html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    font-size: 16px;
    line-height: 1.6;
    color: #000;
    background-color: #F0EADC;
    overflow-x: hidden;
    overflow-y: auto;
}

html {
    scrollbar-width: thin;
    scrollbar-color: #A31D1D #F0EADC;
}

::-webkit-scrollbar {
    width: 8px;
    height: 0;
}

::-webkit-scrollbar-thumb {
    background-color: #A31D1D;
    border-radius: 0;
    border: none;
}

::-webkit-scrollbar-track {
    background-color: #F0EADC;
    border-radius: 0;
}

::-webkit-scrollbar-corner {
    background-color: #F0EADC;
}

.pane::-webkit-scrollbar-thumb,
#markdown-input::-webkit-scrollbar-thumb,
#preview-content::-webkit-scrollbar-thumb,
#custom-css-input::-webkit-scrollbar-thumb {
    background-color: #A31D1D;
    border-radius: 0;
    border: none;
}

.pane::-webkit-scrollbar-track,
#markdown-input::-webkit-scrollbar-track,
#preview-content::-webkit-scrollbar-track,
#custom-css-input::-webkit-scrollbar-track {
    background-color: #F0EADC;
    border-radius: 0;
}

.pane,
#markdown-input,
#preview-content,
#custom-css-input {
    scrollbar-width: thin;
    scrollbar-color: #A31D1D #F0EADC;
}

.pane {
    overflow-x: hidden;
    overflow-y: auto;
}

#preview-content pre {
    overflow-x: auto;
}

.toolbar {
    padding: 8px 15px;
    background-color: #FDF5E6;
    border-bottom: 1px solid #E5D0AC;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    min-height: 34px;
    box-sizing: border-box;
}

.toolbar label {
    font-weight: bold;
    font-size: 0.9em;
    margin-right: 5px;
    color: #6D2323;
    margin-left: 10px;
}

.toolbar label:first-child {
    margin-left: 0;
}

.toolbar button,
.toolbar .button-group button {
    background-color: #A31D1D;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.85em;
    transition: background-color 0.2s ease;
    margin-left: 5px;
}

.toolbar button:hover,
.toolbar .button-group button:hover {
    background-color: #6D2323;
}

.toolbar .button-group {
    display: inline-flex;
    border: 1px solid #A31D1D;
    border-radius: 4px;
    overflow: hidden;
}

.toolbar .button-group button {
    border-radius: 0;
    margin-left: 0;
    border-left: 1px solid #6D2323;
    padding: 5px 10px;
}

.toolbar .button-group button:first-child {
    border-left: none;
}

.toolbar .button-group button.active {
    background-color: #6D2323;
    font-weight: bold;
}

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

.toolbar .dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 120px;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
    z-index: 100;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 2px;
}

.toolbar .dropdown-content button {
    color: black;
    background-color: white;
    padding: 10px 12px;
    text-decoration: none;
    display: block;
    width: 100%;
    text-align: left;
    border: none;
    border-radius: 0;
    font-weight: normal;
}

.toolbar .dropdown-content button:hover {
    background-color: #FEF9E1;
    color: #A31D1D;
}

.toolbar .dropdown:hover .dropdown-content,
.toolbar .dropdown>button:focus+.dropdown-content,
.toolbar .dropdown .dropdown-content:focus-within {
    display: block;
}

.container {
    display: flex;
    height: calc(100vh - 50px);
    width: 100vw;
}

.pane {
    flex: 1;
    height: 100%;
    overflow-y: auto;
    padding: 20px;
    box-sizing: border-box;
    position: relative;
}

#editor-pane {
    border-right: 1px solid #E5D0AC;
    display: flex;
    flex-direction: column;
    background-color: #FEF9E1;
}

#markdown-input {
    flex-grow: 1;
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    font-family: 'Fira Code', Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
    font-size: 14px;
    line-height: 1.6;
    color: #000;
    background-color: transparent;
    box-sizing: border-box;
    padding: 0;
}

#preview-pane {
    background-color: #FEF9E1;
    color: #000;
}

#custom-css-container {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 300px;
    max-width: 90%;
    z-index: 50;
    background-color: rgba(254, 249, 225, 0.95);
    border: 1px solid #E5D0AC;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
}

#custom-css-container h4 {
    margin: 0;
    padding: 8px 10px;
    background-color: #E5D0AC;
    color: #6D2323;
    font-size: 0.9em;
    border-bottom: 1px solid #E5D0AC;
    border-radius: 5px 5px 0 0;
}

#custom-css-input {
    flex-grow: 1;
    min-height: 150px;
    border: none;
    outline: none;
    resize: vertical;
    font-family: 'Fira Code', monospace;
    font-size: 13px;
    line-height: 1.5;
    color: #000;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 10px;
    margin-bottom: 5px;
}

#custom-css-controls {
    padding: 5px 10px;
    text-align: right;
    background-color: rgba(253, 245, 230, 0.8);
    border-top: 1px solid #E5D0AC;
    border-radius: 0 0 5px 5px;
}

#custom-css-controls button {
    padding: 4px 8px;
    font-size: 0.8em;
    margin-left: 5px;
}

#preview-content h1,
#preview-content h2,
#preview-content h3,
#preview-content h4,
#preview-content h5,
#preview-content h6 {
    margin-top: 1.2em;
    margin-bottom: 0.6em;
    font-weight: 600;
    color: #000;
    border-bottom: 1px solid #E5D0AC;
    padding-bottom: 0.3em;
}

#preview-content h1 {
    font-size: 2em;
}

#preview-content h2 {
    font-size: 1.75em;
}

#preview-content h3 {
    font-size: 1.5em;
}

#preview-content p {
    margin-bottom: 1em;
}

#preview-content a {
    color: #0366d6;
    text-decoration: none;
}

#preview-content a:hover {
    text-decoration: underline;
}

#preview-content p code,
#preview-content li code,
#preview-content td code,
#preview-content h1 code,
#preview-content h2 code,
#preview-content h3 code,
#preview-content h4 code,
#preview-content h5 code,
#preview-content h6 code,
#preview-content a code,
#preview-content em code,
#preview-content strong code,
#preview-content blockquote code {
    font-family: 'Fira Code', monospace;
    background-color: #F0EADC;
    color: #A31D1D;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 85%;
    white-space: nowrap;
    font-weight: normal;
}

#preview-content :not(pre)>code {
    color: #A31D1D !important;
    background-color: #F0EADC;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: 'Fira Code', monospace;
    font-size: 85%;
}

#preview-content pre {
    background-color: #F0EADC;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    border: 1px solid #E5D0AC;
    margin-bottom: 1em;
    line-height: 1.45;
}

#preview-content pre code.hljs {
    padding: 0;
    background-color: transparent;
    border-radius: 0;
    font-size: inherit;
    color: inherit;
}

#preview-content blockquote {
    color: #586069;
    padding: 0 1em;
    margin: 0 0 1em 0;
    background-color: transparent;
    border-left: 0.3em solid #E5D0AC;
}

#preview-content blockquote blockquote {
    margin-left: 1em;
    margin-top: 0.5em;
}

#preview-content table {
    border-collapse: collapse;
    margin-bottom: 1em;
    width: auto;
    border: 1px solid #E5D0AC;
    font-size: 0.95em;
}

#preview-content th,
#preview-content td {
    border: 1px solid #E5D0AC;
    padding: 0.6em 0.8em;
}

#preview-content th {
    background-color: #F0EADC;
    font-weight: bold;
    text-align: left;
}

#preview-content tr:nth-child(even) {
    background-color: rgba(240, 234, 220, 0.3);
}

#preview-content hr {
    border: none;
    border-top: 2px solid #E5D0AC;
    margin: 2em 0;
}

#preview-content .footnotes {
    margin-top: 2em;
    padding-top: 1em;
    border-top: 1px solid #E5D0AC;
    font-size: 0.9em;
    color: #333;
}

#preview-content .footnotes ol {
    padding-left: 20px;
}

#preview-content .footnote-ref a,
#preview-content .footnote-backref {
    text-decoration: none;
    color: #0366d6;
}

#preview-content .footnote-backref {
    margin-left: 5px;
}

#preview-content .footnote-backref:hover {
    text-decoration: underline;
}

#preview-content .mermaid {
    text-align: center;
    margin-bottom: 1em;
    background: white;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #E5D0AC;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

#preview-content .mermaid svg {
    max-width: 100%;
    height: auto;
}

#preview-content .mermaid-error {
    color: red;
    border: 1px dashed red;
    padding: 10px;
    margin-bottom: 1em;
    background-color: #ffebee;
}

.MathJax_Display,
.katex-display {
    font-size: 1.1em !important;
    outline: 0;
    margin-top: 0.8em !important;
    margin-bottom: 0.8em !important;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 5px;
}

.MathJax,
.katex {
    font-size: 1em !important;
}

.katex-display>.katex {
    text-align: center;
}

button:focus,
textarea:focus,
input:focus {
    outline: 2px solid #A31D1D;
    outline-offset: 2px;
}

.toolbar .button-group button:focus {
    outline-offset: -1px;
}

#btn-download-pdf:disabled {
    background-color: #ccc;
    cursor: wait;
}

.mobile-toggle-buttons {
    display: none;
    margin-right: 10px;
}

.mobile-toggle-buttons button {
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.85em;
    background-color: #A31D1D;
    color: white;
    border: none;
    transition: background-color 0.2s ease;
}

.mobile-toggle-buttons button.active {
    background-color: #6D2323;
}


.hamburger-btn {
    display: none;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-right: 15px;
    z-index: 1000;
    font-size: 1.4rem;
    line-height: 1;
    position: absolute;
    left: 10px;
    top: 3px;
}


.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: -85%;
    width: 85%;
    height: 100vh;
    background: #FDF5E6;
    z-index: 999;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
    transition: left 0.3s ease;
    padding-top: 60px;
    overflow-y: auto;
}

.mobile-menu.open {
    left: 0;
}

.mobile-menu-content {
    padding: 15px;
}

.mobile-menu-section {
    margin-bottom: 20px;
}

.mobile-menu-section label {
    display: block;
    font-weight: bold;
    color: #6D2323;
    margin-bottom: 10px;
    font-size: 1em;
}

.mobile-menu-section .button-group {
    display: flex;
    border: 1px solid #A31D1D;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.mobile-menu-section .button-group button {
    flex: 1;
    margin-bottom: 0;
    border-radius: 0;
    border-left: 1px solid #6D2323;
}

.mobile-menu-section .button-group button:first-child {
    border-left: none;
}

.mobile-menu-section .button-group button.active {
    background-color: #6D2323;
    font-weight: bold;
}

.mobile-menu-section button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 8px;
    text-align: left;
    background-color: #A31D1D;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}

.mobile-menu-section button:hover {
    background-color: #6D2323;
}

.mobile-menu-section button.active {
    background-color: #6D2323;
    font-weight: bold;
}

.mobile-menu-section .button-group button.active {
    background-color: #6D2323;
    font-weight: bold;
}


.autosave-indicator {
    font-size: 0.8em;
    color: #6D2323;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.autosave-indicator.visible {
    opacity: 1;
}

@media screen and (max-width: 991px) {
    .toolbar {
        padding: 8px 10px;
        gap: 10px;
    }

    #preview-content h1 {
        font-size: 1.8em;
    }

    #preview-content h2 {
        font-size: 1.6em;
    }

    #preview-content h3 {
        font-size: 1.4em;
    }
}

@media screen and (max-width: 768px) {

    body,
    html {
        font-size: 14px;
    }

    .mobile-toggle-buttons {
        display: flex;
        margin: 0 auto;
        justify-content: center;
        width: 100%;
        order: -1;
        margin-bottom: 8px;
    }

    .mobile-toggle-buttons button {
        padding: 8px 16px;
        font-size: 0.9em;
    }

    .toolbar {
        flex-wrap: wrap;
        justify-content: center;
        gap: 5px;
        padding: 8px 5px 8px 50px;
        position: relative;
    }


    .toolbar>a[href*="github"] {
        display: none;
    }


    .toolbar>span {
        display: none;
    }


    .toolbar {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }


    .toolbar label {
        margin: 5px 0 2px 0;
        width: 100%;
        text-align: center;
    }

    .toolbar .button-group {
        flex-grow: 1;
        justify-content: center;
        max-width: 80%;
        margin: 0 auto 8px auto;
    }

    .toolbar .button-group button {
        flex: 1;
        text-align: center;
        padding: 6px 8px;
        font-size: 0.8em;
    }


    .toolbar .dropdown {
        position: static;
        width: 80%;
        margin: 5px auto;
    }

    .toolbar #btn-download {
        width: 100%;
        margin-left: 0;
    }

    .toolbar .dropdown-content {
        position: fixed;
        top: auto;
        left: 10px;
        right: 10px;
        width: auto;
    }


    .toolbar #btn-toggle-css {
        margin: 0 auto;
        width: 80%;
    }


    .container {
        flex-direction: column;
        height: calc(100vh - 105px);
        min-height: 300px;
        margin-bottom: 0;
    }


    .pane {
        height: 100%;
        width: 100%;
        padding: 15px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    #editor-pane,
    #preview-pane {
        max-height: 100%;
    }

    #markdown-input {
        padding-bottom: 50px;
    }

    #preview-content {
        padding-bottom: 60px;
        overflow-x: auto;
    }


    .hamburger-btn {
        display: flex;
        order: -2;
    }


    .mobile-menu {
        display: block;
    }


    .desktop-controls {
        display: none;
    }


    .mobile-toggle-buttons {
        display: flex;
        margin: 0 auto;
        justify-content: center;
        width: calc(100% - 50px);

        order: -1;
    }


    #preview-content .MathJax_Display,
    #preview-content .katex-display {
        max-width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 5px 0;
    }


    #preview-content table {
        display: block;
        overflow-x: auto;
        width: 100%;
    }


    #preview-content pre {
        max-width: 100%;
        overflow-x: auto;
    }

    .autosave-indicator {
        position: absolute;
        bottom: 5px;
        right: 5px;
        font-size: 0.7em;
        z-index: 100;
    }
}


@media screen and (max-height: 500px) {
    .container {
        height: calc(100vh - 85px);
    }

    .pane {
        padding: 10px 15px;
    }

    .mobile-menu {
        padding-top: 45px;
    }
}

@media screen and (max-width: 480px) {
    .toolbar {
        padding: 5px;
        gap: 3px;
    }

    .toolbar button,
    .toolbar .button-group button {
        padding: 5px 8px;
        font-size: 0.75em;
    }

    .mobile-toggle-buttons button {
        padding: 6px 12px;
        font-size: 0.85em;
    }

    #preview-content pre {
        padding: 8px;
    }

    #preview-content table {
        font-size: 0.85em;
    }

    #preview-content th,
    #preview-content td {
        padding: 0.4em 0.6em;
    }
}

@media print {
    body {
        font-size: 11pt;
        line-height: 1.4;
    }

    pre,
    code {
        font-size: 9pt;
        white-space: pre-wrap;
        word-wrap: break-word;
        page-break-inside: avoid;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        page-break-inside: avoid;
    }

    img,
    svg {
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        page-break-after: avoid;
        page-break-inside: avoid;
    }

    .page-break-before {
        page-break-before: always;
    }

    .page-break-after {
        page-break-after: always;
    }
}


#preview-content {
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    hyphens: auto;
}

#preview-content pre code {
    white-space: pre;
    word-wrap: normal;
    overflow-x: auto;
}


.source-code-link {
    margin-right: 15px;
    color: #A31D1D;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9em;
}


.toolbar-info {
    margin-left: auto;
    font-size: 0.8em;
    color: #6D2323;
}