:root {
  --bg: #f6f6f7;
  --card: #ffffff;
  --text: #18181b;
  --muted: #71717a;
  --line: #e4e4e7;
  --accent: #16a34a;
  --accent-soft: #dcfce7;
  --danger: #dc2626;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --card: #1c1c1f;
    --text: #f4f4f5;
    --muted: #a1a1aa;
    --line: #2e2e33;
    --accent: #22c55e;
    --accent-soft: #14361f;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: inherit; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 1.75rem 0 .6rem; }
h3 { font-size: 1rem; margin: 1.25rem 0 .5rem; color: var(--muted); }

/* шапка */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1rem;
  padding: .5rem 1rem;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.top nav { display: flex; gap: .25rem; overflow-x: auto; flex: 1; scrollbar-width: none; }
.top nav::-webkit-scrollbar { display: none; }
.top nav a {
  padding: .35rem .7rem; border-radius: 8px;
  text-decoration: none; color: var(--muted); white-space: nowrap;
}
.top nav a.on { background: var(--accent-soft); color: var(--text); font-weight: 600; }

main { max-width: 760px; margin: 0 auto; padding: 1.25rem 1rem 4rem; }

/* формы */
input, textarea, select, button { font: inherit; color: inherit; }
input:not([type=range]), textarea, select {
  width: 100%;
  padding: .5rem .65rem;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--card);
}
button {
  padding: .5rem .9rem;
  border: 0; border-radius: 8px;
  background: var(--text); color: var(--bg);
  cursor: pointer;
}
button.link { background: none; color: var(--muted); padding: .25rem 0; text-decoration: underline; }
button.danger, .danger { color: var(--danger); }

.stack { display: grid; gap: .75rem; margin: .75rem 0; }
.stack label { display: grid; gap: .25rem; font-size: .9rem; color: var(--muted); }
.stack button { justify-self: start; }
.inline { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin: .6rem 0; }
.inline input:not([type=range]), .inline textarea { flex: 1 1 12rem; width: auto; }
.inline input[type=date] { flex: 0 1 10rem; }
.inline select { width: auto; }

details > summary { cursor: pointer; color: var(--muted); padding: .35rem 0; }
details.new { margin-bottom: 1rem; }
details.new > summary { color: var(--accent); font-weight: 600; }
details.manage { border-top: 1px solid var(--line); padding: .25rem 0; }
details.manage > summary { color: var(--text); }

/* карточки и списки */
.cards, .list, .notes { list-style: none; margin: 0; padding: 0; }
.cards { display: grid; gap: .75rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: .9rem 1rem;
}
.card .title { font-weight: 600; text-decoration: none; }
.muted { opacity: .6; }

.row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.row h1 { margin: 0; }

.item {
  display: flex; align-items: center; gap: .75rem;
  padding: .55rem 0;
  border-bottom: 1px solid var(--line);
}
.list .item:last-child { border-bottom: 0; }
.item .title { flex: 1; }
.item.done .title { color: var(--muted); text-decoration: line-through; }
.card .item.next { border: 0; padding-bottom: 0; }

.check {
  flex: none;
  width: 1.9rem; height: 1.9rem; padding: 0;
  border: 2px solid var(--line); border-radius: 50%;
  background: transparent; color: #fff;
  font-weight: 700; line-height: 1;
}
.check:hover { border-color: var(--accent); }
.done > .check { background: var(--accent); border-color: var(--accent); }

.x { background: none; color: var(--muted); padding: 0 .3rem; font-size: 1.2rem; }
.x:hover { color: var(--danger); }

.meta { color: var(--muted); font-size: .85rem; }
.note { margin: .25rem 0; }
.empty { color: var(--muted); }
.ok { color: var(--accent); font-weight: 600; }
.err { color: var(--danger); }

.badge {
  font-size: .75rem; padding: .1rem .5rem;
  border-radius: 99px; background: var(--line); color: var(--muted);
}
.badge.active { background: var(--accent-soft); color: var(--accent); }

.bar { height: 6px; margin: .5rem 0 .3rem; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 99px; }

.notes li { display: flex; gap: .5rem; align-items: baseline; padding: .35rem 0; border-bottom: 1px solid var(--line); }
.notes .text { flex: 1; white-space: pre-wrap; }
.review { white-space: pre-wrap; margin-top: .5rem; }

/* вход и безопасность */
body.auth { display: grid; place-items: center; min-height: 100vh; }
.auth-box { width: min(340px, calc(100vw - 32px)); }
.auth-box h1 { margin: 0; }
.auth-box button { justify-self: stretch; }
.qr { background: #fff; display: inline-block; padding: .5rem; border-radius: 8px; margin: .5rem 0; }
.qr svg { display: block; width: 200px; height: 200px; }
pre { background: var(--line); padding: .6rem .8rem; border-radius: 8px; overflow-x: auto; }
pre.codes { font-size: 1.05rem; letter-spacing: .05em; }

/* учебные треки */
.ltask { align-items: flex-start; }
.ltask .body { flex: 1; display: grid; gap: .2rem; }
.ltask .details { font-size: .9rem; color: var(--muted); white-space: pre-wrap; }
.ltask.done .details, .ltask.done .out { opacity: .6; }
a.out { font-size: .9rem; color: var(--accent); text-decoration: none; }
a.out:hover { text-decoration: underline; }
.item .title a { text-decoration: none; }
.md { margin-top: 1rem; }
.md h2, .md h3 { margin: 1rem 0 .4rem; }
.md h2:first-child, .md h3:first-child { margin-top: 0; }
.md p, .md ul, .md ol { margin: .4rem 0; }
.md a { color: var(--accent); }
.md table { border-collapse: collapse; width: 100%; font-size: .9rem; }
.md th, .md td { border: 1px solid var(--line); padding: .3rem .5rem; text-align: left; }
.md code { background: var(--line); padding: 0 .25rem; border-radius: 4px; }
.md pre { background: var(--line); padding: .6rem; border-radius: 8px; overflow-x: auto; }
.md pre code { background: none; padding: 0; }

/* сетка привычек */
.grid-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .5rem; }
.grid { border-collapse: collapse; }
.grid th { font-weight: 400; font-size: .7rem; color: var(--muted); padding: 0 1px .3rem; text-align: center; }
.grid th.now { color: var(--accent); font-weight: 700; }
.grid th.weekend { color: var(--danger); }
.grid th.name {
  font-size: .9rem; color: var(--text); text-align: left;
  padding: .2rem .75rem .2rem .25rem; min-width: 9rem;
  position: sticky; left: 0; z-index: 1; background: var(--card);
}
.grid th.name small { display: block; color: var(--muted); font-size: .75rem; }
.grid td { padding: 2px; }
.cell { display: block; width: 1.6rem; height: 1.6rem; padding: 0; border-radius: 6px; background: var(--line); }
.cell.on { background: var(--accent); }
.cell:hover { outline: 2px solid var(--accent); }

.htmx-request { opacity: .5; }