/* ===========================================================================
   Authwall documentation theme
   ---------------------------------------------------------------------------
   Visual layer only. Every class/attribute hook used by docs.js (search,
   theme toggle, mermaid, code-copy, scroll-spy) and by build-docs (shiki,
   alerts, nav, toc, pager) is preserved — this file restyles them, nothing
   more. Two themes via :root / :root[data-theme="dark"].
   =========================================================================== */

:root {
    color-scheme: light;

    --header-h: 60px;

    --bg: #fcfcfd;
    --panel: #ffffff;
    --panel-soft: #f2f3f7;
    --panel-softer: #f8f9fb;

    --text: #1a1d24;
    --text-strong: #0b0d12;
    --muted: #5e6472;
    --faint: #8a90a0;

    --border: #e7e9ef;
    --border-strong: #d4d8e2;

    --accent: #4f46e5;
    --accent-strong: #4338ca;
    --accent-soft: #eef0fe;
    --accent-line: #c8c9fb;

    --good: #16a34a;
    --warn: #d97706;
    --bad: #dc2626;

    --mark-bg: #ffe49b;
    --mark-text: #3a2c00;

    --code-bg: #0f1729;
    --code-text: #e5edf7;

    --shadow-sm: 0 1px 2px rgba(16, 20, 40, 0.06);
    --shadow-md: 0 8px 24px rgba(16, 20, 40, 0.10);
    --shadow-lg: 0 18px 48px rgba(16, 20, 40, 0.18);

    --radius: 8px;
    --radius-sm: 6px;

    --measure: 800px;
}

:root[data-theme="dark"] {
    color-scheme: dark;

    --bg: #0c0d11;
    --panel: #15171e;
    --panel-soft: #1c1f28;
    --panel-softer: #181b22;

    --text: #e6e8ef;
    --text-strong: #f5f7fb;
    --muted: #969dae;
    --faint: #6c7286;

    --border: #262934;
    --border-strong: #383c4a;

    --accent: #8c87f7;
    --accent-strong: #a8a3f9;
    --accent-soft: #1d1b39;
    --accent-line: #46428f;

    --good: #4ade80;
    --warn: #fbbf24;
    --bad: #f87171;

    --mark-bg: #6a531a;
    --mark-text: #ffe9a8;

    --code-bg: #0b0e14;
    --code-text: #e8edf3;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.32);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.42);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.55);
}

* {
    box-sizing: border-box;
}

html {
    scroll-padding-top: calc(var(--header-h) + 20px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

::selection {
    background: color-mix(in srgb, var(--accent) 26%, transparent);
}

a {
    color: var(--accent);
    text-decoration: none;
    text-underline-offset: 2px;
}

a:hover {
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 3px;
}

/* Thin, theme-aware scrollbars on the scrolling panels. */
.sidebar,
.toc,
.search-results,
pre {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

.sidebar::-webkit-scrollbar,
.toc::-webkit-scrollbar,
.search-results::-webkit-scrollbar,
pre::-webkit-scrollbar {
    width: 9px;
    height: 9px;
}

.sidebar::-webkit-scrollbar-thumb,
.toc::-webkit-scrollbar-thumb,
.search-results::-webkit-scrollbar-thumb,
pre::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: 9px;
    background-clip: padding-box;
    background-color: var(--border-strong);
}

.sidebar::-webkit-scrollbar-track,
.toc::-webkit-scrollbar-track,
.search-results::-webkit-scrollbar-track,
pre::-webkit-scrollbar-track {
    background: transparent;
}

/* === Header =============================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 18px;
    min-height: var(--header-h);
    padding: 8px 24px;
    background: color-mix(in srgb, var(--panel) 86%, transparent);
    border-bottom: 1px solid var(--border);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
}

.brand-group {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-strong);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.01em;
}

/* A gradient chip carrying the same lock mark as the app (see the brand-icon
   in design/public_html/spa.html) stands in as a wordmark, no markup required. */
.brand::before {
    content: "";
    width: 24px;
    height: 24px;
    border-radius: 7px;
    background:
        url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='white'%20stroke-width='2.2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Crect%20x='3'%20y='11'%20width='18'%20height='11'%20rx='2'/%3E%3Cpath%20d='M7%2011V7a5%205%200%200%201%2010%200v4'/%3E%3C/svg%3E") center / 14px 14px no-repeat,
        linear-gradient(135deg, var(--accent), #8b5cf6);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18), var(--shadow-sm);
}

.brand:hover {
    text-decoration: none;
}

.brand-version {
    padding: 2px 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel-soft);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
    margin-left: auto;
}

.github-link,
.mode-link,
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    color: var(--text);
    font: inherit;
    font-size: 13.5px;
    font-weight: 500;
    line-height: 1;
    box-shadow: var(--shadow-sm);
    transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}

.github-link {
    width: 38px;
    padding: 0;
    color: var(--muted);
}

.github-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.theme-toggle {
    cursor: pointer;
}

.github-link:hover,
.mode-link:hover,
.theme-toggle:hover {
    border-color: var(--border-strong);
    background: var(--panel-soft);
    color: var(--text-strong);
    text-decoration: none;
}

/* === Search =============================================================== */

.search {
    position: relative;
    flex: 1 1 auto;
    max-width: 480px;
}

.search::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--faint);
    -webkit-mask: var(--search-icon) center / 16px 16px no-repeat;
    mask: var(--search-icon) center / 16px 16px no-repeat;
    pointer-events: none;
    --search-icon: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='16'%20height='16'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='black'%20stroke-width='2.2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Ccircle%20cx='11'%20cy='11'%20r='7'/%3E%3Cpath%20d='m21%2021-4.35-4.35'/%3E%3C/svg%3E");
}

.search-input {
    width: 100%;
    min-height: 36px;
    padding: 0 36px 0 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    color: var(--text);
    font: inherit;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.search-input::placeholder {
    color: var(--faint);
}

.search-input::-webkit-search-cancel-button {
    display: none;
}

.search-clear {
    position: absolute;
    top: 50%;
    right: 7px;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    padding: 0;
    border: 0;
    border-radius: 5px;
    background: var(--panel-soft);
    color: var(--muted);
    font: inherit;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    transition: background 120ms ease, color 120ms ease;
}

.search-clear:hover {
    color: var(--text-strong);
    background: var(--border);
}

mark.search-hit {
    padding: 0 2px;
    border-radius: 3px;
    background: var(--mark-bg);
    color: var(--mark-text);
    font-weight: 600;
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    max-height: 70vh;
    overflow-y: auto;
    padding: 6px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 30;
}

.search-result {
    display: block;
    padding: 9px 11px;
    border-radius: var(--radius-sm);
    color: var(--text);
}

.search-result:hover,
.search-result.is-active {
    background: var(--accent-soft);
    text-decoration: none;
}

.search-result-crumb {
    display: block;
    font-weight: 600;
    font-size: 13.5px;
    color: var(--text-strong);
}

.search-crumb {
    color: var(--faint);
    font-weight: 500;
}

.search-result-snippet {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.search-empty {
    margin: 0;
    padding: 12px;
    color: var(--muted);
    font-size: 14px;
}

.search-no-matches {
    margin: 0;
    padding: 64px 0;
    color: var(--muted);
    font-size: 15px;
    text-align: center;
}

/* === Layout =============================================================== */

.docs-shell {
    display: grid;
    grid-template-columns: minmax(232px, 264px) minmax(0, 1fr) minmax(190px, 230px);
    gap: 40px;
    max-width: 1440px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.sidebar,
.toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    max-height: calc(100vh - var(--header-h) - 44px);
    overflow: auto;
    overscroll-behavior: contain;
}

.sidebar {
    padding-right: 8px;
}

.sidebar-title,
.toc-title {
    margin: 0 0 12px;
    color: var(--faint);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

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

.nav-list .nav-list {
    margin: 2px 0 6px 11px;
    padding-left: 11px;
    border-left: 1px solid var(--border);
}

.nav-sections {
    margin-top: 0;
    margin-bottom: 8px;
}

.nav-link,
.toc-link {
    position: relative;
    display: block;
    color: var(--muted);
    line-height: 1.4;
    transition: color 110ms ease, background 110ms ease;
}

.nav-link {
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.nav-section {
    padding-top: 5px;
    padding-bottom: 5px;
    font-size: 13px;
}

.nav-link:hover,
.toc-link:hover {
    color: var(--text-strong);
    text-decoration: none;
}

.nav-link:hover {
    background: var(--panel-soft);
}

.nav-link.is-active,
.nav-link.is-current {
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-weight: 600;
}

/* Accent rail on the active page / current section. */
.nav-link.is-active::before,
.nav-link.is-current::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: var(--accent);
}

.toc-link {
    padding: 5px 0 5px 12px;
    border-left: 2px solid transparent;
    font-size: 13px;
}

.toc-link.is-current {
    border-left-color: var(--accent);
    color: var(--accent-strong);
    font-weight: 600;
}

/* === Content ============================================================== */

.content {
    min-width: 0;
    padding: 0 0 24px;
}

.doc-content,
.doc-page {
    max-width: var(--measure);
}

.doc-content > :first-child,
.doc-page > :first-child {
    margin-top: 0;
}

.doc-page {
    padding-bottom: 48px;
    margin-bottom: 48px;
    border-bottom: 1px solid var(--border);
}

.doc-page:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: 0;
}

h1,
h2,
h3,
h4 {
    color: var(--text-strong);
    line-height: 1.22;
    letter-spacing: -0.015em;
}

h1 {
    margin: 0 0 22px;
    font-size: 2.4rem;
    font-weight: 700;
}

h2 {
    margin: 52px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    font-size: 1.6rem;
    font-weight: 700;
}

h3 {
    margin: 34px 0 12px;
    font-size: 1.25rem;
    font-weight: 600;
}

h4 {
    margin: 26px 0 10px;
    font-size: 1.05rem;
    font-weight: 600;
}

p,
ul,
ol,
table,
blockquote,
pre {
    margin-top: 0;
    margin-bottom: 18px;
}

ul,
ol {
    padding-left: 26px;
}

li::marker {
    color: var(--faint);
}

li + li {
    margin-top: 5px;
}

li > ul,
li > ol {
    margin-top: 5px;
    margin-bottom: 0;
}

strong {
    color: var(--text-strong);
    font-weight: 600;
}

blockquote {
    padding: 12px 16px;
    border-left: 3px solid var(--accent-line);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: var(--panel-soft);
    color: var(--text);
}

blockquote > :last-child {
    margin-bottom: 0;
}

/* GitHub-style callouts: a per-type accent colour drives the border, the
   bold label, and a faint tinted background. */
.alert {
    --alert: var(--accent);
    border-left: 3px solid var(--alert);
    background: color-mix(in srgb, var(--alert) 7%, var(--panel));
}

.alert::before {
    display: block;
    margin-bottom: 6px;
    content: attr(data-alert);
    color: var(--alert);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 0.01em;
}

.alert-note,
.alert-important {
    --alert: var(--accent);
}

.alert-tip {
    --alert: var(--good);
}

.alert-warning {
    --alert: var(--warn);
}

.alert-caution {
    --alert: var(--bad);
}

/* === Tables =============================================================== */

table {
    display: block;
    width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
    font-size: 14.5px;
}

th,
td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

th {
    border-bottom: 2px solid var(--border-strong);
    color: var(--text-strong);
    font-weight: 600;
    white-space: nowrap;
}

tbody tr:last-child td {
    border-bottom: 0;
}

tbody tr:hover {
    background: var(--panel-softer);
}

/* === Code ================================================================= */

code {
    padding: 2px 6px;
    border-radius: 5px;
    background: var(--panel-soft);
    border: 1px solid var(--border);
    color: var(--text-strong);
    font-family: ui-monospace, "SF Mono", SFMono-Regular, "Cascadia Code", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 0.88em;
}

a code {
    color: inherit;
}

pre {
    overflow: auto;
    padding: 16px 18px;
    border-radius: var(--radius);
    background: var(--code-bg);
    color: var(--code-text);
}

pre code {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font-size: 13.5px;
    line-height: 1.6;
}

.shiki {
    border: 1px solid var(--border);
}

.shiki span {
    font-style: var(--shiki-light-font-style);
    font-weight: var(--shiki-light-font-weight);
    text-decoration: var(--shiki-light-text-decoration);
}

:root[data-theme="dark"] .shiki {
    background-color: var(--shiki-dark-bg) !important;
    color: var(--shiki-dark) !important;
}

:root[data-theme="dark"] .shiki span {
    color: var(--shiki-dark) !important;
    font-style: var(--shiki-dark-font-style) !important;
    font-weight: var(--shiki-dark-font-weight) !important;
    text-decoration: var(--shiki-dark-text-decoration) !important;
}

.code-block {
    position: relative;
    margin-bottom: 18px;
}

.code-block pre {
    margin-bottom: 0;
}

.code-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background: color-mix(in srgb, var(--panel) 90%, transparent);
    color: var(--text);
    font: inherit;
    font-size: 12px;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: opacity 120ms ease, border-color 120ms ease, color 120ms ease;
}

.code-block:hover .code-copy,
.code-copy:focus-visible {
    opacity: 1;
}

.code-copy:hover {
    border-color: var(--accent);
    color: var(--accent-strong);
}

/* === Mermaid ============================================================== */

pre.mermaid {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel-softer);
    color: var(--text);
    text-align: center;
    overflow-x: auto;
}

pre.mermaid svg {
    max-width: 100%;
    height: auto;
}

/* === Header anchors ======================================================= */

.header-anchor {
    color: inherit;
    text-decoration: none;
}

.header-anchor:hover {
    text-decoration: none;
}

/* Reveal a faint ¶-style marker on heading hover without shifting layout. */
h2:hover .header-anchor::after,
h3:hover .header-anchor::after,
h4:hover .header-anchor::after {
    content: "#";
    margin-left: 0.4em;
    color: var(--accent);
    font-weight: 600;
}

/* === Rules / pager ======================================================== */

hr {
    height: 1px;
    margin: 36px 0;
    border: 0;
    background: var(--border);
}

.page-pager {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    max-width: var(--measure);
    margin-top: 52px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.page-pager-link {
    display: block;
    min-height: 80px;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    color: var(--text);
    box-shadow: var(--shadow-sm);
    transition: border-color 130ms ease, transform 130ms ease, box-shadow 130ms ease;
}

.page-pager-link:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.page-pager-next {
    text-align: right;
}

.page-pager-label,
.page-pager-title {
    display: block;
}

.page-pager-label {
    margin-bottom: 5px;
    color: var(--muted);
    font-size: 12.5px;
    font-weight: 600;
}

.page-pager-prev .page-pager-label::before {
    content: "← ";
    color: var(--accent);
}

.page-pager-next .page-pager-label::after {
    content: " →";
    color: var(--accent);
}

.page-pager-title {
    color: var(--text-strong);
    font-weight: 600;
    line-height: 1.35;
}

/* === Responsive =========================================================== */

@media (max-width: 1100px) {
    .docs-shell {
        grid-template-columns: minmax(200px, 250px) minmax(0, 1fr);
        gap: 32px;
    }

    .toc {
        display: none;
    }
}

@media (max-width: 760px) {
    :root {
        /* Header wraps to two rows here (actions + full-width search); keep a
           length so the scroll-padding/scroll-margin calc()s stay valid. */
        --header-h: 104px;
    }

    .site-header {
        position: sticky;
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 16px;
    }

    .search {
        order: 3;
        flex-basis: 100%;
        max-width: none;
    }

    .docs-shell {
        display: block;
        padding: 20px 16px 48px;
    }

    .sidebar {
        position: static;
        max-height: 42vh;
        margin-bottom: 28px;
        padding: 0 0 18px;
        border-bottom: 1px solid var(--border);
    }

    h1 {
        font-size: 1.95rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    .page-pager {
        grid-template-columns: 1fr;
    }

    .page-pager-next {
        text-align: left;
    }

    .page-pager-next .page-pager-label::after {
        content: none;
    }

    .page-pager-next .page-pager-label::before {
        content: "→ ";
        color: var(--accent);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        scroll-behavior: auto !important;
    }
}