:root {
        --background: #e7e7e7;
        --primary: #ffffff;
        --secondary: #f3f3f3;
        --accent: #000000;
        --accent-hover: #1b7eff;
        --accent-text: #ffffff;
        --text: #000000;
        --text-secondary: #595959;
        --border: #e7e7e7;
        --hover: #ececec;
        --font-family: 'IBM Plex Sans', sans-serif;
        --shadow: rgba(0, 0, 0, 0.1) 0px 4px 12px;
        --transition-speed: 0.25s;
    }

    #toolbar::-webkit-scrollbar,
    #pixelData::-webkit-scrollbar {
        width: 8px;
    }

    #toolbar::-webkit-scrollbar-track,
    #pixelData::-webkit-scrollbar-track {
        background: var(--color-scrollbar-bg);
        border-radius: 10px;
    }

    #toolbar::-webkit-scrollbar-thumb,
    #pixelData::-webkit-scrollbar-thumb {
        background: var(--color-scrollbar-thumb);
        border-radius: 10px;
    }

    #toolbar::-webkit-scrollbar-thumb:hover,
    #pixelData::-webkit-scrollbar-thumb:hover {
        background: var(--color-scrollbar-thumb-hover);
    }

    #toolbar {
        scrollbar-width: thin;
        scrollbar-color: var(--color-scrollbar-thumb) var(--color-scrollbar-bg);
    }

    #pixelData {
        scrollbar-width: thin;
        scrollbar-color: var(--color-scrollbar-thumb) var(--color-scrollbar-bg);
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: var(--font-family), Arial, sans-serif;
        height: 100vh;
        overflow: hidden;
        background: var(--background);
        color: var(--text);
    }

    #linePreview {
        position: absolute;
        height: 1px;
        background-color: black;
        pointer-events: none;
        display: none;
    }

    #cursor {
        position: absolute;
        box-sizing: border-box;
        top: 0;
        left: 0;
        pointer-events: none;
        background-color: #168dee;
    }

    body {
        display: flex;
        height: 100vh;
        margin: 0;
        font-family: var(--font-family);
        background-color: var(--color-background);
    }

    #toolbar {
        width: 280px;
        padding: 10px;
        background-color: var(--secondary);
        display: flex;
        flex-direction: column;
        overflow-y: auto;
        border-right: thin solid var(--border);
    }

    #toolbar.tools {
        width: 70px;
        padding: 5px;
    }

    .tools input[type="number"].pixelSize {
        width: 55px;
        margin-bottom: 10px;
        margin-top: 5px;
        border-radius: 8px;
        padding: 5px;
        border: 2px solid var(--accent);
        font-family: var(--font-family);
        font-size: 15px;
    }

    .tools input[type="number"].pixelSize:focus {
        outline: none;
    }

    #canvas-container {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
        background-color: var(--background);
        overflow: hidden;
        position: relative;
    }

    #canvas {
        cursor: crosshair;
        box-shadow: rgb(0, 0, 0) 0px 0px 0px 0.2px;
        image-rendering: pixelated;
        opacity: 1;
    }

    #overlay {
        position: absolute;
        top: 0;
        left: 0;
        pointer-events: none;
    }

    #referenceOverlay {
        position: absolute;
        top: 0;
        left: 0;
        pointer-events: none;
        background-size: contain;
        background-repeat: no-repeat;
        background-position: center;
        opacity: 1;
        background-color: white;
    }

    #canvas-container {
        position: relative;
        overflow: hidden;
        width: 100%;
        height: 100%;
    }

    #canvas,
    #overlay,
    #referenceOverlay {
        position: absolute;
        top: 0;
        left: 0;
    }

    #cursor,
    #linePreview {
        position: absolute;
        pointer-events: none;
    }



    .toolbar {
        width: 200px;
        background: var(--secondary);
        padding: 10px;
        border-right: thin solid var(--border);
    }

    .toolbar h2 {
        margin-bottom: 10px;
        color: var(--accent);
        font-size: 1.1rem;
        font-weight: 400;
        font-style: normal;
    }

    .tools {
        width: 70px;
        padding: 5px;
        border-left: 1px solid var(--border);
        background: var(--secondary);
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .settings-container {
        overflow: hidden;
        transition: max-height 0.1s ease-in-out, padding 0.1s ease-in-out;
        max-height: 500px;
        padding: 10px;
        background-color: var(--primary);
        border-radius: 11px;
        margin-bottom: 10px;
        padding-bottom: 0;
        display: flex;
        flex-shrink: 0;
        flex-direction: column;
        gap: 5px;
        /* border: thin solid var(--border); */
    }

    .settings-container.collapsed {
        max-height: 40px;
        /* Ensures header stays visible */
        padding-bottom: 0;
        /* Remove inner padding when collapsed */
    }

    .settings-container h2 {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 10px;
        font-size: 1rem;
        cursor: pointer;
        font-weight: 500;
    }

    .settings-container h2 i {
        transition: transform 0.0s ease-in-out;
        color: var(--text-secondary)
    }

    .settings-container.collapsed h2 i {
        transform: rotate(-180deg);
    }

    .settings-container button {
        border-radius: 30px;
    }

    .input-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 5px;
    }

    .input-container label {
        font-size: 0.9rem;
        color: var(--text-secondary);
        flex: 1;
    }

    .input-container input {
        width: 60px;
        padding: 5px;
        border: 1px solid var(--border);
        transition: border-color var(--transition-speed);
    }

    .input-container input:focus {
        border-color: var(--accent-hover);
        outline: none;
    }

    button {
        width: 100%;
        padding: 7px 7px;
        margin-bottom: 10px;
        background: var(--accent);
        color: var(--accent-text);
        border: none;
        border-radius: 30px;
        cursor: pointer;
        transition: background var(--transition-speed);
        font-family: var(--font-family);
    }

    button:hover {
        background: var(--accent-hover);
    }

    .tools button {
        aspect-ratio: 1/1;
        font-size: 21px;
        padding: 0px;
    }

    .tools button.active {
        background: var(--accent-hover);

    }

    #toggleExpandButton,
    #download2,
    #download,
    #toggleOverlayImage {
        width: 70px;
        background-color: var(--primary);
        color: var(--text);
        border: 2px solid var(--accent);
    }

    #toggleOverlayImage {
        height: 34px;
        position: relative;
    }

    #toggleOverlayImage::before {
        content: '';
        position: absolute;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background-color: var(--text);
        top: 6px;
        left: 7px;
        transition: transform 0.3s;
    }

    #toggleOverlayImage.active::before {
        transform: translateX(22px);
    }

    #toggleOverlayImage:hover::before {
        background-color: var(--accent-text);
    }

    #toggleExpandButton.active {
        background-color: var(--accent-hover);
        color: var(--accent-text);
        border: 2px solid var(--accent-hover);
    }

    #toggleExpandButton:hover,
    #download2:hover,
    #download:hover,
    #toggleOverlayImage:hover {
        background-color: var(--accent);
        color: var(--accent-text);
    }

    #clearCanvasButton {
        margin-top: auto;
    }

    #clearCanvasButton:hover {
        background-color: #ff2727;
    }

    #copyButton {
        max-width: 90px
    }

    #undoButton,
    #redoButton {
        width: 50px;
        background-color: var(--primary);
        color: var(--text);
        border: 2px solid var(--accent);
    }

    #undoButton:hover,
    #redoButton:hover {
        background-color: var(--accent-hover);
        color: var(--accent-text);
        border: 2px solid var(--accent-hover)
    }

    #colorPalette {
        display: flex;
        flex-wrap: wrap;
        gap: 5px;
        justify-content: center;
        margin-top: 10px;
        margin-bottom: 15px;
    }

    .color-box {
        border: thin solid transparent;
        width: 26px;
        height: 26px;
        cursor: pointer;
        transition: transform var(--transition-speed);
        font-family: var(--font-family);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        text-align: center;
        box-shadow: var(--shadow);
        color: var(--text);
        border-radius: 6px;
    }

    .color-box span {
        border-radius: 2px;
        font-size: 0.8rem;
        aspect-ratio: 1/1;
        width: 20px;
        text-align: center;
        max-height: 20px;
        padding-top: 2px;
    }

    .color-box[data-active="true"] span {
        outline: 2px solid var(--accent);
        outline-offset: 4px;
    }

    hex-color-picker::part(hue) {
        height: 14px;
    }

    hex-color-picker::part(hue-pointer),
    hex-color-picker::part(saturation-pointer) {
        width: 15px;
        height: 15px;
    }

    #colorPicker {
        width: 100%;
        margin-bottom: 0px;
        max-height: 130px;
    }


    #pixelData {
        height: 40px;
        min-height: 50px;
        width: 240px;
        resize: vertical;
        word-wrap: break-word;
        overflow-wrap: break-word;
        white-space: pre;
        font-size: var(--font-size-small);
        font-family: monospace;
        line-height: 0.8;
        letter-spacing: 3px;
        border-radius: 4px;
        border: 2px solid var(--accent);
        overflow-y: auto;
        padding: 3px;
        margin-bottom: 10px;
        background-color: var(--primary);
        color: var(--text);
    }

    #pixelData:focus {
        outline: none;
        border: 2px solid var(--accent-hover);

    }

    #pixelData.expanded {
        position: absolute;
        bottom: 0px;
        left: 280px;
        z-index: 10000000;
        height: 50%;
        min-height: 50px;
        width: calc(100% - 350px);
    }