body {
    font-family: Arial, sans-serif;
    background-color: #f4f7f9;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #007bff;
    color: white;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
    margin: 0 0 5px 0;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 900px) {
    .container {
        grid-template-columns: 1fr 2fr;
    }
}

.card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* Submission Form Styling */
#submission-form {
    display: flex;
    flex-direction: column;
}

#noiseForm label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
}

#noiseForm input[type="text"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.measurement-area {
    margin: 20px 0;
    text-align: center;
}

#startMeasureButton {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s;
    width: 100%;
}

#startMeasureButton:hover:not(:disabled) {
    background-color: #1e7e34;
}

#statusMessage {
    margin-top: 10px;
    font-size: 0.9em;
    color: #007bff;
}

.result-area {
    padding: 15px;
    border: 1px dashed #ccc;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}

#dBDisplay {
    font-size: 2em;
    font-weight: bold;
    color: #dc3545;
}

#submitButton {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 15px 0;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1em;
    width: 100%;
    transition: opacity 0.3s;
}

#submitButton:disabled {
    background-color: #aaa;
    cursor: not-allowed;
}

/* Dashboard Styling */
.visualization-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
}


/* CRITICAL: Map height definition */
#map {
    height: 400px; /* This is the critical line! Must be > 0. */
    width: 100%;
    margin-top: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.chart-container {
    height: 350px;
}
/* ... (Keep all existing CSS) ... */

/* Add this to the end of your style.css */
.selected-coords {
    margin-top: 10px;
    font-size: 0.9em;
    color: #007bff;
    font-weight: bold;
}