/* The design kit every app screen gets: plain HTML styled to sit inside a native shell. */
:root {
  color-scheme: light dark;
  --bg: #f2f2f7;
  --card: #ffffff;
  --text: #000000;
  --muted: #6c6c70;
  --faint: #c6c6c8;
  --line: rgba(60, 60, 67, 0.18);
  --danger: #ff3b30;
  --radius: 12px;
  font: 17px/1.35 -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --card: #1c1c1e; --text: #ffffff; --muted: #98989f; --faint: #48484a; --line: rgba(84, 84, 88, 0.6); --danger: #ff453a; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { padding: 8px 16px calc(96px + env(safe-area-inset-bottom)); max-width: 760px; margin: 0 auto; }
a { color: var(--accent); text-decoration: none; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

h2.section { font-size: 13px; font-weight: 400; text-transform: none; color: var(--muted); margin: 24px 16px 6px; }
/* At most one short line under a list, where it truly helps. */
.footer { font-size: 13px; color: var(--muted); margin: 6px 16px 0; }
/* A screen's own large title, as iOS draws one at the top of a page (one.largeTitle). */
.large-title { font-size: 34px; font-weight: 700; letter-spacing: 0.01em; margin: 6px 4px 10px; line-height: 1.15; }

.list { background: var(--card); border-radius: var(--radius); overflow: hidden; }
.row { display: flex; gap: 12px; align-items: center; padding: 11px 16px; position: relative; color: inherit; cursor: default; }
.row + .row::before { content: ""; position: absolute; top: 0; left: 64px; right: 0; border-top: 0.5px solid var(--line); }
.row.plain + .row.plain::before { left: 16px; }
.row:active { background: var(--line); }
.row .main { flex: 1; min-width: 0; }
.row .title { font-weight: 600; display: flex; justify-content: space-between; gap: 8px; }
/* A plain row is a setting or a fact, as in iOS's Settings: its title in the regular weight. */
.row.plain .title { font-weight: 400; }
.row .title > span:first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .title .when { font-weight: 400; color: var(--muted); font-size: 15px; white-space: nowrap; }
/* A row says one line under its title, cut short with an ellipsis: the rest goes on the item's own page. .wrap lets
   it run on, for the few that must (an error, a post). */
.row .sub { color: var(--muted); font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .sub.wrap { white-space: normal; overflow-wrap: anywhere; }
.row .chev { color: var(--faint); font-size: 20px; }
.row.dim .main, .row.dim .app-icon { opacity: 0.4; }
.row .note { color: var(--muted); font-size: 15px; white-space: nowrap; flex: none; }

.icon { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; flex: none; font-weight: 600; font-size: 15px; color: white; background: var(--accent); }
.icon.grey { background: var(--faint); color: var(--text); }
/* An app's icon, from one.appIcon: a shell draws its tile in; a browser shows its picture, or its first letter. */
.app-icon { --size: 36px; --tile: var(--accent); width: var(--size); height: var(--size); border-radius: calc(var(--size) * 0.225); display: grid; place-items: center; flex: none; font-weight: 600; font-size: calc(var(--size) * 0.42); color: white; background: linear-gradient(color-mix(in srgb, var(--tile) 80%, white), var(--tile)); background-size: cover; }
.app-icon.drawn { color: transparent; }
/* A logo drawn on white in a browser gets the hairline edge a shell gives it. */
.app-icon.logo { background-color: #fff; background-size: 80%; background-repeat: no-repeat; background-position: center; box-shadow: inset 0 0 0 0.5px rgba(0, 0, 0, 0.12); }
.search { width: 100%; font: inherit; padding: 8px 12px; margin: 4px 0 4px; border-radius: 10px; border: 0; background: var(--line); color: var(--text); outline: none; }
.avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; flex: none; font-size: 13px; font-weight: 600; color: white; }

.feed { display: flex; flex-direction: column; gap: 18px; padding-top: 8px; }
.post { display: flex; gap: 10px; align-items: flex-start; }
.post .who { font-weight: 600; font-size: 15px; }
.post .who .when { font-weight: 400; color: var(--muted); margin-left: 6px; }
.post .text { margin-top: 2px; overflow-wrap: anywhere; }
.post.more { margin-top: -12px; padding-left: 44px; }
.day { text-align: center; color: var(--muted); font-size: 13px; font-weight: 600; margin: 8px 0 -6px; }

.composer { position: fixed; left: 0; right: 0; bottom: 0; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: color-mix(in srgb, var(--bg) 85%, transparent); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); }
.composer form { display: flex; gap: 8px; max-width: 760px; margin: 0 auto; }
.composer input { flex: 1; min-width: 0; font: inherit; padding: 9px 14px; border-radius: 20px; border: 0.5px solid var(--line); background: var(--card); color: var(--text); outline: none; }
.composer input:focus { border-color: var(--accent); }
.composer button { flex: none; width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--accent); color: white; font-size: 18px; }
.composer button:disabled { background: var(--faint); }
.composer .error { color: var(--danger); font-size: 13px; max-width: 760px; margin: 0 auto 6px; padding: 0 6px; }

/* A segmented control, for an app's own pickers (which scope, which view): buttons in a .segmented, the chosen one .on. */
.segmented { display: flex; padding: 2px; gap: 2px; border-radius: 9px; background: var(--line); margin: 8px 0 12px; }
.segmented button { flex: 1; font: inherit; font-size: 13px; font-weight: 500; padding: 6px 10px; border: 0; border-radius: 7px; background: none; color: var(--text); }
.segmented button.on { background: var(--card); font-weight: 600; box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 3px 1px rgba(0, 0, 0, 0.04); }
@media (prefers-color-scheme: dark) { .segmented button.on { background: #636366; } }

/* An on/off switch, as iOS draws one: <input type="checkbox" class="switch">. */
.switch { appearance: none; -webkit-appearance: none; flex: none; width: 51px; height: 31px; margin: 0; border-radius: 16px; background: var(--line); position: relative; transition: background 0.2s; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 27px; height: 27px; border-radius: 50%; background: #fff; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2); transition: transform 0.2s; }
.switch:checked { background: #34c759; }
.switch:checked::after { transform: translateX(20px); }
.switch:disabled { opacity: 0.5; }

.empty { text-align: center; color: var(--muted); padding: 48px 24px; }
.error { color: var(--danger); }

/* The kit's pieces (kit.js, markdown.js, code.js): each styled only where a screen uses it. */
:root { --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; --code-bg: rgba(118, 118, 128, 0.12); --ok: #34c759; }
@media (prefers-color-scheme: dark) { :root { --code-bg: rgba(118, 118, 128, 0.24); --ok: #30d158; } }
.i { width: 1.1em; height: 1.1em; flex: none; vertical-align: -0.18em; }

.button { font: inherit; font-size: 15px; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 14px; border-radius: 10px; border: 0; background: var(--line); color: var(--accent); cursor: pointer; white-space: nowrap; }
.button.primary { background: var(--accent); color: white; }
.button.danger { background: var(--danger); color: white; }
.button.plain { background: none; }
/* The App Store's GET: a small capsule, tinted, its word in bold. .filled for the one that matters most. */
.button.capsule { font-size: 15px; font-weight: 700; min-width: 76px; padding: 5px 16px; border-radius: 999px; background: var(--code-bg); color: var(--accent); }
.button.capsule.filled { background: var(--accent); color: white; }
.button:disabled { opacity: 0.6; }
.button:active { opacity: 0.7; }

.spinner { width: 20px; height: 20px; border-radius: 50%; border: 2.5px solid var(--line); border-top-color: var(--muted); animation: spin 0.8s linear infinite; flex: none; }
.spinner.small { width: 14px; height: 14px; border-width: 2px; border-top-color: currentColor; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading { display: flex; gap: 10px; align-items: center; justify-content: center; color: var(--muted); font-size: 15px; padding: 48px 16px; }

.empty-state { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; padding: 40px 24px; color: var(--muted); }
.empty-icon { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--line); margin-bottom: 6px; }
.empty-icon .i { width: 26px; height: 26px; }
.empty-title { font-weight: 600; color: var(--text); }
.empty-text { font-size: 15px; max-width: 34em; }
.empty-state .button { margin-top: 10px; }

.banner { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; margin: 8px 0; border-radius: var(--radius); background: color-mix(in srgb, var(--danger) 10%, var(--card)); border: 0.5px solid color-mix(in srgb, var(--danger) 35%, transparent); }
.banner-icon { color: var(--danger); width: 22px; height: 22px; margin-top: 1px; }
.banner-text { flex: 1; display: flex; flex-direction: column; gap: 2px; font-size: 15px; }
.banner-text span { color: var(--muted); }
.banner .button { align-self: center; }

.copy { font: inherit; font-size: 13px; display: inline-flex; align-items: center; gap: 4px; padding: 4px 8px; border-radius: 7px; border: 0; background: none; color: var(--muted); cursor: pointer; }
.copy:hover { background: var(--line); }
.copy.copied { color: var(--ok); }

.confirm { background: var(--card); border-radius: var(--radius); padding: 14px 16px; margin: 8px 0; border: 0.5px solid var(--line); }
.confirm-title { font-weight: 600; }
.confirm-detail { color: var(--muted); font-size: 15px; margin-top: 4px; }
.confirm-error { color: var(--danger); font-size: 13px; margin-top: 6px; }
.confirm-error:empty { display: none; }
.confirm-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }

.search { display: flex; align-items: center; gap: 6px; padding: 0 8px; height: 36px; border-radius: 10px; background: var(--code-bg); color: var(--muted); }
.search input { flex: 1; min-width: 0; font: inherit; font-size: 16px; border: 0; outline: none; background: none; color: var(--text); padding: 0; }
.search input::-webkit-search-cancel-button { display: none; }
.search .clear { border: 0; background: var(--faint); color: var(--card); width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center; padding: 0; cursor: pointer; }
.search .clear[hidden] { display: none; }
.search .clear .i { width: 11px; height: 11px; }

/* Markdown, the way GitHub draws it. */
.md { overflow-wrap: break-word; font-size: 16px; line-height: 1.5; }
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p, .md blockquote, .md ul, .md ol, .md .md-table, .md .md-code, .md .mermaid, .md .md-alert { margin: 0 0 14px; }
.md h1, .md h2, .md h3, .md h4, .md h5, .md h6 { margin: 22px 0 12px; font-weight: 600; line-height: 1.25; }
.md h1 { font-size: 1.85em; padding-bottom: 0.3em; border-bottom: 0.5px solid var(--line); }
.md h2 { font-size: 1.45em; padding-bottom: 0.3em; border-bottom: 0.5px solid var(--line); }
.md h3 { font-size: 1.2em; }
.md h4 { font-size: 1em; }
.md h5, .md h6 { font-size: 0.9em; color: var(--muted); }
.md ul, .md ol { padding-left: 2em; }
.md li + li { margin-top: 0.25em; }
.md li > ul, .md li > ol { margin: 0.25em 0 0; }
.md li.task { list-style: none; margin-left: -1.5em; }
.md li.task input { margin: 0 0.3em 0.2em 0; vertical-align: middle; }
.md code { font: 0.86em var(--mono); background: var(--code-bg); padding: 0.15em 0.4em; border-radius: 6px; }
.md pre { margin: 0; padding: 14px 16px; overflow-x: auto; background: var(--code-bg); border-radius: 10px; font: 13px/1.45 var(--mono); }
.md pre code { background: none; padding: 0; font: inherit; }
.md-code { position: relative; }
.md-code .md-copy { position: absolute; top: 6px; right: 6px; background: var(--card); opacity: 0.9; }
.md blockquote { padding: 0 1em; color: var(--muted); border-left: 0.25em solid var(--faint); }
.md hr { height: 0.25em; border: 0; background: var(--line); margin: 24px 0; }
.md-table { overflow-x: auto; }
.md table { border-collapse: collapse; font-size: 15px; }
.md th, .md td { border: 0.5px solid var(--faint); padding: 6px 13px; }
.md th { font-weight: 600; }
.md tr:nth-child(2n) td { background: color-mix(in srgb, var(--code-bg) 50%, transparent); }
.md a { color: var(--accent); }
.md a:hover { text-decoration: underline; }
.md img { max-width: 100%; }
.md-alert { padding: 8px 16px; border-left: 0.25em solid var(--c); --c: #0969da; }
.md-alert-title { color: var(--c); font-weight: 600; margin: 0 0 4px !important; }
.md-alert.tip { --c: #1a7f37; } .md-alert.important { --c: #8250df; } .md-alert.warning { --c: #9a6700; } .md-alert.caution { --c: #cf222e; }
.mermaid { display: flex; justify-content: center; overflow-x: auto; }
.mermaid[data-drawn="1"] { padding: 12px; background: var(--card); border: 0.5px solid var(--line); border-radius: 10px; }
.mermaid > pre { width: 100%; }
.mermaid.failed { flex-direction: column; }
.mermaid.failed::after { content: "This diagram couldn't be drawn, so here is its code."; font-size: 13px; color: var(--muted); margin-top: 6px; }

/* Code, coloured as GitHub colours it. */
.hl-kw { color: #cf222e; } .hl-str { color: #0a3069; } .hl-com { color: #6e7781; font-style: italic; } .hl-num, .hl-lit, .hl-prop, .hl-attr, .hl-var { color: #0550ae; }
.hl-fn { color: #8250df; } .hl-type { color: #953800; } .hl-tag { color: #116329; } .hl-ins { color: #116329; } .hl-del { color: #82071e; } .hl-strong { font-weight: 600; }
@media (prefers-color-scheme: dark) {
  .hl-kw { color: #ff7b72; } .hl-str { color: #a5d6ff; } .hl-com { color: #8b949e; } .hl-num, .hl-lit, .hl-prop, .hl-attr, .hl-var { color: #79c0ff; }
  .hl-fn { color: #d2a8ff; } .hl-type { color: #ffa657; } .hl-tag { color: #7ee787; } .hl-ins { color: #7ee787; } .hl-del { color: #ffa198; }
}

/* The code viewer. */
.viewer { background: var(--card); border-radius: var(--radius); overflow: hidden; border: 0.5px solid var(--line); }
.viewer-bar { display: flex; align-items: center; gap: 8px; padding: 6px 8px 6px 14px; border-bottom: 0.5px solid var(--line); font: 12px var(--mono); color: var(--muted); flex-wrap: wrap; }
.viewer-info { flex: 1; white-space: nowrap; }
.viewer-tools { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.viewer-find { position: relative; width: 170px; margin-right: 4px; }
.viewer-find .search { height: 28px; border-radius: 7px; }
.viewer-find .search input { font-size: 13px; }
.viewer-find[data-count]:not([data-count=""])::after { content: attr(data-count); position: absolute; right: 30px; top: 7px; font-size: 11px; color: var(--muted); pointer-events: none; }
.tool { font: inherit; font-family: -apple-system, system-ui, sans-serif; font-size: 13px; display: inline-flex; align-items: center; gap: 4px; padding: 4px 8px; border-radius: 7px; border: 0; background: none; color: var(--muted); cursor: pointer; }
.tool:hover { background: var(--line); }
.tool[aria-pressed="true"] { color: var(--accent); }
.viewer-body { overflow-x: auto; }
.lines { border-collapse: collapse; font: 12.5px/1.6 var(--mono); width: 100%; tab-size: 4; }
.lines td { padding: 0; vertical-align: top; }
.ln { width: 1%; min-width: 3.2em; padding: 0 10px 0 12px !important; text-align: right; color: var(--faint); user-select: none; -webkit-user-select: none; }
.ln::before { content: attr(data-n); }
.lc { white-space: pre; padding-right: 16px !important; }
.wrap .lc { white-space: pre-wrap; overflow-wrap: anywhere; }
.lines tr.hit { background: color-mix(in srgb, #d4a72c 18%, transparent); }
.lines mark { background: #fae17d; color: inherit; border-radius: 2px; }
@media (prefers-color-scheme: dark) { .lines mark { background: #9e6a03; } }
@media (max-width: 600px) {
  .viewer-find { width: auto; flex: 1; min-width: 0; }
  .viewer-tools { width: 100%; min-width: 0; }
  .viewer-info { width: 100%; }
}

/* Information, as at the bottom of an App Store page: a label, and its value on the right (one.info). */
.info .row { padding-top: 12px; padding-bottom: 12px; }
.info .label { flex: none; color: var(--muted); }
.info .value { flex: 1; min-width: 0; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* A sheet over the screen, as iOS slides one up (one.sheet): a bar with its title and Done, then its content. */
.sheet-backdrop { position: fixed; inset: 0; z-index: 50; display: flex; align-items: flex-end; justify-content: center; background: rgba(0, 0, 0, 0.32); opacity: 0; transition: opacity 0.25s; }
.sheet-backdrop.open { opacity: 1; }
.sheet { --bg: var(--sheet-bg, #f2f2f7); width: 100%; max-width: 560px; max-height: 88vh; overflow-y: auto; background: var(--bg); border-radius: 14px 14px 0 0; padding: 0 16px calc(24px + env(safe-area-inset-bottom)); transform: translateY(100%); transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1); }
.sheet-backdrop.open .sheet { transform: none; }
.sheet-bar { position: sticky; top: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 14px 0 10px; background: var(--bg); z-index: 1; }
.sheet-bar::before { content: ""; position: absolute; top: 5px; left: 50%; width: 36px; height: 5px; margin-left: -18px; border-radius: 3px; background: var(--faint); }
.sheet-title { font-weight: 600; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sheet-bar .button { justify-self: end; padding-right: 0; }
.sheet .list { margin-top: 6px; }
@media (prefers-color-scheme: dark) { .sheet { --sheet-bg: #1c1c1e; --card: #2c2c2e; } }
@media (min-width: 600px) {
  .sheet-backdrop { align-items: center; }
  .sheet { border-radius: 14px; transform: translateY(24px) scale(0.98); }
  .sheet-bar::before { display: none; }
}