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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    color: #666;
}

.upload-section {
    margin-bottom: 40px;
}

.upload-group {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 30px;
    align-items: center;
    margin-bottom: 30px;
}

.upload-box {
    position: relative;
    min-height: 250px;
    border: 3px dashed #ddd;
    border-radius: 15px;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}

.upload-box:hover {
    border-color: #667eea;
    background: #f0f4ff;
    transform: translateY(-2px);
}

.upload-box.dragover {
    border-color: #667eea;
    background: #f0f4ff;
    transform: scale(1.02);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 20px;
    text-align: center;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.7;
}

.upload-content p {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 5px;
}

.upload-subtext {
    font-size: 0.9rem !important;
    color: #999 !important;
}

input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.vs-indicator {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
    background: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 3px solid #667eea;
}

.analyze-btn {
    width: 100%;
    padding: 18px 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.analyze-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.analyze-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-loader {
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-loader::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

.results-section {
    border-top: 2px solid #eee;
    padding-top: 40px;
}

.results-section h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.result-item {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.result-item h3 {
    color: #333;
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.result-description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.result-canvas-container {
    position: relative;
}

.result-canvas-container canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 15px;
}

.download-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: #218838;
    transform: translateY(-1px);
}

.stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

@media (max-width: 768px) {
    .upload-group {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .vs-indicator {
        justify-self: center;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .container {
        padding: 20px;
    }
}