body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    margin: 0;
    padding: 0;
}

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

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

.input-section {
    margin-bottom: 30px;
    text-align: center;
}

#textInput {
    width: 100%;
    height: 150px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    margin-bottom: 15px;
    resize: vertical;
}

#analyzeBtn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#analyzeBtn:hover {
    background-color: #2980b9;
}

.results-section {
    background-color: white;
    border-radius: 5px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.metrics {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.metric-card {
    background-color: #f8f9fa;
    border-radius: 5px;
    padding: 20px;
    flex: 1;
    min-width: 200px;
    margin: 10px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.metric-card h3 {
    margin-top: 0;
    color: #2c3e50;
}

.metric-value {
    font-size: 24px;
    font-weight: bold;
    color: #3498db;
}

.chart-container {
    margin: 30px 0;
    height: 300px;
}

.keyword-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #3498db;
    color: white;
}

tr:hover {
    background-color: #f5f5f5;
}

@media (max-width: 768px) {
    .metrics {
        flex-direction: column;
    }
    
    .metric-card {
        margin: 10px 0;
    }
}