/* ─── Fonts ─────────────────────────────────────────────────────────────── */
@font-face {
    font-family: "Iosevka";
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/iosevka/subset-regular.woff2") format("woff2");
}
@font-face {
    font-family: "Iosevka";
    font-style: bold;
    font-weight: 700;
    font-display: swap;
    src: url("../fonts/iosevka/subset-bold.woff2") format("woff2");
}

/* ─── Theme tokens ───────────────────────────────────────────────────────── */
:root {
    --bg:           #FAFAFA;
    --text:         #212121;
    --accent:       #0D47A1;
    --border:       #898EA4;
    --accent-bg:    #F5F7FF;
    --standard-border: 1px solid var(--border);
    --sidebar-bg:   #F0F2F8;
    --topbar-bg:    #FAFAFA;

    --font:         "Iosevka", ui-monospace, "Cascadia Code", monospace;

    --sidebar-w:    260px;
    --topbar-h:     52px;
    --toc-w:        220px;
    --content-max:  740px;
    --radius:       0;

    color-scheme: light;
}

/* Define the dark palette once as a reusable block */
:root .theme-dark {
    --bg:           #212121;
    --text:         #DCDCDC;
    --accent:       #FFB300;
    --border:       #555;
    --accent-bg:    #2B2B2B;
    --sidebar-bg:   #1A1A1A;
    --topbar-bg:    #212121;
    color-scheme: dark;
}

/* Apply it to the HTML attribute */
html[data-theme="dark"] {
    @extend .theme-dark;
}

/* Apply it to the system preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg:           #212121;
        --text:         #DCDCDC;
        --accent:       #FFB300;
        --border:       #555;
        --accent-bg:    #2B2B2B;
        --sidebar-bg:   #1A1A1A;
        --topbar-bg:    #212121;
        color-scheme: dark;
    }
}

html[data-theme="light"] {
    --bg:           #FAFAFA;
    --text:         #212121;
    --accent:       #0D47A1;
    --border:       #898EA4;
    --accent-bg:    #F5F7FF;
    --sidebar-bg:   #F0F2F8;
    --topbar-bg:    #FAFAFA;
    color-scheme: light;
}

/* ─── Reset & base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.7;
}

a { color: var(--accent); }
a:hover { text-decoration: none; }

/* ─── Layout shell ───────────────────────────────────────────────────────── */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ─── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 200;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease;
}

.sidebar-header {
    padding: 1.25rem 1rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.sidebar-logo {
    text-decoration: none;
}

.logo {
    color: var(--accent);
    border: 2px solid currentColor;
    font-weight: bold;
    font-size: 1.1rem;
    display: inline-flex;
}

.logo .pure,
.logo .service {
    padding: 0 0.5rem;
}

.logo .service {
    background: var(--accent);
    color: var(--bg);
}

.sidebar-subtitle {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-nav {
    padding: 1rem 0 2rem;
    flex: 1;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--border);
    padding: 0 1rem 0.4rem;
}

.nav-items {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: block;
    padding: 0.3rem 1rem;
    font-size: 0.9rem;
    color: var(--text);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.1s, border-color 0.1s, background 0.1s;
}

.nav-link:hover {
    color: var(--accent);
    background: var(--accent-bg);
}

.nav-link.active {
    color: var(--accent);
    border-left-color: var(--accent);
    background: var(--accent-bg);
    font-weight: 600;
}

/* ─── Main wrapper ───────────────────────────────────────────────────────── */
.main-wrapper {
    flex: 1;
    min-width: 0;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
}

/* ─── Top bar ────────────────────────────────────────────────────────────── */
.topbar {
    height: var(--topbar-h);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

#sidebar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    padding: 0.25rem;
    border-radius: var(--radius);
    line-height: 1;
    flex-shrink: 0;
}

#sidebar-toggle:hover { background: var(--accent-bg); }

.search-trigger {
    flex: 1;
    max-width: 360px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.35rem 0.75rem;
    cursor: pointer;
    color: var(--border);
    font-size: 0.875rem;
    font-family: var(--font);
    text-align: left;
    transition: border-color 0.1s;
}

.search-trigger:hover { border-color: var(--accent); color: var(--text); }

.search-placeholder { flex: 1; }

.search-kbd {
    font-size: 0.75rem;
    font-family: var(--font);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.1em 0.4em;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.topbar-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
}

.topbar-link:hover { background: var(--accent-bg); color: var(--accent); }

#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    padding: 0.25rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    line-height: 1;
}

#theme-toggle:hover { background: var(--accent-bg); }

/* Show moon in light, sun in dark */
.icon-sun { display: none; }
.icon-moon { display: flex; }

html[data-theme="dark"] .icon-sun { display: flex; }
html[data-theme="dark"] .icon-moon { display: none; }

@media (prefers-color-scheme: dark) {
    .icon-sun { display: flex; }
    .icon-moon { display: none; }
    html[data-theme="light"] .icon-sun { display: none; }
    html[data-theme="light"] .icon-moon { display: flex; }
}

/* ─── Content area ───────────────────────────────────────────────────────── */
.content-area {
    display: flex;
    flex: 1;
    min-width: 0;
}

.doc-content {
    flex: 1;
    min-width: 0;
    padding: 2.5rem 2rem;
    max-width: calc(var(--content-max) + 4rem);
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.article-header h1 {
    margin: 0 0 0.5rem;
    font-size: 2rem;
    line-height: 1.2;
    font-weight: 700;
}

.article-description {
    margin: 0;
    font-size: 1.05rem;
    color: var(--border);
}

/* ─── Article body (prose) ───────────────────────────────────────────────── */
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
    scroll-margin-top: calc(var(--topbar-h) + 1rem);
}

.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.2rem; }
.article-body h4 { font-size: 1rem; font-weight: 700; }

.article-body h2 a,
.article-body h3 a,
.article-body h4 a {
    color: inherit;
    text-decoration: none;
}

.article-body h2 a:hover,
.article-body h3 a:hover,
.article-body h4 a:hover {
    color: var(--accent);
}

.article-body p { margin: 1rem 0; }

.article-body a { color: var(--accent); }

.article-body ul,
.article-body ol {
    padding-left: 1.5rem;
    margin: 1rem 0;
}

.article-body li { margin: 0.25rem 0; }

.article-body blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin: 1.5rem 0 1.5rem 0;
    font-style: italic;
    color: var(--border);
}

.article-body blockquote p { opacity: 0.9; }

.article-body code {
    font-family: var(--font);
    font-size: 0.875em;
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.1em 0.35em;
}

.article-body pre {
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    position: relative;
}

.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.875rem;
    white-space: pre;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.article-body th,
.article-body td {
    border: 1px solid var(--border);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.article-body th {
    background: var(--accent-bg);
    font-weight: 600;
}

.article-body tr:nth-child(even) td { background: var(--accent-bg); }

.article-body img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 1.5rem 0;
    display: block;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

/* ─── Code copy button ───────────────────────────────────────────────────── */
.code-wrapper {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    font-family: var(--font);
    cursor: pointer;
    color: var(--text);
    opacity: 0;
    transition: opacity 0.15s;
}

.code-wrapper:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: var(--accent-bg); }
.copy-btn.copied { color: var(--accent); }

/* ─── Prev / Next ────────────────────────────────────────────────────────── */
.doc-prevnext {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.prevnext-btn {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 45%;
    transition: border-color 0.1s, background 0.1s;
}

.prevnext-btn:hover {
    border-color: var(--accent);
    background: var(--accent-bg);
}

.prevnext-next { margin-left: auto; text-align: right; }

.prevnext-direction {
    font-size: 0.75rem;
    color: var(--border);
    margin-bottom: 0.2rem;
}

.prevnext-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
}

/* ─── TOC sidebar ────────────────────────────────────────────────────────── */
.toc-sidebar {
    display: none;
    width: var(--toc-w);
    flex-shrink: 0;
    padding: 2.5rem 1rem 2rem 0;
    position: sticky;
    top: var(--topbar-h);
    max-height: calc(100vh - var(--topbar-h));
    overflow-y: auto;
    align-self: flex-start;
}

.toc-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--border);
    margin-bottom: 0.75rem;
}

#toc-nav a {
    display: block;
    font-size: 0.8rem;
    color: var(--text);
    text-decoration: none;
    padding: 0.2rem 0;
    border-left: 2px solid var(--border);
    padding-left: 0.75rem;
    margin-bottom: 0.15rem;
    transition: color 0.1s, border-color 0.1s;
}

#toc-nav a:hover { color: var(--accent); }
#toc-nav a.toc-active { color: var(--accent); border-left-color: var(--accent); }
#toc-nav a.toc-h3 { padding-left: 1.5rem; font-size: 0.75rem; }

/* ─── Search modal ───────────────────────────────────────────────────────── */
.search-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
}

.search-modal[hidden] { display: none; }

.search-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}

.search-dialog {
    position: relative;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 90%;
    max-width: 520px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    overflow: hidden;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--border);
}

#search-input {
    flex: 1;
    background: none;
    border: none;
    font-size: 1rem;
    font-family: var(--font);
    color: var(--text);
    outline: none;
}

#search-close {
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-family: var(--font);
    color: var(--border);
    cursor: pointer;
    padding: 0.1em 0.4em;
}

.search-results {
    list-style: none;
    margin: 0;
    padding: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.search-results li a {
    display: block;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
}

.search-results li a:hover,
.search-results li a.selected {
    background: var(--accent-bg);
    color: var(--accent);
}

.search-result-title { font-weight: 600; font-size: 0.9rem; }
.search-result-desc { font-size: 0.8rem; color: var(--border); margin-top: 0.1rem; }

.search-empty {
    padding: 1rem;
    text-align: center;
    color: var(--border);
    font-size: 0.9rem;
}

/* ─── Notice boxes ───────────────────────────────────────────────────────── */
.article-body .notice {
    background: var(--accent-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin: 1.5rem 0;
}

/* ─── Homepage ───────────────────────────────────────────────────────────── */
.home-layout {
    max-width: 640px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}

.home-logo {
    display: inline-flex;
    margin-bottom: 1.5rem;
    text-decoration: none;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (min-width: 1280px) {
    .toc-sidebar { display: block; }
}

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
    }

    #sidebar-toggle { display: flex; }

    .topbar-link-label { display: none; }

    .search-kbd { display: none; }
}

@media (max-width: 640px) {
    .doc-content { padding: 1.5rem 1rem; }

    .article-header h1 { font-size: 1.6rem; }

    .doc-prevnext { flex-direction: column; }

    .prevnext-btn { max-width: 100%; }
    .prevnext-next { text-align: left; }
}

/* ─── Changelog ──────────────────────────────────────────────────────────── */
.article-body h2 {
    margin-top: 3rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    font-size: 1.5rem;
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body h3 {
    display: inline-block;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    padding: 0.15rem 0.6rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--accent-bg);
    color: var(--accent);
    border-left: 3px solid var(--accent);
}

/* ─── Themes ─────────────────────────────────────────────────────────────── */
.card {
    border: 1px solid var(--border);
    padding: 1rem;
    background: var(--accent-bg);
    margin: 2.5rem 0;
}

.card h2 {
    margin-top: 0;
}

.card img {
    max-width: 100%;
    height: auto;
    margin: 1.5rem auto;
    display: block;
}

table.themes {
    background-color: var(--bg);
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--border);
    margin: 1.5rem 0;
}

table.themes td, 
table.themes th {
    border: 1px solid var(--border);
    padding: 0.5rem;
}

table.themes th {
    background-color: var(--accent-bg);
    font-weight: 700;
}

table.themes td:nth-child(2),
table.themes td:nth-child(3) {
    text-align: center;
}

table.themes td code {
    background: var(--accent-bg);
    padding: 0.1rem 0.25rem;
}