style.css

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
}

main {
    flex: 1;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 2rem;
}

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

.upload-area {
    border: 2px dashed #cbd5e0;
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f7fafc;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: #667eea;
    background: #edf2f7;
}

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

.upload-icon {
    width: 48px;
    height: 48px;
    color: #667eea;
}

.upload-area p {
    color: #4a5568;
    font-size: 1.1rem;
}

.upload-area span {
    color: #667eea;
    font-weight: 600;
}

.image-preview {
    position: relative;
    display: inline-block;
    margin: 0 auto;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.remove-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #e53e3e;
    color: white;
    border: none;
    font-size: 20px;
    cursor: pointer;
    transition: transform 0.2s;
}

.remove-btn:hover {
    transform: scale(1.1);
}

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

.input-group {
    display: flex;
    gap: 0.5rem;
}

#questionInput {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

#questionInput:focus {
    outline: none;
    border-color: #667eea;
}

#askBtn {
    padding: 0.75rem 2rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

#askBtn:hover:not(:disabled) {
    background: #5a67d8;
}

#askBtn:disabled {
    background: #cbd5e0;
    cursor: not-allowed;
}

.response-section h2 {
    margin-bottom: 1rem;
    color: #2d3748;
}

.response-content {
    background: #f7fafc;
    border-radius: 10px;
    padding: 1.5rem;
    min-height: 100px;
}

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

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e2e8f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.response-text {
    color: #2d3748;
    line-height: 1.8;
}

footer {
    text-align: center;
    margin-top: 2rem;
}

footer p {
    color: rgba(255, 255, 255, 0.8);
}

footer a {
    color: white;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    main {
        padding: 1.5rem;
    }
    
    .upload-area {
        padding: 2rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    #askBtn {
        align-self: flex-end;
    }
}