:root {
  --ink: #17171a; --muted: #6b6b75; --line: #e4e4e8; --bg: #f6f6f4; --card: #fff;
  --brand: #b3141a; --brand-dark: #8c0f14; --ok: #13795b; --warn: #a15c00; --bad: #b3141a;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.04);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink); background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.5; }
a { color: var(--brand); }
h1 { font-size: 1.75rem; margin: .2em 0 .6em; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; margin: 0 0 .7em; }
h3 { font-size: 1.05rem; margin: 0 0 .3em; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.main { padding-top: 28px; padding-bottom: 48px; min-height: 70vh; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--muted); }
.center { text-align: center; }
.hint { color: var(--muted); font-size: .88rem; margin: -6px 0 12px; }

/* Header */
.topbar { background: #111; color: #fff; border-bottom: 3px solid var(--brand); }
.topbar-inner { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { color: #fff; text-decoration: none; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.brand-mark { display: inline-grid; place-items: center; width: 32px; height: 32px; background: var(--brand); border-radius: 6px; font-size: 1rem; }
.mainnav { margin-left: auto; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.mainnav a, .mainnav .linklike { color: #ddd; text-decoration: none; padding: 8px 10px; border-radius: 6px; font-size: .95rem; }
.mainnav a:hover, .mainnav a[aria-current="page"], .mainnav .linklike:hover { color: #fff; background: rgba(255,255,255,.08); }
.mainnav .btn { color: #fff; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid #555; color: #fff; border-radius: 6px; padding: 6px 12px; }
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .mainnav { display: none; width: 100%; flex-direction: column; align-items: stretch; padding-bottom: 12px; }
  .nav-open .mainnav { display: flex; }
  .topbar-inner { flex-wrap: wrap; }
}

/* Buttons & forms */
.btn { display: inline-block; background: var(--brand); color: #fff; border: 1px solid var(--brand); border-radius: 8px; padding: 10px 16px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-sm { padding: 6px 12px; font-size: .9rem; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: #f0f0ee; border-color: #ccc; }
.btn-danger { background: #fff; color: var(--bad); border-color: var(--bad); }
.btn-danger:hover { background: var(--bad); color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; margin-top: 8px; }
.linklike { background: none; border: 0; font: inherit; cursor: pointer; color: var(--brand); padding: 0; }
form.inline { display: inline; }
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 14px; }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 10px 12px; font: inherit; font-weight: 400; border: 1px solid #cfcfd6; border-radius: 8px; background: #fff; color: var(--ink); }
input:focus, select:focus, textarea:focus, .btn:focus-visible { outline: 3px solid rgba(179,20,26,.25); border-color: var(--brand); }
input[readonly] { background: #f3f3f3; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
label.check input { width: auto; margin: 0; }
fieldset { border: 1px solid var(--line); border-radius: 8px; margin: 0 0 14px; padding: 10px 14px; }
legend { font-weight: 600; font-size: .92rem; padding: 0 4px; }
.days { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.days label { margin: 0; }
.err { display: block; color: var(--bad); font-weight: 500; font-size: .85rem; margin-top: 4px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.row3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 16px; }
@media (max-width: 640px) { .row2, .row3 { grid-template-columns: 1fr; } }

/* Cards & layout */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; box-shadow: var(--shadow); }
.card.narrow { max-width: 460px; margin: 20px auto; }
.narrow-left { max-width: 460px; }
.card.danger { border-color: #f1c4c6; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.grid > .card { margin-bottom: 0; }
.grid + * { margin-top: 20px; }
.pagehead { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.pagehead h1, .pagehead h2 { margin: 0; }
.filters { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filters input, .filters select { width: auto; margin: 0; }
.filters label { margin: 0; display: flex; align-items: center; gap: 8px; }
.subnav { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.subnav a { padding: 8px 12px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.subnav a[aria-current="page"], .subnav a:hover { color: var(--ink); border-color: var(--brand); }

/* Hero */
.hero { background: linear-gradient(135deg, #111 0%, #2a0a0b 100%); color: #fff; border-radius: 14px; padding: 48px 36px; margin-bottom: 28px; }
.hero h1 { font-size: 2.2rem; max-width: 18em; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; color: #f2a5a8; margin: 0; }
.lede { font-size: 1.1rem; color: #ddd; max-width: 38em; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.hero .btn-ghost { color: #fff; border-color: #666; }
.hero .btn-ghost:hover { background: rgba(255,255,255,.1); }
.program .tag { margin: 0 0 8px; display: inline-block; }

/* Schedule */
.weeknav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 12px 0 20px; }
.day { margin-bottom: 24px; }
.dayhead { font-size: 1rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.session { display: grid; grid-template-columns: 90px 1fr auto; gap: 16px; align-items: start; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 8px; padding: 14px 16px; margin-bottom: 10px; }
.session.is-cancelled { opacity: .6; border-left-color: #999; }
.session-time { font-weight: 700; font-size: 1.05rem; }
.session-time span { display: block; color: var(--muted); font-weight: 400; font-size: .85rem; }
.session-body p { margin: 2px 0; }
.session-actions { display: flex; flex-direction: column; gap: 8px; }
.bookform { display: flex; flex-direction: column; gap: 8px; min-width: 190px; }
.who-pick { margin: 0; padding: 6px 10px 8px; }
.who-pick legend { font-size: .82rem; color: var(--muted); }
.who-pick label.check { margin: 4px 0; }
.who-pick input { width: 18px; height: 18px; }
.who { margin: 0; font-size: .9rem; color: var(--muted); }
.bookbtns { display: flex; gap: 6px; flex-wrap: wrap; }
.small { font-size: .85rem; margin: 4px 0 0; }
.session:target { box-shadow: 0 0 0 3px rgba(179,20,26,.25); }
.mine { color: var(--ok); font-weight: 600; font-size: .9rem; }
@media (max-width: 640px) { .session { grid-template-columns: 1fr; } }

/* Tables & lists */
.tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .94rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
td form { margin: 0; }
td select { margin: 0; padding: 6px 8px; width: auto; }
tr.is-cancelled td { color: var(--muted); text-decoration: line-through; }
tr.is-cancelled td .badge, tr.is-cancelled td a.btn { text-decoration: none; }
td.ua { max-width: 260px; font-size: .85rem; }
td.details code { font-size: .78rem; word-break: break-all; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.list li:last-child { border-bottom: 0; }
.kv { list-style: none; padding: 0; margin: 0 0 16px; }
.kv li { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.kv span { color: var(--muted); }
.student-row { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 12px; align-items: end; border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 12px; }
.row-actions { display: flex; gap: 6px; align-items: center; margin-bottom: 14px; }
@media (max-width: 760px) { .student-row { grid-template-columns: 1fr 1fr; } }

/* Badges, alerts, stats */
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .78rem; font-weight: 600; background: #eee; color: #444; }
.badge-ok { background: #e3f4ec; color: var(--ok); }
.badge-warn { background: #fff1dc; color: var(--warn); }
.badge-bad { background: #fde5e6; color: var(--bad); }
.tag { display: inline-block; padding: 1px 7px; border-radius: 4px; font-size: .75rem; background: #f0f0ee; color: var(--muted); border: 1px solid var(--line); }
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; border: 1px solid; }
.alert-ok { background: #e9f7f0; border-color: #b6e2cd; color: #0d5c45; }
.alert-warn { background: #fff6e8; border-color: #f2d3a2; color: #6b3d00; }
.alert-bad { background: #fdecec; border-color: #f3c0c2; color: #8c0f14; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; color: var(--muted); font-size: .88rem; }
.stat span { display: block; font-size: 1.8rem; font-weight: 800; color: var(--ink); }
.stat.warn span { color: var(--bad); }

/* MFA */
.qr { display: block; margin: 12px 0; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.secret { display: inline-block; padding: 6px 10px; background: #f3f3f3; border-radius: 6px; letter-spacing: .1em; word-break: break-all; }
.steps li { margin-bottom: 14px; }
.codes { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.codes code { display: block; padding: 8px; background: #f3f3f3; border-radius: 6px; text-align: center; font-size: 1rem; }

.footer { display: flex; justify-content: space-between; padding-top: 20px; padding-bottom: 30px; color: var(--muted); font-size: .88rem; border-top: 1px solid var(--line); }

.who-pick.need-pick { border-color: var(--bad); }
.who-pick.need-pick legend { color: var(--bad); font-weight: 600; }
@media (max-width: 640px) {
  .weeknav { gap: 6px; }
  .weeknav .btn { white-space: nowrap; padding: 6px 10px; }
  .weeknav strong { font-size: .92rem; text-align: center; }
  .pagehead .filters { width: 100%; }
  .pagehead .filters select { width: 100%; }
}

form + .hint, .bookbtns + .hint { margin-top: 10px; }

/* Month calendar on the schedule */
.cal { max-width: 340px; margin: 4px auto 6px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px 10px; box-shadow: var(--shadow); }
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.cal-head strong { font-size: 1rem; }
.cal-nav { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; text-decoration: none; color: var(--ink); font-size: 1.4rem; line-height: 1; }
.cal-nav:hover, .cal-nav:focus-visible { background: #f0f0ee; }
.cal-nav.is-off { color: #c9c9cf; }
.cal-grid { width: 100%; border-collapse: separate; border-spacing: 2px; table-layout: fixed; font-size: .9rem; }
.cal-grid th { padding: 4px 0; text-align: center; font-size: .72rem; letter-spacing: .04em; color: var(--muted); border: 0; }
.cal-grid td { padding: 0; text-align: center; border: 0; }
.cal-grid td a, .cal-grid td > span { position: relative; display: grid; place-items: center; height: 36px; border-radius: 8px; text-decoration: none; color: var(--ink); font-variant-numeric: tabular-nums; }
.cal-grid td > span { color: #c9c9cf; }
.cal-grid td a:hover, .cal-grid td a:focus-visible { background: #f0f0ee; outline: none; box-shadow: inset 0 0 0 2px rgba(179,20,26,.35); }
.cal-grid td.is-out a { color: #a5a5ad; }
.cal-grid td.is-past a { color: #9a9aa2; }
.cal-grid tr.is-week td a { background: #fbeeee; }
.cal-grid td.is-today a { font-weight: 800; box-shadow: inset 0 0 0 2px var(--brand); }
.cal-grid tr td.is-selected a { background: var(--brand); color: #fff; font-weight: 700; }
.cal-grid .dot { position: absolute; bottom: 4px; left: 50%; width: 5px; height: 5px; margin-left: -2.5px; border-radius: 50%; background: var(--brand); }
.cal-grid td.is-selected .dot { background: #fff; }
.cal-key { display: flex; align-items: center; gap: 6px; margin: 6px 2px 0; font-size: .8rem; color: var(--muted); }
.cal-key .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.cal-key a { margin-left: auto; font-weight: 600; }
.day:target .dayhead { color: var(--brand); border-bottom-color: var(--brand); }
@media (max-width: 640px) { .cal { max-width: none; } }