html, body {
    margin: 0;
    padding: 0;
    background-color: #1d252c;
    color: #b7c5d3;
    font-family: "Inter", "Fira Sans", system-ui, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

body {
    display: flex;
}

#table-of-contents {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    overflow-y: auto;
    padding: 1.2rem 1rem;
    background-color: #232b32;
    border-right: 1px solid #2f3b45;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
}

#table-of-contents h2 {
    display: none;
}

#toc-search-container {
    margin-bottom: 1rem;
    position: sticky;
    top: 0;
    background-color: #232b32;
    z-index: 10;
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#toc-search-input {
    flex: 1;
    padding: 0.5rem;
    background-color: #1d252c;
    border: 1px solid #2f3b45;
    color: #b7c5d3;
    border-radius: 4px;
    font-size: 0.9rem;
    box-sizing: border-box;
}

#toc-search-input:focus {
    outline: none;
    border-color: #5ec4ff;
}

#toc-search-clear {
    padding: 0.5rem 0.7rem;
    background-color: #2f3b45;
    border: 1px solid #3a4a56;
    color: #b7c5d3;
    cursor: pointer;
    font-size: 0.85rem;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
    white-space: nowrap;
}

#toc-search-clear:hover {
    background-color: #3a4a56;
    color: #ff6b6b;
}

.hidden-by-search {
    display: none !important;
}

#text-table-of-contents {
    flex: 1;
}

#text-table-of-contents ul {
    list-style: none;
    padding-left: 0;
}

#text-table-of-contents li {
    margin: 0.2rem 0;
    position: relative;
}

.toc-entry {
    display: inline-flex;
    align-items: center;
}

#text-table-of-contents a {
    color: #b7c5d3;
    text-decoration: none;
}

#text-table-of-contents a:hover {
    color: #5ec4ff;
}

#text-table-of-contents ul ul {
    padding-left: 1rem;
    border-left: 1px solid #2f3b45;
}

#content {
    margin-left: 300px;
    margin-right: 320px;
    padding: 2rem 3rem;
    max-width: 1200px;
    width: calc(100vw - 620px);
    box-sizing: border-box;
    transition: margin 0.3s ease, padding 0.3s ease,
                width 0.3s ease, max-width 0.3s ease;
}

#content.pinned-hidden {
    margin-right: 0;
    width: calc(100vw - 300px);
}

h1, h2, h3, h4, h5, h6, h7, h8, h9 {
    color: #70e1e8;
    font-weight: 500;
    margin-top: 2.2rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.2rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1.0rem; }
h7 { font-size: 0.95rem; }
h8 { font-size: 0.925rem; }
h9 { font-size: 0.9rem; }

a {
    color: #5ec4ff;
}

a:hover {
    text-decoration: underline;
}

pre, code {
    font-family: "Fira Code", monospace;
    background-color: #232b32;
    color: #b7c5d3;
}

pre {
    padding: 1rem;
    overflow-x: auto;
    border: 1px solid #2f3b45;
    border-radius: 4px;
    max-width: 100%;
    box-sizing: border-box;
}

code {
    padding: 0.15rem 0.3rem;
    border-radius: 3px;
}

table {
    border-collapse: collapse;
    max-width: 100%;
}

th, td {
    border: 1px solid #2f3b45;
    padding: 0.5rem 0.8rem;
}

th {
    background-color: #232b32;
    color: #70e1e8;
}

blockquote {
    border-left: 3px solid #5ec4ff;
    margin-left: 0;
    padding-left: 1rem;
    color: #718ca1;
}

#pinned-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    overflow-y: auto;
    padding: 1.2rem 1rem;
    padding-bottom: 5rem;
    background-color: #232b32;
    border-left: 1px solid #2f3b45;
    font-size: 0.9rem;
    box-sizing: border-box;
    transition: transform 0.3s ease;
}

#pinned-panel.hidden {
    transform: translateX(100%);
}

#pinned-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#pinned-panel h2 {
    margin: 0;
    font-size: 1rem;
    color: #70e1e8;
    font-weight: 500;
}

#toggle-pinned-btn {
    background: none;
    border: none;
    color: #718ca1;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    line-height: 1;
}

#toggle-pinned-btn:hover {
    color: #5ec4ff;
}

#pinned-list {
    list-style: none;
    padding-left: 0;
}

#pinned-list li {
    margin: 0.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#pinned-list a {
    color: #b7c5d3;
    text-decoration: none;
    flex: 1;
}

#pinned-list a:hover {
    color: #5ec4ff;
}

.pin-remove {
    background: none;
    border: none;
    color: #718ca1;
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0 0.3rem;
}

.pin-remove:hover {
    color: #ff6b6b;
}

.toc-pin-btn {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    cursor: pointer;
    margin-left: 0.4rem;
    font-size: 0.85rem;
    color: #718ca1;
    background: none;
    border: none;
    padding: 0;
}

.toc-pin-btn:hover {
    color: #5ec4ff;
}

#text-table-of-contents .toc-entry:hover .toc-pin-btn {
    opacity: 1;
    visibility: visible;
}

#show-pinned-btn {
    position: fixed;
    top: 4.5rem;
    right: 1rem;
    background-color: #232b32;
    border: 1px solid #2f3b45;
    color: #b7c5d3;
    cursor: pointer;
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    border-radius: 4px;
    display: none;
    z-index: 1000;
}

#show-pinned-btn:hover {
    background-color: #2f3b45;
    color: #5ec4ff;
}

#show-pinned-btn.visible {
    display: block;
}

#mobile-toc-toggle,
#mobile-pinned-toggle {
    position: fixed;
    top: 1rem;
    z-index: 1100;
    padding: 0.5rem 0.8rem;
    border-radius: 4px;
    border: 1px solid #2f3b45;
    background-color: #232b32;
    color: #b7c5d3;
    font-size: 0.8rem;
    cursor: pointer;
    display: none;
}

#mobile-toc-toggle {
    left: 1rem;
}

#mobile-pinned-toggle {
    right: 1rem;
}

#mobile-toc-toggle:hover,
#mobile-pinned-toggle:hover {
    background-color: #2f3b45;
    color: #5ec4ff;
}

.heading-next {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    margin-left: 0.5rem;
    color: #718ca1;
    text-decoration: none;
    font-size: 0.8em;
    vertical-align: middle;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.heading-next:hover {
    color: #5ec4ff;
    text-decoration: none;
}

h1:hover .heading-next,
h2:hover .heading-next,
h3:hover .heading-next,
h4:hover .heading-next,
h5:hover .heading-next,
h6:hover .heading-next,
h7:hover .heading-next,
h8:hover .heading-next,
h9:hover .heading-next {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 1600px) {
    #content {
        max-width: 100%;
    }
}

@media (max-width: 1300px) {
    #mobile-pinned-toggle {
        display: block;
    }

    #pinned-panel {
        display: block !important;
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        max-width: 80vw;
        height: 100vh;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        z-index: 1000;
    }

    #pinned-panel.mobile-visible {
        transform: translateX(0);
    }

    #show-pinned-btn {
        display: none !important;
    }

    #content,
    #content.pinned-hidden {
        margin-right: 0;
        width: calc(100vw - 300px);
        max-width: 100%;
        padding: 1.8rem 2.2rem;
    }
}


@media (max-width: 1000px) {
    #mobile-toc-toggle,
    #mobile-pinned-toggle {
        display: block;
    }

    #table-of-contents {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 260px;
        max-width: 80vw;
        height: 100vh;
        overflow-y: auto;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: 1000;
    }

    #table-of-contents.mobile-visible {
        transform: translateX(0);
    }

    #pinned-panel {
        display: block !important;
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        max-width: 80vw;
        height: 100vh;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        z-index: 1000;
    }

    #pinned-panel.mobile-visible {
        transform: translateX(0);
    }

    #content,
    #content.pinned-hidden {
        margin-left: 0;
        margin-right: 0;
        width: 100vw;
        max-width: 100%;
        padding: 1.5rem 1.25rem;
    }
    #toc-search-container {
        top: 3rem;
        margin-top: 2.5rem;
    }
}

.heading-link {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    margin-left: 0.5rem;
    color: #718ca1;
    text-decoration: none;
    font-size: 0.8em;
    vertical-align: middle;
}

.heading-link:hover {
    color: #5ec4ff;
    text-decoration: none;
}

h1:hover .heading-link,
h2:hover .heading-link,
h3:hover .heading-link,
h4:hover .heading-link,
h5:hover .heading-link,
h6:hover .heading-link,
h7:hover .heading-link,
h8:hover .heading-link,
h9:hover .heading-link {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 700px) {
    #content {
        padding: 1.2rem 1rem;
    }
}

.darkmode-layer,
.darkmode-toggle {
    z-index: 500;
}

html,
body {
    overflow-x: hidden;
}

h1 .toc-pin-btn,
h2 .toc-pin-btn,
h3 .toc-pin-btn,
h4 .toc-pin-btn,
h5 .toc-pin-btn,
h6 .toc-pin-btn,
h7 .toc-pin-btn,
h8 .toc-pin-btn,
h9 .toc-pin-btn {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

h1:hover .toc-pin-btn,
h2:hover .toc-pin-btn,
h3:hover .toc-pin-btn,
h4:hover .toc-pin-btn,
h5:hover .toc-pin-btn,
h6:hover .toc-pin-btn,
h7:hover .toc-pin-btn,
h8:hover .toc-pin-btn,
h9:hover .toc-pin-btn {
    opacity: 1;
    visibility: visible;
}

#clear-all-pins-btn {
    width: 100%;
    margin: 0.5rem 0;
    padding: 0.4rem 0.6rem;
    background-color: #2f3b45;
    border: 1px solid #3a4a56;
    color: #b7c5d3;
    cursor: pointer;
    font-size: 0.85rem;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}

#clear-all-pins-btn:hover {
    background-color: #3a4a56;
    color: #ff6b6b;
}

@media (max-width: 1000px) {
    body.mobile-panel-open {
        overflow: hidden;
    }
}