* {
    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: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

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

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.2em;
    opacity: 0.9;
}

.upload-section {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.input-group input[type="file"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.input-group input[type="file"]:focus {
    outline: none;
    border-color: #667eea;
}

.input-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 14px;
}



#submitBtn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#submitBtn:hover {
    transform: translateY(-2px);
}

#submitBtn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #ffffff40;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.results-section,
.error-section {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 20px;
}

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

.ensemble-result {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.ensemble-result h3 {
    margin-bottom: 20px;
    font-size: 1.5em;
}

.individual-results h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.3em;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.model-result {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.model-result h4 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.1em;
}

.prediction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.prediction-item:last-child {
    border-bottom: none;
}

.exercise-name {
    font-weight: 500;
    color: #333;
}

.probability {
    font-weight: 600;
    color: #667eea;
}

.probability-bar {
    width: 100%;
    height: 6px;
    background: #eee;
    border-radius: 3px;
    margin-top: 5px;
    overflow: hidden;
}

.probability-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.5s ease;
}

.processing-time {
    margin-top: 10px;
    text-align: right;
}

.processing-time small {
    color: #666;
}

.processing-summary {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #28a745;
}

.processing-summary h3 {
    margin-bottom: 15px;
    color: #333;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background: white;
    border-radius: 6px;
}

.summary-item label {
    font-weight: 500;
    color: #555;
}

.summary-item span {
    font-weight: 600;
    color: #28a745;
}

.error-section {
    background: #fee;
    border-left: 4px solid #dc3545;
}

.error-section h3 {
    color: #dc3545;
    margin-bottom: 10px;
}

.error-section p {
    color: #721c24;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2em;
    }
    
    .upload-section {
        padding: 20px;
    }
    
    .model-grid {
        grid-template-columns: 1fr;
    }
}