:root {
        --primary-color: #2563eb;
        --border-color: #b0b0b0;
        --pimary-border-color: black; 
        --bg-hover: #f3f4f6;
    }
.final-answer{
	padding:20px;
}
    .toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    /* margin-bottom: 15px; */
    border: 2px solid var(--pimary-border-color);
    padding: 10px;
    border-radius: 5px;
    background-color: #ffffff;
    position: relative;
    z-index: 100;
    border-bottom: 0px;
    border-bottom-left-radius: 0px;
    border-bottom-right-radius: 0px;
    font-family: "League Spartan" !important;

    }
    .toolbar img{
        width: 25px;
        height: 23px;
    }

    .toolbar-group {
        display: flex;
        gap: 4px;
        /* padding: 0 2px; */
        /* border-right: 1px solid var(--border-color); */
        align-items: center;
    }

    .toolbar-group:last-child {
        border-right: none;
    }

    .toolbar button {
            background-color: white;
            border: 1px solid var(--border-color) !important;
            padding: 1px 1px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 4px;
            min-width: 32px;
            justify-content: center;
            font-weight: bold;
            height: 40px;
            color: black;
            margin : 0px;
            font-family: "League Spartan" !important;

        }

    button:hover {
        background-color: var(--bg-hover);
        border-color: #d1d5db;
    }

    .dropdown {
        position: relative;
        display: inline-block;
    }

    .dropdown-content {
        display: none;
        position: absolute;
        background-color: white;
        min-width: 400px;
        max-width: 600px;
        max-height: 80vh;
        overflow-y: auto;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        border-radius: 8px;
        z-index: 1000;
        padding: 8px;
        scrollbar-width: thin;
        scrollbar-color: var(--primary-color) transparent;
    }

    .dropdown-content::-webkit-scrollbar {
        width: 8px;
    }

    .dropdown-content::-webkit-scrollbar-track {
        background: transparent;
    }

    .dropdown-content::-webkit-scrollbar-thumb {
        background-color: var(--primary-color);
        border-radius: 4px;
    }

    .dropdown-section {
        padding: 8px;
        border-bottom: 1px solid var(--border-color);
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 4px;
    }

    .dropdown-section:last-child {
        border-bottom: none;
    }

    .dropdown-header {
        display: block;
        font-size: 0.9em;
        color: var(--text-muted);
        margin-bottom: 4px;
        font-weight: 500;
        grid-column: 1 / -1;
        background: #f8fafc;
        padding: 4px 8px;
        border-radius: 4px;
    }

    .dropdown-content button {
        padding: 6px 8px;
        margin: 2px;
        font-size: 0.95em;
        white-space: nowrap;
        text-overflow: ellipsis;
        overflow: hidden;
        border-radius: 4px;
        transition: all 0.2s ease;
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 4px;
    }

    .dropdown-content button:hover {
        background-color: var(--primary-color);
        color: white;
    }

    @keyframes dropdownFade {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .dropdown:hover .dropdown-content {
        display: block;
        animation: dropdownFade 0.2s ease;
    }

    .editor, #final-answer {
        border: 2px solid #000000;
        border-radius: 8px;
        padding: 20px;
        width: 100%;
        box-sizing: border-box;
        font-size: 1.2em;
        line-height: 1.6;
        background-color: white;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        position: relative;
        z-index: 1;
        /* margin: 0px; */
        /* border-top-left-radius: 0px;
        border-top-right-radius: 0px */
        border-radius: 0px;
    }

    .editor {
        min-height: 300px;
        font-family: "League Spartan" !important;

    }

    #final-answer {
        min-height: 100px;
        font-family: "League Spartan" !important;

        margin-top: 20px;
    }

    .editor:focus, #final-answer:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: -2px;
    }

    .math-container {
        display: inline-block;
        position: relative;
    }

    .input-container {
        display: inline-flex;
        align-items: baseline;
        user-select: none;
    }

    .power-base,
    .power-exponent,
    .subscript-base,
    .subscript-exponent {
        border: none;
        outline: none;
        background: transparent;
        padding: 0;
        margin: 0;
        font-size: inherit;
        font-family: inherit;
    }

    .fraction {
        display: inline-flex;
        flex-direction: column;
        vertical-align: middle;
        text-align: center;
    }

    .fraction-line {
        border-bottom: 1px solid black;
        margin: 2px 0;
        user-select: none;
    }

    .fraction-numerator-container,
    .fraction-denominator-container {
        min-width: 20px;
        min-height: 20px;
        padding: 2px;
    }

    /* Prevent text selection in non-editable areas */
    .math-container:not(input):not([contenteditable="true"]) {
        user-select: none;
    }

    /* Style for placeholder text */
    [data-placeholder]:empty:before {
        content: attr(data-placeholder);
        color: #999;
        font-style: italic;
    }

    .mixed-fraction {
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
    }

    .mixed-fraction-whole {
        width: 30px;
        text-align: center;
        margin-right: 4px;
        border: 2px dotted #e0e0e0 !important;
        border-radius: 3px;
        padding: 2px 4px;
        font-size: 14px;
        background: white;
    }

    .power {
        display: inline-flex;
        align-items: flex-start;
        margin: 0 2px;
        position: relative;
    }

    .power-base,
    .power-exponent,
    .subscript-base,
    .subscript-exponent {
        text-align: center;
        border: 2px dotted #e0e0e0 !important;
        border-radius: 3px;
        padding: 2px 4px;
        background: white;
        transition: width 0.2s ease;
    }

    .power-base,
    .subscript-base {
        font-size: 14px;
        size: 1;
    }

    .power-exponent,
    .subscript-exponent {
        font-size: 12px;
        size: 1;
    }

    .power-exponent {
        position: relative;
        top: -8px;
        margin-left: 1px;
    }

    .subscript-exponent {
        position: relative;
        bottom: -4px;
        margin-left: 1px;
    }

    .power-base::placeholder,
    .power-exponent::placeholder,
    .subscript-base::placeholder,
    .subscript-exponent::placeholder {
        color: #999;
        opacity: 1;
    }

    .subscript {
        display: inline-flex;
        align-items: flex-end;
        margin: 0 2px;
        position: relative;
    }

    .subscript-base {
        text-align: center;
        border: 2px dotted #e0e0e0 !important;
        border-radius: 3px;
        padding: 2px 4px;
        font-size: 14px;
        background: white;
    }

    .subscript-exponent {
        text-align: center;
        border: 2px dotted #e0e0e0 !important;
        border-radius: 3px;
        padding: 1px 3px;
        font-size: 12px;
        position: relative;
        bottom: -4px;
        left: -2px;
        background: white;
    }

    .root {
        display: inline-flex;
        align-items: center;
        margin: 0 2px;
        padding-top: 2px;
        position: relative;
    }

    .root::before {
        content: "√";
        font-size: 20px;
        line-height: 1;
        padding-right: 2px;
    }

    .root-input {
        width: 40px;
        text-align: center;
        border: 1px solid #e0e0e0;
        border-radius: 3px;
        padding: 2px 4px;
        font-size: 14px;
        background: white;
    }

    .math-container input {
        transition: all 0.2s ease;
        outline: none;
    }

    .math-container input:focus {
        border-color: #3b82f6;
        box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
    }

    .math-container input:hover {
        border-color: #94a3b8;
    }

    .chemical-fraction {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        margin: 0 4px;
    }

    .chemical-fraction .fraction {
        margin: 2px 0;
    }

    .chemical-equilibrium {
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
    }

    .chemical-equilibrium .arrow {
        margin: 0 8px;
        font-size: 20px;
        color: #475569;
    }

    .electron-shell {
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
        font-family: monospace;
    }

    .electron-shell input {
        width: 30px;
        text-align: center;
        border: 1px solid #e0e0e0;
        border-radius: 3px;
        padding: 2px 4px;
        font-size: 14px;
        margin: 0 2px;
        background: white;
    }

    .math-container:hover {
        /* background: #f1f5f9; */
    }

    .math-container:focus-within {
        /* background: #f1f5f9; */
        /* box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1); */
    }

    .answer-box {
        border: 2px solid #000000;
        border-radius: 8px;
        padding: 10px;
        /* margin-top: 20px; */
        border-top: none;
        border-top-left-radius: 0px;
        border-top-right-radius: 0px;
    }

    .answer-label {
        font-weight: bold;
        margin-bottom: 10px;
        display: block;
    }

    .math-symbol {
        font-family: 'STIXGeneral', 'Latin Modern Math', serif;
        font-size: 1.2em;
        padding: 0 2px;
        vertical-align: middle;
    }

    .fraction {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        vertical-align: middle;
        margin: 0 4px;
    }

    .fraction-input {
        width: 60px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 2px 4px;
        margin: 2px 0;
        font-size: 0.9em;
    }

    .fraction-line {
        width: 100%;
        height: 1px;
        background-color: currentColor;
        margin: 2px 0;
    }

    .root {
        position: relative;
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
        padding-left: 0.5em;
    }

    .root::before {
        content: "√";
        font-family: 'STIXGeneral', 'Latin Modern Math', serif;
        font-size: 1.4em;
        position: absolute;
        left: -0.5em;
    }

    .root-input {
        width: 60px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 2px 4px;
        font-size: 0.9em;
    }

    .power {
        display: inline-flex;
        align-items: flex-start;
        margin: 0 4px;
    }

    .script-input {
        width: 25px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 1px 2px;
        font-size: 0.8em;
    }

    sup .script-input {
        vertical-align: super;
        margin-bottom: 4px;
    }

    sub .script-input {
        vertical-align: sub;
        margin-top: 4px;
    }

    .icon-button {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 6px;
        border: 1px solid #e0e0e0;
        background: white;
        border-radius: 4px;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .icon-button:hover {
        background: #f5f5f5;
        border-color: #d0d0d0;
    }

    .icon-button svg {
        width: 16px;
        height: 16px;
        stroke: #666;
    }

    .icon-button:hover svg {
        stroke: #333;
    }

    .bracket {
        font-family: 'STIXGeneral', 'Latin Modern Math', serif;
        font-size: 1.2em;
        padding: 0 2px;
    }

    .bracket-input {
        width: 40px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 2px 4px;
        margin: 0 2px;
        font-size: 0.9em;
    }

    .single-bracket {
        display: inline-block;
        font-family: 'STIXGeneral', 'Latin Modern Math', serif;
        font-size: 1.2em;
        padding: 0 2px;
        cursor: default;
        user-select: none;
    }

    .align {
        display: block;
        margin: 10px 0;
    }

    .align-input {
        width: 100%;
        min-height: 60px;
        font-family: monospace;
        padding: 8px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        resize: vertical;
    }

    .chemical-equilibrium-fraction {
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
    }

    .chemical-equilibrium-fraction .fraction {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        position: relative;
    }

    .chemical-equilibrium-fraction .fraction-num,
    .chemical-equilibrium-fraction .fraction-den {
        width: 40px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 2px;
        margin: 2px 0;
    }

    .chemical-equilibrium-fraction .equilibrium-arrow {
        font-size: 1.2em;
        margin: 0 4px;
        color: var(--primary-color);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .isotope {
        display: inline-flex;
        align-items: baseline;
        margin: 0 2px;
    }

    .mass-number {
        font-size: 0.7em;
        vertical-align: super;
        margin-right: 1px;
        color: var(--primary-color);
    }

    .element-symbol {
        font-weight: 500;
    }

    .math-symbol.greek {
        font-family: "Times New Roman", serif;
        font-style: italic;
    }

    .nuclear-symbol {
        font-weight: bold;
        color: var(--primary-color);
    }

    .physical-symbol {
        font-style: italic;
        color: var(--primary-color);
    }

    /* Chemistry Specific Styles */
    .dropdown:has(button:contains("⚗️")), .dropdown:has(button:contains("🧬")) {
        .dropdown-content {
            min-width: 500px;
        }
        
        .dropdown-section {
            grid-template-columns: repeat(4, 1fr);
        }
    }

    .dropdown-section {
        padding: 8px;
        border-bottom: 1px solid var(--border-color);
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 4px;
    }

    .dropdown-section:last-child {
        border-bottom: none;
    }

    .dropdown-section button {
        padding: 4px 8px;
        font-size: 13px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .dropdown-header {
        grid-column: 1 / -1;
        font-weight: 600;
        color: var(--primary-color);
        margin-bottom: 4px;
        padding: 4px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .state-symbol {
        color: var(--primary-color);
        font-style: italic;
        margin: 0 2px;
    }

    .ion-symbol {
        color: var(--primary-color);
        font-weight: 500;
        margin: 0 2px;
    }

    .electron-config {
        font-size: 0.8em;
        vertical-align: super;
        color: var(--primary-color);
    }

    .electron-shell {
        display: inline-flex;
        align-items: center;
        margin: 0 4px;
    }

    .electron-shell-input {
        width: 60px;
        text-align: center;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        padding: 2px 4px;
        font-family: monospace;
    }

    /* Make dropdown sections more compact but readable */

    /* Improve dropdown layout */

    /* Add tooltips for buttons */
    [title] {
        position: relative;
    }

    [title]:hover::after {
        content: attr(title);
        position: absolute;
        bottom: 100%;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(0, 0, 0, 0.8);
        color: white;
        padding: 4px 8px;
        border-radius: 4px;
        font-size: 12px;
        white-space: nowrap;
        z-index: 1000;
        pointer-events: none;
    }

    /* Preview Container Styles */
    .preview-container {
        margin-top: 20px;
        border-top: 1px solid #e0e0e0;
        padding-top: 15px;
    }

    .preview-label {
        font-weight: bold;
        margin-bottom: 10px;
        color: #333;
    }

    .preview-content {
        padding: 10px;
        overflow-y: auto;
        background-color: #fff;
        border: 1px solid #ddd;
        border-radius: 4px;
    }

    .preview-line {
        margin: 5px 0;
        line-height: 1.5;
    }

    .math-preview {
        display: inline-block;
        vertical-align: middle;
        margin: 0 2px;
    }

    .math-preview-display {
        margin: 1em 0;
        text-align: center;
        overflow-x: auto;
    }

    .math-preview-display .katex-display {
        margin: 0;
    }

    /* Ensure KaTeX elements don't overflow */
    .katex-display > .katex {
        max-width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
    }

    /* Isotope container styles */
    .isotope-container {
        display: inline-block;
        position: relative;
        margin: 0 2px;
        vertical-align: middle;
        font-family: 'Times New Roman', Times, serif;
        padding: 2px;
    }

    .isotope-input-container {
        display: grid;
        /* Adjust the grid to bring elements closer */
        grid-template-areas:
            "mass  symbol"
            "atomic symbol";
        grid-template-columns: min-content auto;
        gap: 0;
        align-items: center;
    }

    /* Input styles */
    .isotope-container input {
        border: none;
        outline: none;
        background: transparent;
        padding: 0;
        margin: 0;
        font-family: inherit;
        text-align: center;
        min-width: 0.8em; /* Reduced from 1em */
    }

    .isotope-mass-number {
        grid-area: mass;
        font-size: 0.7em;
        transform: translateY(-0.1em); /* Adjusted from -0.2em */
        margin-right: -2px; /* Pull the mass number closer to symbol */
    }

    .isotope-atomic-number {
        grid-area: atomic;
        font-size: 0.7em;
        transform: translateY(0.1em); /* Adjusted from 0.2em */
        margin-right: -2px; /* Pull the atomic number closer to symbol */
    }

    .isotope-element-symbol {
        grid-area: symbol;
        font-size: 1em;
        font-weight: bold;
        margin-left: 1px; /* Reduced from default */
        padding-left: 2px; /* Add small padding to prevent overlap */
    }

    /* Focus styles */
    .isotope-container input:focus {
        background-color: rgba(0, 123, 255, 0.1);
        border-radius: 2px;
    }

    /* Placeholder styles */
    .isotope-container input::placeholder {
        color: #999;
        opacity: 0.5;
        font-size: 0.9em; /* Slightly smaller placeholders */
    }

    /* Hover effect */
    .isotope-container:hover {
        background-color: rgba(0, 0, 0, 0.02);
        border-radius: 4px;
    }

    /* Add compact class for even tighter spacing if needed */
    .isotope-container.compact {
        margin: 0;
    }

    .isotope-container.compact .isotope-input-container {
        gap: 0;
    }

    .physics-input {
        width: auto;
        min-width: 1em;
        border: none !important;
        border-bottom: 1px solid #ccc !important;
        border-radius: 0px !important; 
        padding: 0 2px !important;
        font-family: inherit;
        font-size: inherit;
        text-align: center;
        background: transparent;
    }
    .physics-input-container {
        display: inline-flex;
        align-items: center;
        gap: 2px;
    }