/* Add this rule at the top if not already present */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    line-height: 1.6;
    margin: 20px;
    background-color: #f4f4f4;
    color: #333;
}

/* Hide initial elements */
body > h1, body > p:first-of-type {
    display: none;
}

/* Hide all H2 */
h2 {
    display: none;
}

p { /* Default paragraph styles */
    font-size: 0.9em;
    color: #555;
    min-height: 1.2em;
    text-align: center;
    margin-bottom: 10px; /* Consistent bottom margin */
}

/* --- Main Layout --- */
.main-content-wrapper {
    display: flex;
    flex-wrap: wrap; /* Allow controls to wrap below canvas on very narrow screens */
    gap: 30px; /* Space between canvas area and controls area */
    margin-bottom: 30px; /* Add space below the main content */
}

/* --- Left Column: Canvas Area --- */
.canvas-area {
    flex: 2; /* Allow canvas area to take more space */
    min-width: 300px; /* Minimum width for at least one canvas */
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start; /* Align canvases to the start */
    align-items: flex-start;
    gap: 20px; /* Space between canvas wrappers */
}

/* --- Right Column: Controls Area --- */
.controls-area {
    flex: 1; /* Allow controls to take available space */
    max-width: 400px; /* Minimum width for controls */
    display: flex;
    flex-direction: column;
    gap: 10px; /* Space between control blocks */
}

/* --- Canvas Wrappers (General) --- */
.canvas-container {
    /* These act as sub-groupings within canvas-area */
    display: flex;
    flex-direction:row;
    gap: 20px;
    justify-content: flex-start;
}
.monitor-area-wrapper{
    /* These act as sub-groupings within canvas-area */
    display: flex;
    flex-direction:row;
    gap: 20px;
    justify-content: flex-start;
}

.monitor-wrapper, .canvas-wrapper {
    /* Individual canvas block */
    max-width: 100px; /* Prevent growing larger than canvas */
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Hide Canvas Status Paragraphs */
#monitorStatus, #monitorStatus2,
#p3Status, #overlayStatus, #angleScaleStatus, #positionStatus {
    display: none;
}

/* --- Specific Canvas Styles --- */
canvas { /* Default canvas border */
    border: 1px solid #ccc;
    display: block;
    background-color: #fff; /* Default, overridden for paintCanvas */
    max-width: 100%;
    height: auto;
}

#monitorCanvas, #monitorCanvas2 {
    border: 2px solid #333;
    width: 100px;
    height: 100px;
    background-color: #eee;
    margin: 0 auto; /* Center within wrapper */
}

/* P3 / Overlay / Position Stack Container */
.p3-canvas-relative-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto; /* Center within wrapper */
    flex-shrink: 0;
    display:flex;
    flex-wrap:wrap;
    flex-direction:column;
}

#p3Canvas {
    /* Base layer */
    position: static; /* Part of normal flow within relative container */
    width: 100px;
    height: 100px;
    border: 1px solid #ccc;
    margin: 0;
}

#positionCanvas {
    /* Interactive layer - OVER P3, UNDER Shape Overlay */
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
    cursor: crosshair;
    background-color: transparent; /* See through to P3 */
    border: none; /* No border */
    z-index: 5; /* Above P3 */
    pointer-events: auto; /* Allow interaction */
    margin: 0;
}

#overlayCanvas {
    /* Shape overlay layer - TOPMOST */
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
    border: none;
    background-color: transparent;
    pointer-events: none; /* No interaction */
    z-index: 10; /* Above Position */
    margin: 0;
}

#angleScaleCanvas {
   /* Standalone interactive canvas */
   cursor: crosshair;
   background-color: #e9e9e9;
   border: 1px dashed #999;
   width: 100px;
   height: 100px;
   margin: 0 auto; /* Center within wrapper */
}


/* --- Controls Area Styling --- */
.render-button-container {
    text-align: center;
    width: 100%; /* Take full width */
    margin-bottom: 0px; /* Add some space below button */
}

#renderButton {
    width:100%;
    padding: 6px 12px;
    font-size: 1.1em;
    font-weight: bold;
    color: #fff;
    background-color: #28a745; /* Green */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}
#renderButton:hover:not(:disabled) { background-color: #218838; }
#renderButton:disabled { background-color: #ccc; cursor: not-allowed; }

.form-container, .permission-area {
    width: 100%; /* Make control blocks take full width of right column */
    max-width: none; /* Override previous max-width */
    background-color: transparent;
}

.paint-controls-container {
    margin-top: 0px; /* Add some space above paint controls */
}


.form-container h2, .permission-area h2 { /* Still hidden by global h2 rule */
    margin-top: 0;
    margin-bottom: 15px;
    text-align: center;
    font-size: 1.1em;
}

#shapeForm, #angleScaleForm, #positionForm, #samplingForm, #paintControlsForm {
    display: flex;
    flex-direction: column;
}

#shapeForm fieldset, #samplingForm fieldset, #paintControlsForm fieldset {
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 10px 15px 15px 15px;
    /* margin: 0 0 10px 0; */
    border: none;
    padding: 0;
    text-align: center;
}

/* Style inline fieldsets for radio groups */
.inline-fieldset {
    border: none; /* Remove outer border */
    padding: 5px 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 5px; /* Space between radio buttons */
    align-items: center;
}
.inline-fieldset legend {
    font-weight: bold;
    padding: 0 5px 0 0; /* Adjust padding */
    font-size: 0.9em;
    margin-right: 10px; /* Space after legend */
    flex-shrink: 0;
}
.inline-fieldset label {
    margin-bottom: 0; /* Remove bottom margin */
    display: inline-flex; /* Align items nicely */
    align-items: center;
}


#shapeForm legend, #samplingForm legend, #paintControlsForm fieldset > legend { /* Target direct fieldset legends */
    font-weight: bold;
    padding: 0 5px;
    font-size: 0.95em;
}

#shapeForm label, #samplingForm label, #paintControlsForm label {
    margin-bottom: 5px;
    cursor: pointer;
    font-size: 0.95em;
}
#shapeForm input[type="radio"], #samplingForm input[type="radio"], #paintControlsForm input[type="radio"] {
    margin-right: 6px;
    vertical-align: middle;
}
#paintControlsForm input[type="number"] {
    width: 70px; /* Adjust width for number inputs */
    padding: 4px 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
#paintControlsForm button[type="button"] {
    padding: 6px 12px;
    font-size: 0.9em;
    cursor: pointer;
    margin-top: 5px;
}
.checkbox-label { /* Style checkbox label */
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9em;
}
.button-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 10px;
}


.form-group {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 10px;
}

.form-group label {
    flex-basis: 100px; /* Slightly less basis for label */
    text-align: right;
    font-weight: bold;
    font-size: 0.9em;
    flex-shrink: 0;
}

.form-group input[type="range"] {
    flex-grow: 1;
    min-width: 80px;
    cursor: pointer;
}

.form-group span {
display:none;
    flex-basis: 70px; /* Slightly less basis for span */
    text-align: right;
    font-family: monospace;
    background-color: #eee;
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    flex-shrink: 0;
}

.form-hint {
    display:none;
    font-size: 0.8em;
    color: #666;
    text-align: center;
    margin-top: 5px;
    font-style: italic;
}

/* Permission Area Specific */
.permission-area {
    text-align: center;
}
#permissionButton {
    padding: 8px 15px;
    font-size: 0.95em;
    color: #fff;
    background-color: #007bff; /* Blue */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-bottom: 10px; /* Space below button */
}
#permissionButton:hover:not(:disabled) { background-color: #0056b3; }
#permissionButton:disabled { background-color: #ccc; cursor: not-allowed; }

#permissionStatus {
    display: block; /* Make status take its own line */
    font-style: italic;
    font-weight: bold;
    min-height: 0;
    margin-bottom: 5px;
}

/* --- Paint Area Styles --- */
.paint-area-wrapper {
    width: 50%;
    margin-top: 30px; /* Space above the paint area */
    padding: 15px;
    background-color: #e0e0e0; /* Light gray background for the wrapper */
    border: 1px solid #bbb;
    border-radius: 8px;
}

.paint-canvas-stack-container {
    position: relative;
    width: 100%; /* Take full width of wrapper */
    /* Height will be determined by the canvases inside */
    margin: 0 auto;
    border: 1px solid #999; /* Border around the stack */
    overflow: hidden; /* Hide potential overflow if canvases mismatch slightly */
}

#paintBackgroundCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%; /* Display size matches container */
    height: 100%; /* Display size matches container */
    z-index: 1; /* Behind paint canvas */
    border: none; /* Remove default border */
    background-color: transparent; /* Should be filled by JS */
}

#paintCanvas {
    position: relative; /* Needed for z-index stacking */
    z-index: 5; /* Above background */
    width: 100%; /* Display size matches container */
    height: auto; /* Maintain aspect ratio */
    display: block;
    border: none; /* Remove default border */
    background-color: transparent; /* IMPORTANT: Make paint layer transparent */
    cursor: crosshair;
    touch-action: none;
}


#paintStatus {
    display: block; /* Ensure it's visible */
    text-align: center;
    margin-top: 10px; /* Space above the status */
    font-style: italic;
    color: #444;
}