body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    overflow-x: hidden;
}

/* Mobile-first: base styles for small screens */
#sidebar-container {
    padding: 0;
}

.sidebar {
    width: 100%;
    max-width: 100%;
    padding: 15px;
    margin: 0;
    border-right: none;
    border-bottom: 1px solid #ddd;
    background-color: #f9f9f9;
    color: #505050;
}

#hx { color: #505050; }

/* Tablet and up */
@media (min-width: 768px) {
    #sidebar-container {
        padding: 0 0 0 5px;
    }
    
    .sidebar {
        max-width: 280px;
        padding: 12px;
        margin: 5px 0 0 10px;
        border-right: 1px solid #ddd;
        border-bottom: none;
    }
}

/* Desktop */
@media (min-width: 1200px) {
    .sidebar {
        padding: 15px;
    }
}

@media (min-width: 768px) and (max-width: 1366px) {
    .sidebar {
        padding: 8px;
    }
    
    .sidebar h5 {
        font-size: 14px;
        margin-bottom: 6px;
    }
}

.main-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    color: #333;
    margin-bottom: 20px;
    font-size: 24px;
}

/* Mobile-first control groups */
.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    color: #555;
    font-size: 15px;
}

.coordinate-display {
    font-size: 15px;
    color: #222;
    margin-top: 8px;
    padding: 12px;
    background-color: #fff;
    border-radius: 6px;
    border: 1px solid #ddd;
    line-height: 1.6;
}

/* Tablet adjustments */
@media (min-width: 768px) {
    .control-group {
        margin-bottom: 12px;
    }
    
    .control-group label {
        margin-bottom: 5px;
        font-size: 13px;
    }
    
    .coordinate-display {
        font-size: 14px;
        margin-top: 5px;
        padding: 8px;
    }
}

@media (min-width: 768px) and (max-width: 1366px) {
    .control-group {
        margin-bottom: 10px;
    }
    
    .control-group label {
        font-size: 12px;
        margin-bottom: 4px;
    }
}

.date-inputs {
    display: flex;
    gap: 5px;
}

.location-inputs {
    display: flex;
    gap: 5px;
}

.location-inputs input {
    flex: 1;
}

/* Mobile-first: larger touch targets */
select, input[type="number"], input[type="text"], input[type="date"] {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    width: 100%;
    box-sizing: border-box;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.date-inputs select {
    flex: 1;
    font-size: 16px;
    padding: 10px 30px 10px 10px;
    background-image: url('data:image/svg+xml;charset=UTF-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12"%3E%3Cpath fill="%23333" d="M6 9L1 4h10z"/%3E%3C/svg%3E');
    background-repeat: no-repeat;
    background-position: right 8px center;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.button-group .btn {
    flex: 1;
    min-height: 44px;
    font-size: 16px;
}

/* Tablet adjustments */
@media (min-width: 768px) {
    select, input[type="number"], input[type="text"], input[type="date"] {
        padding: 8px;
        font-size: 14px;
    }
    
    .date-inputs select {
        font-size: 14px;
        padding: 8px 26px 8px 8px;
    }
    
    .button-group {
        gap: 8px;
        margin-bottom: 12px;
    }
    
    .button-group .btn {
        min-height: auto;
        font-size: 14px;
    }
}

@media (min-width: 768px) and (max-width: 1366px) {
    select, input[type="number"] {
        padding: 5px;
        font-size: 13px;
    }
    
    .date-inputs select {
        font-size: 13px;
        padding: 4px 22px 4px 4px;
    }
    
    #monthSelect, #daySelect {
        padding: 4px 22px 4px 4px;
    }
    
    button {
        padding: 6px;
        font-size: 12px;
    }
    
    .button-group {
        gap: 6px;
        margin-bottom: 10px;
    }
}

.visibility-controls {
    margin-top: 12px;
}

.visibility-controls h3 {
    font-size: 14px;
    margin-bottom: 8px;
    color: #333;
}

.visibility-controls h5 {
    font-size: 14px;
    margin-bottom: 8px;
    color: #333;
}

/* Mobile-first: larger checkboxes for touch */
.checkbox-item {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    min-height: 44px;
}

.checkbox-item input[type="checkbox"] {
    margin-right: 10px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-item label {
    font-size: 15px;
    font-weight: normal;
    margin: 0;
    cursor: pointer;
    line-height: 1.3;
    -webkit-tap-highlight-color: transparent;
}

/* Tablet adjustments */
@media (min-width: 768px) {
    .checkbox-item {
        margin-bottom: 6px;
        min-height: auto;
    }
    
    .checkbox-item input[type="checkbox"] {
        margin-right: 6px;
        width: 16px;
        height: 16px;
    }
    
    .checkbox-item label {
        font-size: 13px;
    }
}

@media (min-width: 768px) and (max-width: 1366px) {
    .visibility-controls {
        margin-top: 10px;
    }
    
    .visibility-controls h5 {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .checkbox-item {
        margin-bottom: 4px;
    }
    
    .checkbox-item input[type="checkbox"] {
        margin-right: 5px;
        width: 14px;
        height: 14px;
    }
    
    .checkbox-item label {
        font-size: 12px;
    }
}

#plotImage {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Mobile-first chart sizing */
.dso_chart {
    width: 100%;
    min-height: 300px;
    height: 50vh;
    margin: 10px 0 0 0;
}

.visibility-controls .row {
    margin-left: 0;
    margin-right: 0;
}

.visibility-controls .col-6 {
    padding-left: 8px;
    padding-right: 8px;
}

/* Tablet */
@media (min-width: 768px) {
    .dso_chart {
        min-height: 450px;
        height: 80vh;
        margin: 5px 0 0 0;
    }
    
    .visibility-controls .col-6 {
        padding-left: 5px;
        padding-right: 5px;
    }
}

/* Desktop */
@media (min-width: 1200px) {
    .dso_chart {
        min-height: 500px;
        height: 90vh;
    }
}

/* Action buttons - mobile first */
.btn-sm, .btn {
    padding: 12px 16px;
    font-size: 16px;
    min-height: 44px;
    border-radius: 6px;
    font-weight: 500;
}

@media (min-width: 768px) {
    .btn-sm, .btn {
        padding: 8px 12px;
        font-size: 14px;
        min-height: auto;
        border-radius: 4px;
    }
}

.loading {
    text-align: center;
    padding: 40px;
    font-size: 18px;
    color: #666;
}

.error {
    color: #d32f2f;
    padding: 10px;
    background-color: #ffebee;
    border-radius: 4px;
    margin: 10px 0;
}


@media (min-width: 768px) and (max-width: 1366px) {
    #btnUpdatePlot, #btnSaveChart, #btnSaveSettings {
        margin-bottom: 6px;
        font-size: 12px;
        padding: 6px;
    }
}
#plotImage, #loadingMessage, #errorMessage {
    display: none;
}