.page-tool--contrast-checker .tool-page {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.page-tool--contrast-checker .tool-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
}

.page-tool--contrast-checker .tool-colors,
.page-tool--contrast-checker .tool-preview {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.page-tool--contrast-checker .tool-colors__body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.page-tool--contrast-checker .color-field {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.page-tool--contrast-checker .color-field__row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-tool--contrast-checker .color-swatch {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    padding: 3px;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
}

.page-tool--contrast-checker .color-swatch::-webkit-color-swatch-wrapper {
    padding: 0;
}

.page-tool--contrast-checker .color-swatch::-webkit-color-swatch {
    border: 0;
    border-radius: var(--radius-xs);
}

.page-tool--contrast-checker .color-swatch::-moz-color-swatch {
    border: 0;
    border-radius: var(--radius-xs);
}

.page-tool--contrast-checker .tool-color-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: lowercase;
}

.page-tool--contrast-checker .tool-hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.8rem;
}

.page-tool--contrast-checker .tool-hint code {
    padding: 0.05rem 0.3rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-xs);
    background: var(--surface-3);
    color: var(--ink-2);
    font-family: var(--font-mono);
}

.page-tool--contrast-checker .tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 2px;
}

.page-tool--contrast-checker .tool-preview .panel__body--flush {
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
}

.page-tool--contrast-checker .tool-preview__stage {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
    padding: 26px;
    background: #ffffff;
    color: #1a1a1a;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.page-tool--contrast-checker .tool-preview__large {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.3;
}

.page-tool--contrast-checker .tool-preview__normal {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
}

.page-tool--contrast-checker .tool-preview__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 4px 0 0;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.page-tool--contrast-checker .tool-preview__chip {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.7rem;
    border: 1px solid currentColor;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

.page-tool--contrast-checker .tool-preview__link {
    text-decoration: underline;
}

.page-tool--contrast-checker .tool-verdict {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 6px 18px;
    padding: 20px 22px;
    border: 1px solid var(--line);
    border-left: 6px solid var(--line-2);
    border-radius: var(--radius);
    background: var(--surface-2);
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.page-tool--contrast-checker .tool-verdict__label {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1;
    text-transform: uppercase;
    color: var(--ink);
}

.page-tool--contrast-checker .tool-verdict__ratio {
    font-family: var(--font-mono);
    font-size: 2.35rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--ink);
}

.page-tool--contrast-checker .tool-verdict__detail {
    flex: 1 1 100%;
    color: var(--muted);
    font-size: 0.9rem;
}

.page-tool--contrast-checker .tool-verdict[data-state="pass"] {
    border-color: var(--success);
    border-left-color: var(--success);
    background: var(--success-soft);
}

.page-tool--contrast-checker .tool-verdict[data-state="pass"] .tool-verdict__label,
.page-tool--contrast-checker .tool-verdict[data-state="pass"] .tool-verdict__ratio {
    color: var(--success);
}

.page-tool--contrast-checker .tool-verdict[data-state="fail"] {
    border-color: var(--danger);
    border-left-color: var(--danger);
    background: var(--danger-soft);
}

.page-tool--contrast-checker .tool-verdict[data-state="fail"] .tool-verdict__label,
.page-tool--contrast-checker .tool-verdict[data-state="fail"] .tool-verdict__ratio {
    color: var(--danger);
}

.page-tool--contrast-checker .tool-verdict[data-state="error"] {
    border-left-color: var(--danger);
}

.page-tool--contrast-checker .tool-verdict[data-state="error"] .tool-verdict__detail {
    color: var(--danger);
    font-weight: 500;
}

.page-tool--contrast-checker .tool-details {
    margin-top: 20px;
}

.page-tool--contrast-checker .tool-details__title {
    margin: 0 0 8px;
    color: var(--muted);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.page-tool--contrast-checker .tool-status {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.page-tool--contrast-checker .tool-status:empty {
    display: none;
}

.page-tool--contrast-checker .tool-status--error {
    color: var(--danger);
    font-weight: 500;
}

.page-tool--contrast-checker .tool-status--success {
    color: var(--success);
    font-weight: 500;
}

.page-tool--contrast-checker .tool-levels {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.page-tool--contrast-checker .tool-level {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto auto;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--line);
    font-size: 0.86rem;
}

.page-tool--contrast-checker .tool-level:nth-child(even) {
    background: var(--surface-2);
}

.page-tool--contrast-checker .tool-level:last-child {
    border-bottom: 0;
}

.page-tool--contrast-checker .tool-level__context {
    color: var(--ink-2);
}

.page-tool--contrast-checker .tool-level__threshold {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--muted);
    white-space: nowrap;
}

.page-tool--contrast-checker .tool-level__verdict {
    min-width: 3.4em;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.page-tool--contrast-checker .tool-level--pass .tool-level__verdict {
    color: var(--success);
}

.page-tool--contrast-checker .tool-level--fail .tool-level__verdict {
    color: var(--danger);
}

.page-tool--contrast-checker .tool-levels__empty {
    margin: 0;
    padding: 18px 14px;
    color: var(--muted);
    font-size: 0.86rem;
}

.page-tool--contrast-checker .tool-blend-note {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 0.8rem;
}

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

.page-tool--contrast-checker .tool-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--contrast-checker .tool-workspace {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-tool--contrast-checker .tool-level {
        grid-template-columns: minmax(0, 1fr) auto;
        row-gap: 6px;
    }

    .page-tool--contrast-checker .tool-level__threshold {
        grid-column: 1 / -1;
    }

    .page-tool--contrast-checker .tool-level__verdict {
        text-align: left;
    }
}