body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f5f5f5;
}

.login-container, .dashboard, .stats-container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 1200px;
    width: 90%;
    margin: 2rem auto;
}

.button-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.login-button, .logout-button, .action-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #0078d4;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 1rem;
}

.action-button {
    background-color: #107c10;
}

.login-button:hover, .logout-button:hover, .action-button:hover {
    background-color: #006cbd;
}

.action-button:hover {
    background-color: #0b5a0b;
}

.stats-summary {
    margin: 2rem 0;
}

.stats-table {
    margin: 2rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    padding: 0.5rem;
    border: 1px solid #ddd;
}

th {
    background-color: #f0f0f0;
}

tr:nth-child(even) {
    background-color: #f8f8f8;
}

.stats-plot {
    margin: 2rem 0;
}

.stats-plot img {
    max-width: 100%;
    height: auto;
}

.error-message {
    color: #d83b01;
    background-color: #fde7e9;
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.navigation {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    text-align: left;
}

.form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
}

.form-group select:focus {
    outline: none;
    border-color: #0078d4;
    box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.2);
}

.stats-plot {
    margin: 2rem 0;
}

.caveats-section {
    background-color: #fff8e6;
    border-left: 4px solid #ffd700;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
}

.caveats-section:empty {
    display: none;
}