.color-class-library {
    width: 100%;
}

.color-categories-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg, 20px);
}

.color-category {
    background: var(--bg-tertiary, #2d2d2d);
    border-radius: var(--radius-lg, 12px);
    overflow: hidden;
    transition: all 0.2s ease;
}

.color-category.collapsed .color-topics-container {
    display: none;
}

.color-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md, 14px) var(--spacing-lg, 20px);
    cursor: pointer;
    transition: background 0.2s ease;
}

.color-category-header:hover {
    background: var(--bg-secondary, #3a3a3a);
}

.category-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 12px);
}

.category-icon {
    font-size: 24px;
}

.color-category-header h3 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold, 700);
    color: var(--accent-primary, #ffd700);
    margin: 0;
}

.category-toggle {
    color: var(--text-muted, #808080);
    transition: transform 0.2s ease;
}

.color-category.collapsed .category-toggle i {
    transform: rotate(-90deg);
}

.color-topics-container {
    padding: var(--spacing-lg, 20px) var(--spacing-lg, 20px) var(--spacing-lg, 20px)
        var(--spacing-lg, 20px);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md, 16px);
}

.color-topic-card {
    background: var(--bg-secondary, #252525);
    border-radius: var(--radius-md, 10px);
    padding: var(--spacing-md, 16px);
    transition: all 0.2s ease;
}

.color-topic-card:hover {
    background: var(--bg-secondary, #2a2a2a);
}

.color-topic-title {
    font-size: 1rem;
    font-weight: var(--font-weight-bold, 700);
    color: var(--text-primary, #ffffff);
    margin-bottom: var(--spacing-sm, 8px);
}

.color-topic-description {
    font-size: 0.85rem;
    color: var(--text-secondary, #e0e0e0);
    margin-bottom: var(--spacing-md, 12px);
    line-height: 1.4;
}

.color-topic-preview {
    display: flex;
    gap: 6px;
    margin-bottom: var(--spacing-md, 12px);
    flex-wrap: wrap;
}

.topic-swatch {
    flex: 1;
    min-width: 35px;
    height: 45px;
    border-radius: var(--radius-sm, 6px);
    cursor: pointer;
    transition: transform 0.1s ease;
}

.topic-swatch:hover {
    transform: scale(1.05);
}

.color-topic-tips {
    padding: var(--spacing-sm, 12px);
    margin-bottom: var(--spacing-sm, 10px);
}

.tips-title {
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold, 700);
    color: var(--accent-primary, #ffd700);
    margin-bottom: var(--spacing-xs, 8px);
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-topic-tips ul {
    margin: 0;
    padding-left: var(--spacing-lg, 20px);
}

.color-topic-tips li {
    font-size: 0.8rem;
    margin-bottom: 6px;
    color: var(--text-muted, #b0b0b0);
    line-height: 1.4;
}

.color-topic-tips li:last-child {
    margin-bottom: 0;
}

.color-topic-example {
    padding: var(--spacing-sm, 10px);
    font-size: 0.8rem;
    color: var(--text-secondary, #e0e0e0);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 8px);
}

.color-topic-example i {
    color: var(--accent-primary, #ffd700);
}

@media (max-width: 768px) {
    .color-category-header {
        padding: var(--spacing-sm, 12px) var(--spacing-md, 16px);
    }

    .category-icon {
        font-size: 20px;
    }

    .color-category-header h3 {
        font-size: 1rem;
    }

    .color-topics-container {
        padding: var(--spacing-md, 16px);
        gap: var(--spacing-sm, 12px);
    }

    .color-topic-card {
        padding: var(--spacing-sm, 12px);
    }

    .color-topic-title {
        font-size: 0.95rem;
    }

    .topic-swatch {
        min-width: 30px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .topic-swatch {
        min-width: 25px;
        height: 35px;
    }

    .color-topic-tips li {
        font-size: 0.75rem;
    }

    .color-topic-example {
        font-size: 0.7rem;
        flex-wrap: wrap;
    }
}