.preview-section {
    margin-bottom: 3rem;
}

.contrast-preview {
    width: 100%;
    min-height: 200px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.preview-text {
    font-size: 2rem;
    font-weight: 700;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.color-input-wrapper {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.result-card {
    background: #F9FAFB;
    padding: 1.5rem;
    border-radius: 16px;
    border-left: 4px solid #E5E7EB;
}

.result-card h3 {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ratio-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1rem;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.check-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: white;
}

.check-icon.pass {
    background: var(--success);
}

.check-icon.fail {
    background: var(--error);
}

.result-card.excellent {
    border-left-color: var(--success);
}

.result-card.good {
    border-left-color: var(--warning);
}

.result-card.poor {
    border-left-color: var(--error);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.section-title .material-icons {
    font-size: 28px;
    color: var(--primary-purple);
}

.section-title h2 {
    font-size: 1.5rem;
    color: var(--dark);
    font-weight: 700;
}

.vision-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.vision-card {
    background: #F9FAFB;
    padding: 1.5rem;
    border-radius: 16px;
    text-align: center;
}

.vision-preview {
    width: 100%;
    height: 100px;
    border-radius: 12px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.vision-name {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.vision-desc {
    font-size: 0.85rem;
    color: var(--gray);
}

.info-box {
    background: linear-gradient(135deg, #FFF4ED 0%, #FFE8D6 100%);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-orange);
}

.info-box h4 {
    color: var(--dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-box p {
    color: var(--gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .controls-grid,
    .results-grid {
        grid-template-columns: 1fr;
    }
}