body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
    border-radius: 0 0 10px 10px;
}

.section {
    background-color: white;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.graph-container {
    width: 100%;
    height: 400px;
    margin: 1.5rem 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.definition {
    background-color: #e9f7fe;
    border-left: 4px solid #2196F3;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 5px 5px 0;
}

.method {
    background-color: #f3e5f5;
    border-left: 4px solid #9C27B0;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 5px 5px 0;
}

.example {
    background-color: #fff8e1;
    border-left: 4px solid #FFC107;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0 5px 5px 0;
}

.table-container {
    overflow-x: auto;
    margin: 1.5rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.75rem;
    text-align: center;
    border: 1px solid #dee2e6;
}

th {
    background-color: #f8f9fa;
}

h2 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

h3 {
    color: #2980b9;
    margin-top: 1.5rem;
}

.nav-tabs .nav-link.active {
    background-color: #6a11cb;
    border-color: #6a11cb;
    color: white;
}

.nav-tabs .nav-link {
    color: #6a11cb;
    border-color: transparent;
}

.nav-tabs .nav-link:hover {
    border-color: #6a11cb;
    color: #6a11cb;
}

.interactive-controls {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.btn-generate {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    border: none;
    color: white;
    transition: all 0.3s ease;
}

.btn-generate:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(106, 17, 203, 0.3);
    color: white;
}

.data-display {
    background-color: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 1rem;
    margin: 1rem 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.tab-content {
    background-color: white;
    border-radius: 0 0 10px 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.nav-tabs {
    border-bottom: none;
}