.ultimate-image-converter {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.uic-container {
    width: 100%;
}

.uic-title {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.uic-notices {
    margin-bottom: 1.5rem;
}

.uic-notice {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none;
}

.uic-notice.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.uic-notice.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.uic-upload-area {
    margin-bottom: 2rem;
}

.uic-drop-zone {
    border: 3px dashed #3498db;
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    background: #f8fafc;
    transition: all 0.3s ease;
    position: relative;
}

.uic-drop-zone:hover {
    background: #edf2f7;
    border-color: #2980b9;
}

.uic-drop-zone.dragover {
    background: #e3f2fd;
    border-color: #2196f3;
    transform: scale(1.02);
}

.uic-drop-zone svg {
    color: #3498db;
    margin-bottom: 1rem;
}

.uic-drop-zone h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.uic-file-info {
    color: #7f8c8d;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

#uic-images {
    display: none;
}

.uic-browse-btn {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
}

.uic-browse-btn:hover {
    background: #2980b9;
}

.uic-file-list {
    margin-top: 1.5rem;
}

.uic-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border-left: 4px solid #3498db;
}

.uic-file-info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.uic-file-icon {
    width: 24px;
    height: 24px;
    color: #3498db;
}

.uic-file-name {
    font-weight: 500;
    color: #2c3e50;
}

.uic-file-size {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.uic-remove-file {
    background: #e74c3c;
    color: white;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.uic-remove-file:hover {
    background: #c0392b;
}

.uic-settings {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.uic-setting-group {
    margin-bottom: 1.5rem;
}

.uic-setting-group:last-child {
    margin-bottom: 0;
}

.uic-setting-group label {
    display: block;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.uic-setting-group select,
.uic-setting-group input[type="range"] {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    background: white;
    font-size: 1rem;
}

.uic-setting-group input[type="checkbox"] {
    margin-right: 0.5rem;
}

.uic-setting-group small {
    display: block;
    color: #7f8c8d;
    margin-top: 0.25rem;
    font-size: 0.85rem;
}

#uic-quality {
    margin-top: 0.5rem;
}

#uic-quality-value {
    font-weight: bold;
    color: #3498db;
}

.uic-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.uic-convert-btn,
.uic-clear-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.uic-convert-btn {
    background: #2ecc71;
    color: white;
}

.uic-convert-btn:hover:not(:disabled) {
    background: #27ae60;
    transform: translateY(-2px);
}

.uic-convert-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.uic-clear-btn {
    background: #95a5a6;
    color: white;
}

.uic-clear-btn:hover {
    background: #7f8c8d;
}

.uic-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: uic-spin 1s linear infinite;
}

@keyframes uic-spin {
    to { transform: rotate(360deg); }
}

.uic-results {
    display: none;
}

.uic-results h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.uic-results-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.uic-result-item {
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e0e0e0;
    transition: transform 0.3s ease;
}

.uic-result-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.uic-result-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-bottom: 1px solid #e0e0e0;
}

.uic-result-info {
    padding: 1rem;
}

.uic-result-name {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 500;
    word-break: break-all;
}

.uic-result-actions {
    display: flex;
    gap: 0.5rem;
}

.uic-download-btn {
    flex: 1;
    background: #3498db;
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.uic-download-btn:hover {
    background: #2980b9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .ultimate-image-converter {
        padding: 1rem;
        margin: 1rem;
    }
    
    .uic-actions {
        flex-direction: column;
    }
    
    .uic-results-list {
        grid-template-columns: 1fr;
    }
}