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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: #2c3e50;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: #7f8c8d;
    font-weight: 400;
}

.upload-section {
    margin-bottom: 2rem;
}

.upload-zone {
    border: 3px dashed #bdc3c7;
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    margin-bottom: 1.5rem;
    position: relative;
}

.upload-zone:hover {
    border-color: #3498db;
    background: #f8fafc;
}

.upload-zone.dragover {
    border-color: #2ecc71;
    background: #e8f8f5;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: #bdc3c7;
    transition: color 0.3s ease;
}

.upload-zone:hover .upload-icon {
    color: #3498db;
}

.upload-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
}

.upload-content p {
    color: #7f8c8d;
    font-size: 0.95rem;
}

.image-counter {
    position: absolute;
    top: 10px;
    right: 15px;
    background: #3498db;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.image-counter span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.select-button {
    background: #3498db;
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.image-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.preview-item {
    position: relative;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.preview-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.remove-button {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(231, 76, 60, 0.9);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: background 0.3s ease;
}

.remove-button:hover {
    background: #c0392b;
}

.analyze-button {
    width: 100%;
    background: #2ecc71;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.analyze-button:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.analyze-button:not(:disabled):hover {
    background: #27ae60;
    transform: translateY(-2px);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.result-section {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.result-section h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.prompt-output {
    position: relative;
}

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

.prompt-text {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1.5rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: #2c3e50;
    max-height: 400px;
    overflow-y: auto;
}

.copy-button {
    position: absolute;
    top: 0;
    right: 0;
    background: #3498db;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

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

.copy-button svg {
    width: 16px;
    height: 16px;
}

.copy-success {
    background: #2ecc71 !important;
}

.error-message {
    background: #e74c3c;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    text-align: center;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .upload-zone {
        padding: 2rem 1rem;
    }
    
    .image-preview {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .preview-image {
        height: 120px;
    }
}