);
}

.page-tool--date-difference-calculator .ddc-status.is-visible.status--success {
    border-color: var(--success);
    border-left-color: var(--success);
    background: var(--success-soft);
    color: var(--success);
}

.page-tool--date-difference-calculator .ddc-hero {
    padding: 20px 20px 18px;
    border: 1px solid var(--accent-line);
    border-radius: var(--radius-lg);
    background: var(--accent-soft);
}

.page-tool--date-difference-calculator .ddc-hero__value {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
    color: var(--accent);
}

.page-tool--date-difference-calculator .ddc-hero__value > span:first-child {
    font-family: var(--font-mono);
    font-size: clamp(2.6rem, 1.8rem + 3.2vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.page-tool--date-difference-calculator .ddc-hero__unit {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--ink-2);
}

.page-tool--date-difference-calculator .ddc-hero__note {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 0.86rem;
}

.page-tool--date-difference-calculator .ddc-summary {
    margin: 0;
    font-size: 1rem;
    color: var(--ink);
}

.page-tool--date-difference-calculator .ddc-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1px;
    margin: 0;
    padding: 1px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--line);
    overflow: hidden;
}

.page-tool--date-difference-calculator .ddc-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 11px 13px;
    background: var(--surface);
}

.page-tool--date-difference-calculator .ddc-stat__label {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--faint);
}

.page-tool--date-difference-calculator .ddc-stat__value {
    margin: 0;
    font-size: 0.95rem;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
    overflow-wrap: anywhere;
}

.page-tool--date-difference-calculator .ddc-report {
    min-height: 8rem;
    margin: 0;
}

.page-tool--date-difference-calculator .ddc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.page-tool--date-difference-calculator .ddc-about__text {
    max-width: 80ch;
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.page-tool--date-difference-calculator .ddc-about__text code {
    padding: 0.05rem 0.3rem;
    border-radius: var(--radius-xs);
    background: var(--surface-3);
    color: var(--ink-2);
    font-family: var(--font-mono);
}

@media (max-width: 860px) {
    .page-tool--date-difference-calculator .tool-workspace {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-tool--date-difference-calculator .ddc-date-grid,
    .page-tool--date-difference-calculator .ddc-time-grid {
        grid-template-columns: 1fr;
    }
}