:root {
    /* Light Mode Colors */
    --background-color: #f0f0f0;
    --text-color: #333;
    --container-background: #fff;
    --container-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --border-color: #ccc;
    --canvas-background: #000; /* Fractal background is typically black */
    --edge-color: #aaa;
    --slider-value-bg: #f9f9f9;
    --slider-value-border: #eee;
    --heading-color: #555;
    --button-bg: #e0e0e0;
    --button-hover-bg: #d0d0d0;
}

body.dark-mode {
    /* Dark Mode Colors */
    --background-color: #222;
    --text-color: #eee;
    --container-background: #333;
    --container-shadow: 0 4px 8px rgba(0,0,0,0.3);
    --border-color: #555;
    --canvas-background: #000; /* Fractal background is typically black */
    --edge-color: #666;
    --slider-value-bg: #2a2a2a;
    --slider-value-border: #444;
    --heading-color: #bbb;
    --button-bg: #444;
    --button-hover-bg: #555;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

#mainContainer {
    display: flex;
    flex-direction: row;
    padding: 10px;
    gap: 10px;
    width: 100%;
    box-sizing: border-box;
}

#controlsColumn {
    width: 300px;
    flex-shrink: 0;
    position: relative;
}

#controlsContainer {
    padding: 10px;
    background-color: var(--container-background);
    border-radius: 8px;
    box-shadow: var(--container-shadow);
    width: 100%;
    box-sizing: border-box;
    transition: background-color 0.3s, box-shadow 0.3s;
}

#sliceViewsContainer {
    display: flex;
    gap: 10px;
    flex-basis: 20%;
    flex-grow: 1;
    align-items: center;
    flex-wrap: wrap;
    flex-direction: row;
    justify-content: flex-end;
    align-content: flex-start;
}

@media (min-width: 1180px) { 
    #sliceViewsContainer {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, auto);
        gap: 10px;
        flex-grow: 1;
        min-width: 0;
        align-items: start;
        align-content: start;
    }
}

.slice-view {
    background-color: var(--container-background);
    border-radius: 8px;
    padding: 8px 5px 5px 5px;
    box-shadow: var(--container-shadow);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background-color 0.3s, box-shadow 0.3s;
    min-height: 0;
}

.slice-view.dragging {
    cursor: grabbing;
    opacity: 0.8;
    z-index: 10;
}

.slice-view h3 {
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--heading-color);
    transition: color 0.3s;
    font-size: 1.1em;
    cursor: grab;
    user-select: none;
}

.slice-view.dragging h3 {
    cursor: grabbing;
}

.rotation-slider-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9em;
}

.slider-label {
    margin-right: 5px;
    white-space: nowrap;
}

.rotation-slider {
    flex-grow: 1;
    margin: 0 5px;
    min-width: 80px;
    /* Basic styling to make it visible */
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    opacity: 0.7;
    transition: opacity .2s;
}

.rotation-slider:hover {
    opacity: 1;
}

.rotation-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    background: var(--heading-color); /* Use a contrasting color */
    border-radius: 50%;
    cursor: pointer;
}

.rotation-slider::-moz-range-thumb {
    width: 15px;
    height: 15px;
    background: var(--heading-color); /* Use a contrasting color */
    border-radius: 50%;
    cursor: pointer;
}

.slider-value-display {
    min-width: 35px;
    text-align: right;
    font-family: monospace;
    font-size: 0.95em;
    background-color: var(--slider-value-bg);
    padding: 2px 4px;
    border-radius: 3px;
    border: 1px solid var(--slider-value-border);
    transition: background-color 0.3s, border-color 0.3s;
}

canvas {
    border: 1px solid var(--border-color);
    background-color: var(--canvas-background); /* Set canvas background via CSS variable */
    max-width: 100%;
    display: block;
    transition: border-color 0.3s, background-color 0.3s;
    cursor: zoom-in;
    touch-action: none;
}

.lil-gui.root {
    position: sticky;
    top: 20px;
    margin-bottom: 0;
    width: 100% !important;
    box-sizing: border-box;
}

/* lil-gui Dark Mode adjustments */
body.dark-mode .lil-gui {
    --background-color: var(--container-background);
    --text-color: var(--text-color);
    --title-background-color: #444;
    --title-text-color: var(--text-color);
    --widget-color: #555;
    --hover-color: #666;
    --focus-color: #666;
    --active-color: #777;
    --slider-color: #666;
    --slider-active-color: #777;
}


#explanationContainer {
    margin: 0px 10px 10px 10px;
    padding: 10px;
    background-color: var(--container-background);
    border-radius: 8px;
    box-shadow: var(--container-shadow);
    line-height: 1.6;
    box-sizing: border-box;
    transition: background-color 0.3s, box-shadow 0.3s;
}

#explanationContainer h2,
#explanationContainer h3 {
    margin-top: 0;
    color: var(--heading-color);
    transition: color 0.3s;
}

#explanationContainer p {
    margin-bottom: 1em;
    text-align: justify;
}

#explanationContainer ul {
    padding-left: 20px;
    margin-bottom: 1em;
}

#explanationContainer li {
    margin-bottom: 0.5em;
}

/* Modal Styles */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1000; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.6); /* Black w/ opacity */
    backdrop-filter: blur(3px);
}

.modal-content {
    background-color: var(--container-background);
    color: var(--text-color);
    margin: 10% auto; /* 10% from the top and centered */
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 80%; /* Could be more or less, depending on screen size */
    max-width: 600px; /* Maximum width */
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    position: relative;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.modal-content h3 {
    color: var(--heading-color);
    margin-top: 0;
}
.modal-content p {
    margin-bottom: 10px;
}
.modal-content pre {
    background-color: var(--slider-value-bg);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.9em;
    margin-bottom: 15px;
    transition: background-color 0.3s, border-color 0.3s;
}
.modal-content code {
    font-family: monospace;
    word-break: break-all;
}

.close-button {
    color: var(--heading-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    transition: color 0.2s;
}

.close-button:hover,
.close-button:focus {
    color: var(--text-color);
    text-decoration: none;
    cursor: pointer;
}

#jsonImportTextarea {
    width: calc(100% - 20px); /* Full width minus padding */
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--slider-value-bg); /* Consistent with other inputs */
    color: var(--text-color);
    font-family: monospace;
    min-height: 100px;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.modal-content button {
    background-color: var(--button-bg);
    color: var(--text-color);
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s;
}

.modal-content button:hover {
    background-color: var(--button-hover-bg);
}