.controls {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    background-color: #f8f8f8;
    border-radius: 5px;
    text-align: center;
}
/* Canvas styling */
#landmarkCanvas {
    width: 100%; /* Take full width of container */
    height: 550px; /* Fixed height */
    border: 1px solid #ccc;
    margin: 0 auto; /* Center canvas if container is wider */
    cursor: crosshair; /* Default cursor */
    background-color: #f0f0f0; /* Light grey background */
    display: block; /* Prevent extra space below */
}
/* Control buttons styling */
.controls button,
.controls input[type="file"] {
    margin: 5px;
    padding: 8px 12px;
    font-size: 0.9rem;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #eee;
}
.controls button:hover {
    background-color: #ddd;
}
.controls button.active {
    background-color: #a0a0a0;
    font-weight: bold;
    color: white;
    border-color: #888;
}
#imageInput {
     display: block;
     margin: 10px auto;
}
#dragStatus, #removeStatus {
    font-weight: bold;
    display: inline-block;
    min-width: 25px; /* Prevent layout shift */
}
.upload-area {
    width: 100%;
    border: 2px dashed #007bff;
    border-radius: 12px;
    padding: 2.5rem;
    margin: 1rem 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    background: rgba(0, 123, 255, 0.05);
    border-color: #0056b3;
}