/* 颜色格式转换：仅本页特有的样式；色块属于内容层，保留真实颜色 */
.cc-checker {
    background: repeating-conic-gradient(var(--color-surface) 0% 25%, var(--color-bg-card) 0% 50%) 50% / 16px 16px;
}
.cc-preview {
    height: 150px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
}
.color-preview { width: 100%; height: 100%; }

.cc-native { position: relative; overflow: hidden; }
.cc-native input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; border: 0; padding: 0; }
.cc-contrast { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cc-contrast .tb-stat-value { font-size: 1.25rem; }

/* 各格式输入行 */
.color-inputs { display: grid; gap: 10px; }
.cc-row {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}
.cc-label { font-size: 0.8125rem; font-weight: 700; color: var(--color-text-secondary); font-family: var(--font-mono); }
.cc-fields { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; min-width: 0; }
.cc-fields > input { width: 100%; font-family: var(--font-mono); padding-left: 0.6rem; padding-right: 0.3rem; }
.cc-fields > input[type="text"] { grid-column: 1 / -1; }
.cc-note { margin-top: 0.75rem; }

/* 色块 */
.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); gap: 8px; }
.color-box {
    appearance: none;
    display: block;
    width: 100%;
    aspect-ratio: 1;
    min-height: 40px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
}
.color-box:hover { transform: scale(1.06); }
.cc-empty { grid-column: 1 / -1; font-size: 0.8125rem; color: var(--color-text-muted); }

.scheme-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.scheme-item { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.scheme-item .color-box { aspect-ratio: 4 / 3; }
.scheme-hex {
    appearance: none;
    border: 0;
    background: transparent;
    padding: 4px 0;
    min-height: 32px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    overflow: hidden;
    text-overflow: ellipsis;
}
.scheme-hex:hover { color: var(--color-primary); background: var(--color-surface); }

@media (max-width: 480px) {
    .cc-row { grid-template-columns: minmax(0, 1fr) auto; }
    .cc-label { grid-column: 1 / -1; margin-bottom: -6px; }
    .cc-fields { gap: 6px; }
    .scheme-hex { font-size: 0.625rem; }
    .scheme-grid { gap: 6px; }
}

/* 输入校验 */
.cc-fields > input[aria-invalid="true"] { border-color: var(--color-danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-danger) 16%, transparent); }