:root {
  color-scheme: dark;
  accent-color: #4da3ff;
  --bg: #000000;
  --panel: #0a1b3a;          /* solid header panel */
  --card: #050b16;
  --note-bg: #0a1730;
  --line: #16305a;
  --fg: #f4f8ff;
  --muted: #8ea6c9;
  --accent: #4da3ff;          /* the blues: light, base, strong */
  --accent-light: #8ec5ff;
  --accent-strong: #2f7de1;
  --accent-fg: #00101f;
  --tag-bg: #12315c;
  --tag-fg: #d6e8ff;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 Georgia, "Times New Roman", serif; }
a { color: var(--accent); }
a:hover { color: var(--accent-light); }
::selection { background: var(--accent-strong); color: #fff; }
:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 14px 16px; background: var(--panel); border-bottom: 3px solid var(--accent-strong); }
.brand { font-weight: bold; font-size: 1.15rem; letter-spacing: .04em; text-decoration: none; color: var(--fg); }
.brand:hover { color: var(--accent-light); }
.top nav a { color: var(--accent-light); text-decoration: none; font-size: .95rem; }
.top nav a:hover { color: #fff; text-decoration: underline; }
main { max-width: 44rem; margin: 0 auto; padding: 24px 16px 6rem; }
footer { max-width: 44rem; margin: 0 auto; padding: 16px 16px 5rem; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); }
h1 { font-size: 1.7rem; line-height: 1.25; margin: .2em 0 .4em; }
h2 { font-size: 1.05rem; margin: 1.6em 0 .5em; color: var(--accent); text-transform: uppercase; letter-spacing: .06em; }
.lede, .crumbs, .hint, .resume, .general { color: var(--muted); }
.kicker { margin: 1em 0 0; color: var(--accent); font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; }

.tree { list-style: none; padding: 0; margin: 0; }
.tree .tree { margin-left: 1.25rem; padding-left: .75rem; border-left: 2px solid var(--line); }
.tree li { margin: .6rem 0; }
.card { display: block; padding: .7rem 1rem; background: var(--card); border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--fg); }
.card:hover, .list a:hover { border-color: var(--accent); background: var(--note-bg); color: var(--fg); }
.card span { display: block; color: var(--muted); font-size: .9rem; }
.card small { color: var(--accent); }

input[type=search], input[type=text], select, textarea { font: inherit; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
input[type=search], input[type=text] { width: 100%; padding: .65rem .85rem; }
input[type=search]:focus, input[type=text]:focus, textarea:focus { outline: 2px solid var(--accent-strong); border-color: var(--accent); }

button { font: inherit; font-size: .85rem; padding: .3rem .8rem; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--fg); cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent-light); background: var(--note-bg); color: var(--accent-light); }
button:disabled { opacity: .45; cursor: default; }
button.primary, button[aria-pressed=true] { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
button.primary:hover:not(:disabled), button[aria-pressed=true]:hover { background: var(--accent-light); border-color: var(--accent-light); color: var(--accent-fg); }
button.danger { border-color: var(--accent-strong); }

.filters { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 0; }
.filters select { font-size: .85rem; padding: .3rem .7rem; border-radius: 999px; cursor: pointer; max-width: 100%; }
.filters select:hover { border-color: var(--accent-light); }

.list { list-style: none; padding: 0; margin: 0; display: grid; gap: .4rem; }
.list a { display: flex; flex-wrap: wrap; align-items: baseline; gap: .2rem .7rem; padding: .55rem .85rem; background: var(--card); border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--fg); }
.list .t { font-weight: bold; }
.list .s { color: var(--muted); font-size: .9rem; margin-right: auto; }
.tag { font-size: .72rem; padding: .05rem .5rem; border-radius: 999px; background: var(--note-bg); border: 1px solid var(--line); color: var(--muted); font-weight: normal; vertical-align: middle; }
.tag.warn { background: var(--tag-bg); border-color: var(--accent-strong); color: var(--tag-fg); }

.notice { padding: .5rem .85rem; border-radius: 8px; background: var(--note-bg); border-left: 3px solid var(--accent-strong); color: var(--muted); font-size: .9rem; }
.entry-body { margin: 1.2rem 0; }
.entry-body p { margin: 0 0 1em; }
.entry-body ul, .entry-body ol { margin: 0 0 1em; padding-left: 1.4rem; }
.entry-body blockquote { margin: 0 0 1em; padding-left: 1rem; border-left: 3px solid var(--accent-strong); color: var(--muted); }
.entry-body a.ext::after, .popover a.ext::after { content: " ↗"; font-size: .8em; }
code { font-size: .85em; color: var(--tag-fg); }
.meta { display: grid; grid-template-columns: max-content 1fr; gap: .2rem 1rem; margin: 1.5rem 0; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.meta dt { font-weight: bold; color: var(--accent); } .meta dd { margin: 0; }
.empty { color: var(--muted); }
.error { padding-left: .75rem; border-left: 3px solid var(--accent); }

/* glossary words and their pop-up */
.term { padding: 0; border: 0; border-bottom: 1px dotted var(--accent); border-radius: 0; background: none; font: inherit; color: inherit; cursor: help; }
.term:hover:not(:disabled) { background: none; border-color: var(--accent-light); color: var(--accent-light); }
.popover { position: absolute; z-index: 60; padding: .8rem 1rem; background: var(--card); border: 1px solid var(--accent-strong); border-radius: 10px; box-shadow: 0 10px 34px rgba(0, 0, 0, .85); font-size: .92rem; line-height: 1.5; }
.popover strong { color: var(--accent-light); }
.popover p { margin: .3rem 0; }
.popover .links { display: flex; flex-wrap: wrap; gap: .3rem 1rem; margin-top: .6rem; font-size: .85rem; }

/* suggest-edits mode */
.fab { position: fixed; right: 16px; bottom: 16px; z-index: 40; padding: .55rem 1.05rem; border-radius: 999px; background: var(--accent-strong); color: #fff; font: 600 .85rem/1.2 system-ui, sans-serif; text-decoration: none; box-shadow: 0 6px 22px rgba(0, 0, 0, .8); }
.fab:hover { background: var(--accent); color: var(--accent-fg); }
.help { margin: .8rem 0; color: var(--muted); font-size: .9rem; }
.help summary { cursor: pointer; color: var(--accent-light); }
.editor-bar { position: sticky; top: 0; z-index: 30; display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; padding: .6rem 0; background: var(--bg); border-bottom: 1px solid var(--line); }
.editor-bar input[type=search] { flex: 1 1 11rem; width: auto; padding: .4rem .75rem; }
.editor-bar select { padding: .4rem .6rem; }
.check { display: inline-flex; align-items: center; gap: .3rem; color: var(--muted); font-size: .9rem; }
.count { color: var(--accent-light); font-size: .9rem; }
.panel { margin: .8rem 0; padding: 0 1rem 1rem; background: var(--card); border: 1px solid var(--accent-strong); border-radius: 10px; }
.panel textarea { width: 100%; padding: .6rem; font: .8rem/1.4 ui-monospace, Consolas, monospace; }
.field { display: block; margin: .6rem 0; color: var(--muted); font-size: .9rem; }
.field input { margin-top: .25rem; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: .5rem 0; }
.edit-group { margin: .6rem 0; background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
.edit-group > summary { padding: .6rem .9rem; cursor: pointer; font-weight: bold; color: var(--accent-light); }
.edit-group[open] > summary { border-bottom: 1px solid var(--line); }
.edit-group > div { padding: .8rem .9rem 0; }
.edit-card { margin: 0 0 1.4rem; padding-left: .8rem; border-left: 3px solid var(--line); }
.edit-card.edited { border-left-color: var(--accent); }
.edit-card header { display: flex; flex-wrap: wrap; align-items: baseline; gap: .2rem .7rem; margin-bottom: .3rem; }
.edit-card header .s { color: var(--muted); font-size: .9rem; margin-right: auto; }
.edit-card textarea { display: block; width: 100%; min-height: 6rem; padding: .6rem .75rem; font-size: .95rem; line-height: 1.5; resize: vertical; background: var(--bg); }
.preview { padding: .4rem .9rem; margin: .4rem 0 0; background: var(--note-bg); border-radius: 8px; }