/* Campus Analyst web app. Colors meet WCAG 2.1 AA contrast in light and dark modes (plan P4-9.2). */
:root {
  --bg: #f6f7f9; --surface: #ffffff; --text: #1b1f24; --muted: #555d66; --border: #d5dae0;
  --accent: #0a4f8f; --accent-text: #ffffff; --accent-soft: #e6eef7;
  --ok-bg: #e7f4ea; --ok-text: #1d5b2c; --warn-bg: #fff4dc; --warn-text: #6b4a00;
  --err-bg: #fde8e8; --err-text: #8a1c1c; --danger: #a61b1b; --focus: #f2a900;
  --radius: 8px; --gap: 1rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171b; --surface: #1d2126; --text: #e8eaed; --muted: #a9b1ba; --border: #39404a;
    --accent: #7cb7f2; --accent-text: #0d1a27; --accent-soft: #1f3244;
    --ok-bg: #173022; --ok-text: #a8e2b6; --warn-bg: #3a2e10; --warn-text: #f2d48a;
    --err-bg: #3d1a1a; --err-text: #f4b3b3; --danger: #f08b8b; --focus: #f2c14e;
  }
}
* { box-sizing: border-box; }
html { font-size: 100%; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 1rem/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.top { display: flex; flex-wrap: wrap; gap: var(--gap); align-items: center; justify-content: space-between;
  padding: .75rem 1.25rem; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--text); }
.brandbox { display: flex; flex-wrap: wrap; align-items: baseline; gap: .1rem .75rem; }
.tagline { color: var(--muted); font-size: .9rem; }
.top nav ul { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; list-style: none; margin: 0; padding: 0; align-items: center; }
main { max-width: 64rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.foot { max-width: 64rem; margin: 0 auto; padding: 0 1rem 2rem; color: var(--muted); font-size: .875rem; }
h1 { font-size: 1.75rem; margin: .25rem 0 1rem; }
h2 { font-size: 1.2rem; margin: 0 0 .75rem; }
.crumb { margin: 0; font-size: .9rem; }
.muted, .hint { color: var(--muted); }
.hint { font-size: .875rem; margin: .25rem 0 .75rem; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.25rem; margin: 0 0 var(--gap); }
.narrow { max-width: 28rem; margin: 2rem auto; }
.cards { list-style: none; padding: 0; display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.plain { list-style: none; padding: 0; margin: 0; }
.plain li { padding: .3rem 0; }

label { display: block; font-weight: 600; margin: .75rem 0 .25rem; }
input, select, textarea { width: 100%; font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--muted); border-radius: 6px; padding: .55rem .65rem; min-height: 2.75rem; }
input[readonly] { background: var(--bg); }
button, .button { display: inline-block; font: inherit; font-weight: 600; cursor: pointer; text-align: center; text-decoration: none;
  background: var(--accent); color: var(--accent-text); border: 1px solid var(--accent); border-radius: 6px;
  padding: .6rem 1.1rem; min-height: 2.75rem; margin-top: 1rem; }
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.small { padding: .3rem .7rem; min-height: 2.25rem; margin: 0; font-size: .9rem; }
button.link { background: none; border: none; color: var(--accent); padding: 0; margin: 0; min-height: 0; font-weight: 400; text-decoration: underline; }
.wide { width: 100%; }
form.inline { display: inline; }
.after { margin-top: 1rem; }
.or { text-align: center; color: var(--muted); margin: 1.25rem 0 0; }
.oauth .button { margin-top: .6rem; }

.row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: flex-end; }
.row > div { flex: 1 1 14rem; }
.row button { margin-top: 0; }
.grid { display: grid; gap: 0 1rem; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); align-items: start; }
.grid > div:last-child { align-self: end; }
.grid .span { grid-column: 1 / -1; }

.flash { border-radius: 6px; padding: .75rem 1rem; margin: 0 0 1rem; }
.flash-ok { background: var(--ok-bg); color: var(--ok-text); }
.flash-warn { background: var(--warn-bg); color: var(--warn-text); }
.flash-error { background: var(--err-bg); color: var(--err-text); }

.table-wrap { overflow-x: auto; position: relative; }   /* keeps visually hidden labels inside it */
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { font-size: .85rem; color: var(--muted); font-weight: 600; }
tbody th { font-weight: 600; }
td.actions { white-space: nowrap; }
td.actions form + form { margin-left: .35rem; }
td select { width: auto; min-height: 2.25rem; padding: .25rem .4rem; }

.badge { display: inline-block; font-size: .8rem; font-weight: 600; padding: .1rem .5rem; border-radius: 999px;
  background: var(--accent-soft); color: var(--text); border: 1px solid var(--border); }

/* two-factor sign-in */
.steps { padding-left: 1.25rem; }
.steps li { margin: 0 0 .75rem; }
.qr { display: block; margin: .75rem 0; background: #fff; padding: 8px; border-radius: 6px; border: 1px solid var(--border); max-width: 100%; height: auto; }
.secret code { font-size: 1.05rem; letter-spacing: .05em; word-break: break-all; }
input.code { font-size: 1.4rem; letter-spacing: .3em; max-width: 12rem; font-variant-numeric: tabular-nums; }
fieldset { border: 0; padding: 0; margin: 0 0 .75rem; }
legend { font-weight: 600; margin-bottom: .25rem; }
.choice { display: flex; gap: .5rem; align-items: center; font-weight: normal; }
.choice input { width: auto; }
input.small { width: auto; min-width: 14rem; padding: .3rem .5rem; font-size: .875rem; }

/* chat and library */
textarea { line-height: 1.45; resize: vertical; min-height: 5rem; }
.turn { margin: 0 0 1.25rem; }
.turn .question { background: var(--accent-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: .6rem 1rem; margin-left: 15%; }
.turn .question p { margin: .2rem 0; }
.turn .who { font-size: .85rem; color: var(--muted); font-weight: 600; }
.turn .answer { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: .75rem 1rem; margin: .6rem 15% 0 0; }
.turn .working { color: var(--muted); font-style: italic; }
.prose table { width: auto; margin: .75rem 0; }
.prose :is(h1, h2, h3) { font-size: 1.05rem; }
.options { display: flex; flex-wrap: wrap; gap: .5rem; margin: .5rem 0; }
details.how { margin-top: .75rem; font-size: .9rem; }
details.how summary { cursor: pointer; color: var(--accent); }
details.how dl { display: grid; grid-template-columns: max-content 1fr; gap: .2rem 1rem; }
details.how dt { font-weight: 600; }
details.how dd { margin: 0; }
pre { overflow-x: auto; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: .6rem; font-size: .85rem; }
.row-actions { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.row-actions .button, .row-actions button { margin-top: 0; }
fieldset.metrics { border-top: 1px solid var(--border); padding-top: .6rem; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); gap: 0 1rem; }
.checks .choice { align-items: flex-start; padding: .15rem 0; }
.checks .choice input { margin-top: .3rem; }
.hint code, dd { overflow-wrap: anywhere; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; margin: 0; }
dl.facts dt { font-weight: 600; }
dl.facts dd { margin: 0; }
@media (max-width: 40rem) {
  dl.facts { grid-template-columns: 1fr; }
  dl.facts dd { margin-bottom: .4rem; }
  .turn .question { margin-left: 0; }
  .turn .answer { margin-right: 0; }
}
/* usage and budgets */
input.small.money { min-width: 0; width: 7rem; }
meter { width: 12rem; max-width: 100%; height: 1.1rem; vertical-align: middle; margin-right: .5rem; }