main {
    padding: 30px;
}

.converter-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.panel {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.panel h2 {
    font-size: 1.35rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.ico-size,
.option-block {
    margin-top: 24px;
}

.option-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: block;
}

.ico-size select {
    margin-bottom: 8px;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    background: var(--bg-white);
    cursor: pointer;
    transition: border-color 0.3s ease, background 0.3s ease;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(45, 45, 45, 0.04);
}

.upload-area p {
    color: var(--text-secondary);
    margin-top: 10px;
}

.btn-full {
    width: 100%;
    margin-top: 16px;
}

.btn-disabled {
    pointer-events: none;
    opacity: 0.5;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.options-grid label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.button-row {
    margin-top: 24px;
}

.preview-area {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.preview-area img {
    max-width: 180px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 12px;
}

.size-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 20px;
}

.size-badge {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 10px 16px;
    min-width: 90px;
    background: var(--bg-white);
    font-weight: 600;
    color: var(--text-primary);
}

.result-card {
    margin-top: 24px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-white);
}

.result-card h3 {
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.result-detail {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.result-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.result-list li {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
    color: var(--text-secondary);
    gap: 12px;
}

.result-list li span {
    font-weight: 600;
    color: var(--text-primary);
}

.result-list a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.result-list a:hover {
    text-decoration: underline;
}

.helper-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

.status-success {
    color: #1f7a1f;
}

.status-error {
    color: #b00020;
}

.status-info {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    main {
        padding: 20px;
    }

    .panel {
        padding: 18px;
    }
}