.upload-area {
    border: 3px dashed var(--border-2);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    background: var(--surface);
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(254, 119, 67, 0.02);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(254, 119, 67, 0.05);
}

.format-btn {
    padding: 14px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 700;
    color: var(--navy);
    font-size: 14px;
}

.format-btn:hover {
    border-color: var(--primary);
    background: rgba(254, 119, 67, 0.05);
}

.format-btn.selected {
    border-color: var(--primary);
    background: rgba(254, 119, 67, 0.1);
    color: var(--primary);
}

.image-preview-container {
    max-width: 600px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--border);
    background: var(--bg);
}

.tool-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

details {
    margin-bottom: 12px;
    padding: 16px;
    background: rgba(68, 125, 155, 0.05);
    border-radius: 12px;
    border: 2px solid var(--border);
    cursor: pointer;
}

details summary {
    font-weight: 700;
    color: var(--navy);
    cursor: pointer;
    list-style: none;
}

details summary::-webkit-details-marker {
    display: none;
}

details[open] summary {
    color: var(--primary);
}

details p {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    color: var(--text-soft);
}