/* Dialogify documentation site
   Light and dark are both defined as custom properties on :root, so switching
   the theme never has to touch a single rule. */

:root {
    --bg: #ffffff;
    --bg-soft: #f6f8fa;
    --bg-inset: #f0f3f6;
    --text: #1f2328;
    --text-muted: #59636e;
    --border: #d8dee4;
    --border-soft: #eaeef2;
    --accent: #117e96;
    --accent-strong: #0d6377;
    --accent-hover: #0d6377;
    --accent-soft: rgba(17, 126, 150, 0.1);
    --btn-bg: #eef1f4;
    --btn-hover-bg: #e2e7ec;
    --btn-text: #1f2328;
    --warn-border: #e8a33d;
    --warn-bg: rgba(232, 163, 61, 0.1);
    --shadow: 0 1px 3px rgba(31, 35, 40, 0.08);
    --shadow-lg: 0 8px 24px rgba(31, 35, 40, 0.12);
    --topbar-height: 56px;
    --sidebar-width: 260px;
    --toc-width: 220px;
    --radius: 8px;
    --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
    color-scheme: light;
}

:root[data-theme='dark'] {
    --bg: #0d1117;
    --bg-soft: #161b22;
    --bg-inset: #1c2129;
    --text: #e6edf3;
    --text-muted: #9198a1;
    --border: #30363d;
    --border-soft: #21262d;
    --accent: #4fb8cf;
    --accent-strong: #7fd3e4;
    --accent-hover: #7fd3e4;
    --accent-soft: rgba(79, 184, 207, 0.14);
    --btn-bg: #21262d;
    --btn-hover-bg: #2b323b;
    --btn-text: #e6edf3;
    --warn-border: #d29922;
    --warn-bg: rgba(210, 153, 34, 0.12);
    --shadow: 0 1px 3px rgba(1, 4, 9, 0.5);
    --shadow-lg: 0 8px 24px rgba(1, 4, 9, 0.6);
    color-scheme: dark;
}

/* data-theme="auto" hands the decision to the system, matching the way the
   dialog stylesheet itself treats the attribute. */
@media (prefers-color-scheme: dark) {
    :root[data-theme='auto'] {
        --bg: #0d1117;
        --bg-soft: #161b22;
        --bg-inset: #1c2129;
        --text: #e6edf3;
        --text-muted: #9198a1;
        --border: #30363d;
        --border-soft: #21262d;
        --accent: #4fb8cf;
        --accent-strong: #7fd3e4;
        --accent-hover: #7fd3e4;
        --accent-soft: rgba(79, 184, 207, 0.14);
        --btn-bg: #21262d;
        --btn-hover-bg: #2b323b;
        --btn-text: #e6edf3;
        --warn-border: #d29922;
        --warn-bg: rgba(210, 153, 34, 0.12);
        --shadow: 0 1px 3px rgba(1, 4, 9, 0.5);
        --shadow-lg: 0 8px 24px rgba(1, 4, 9, 0.6);
        color-scheme: dark;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* the sticky header must not cover the target of an anchor jump */
    scroll-padding-top: calc(var(--topbar-height) + 16px);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', 'PingFang TC',
        'Microsoft JhengHei', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    text-decoration: underline;
}

:where(a, button, input, summary):focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 3px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 8px;
    z-index: 60;
    padding: 8px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.skip-link:focus {
    top: 8px;
}

/* --- top bar ---------------------------------------------------------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--topbar-height);
    padding: 0 16px;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-soft);
}

.topbar__brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 17px;
    color: var(--text);
}

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

.badge {
    padding: 1px 7px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
}

.topbar__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.gh-buttons {
    display: flex;
    align-items: center;
    /* the injected iframe carries its own baseline */
    line-height: 0;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    cursor: pointer;
}

.icon-button:hover {
    background: var(--bg-soft);
}

/* The sidebar is permanently open at this width, so the button would do
   nothing. Declared after .icon-button, which would otherwise win on order. */
.topbar__menu {
    display: none;
}

.icon-button svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
}

/* Only the icon for the mode in force is shown. This is done in CSS rather
   than with the hidden attribute, which does nothing on an SVG element: the
   [hidden] rule lives in the HTML UA stylesheet and is namespaced to HTML. */
[data-theme-icon] {
    display: none;
}

:root[data-theme='light'] [data-theme-icon='light'],
:root[data-theme='dark'] [data-theme-icon='dark'],
:root[data-theme='auto'] [data-theme-icon='auto'] {
    display: block;
}

.segmented {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.segmented button {
    padding: 5px 10px;
    min-width: 38px;
    background: none;
    border: none;
    color: var(--text-muted);
    font: inherit;
    font-size: 13px;
    cursor: pointer;
}

.segmented button:hover {
    background: var(--bg-soft);
}

.segmented button[aria-pressed='true'] {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

/* --- layout ----------------------------------------------------------- */

.layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--toc-width);
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.sidebar,
.toc {
    position: sticky;
    top: var(--topbar-height);
    align-self: start;
    max-height: calc(100vh - var(--topbar-height));
    overflow-y: auto;
    /* overflow-y alone makes overflow-x compute to auto, which would clip the
       focus ring of the filter box against the sides. */
    padding: 24px 3px 48px;
    font-size: 14px;
}

.sidebar__filter:focus-visible,
.sidebar__filter:focus {
    outline: 2px solid var(--accent);
    outline-offset: 0;
    border-color: var(--accent);
}

.sidebar__filter {
    width: 100%;
    margin-bottom: 12px;
    padding: 6px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font: inherit;
    font-size: 14px;
}

.sidebar__list {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: section;
}

.sidebar__list > li > a {
    counter-increment: section;
}

.sidebar__list > li > a::before {
    content: counter(section) '.';
    display: inline-block;
    width: 1.6em;
    color: var(--text-muted);
}

.sidebar a,
.toc a {
    display: block;
    padding: 4px 10px;
    border-radius: 6px;
    color: var(--text-muted);
    line-height: 1.5;
}

.sidebar a:hover,
.toc a:hover {
    background: var(--bg-soft);
    color: var(--text);
    text-decoration: none;
}

.sidebar a[aria-current],
.toc a[aria-current] {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

.sidebar__sub {
    margin: 0 0 4px 1.6em;
    padding: 0;
    list-style: none;
}

.sidebar__sub a {
    font-size: 13px;
}

.sidebar__empty {
    color: var(--text-muted);
    font-size: 13px;
}

.toc__title {
    margin: 0 0 6px;
    padding: 0 10px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

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

.content {
    min-width: 0;
    padding: 8px 0 80px;
}

/* --- typography ------------------------------------------------------- */

.content section {
    padding-top: 24px;
    border-top: 1px solid var(--border-soft);
    margin-top: 40px;
}

.content section:first-of-type {
    border-top: none;
    margin-top: 0;
}

h1 {
    margin: 0 0 8px;
    font-size: 40px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h2 {
    margin: 0 0 20px;
    font-size: 27px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

h3 {
    margin: 36px 0 12px;
    font-size: 19px;
    line-height: 1.4;
}

h2,
h3 {
    scroll-margin-top: calc(var(--topbar-height) + 16px);
}

p,
ul,
ol {
    margin: 0 0 14px;
}

li {
    margin-bottom: 6px;
}

kbd {
    padding: 1px 5px;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
}

:not(pre) > code {
    padding: 0.15em 0.4em;
    background: var(--bg-inset);
    border-radius: 5px;
    font-family: var(--mono);
    font-size: 0.87em;
}

.hero {
    padding-top: 40px;
}

.hero__lead {
    max-width: 62ch;
    font-size: 18px;
    color: var(--text-muted);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

/* --- code ------------------------------------------------------------- */

pre {
    position: relative;
    margin: 0 0 16px;
    padding: 16px;
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    overflow-x: auto;
}

pre code {
    font-family: var(--mono);
    font-size: 13.5px;
    line-height: 1.6;
    background: none;
    padding: 0;
}

.copy-button {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 3px 9px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 120ms;
}

pre:hover .copy-button,
.copy-button:focus-visible {
    opacity: 1;
}

.copy-button[data-copied] {
    color: var(--accent);
    border-color: var(--accent);
}

/* --- demos, callouts, tables ------------------------------------------ */

.demo {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 12px;
    padding: 16px;
    background: var(--bg-soft);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

/* dialogify scopes its own .btn rules under .dialogify, so the triggers that
   live on the page need their own copy of the look. */
.btn {
    display: inline-block;
    box-sizing: border-box;
    border: 1px solid transparent;
    border-radius: 3px;
    padding: 7px 14px;
    font: inherit;
    font-size: 14px;
    line-height: 1.5;
    letter-spacing: 0.5px;
    text-decoration: none;
    cursor: pointer;
    background: var(--btn-bg);
    color: var(--btn-text);
    transition:
        background-color 0.15s ease,
        color 0.15s ease;
}

.btn:hover {
    background: var(--btn-hover-bg);
    color: var(--btn-text);
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
}

.callout {
    margin: 0 0 16px;
    padding: 12px 16px;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.callout--warn {
    background: var(--warn-bg);
    border-left-color: var(--warn-border);
}

.callout p:last-child {
    margin-bottom: 0;
}

.table-wrap {
    margin: 0 0 16px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th,
td {
    padding: 8px 14px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border-soft);
}

th {
    background: var(--bg-soft);
    font-weight: 600;
    white-space: nowrap;
}

tbody tr:last-child td {
    border-bottom: none;
}

.tokens summary {
    cursor: pointer;
    color: var(--accent);
}

.tokens[open] summary {
    margin-bottom: 12px;
}

.swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-right: 6px;
    vertical-align: -1px;
    border: 1px solid var(--border);
    border-radius: 3px;
}

.footer {
    padding: 24px;
    border-top: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
}

/* --- responsive ------------------------------------------------------- */

@media (max-width: 1180px) {
    .layout {
        grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    }

    .toc {
        display: none;
    }
}

@media (max-width: 860px) {
    .layout {
        grid-template-columns: minmax(0, 1fr);
        padding: 0 16px;
    }

    .topbar__menu {
        display: inline-flex;
    }

    .sidebar {
        position: fixed;
        top: var(--topbar-height);
        left: 0;
        bottom: 0;
        z-index: 30;
        width: min(84vw, var(--sidebar-width));
        max-height: none;
        padding: 16px;
        background: var(--bg);
        border-right: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 180ms ease;
    }

    .sidebar[data-open] {
        transform: none;
    }

    h1 {
        font-size: 32px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .sidebar {
        transition: none;
    }
}