* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
    color: #2c3e50;
}

.description {
    text-align: center;
    margin-bottom: 30px;
    color: #7f8c8d;
}

.upload-container {
    margin-bottom: 30px;
}

.drop-area {
    border: 2px dashed #3498db;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    background-color: #e3f2fd;
    transition: all 0.3s ease;
    cursor: pointer;
}

.drop-area:hover, .drop-area.active {
    background-color: #bbdefb;
    border-color: #2980b9;
}

.upload-button {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.3s;
}

.upload-button:hover {
    background-color: #2980b9;
}

.preview-container {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#resetButton {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#resetButton:hover {
    background-color: #c0392b;
}

.preview-content {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.original-image {
    flex: 1;
    min-width: 300px;
}

.original-image img {
    max-width: 100%;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.icon-previews {
    flex: 2;
    min-width: 300px;
}

.icons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.icon-item {
    text-align: center;
    background-color: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
}

.icon-item img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 5px;
}

.icon-item p {
    font-size: 12px;
    color: #7f8c8d;
}

.download-section {
    text-align: center;
}

.download-button {
    background-color: #2ecc71;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.download-button:hover {
    background-color: #27ae60;
}

h2, h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .preview-content {
        flex-direction: column;
    }
}