/* Trial Balance, inside the gdsb design system.
   Palette, type and chrome match docs/index.html. */

:root {
  --green: #2E6B4F; --ink: #121916; --mut: #5C6B63;
  --paper: #F7FAF8; --surf: #FFFFFF; --line: #E2EAE6;
  --green-ink: #FFFFFF; --green-soft: #EAF2EE; --line-strong: #C7D5CE;
  --warn: #9A3B2F; --miss: #B9C6BF;
  --shadow: 0 1px 2px rgba(18,25,22,.05), 0 8px 24px rgba(18,25,22,.05);
}
@media (prefers-color-scheme: dark) {
  :root {
    --green: #8FD3B0; --ink: #E8EFEB; --mut: #93A69C;
    --paper: #0C110F; --surf: #141A17; --line: #232C28;
    --green-ink: #0C110F; --green-soft: #1B2620; --line-strong: #33403A;
    --warn: #E39A8E; --miss: #3A4642;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: var(--green); }
.mono {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
}
.wrap { max-width: 64rem; margin: 0 auto; padding: 0 1.5rem; }
.narrow { max-width: 40rem; }

/* ---- site chrome, copied from the gdsb home page ---- */
header.site { border-bottom: 1px solid var(--line); background: var(--surf); }
header.site .wrap { display: flex; align-items: center; gap: 1.5rem; padding: 1.1rem 1.5rem; }
header.site nav {
  margin-left: auto; display: flex; gap: 1.4rem; font-size: .9rem;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}
header.site nav a, header.site nav button {
  color: var(--mut); text-decoration: none; background: none; border: 0;
  font: inherit; cursor: pointer; padding: 0;
}
header.site nav a:hover, header.site nav button:hover { color: var(--green); }
.logo { display: flex; align-items: center; text-decoration: none; }
svg.mark { display: block; height: 22px; width: auto; overflow: visible; }
footer.site { border-top: 1px solid var(--line); background: var(--surf); margin-top: 3rem; }
footer.site .wrap {
  padding: 1.6rem 1.5rem 2.2rem; display: flex; gap: 1.2rem; align-items: center;
  flex-wrap: wrap; font-size: .85rem; color: var(--mut);
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}
footer.site a { color: var(--mut); }

/* ---- masthead ---- */
main { padding: 2.2rem 0 0; }
.title { display: flex; align-items: baseline; gap: .55rem; margin: 0 0 .2rem; }
h1 { font-size: 1.75rem; letter-spacing: -.02em; font-weight: 800; margin: 0; }
.sq { width: .5rem; height: .5rem; background: var(--green); display: inline-block; flex: none; }
.meta {
  color: var(--mut); font-size: .82rem; letter-spacing: .04em; margin: 0 0 1.3rem;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}
.meta a { color: var(--mut); }

/* ---- the ledger ---- */
.ledger {
  background: var(--surf); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); overflow: hidden;
}
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
caption { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
th {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: .66rem; text-transform: uppercase; letter-spacing: .12em; color: var(--mut);
  font-weight: 600; padding: .75rem 1rem .6rem; text-align: right;
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
th:first-child { text-align: left; }
td {
  padding: .38rem 1rem; text-align: right; font-size: .87rem;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}
td:first-child {
  text-align: left; font-family: inherit; font-size: .95rem; padding-right: .4rem;
}
tbody tr { cursor: pointer; }
tbody tr td { transition: background .12s ease; }
@media (hover: hover) { tbody tr:hover td { background: var(--green-soft); } }
tbody tr.on td { background: var(--green-soft); }
tbody tr.on td:first-child { box-shadow: inset 3px 0 0 var(--green); }
tbody tr:focus-visible { outline: 2px solid var(--green); outline-offset: -2px; }
tbody tr[aria-disabled="true"] { cursor: default; }
@media (hover: hover) { tbody tr[aria-disabled="true"]:hover td { background: none; } }
tfoot td { border-top: 2px solid var(--line-strong); font-weight: 700; padding-top: .6rem; }
.tot { display: inline-block; padding: .06rem .3rem; margin: -.06rem -.3rem; border-radius: 4px; cursor: pointer; }
@media (hover: hover) { .tot:hover { background: var(--green-soft); } }
.tot.on { background: var(--green-soft); box-shadow: inset 0 -3px 0 var(--green); }
.tot:focus-visible { outline: 2px solid var(--green); outline-offset: 1px; }
tfoot tr.gap td { border-top: 0; padding-top: .1rem; padding-bottom: .75rem; color: var(--warn); }

/* ---- controls ---- */
.kinds { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1.1rem 0 .85rem; }
.kinds button {
  font: 500 .87rem/1 inherit; padding: .55rem .9rem; border-radius: 999px;
  border: 1px solid var(--line-strong); background: var(--surf); color: var(--ink);
  cursor: pointer; transition: border-color .12s ease, background .12s ease;
}
@media (hover: hover) { .kinds button:hover { border-color: var(--green); } }
.kinds button.on { background: var(--green); border-color: var(--green); color: var(--green-ink); }
.kinds button:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.kinds button[disabled] { opacity: .45; cursor: default; }

.bar { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; }
.btn {
  font: 600 .95rem/1 inherit; padding: .75rem 1.35rem; border-radius: 8px;
  border: 1px solid var(--green); background: var(--green); color: var(--green-ink); cursor: pointer;
}
.btn[disabled] { opacity: .35; cursor: default; }
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn.quiet { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.hint { color: var(--mut); font-size: .85rem; }

.marks { display: flex; flex-direction: column; gap: .3rem; margin: 1rem 0 0; }
.marks .row { display: flex; gap: .3rem; align-items: center; }
.pip { width: 1.3rem; height: 1.3rem; border-radius: 4px; background: var(--miss); }
.pip.hit { background: var(--green); }
.marks .label { color: var(--mut); font-size: .8rem; margin-left: .4rem; }

/* ---- reveal ---- */
.reveal {
  margin-top: 1.1rem; background: var(--surf); border: 1px solid var(--line);
  border-radius: 10px; padding: 1.1rem 1.2rem; box-shadow: var(--shadow);
}
.reveal h2 { margin: 0; font-size: 1.02rem; font-weight: 700; }
.reveal .kind { color: var(--green); }
.reveal p { margin: .4rem 0 0; font-size: .92rem; }
.reveal p.tell { color: var(--mut); font-size: .85rem; }
.reveal .bar { margin-top: .9rem; }
.next { color: var(--mut); font-size: .82rem; font-variant-numeric: tabular-nums; }

/* ---- prose ---- */
.about { margin-top: 2rem; border-top: 1px solid var(--line); padding-top: 1.4rem; }
.about h2 { font-size: 1.05rem; margin: 0 0 .4rem; font-weight: 700; }
.about h3 { font-size: .95rem; margin: 1.3rem 0 .3rem; font-weight: 700; }
.about p, .about li { font-size: .93rem; color: var(--mut); margin: 0 0 .55rem; }
.about ul { padding-left: 1.15rem; margin: 0 0 .55rem; }
.about strong { color: var(--ink); font-weight: 600; }

/* ---- archive ---- */
.months { margin: .4rem 0 0; }
.months h2 {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--mut); font-weight: 600; margin: 1.6rem 0 .5rem;
}
.days { display: grid; gap: .5rem; grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); }
.day {
  display: block; text-decoration: none; color: inherit; background: var(--surf);
  border: 1px solid var(--line); border-radius: 8px; padding: .6rem .75rem;
  transition: border-color .12s ease;
}
.day:hover { border-color: var(--green); }
.day .n {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: .95rem; font-weight: 700; display: flex; align-items: center; gap: .4rem;
}
.day .n em { font-style: normal; margin-left: auto; font-size: .68rem; color: var(--mut); letter-spacing: .1em; text-transform: uppercase; }
.day .d { color: var(--mut); font-size: .8rem; margin-top: .15rem; }
.day .pips { display: flex; gap: .2rem; margin-top: .45rem; height: .55rem; }
.day .pips i { width: .55rem; height: .55rem; border-radius: 2px; background: var(--miss); display: block; }
.day .pips i.hit { background: var(--green); }
.day.done { border-color: var(--line-strong); }
.day.today { border-color: var(--green); box-shadow: inset 0 0 0 1px var(--green); }

/* ---- practice ---- */
.picker { display: flex; gap: .45rem; align-items: center; flex-wrap: wrap; margin: 0 0 1.1rem; }
.picker span { color: var(--mut); font-size: .85rem; }

/* ---- overlay ---- */
.veil {
  position: fixed; inset: 0; background: rgba(12,17,15,.5);
  display: flex; align-items: center; justify-content: center; padding: 1rem; z-index: 20;
}
.veil[hidden] { display: none; }
.sheet {
  background: var(--surf); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.3rem 1.3rem 1.1rem; max-width: 27rem; width: 100%; max-height: 86vh;
  overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.sheet h2 { margin: 0 0 .5rem; font-size: 1.05rem; font-weight: 700; }
.sheet p, .sheet li { font-size: .92rem; margin: 0 0 .55rem; }
.sheet ul { padding-left: 1.15rem; }
.sheet .ex { display: flex; gap: .3rem; align-items: center; margin: .4rem 0 .6rem; }
.sheet .ex span { font-size: .85rem; color: var(--mut); margin-left: .4rem; }
.stats { display: flex; gap: .4rem; text-align: center; margin: .2rem 0 1rem; }
.stats div { flex: 1; }
.stats b { display: block; font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stats span { font-size: .68rem; color: var(--mut); line-height: 1.25; display: block; }
.dist .r { display: flex; align-items: center; gap: .5rem; margin-bottom: .25rem; font-size: .82rem; }
.dist .r i { font-style: normal; width: .75rem; color: var(--mut); }
.dist .r b {
  background: var(--line-strong); color: var(--ink); border-radius: 3px;
  padding: .05rem .45rem; font-size: .76rem; font-weight: 600; min-width: 1.6rem; text-align: right;
}
.dist .r.best b { background: var(--green); color: var(--green-ink); }

.toast {
  position: fixed; left: 50%; bottom: 1.6rem; transform: translateX(-50%);
  background: var(--ink); color: var(--paper); padding: .6rem 1.1rem; border-radius: 7px;
  font-size: .88rem; z-index: 30; box-shadow: var(--shadow);
}
.toast[hidden] { display: none; }

@media (max-width: 30rem) {
  body { font-size: 16px; }
  main { padding-top: 1.6rem; }
  td, th { padding-left: .7rem; padding-right: .7rem; }
  td { font-size: .8rem; }
  td:first-child { font-size: .87rem; }
  .wrap { padding: 0 1rem; }
  header.site .wrap, footer.site .wrap { padding-left: 1rem; padding-right: 1rem; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

footer.site .logo svg.mark { height: 15px; }