* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 15px;
    color: #2c3e50;
}

p {
    text-align: center;
    margin-bottom: 25px;
    color: #7f8c8d;
}

/* API Key Container */
.api-key-container {
    margin: 0 auto 25px;
    padding: 15px;
    background-color: #f5f5f5;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid #e0e0e0;
}

.api-key-container label {
    margin-bottom: 8px;
    font-weight: bold;
    color: #34495e;
}

.api-key-container input {
    width: 100%;
    max-width: 500px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.upload-section {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.upload-label {
    display: inline-block;
    padding: 12px 24px;
    background-color: #3498db;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.upload-label input {
    display: none;
}

.preview-section {
    display: flex;
    justify-content: space-between;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.image-container {
    width: 48%;
    padding: 15px;
    background-color: #f5f5f5;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 15px;
}

.image-container h3 {
    text-align: center;
    margin-bottom: 10px;
    color: #34495e;
}

.image-container img {
    max-width: 100%;
    max-height: 300px;
    display: block;
    margin: 0 auto;
    border: 1px solid #ddd;
    background-color: #fff;
}

button {
    display: block;
    width: 80%;
    margin: 0 auto 15px;
    padding: 12px;
    background-color: #2ecc71;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

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

button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #3498db;
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hidden {
    display: none;
}

.error {
    color: #e74c3c;
    text-align: center;
    padding: 10px;
    margin-top: 15px;
    background-color: #fadbd8;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .preview-section {
        flex-direction: column;
    }
    
    .image-container {
        width: 100%;
    }
    
    .api-key-container {
        padding: 10px;
    }
}