:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1b2430;
  --muted: #5b6b7b;
  --line: #d9e0e7;
  --accent: #0b5cad;
  --accent-ink: #ffffff;
  --ok: #1a7f4b;
  --warn: #b7791f;
  --bad: #b3261e;
  --tutor: #eef4fb;
  --resident: #f7f7f2;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.5; }
body.kiosk { font-size: 19px; }
a { color: var(--accent); }
button { font: inherit; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); cursor: pointer; font-weight: 600; }
.btn:disabled { opacity: .5; cursor: default; }
.btn.secondary { background: var(--panel); color: var(--accent); }
.btn.danger { background: var(--panel); color: var(--bad); border-color: var(--bad); }
.btn.small { padding: 6px 12px; font-size: .9em; }
input[type=text], input[type=password], input[type=email], input[type=number], textarea, select { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; width: 100%; background: #fff; color: var(--ink); }
textarea { min-height: 110px; resize: vertical; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--bad); margin-top: 8px; min-height: 1.4em; }

header.top { background: var(--panel); border-bottom: 1px solid var(--line); padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
header.top .brand { font-weight: 700; letter-spacing: .2px; }
header.top .brand small { display: block; font-weight: 400; color: var(--muted); font-size: .8em; }
header.top .who { display: flex; gap: 12px; align-items: center; color: var(--muted); }

main { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* Sign-in */
.signin { max-width: 460px; margin: 8vh auto; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 32px; text-align: center; }
.signin h1 { margin: 0 0 6px; font-size: 1.5em; }
.signin p { color: var(--muted); margin-top: 0; }
.signin input { text-align: center; font-size: 1.5em; letter-spacing: .15em; font-family: var(--mono); text-transform: uppercase; margin: 16px 0; }

/* Module list */
.modules { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.card h3 { margin: 0; font-size: 1.1em; }
.card .desc { color: var(--muted); font-size: .95em; flex: 1; }
.status { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .85em; font-weight: 600; }
.status.passed { background: #e3f4ea; color: var(--ok); }
.status.in_progress { background: #fff4d6; color: var(--warn); }
.status.cooldown { background: #f9e3e1; color: var(--bad); }
.status.available { background: #e8eef5; color: var(--accent); }
.status.failed, .status.abandoned { background: #f9e3e1; color: var(--bad); }
.status.not_started { background: #eef1f4; color: var(--muted); }

/* Session */
.session { display: grid; grid-template-columns: 1fr 300px; gap: 20px; align-items: start; }
@media (max-width: 900px) { .session { grid-template-columns: 1fr; } .monitor { order: -1; } }
.transcript { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; min-height: 50vh; }
.turn { padding: 14px 18px; border-radius: 12px; margin-bottom: 14px; white-space: normal; }
.turn.tutor { background: var(--tutor); }
.turn.resident { background: var(--resident); border: 1px solid var(--line); margin-left: 8%; }
.turn.system { background: #fff; border: 1px dashed var(--line); }
.turn .label { font-size: .78em; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 4px; }
.turn p { margin: 0 0 .7em; } .turn p:last-child { margin-bottom: 0; }
.turn ul, .turn ol { margin: .3em 0 .7em 1.3em; padding: 0; }
.turn .caret::after { content: "▍"; animation: blink 1s steps(1) infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }
.verdict { font-size: .85em; font-weight: 600; margin-top: 6px; }
.verdict.correct { color: var(--ok); } .verdict.partial { color: var(--warn); } .verdict.incorrect { color: var(--bad); }

.answer { margin-top: 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.answer .row { display: flex; gap: 12px; align-items: center; justify-content: space-between; margin-top: 10px; flex-wrap: wrap; }
.mcq { display: grid; gap: 10px; }
.mcq button { text-align: left; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--line); background: #fff; cursor: pointer; }
.mcq button:hover { border-color: var(--accent); background: #f3f8ff; }
.mcq button b { font-family: var(--mono); margin-right: 10px; color: var(--accent); }

.monitor { background: #0f1720; color: #d7f5e2; border-radius: 12px; padding: 16px; font-family: var(--mono); position: sticky; top: 16px; }
.monitor .title { color: #8fb3c9; font-size: .8em; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 8px; }
.monitor .stage { color: #fff; font-family: var(--sans); font-weight: 600; margin-bottom: 12px; }
.monitor .vitals { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.monitor .v { background: #16222e; border-radius: 8px; padding: 8px 10px; }
.monitor .v .k { color: #8fb3c9; font-size: .75em; }
.monitor .v .val { font-size: 1.15em; color: #7ff0a7; }
.monitor .v.BP .val, .monitor .v.MAP .val { color: #ff8fa3; }
.monitor .v.SpO2 .val { color: #8fd3ff; }
.monitor .v.Temp .val { color: #ffd27f; }
.monitor .progress { margin-top: 14px; font-family: var(--sans); color: #cfe3f0; font-size: .9em; }
.monitor .bar { height: 8px; background: #16222e; border-radius: 4px; overflow: hidden; margin-top: 6px; }
.monitor .bar i { display: block; height: 100%; background: #7ff0a7; width: 0; transition: width .4s; }
.monitor .none { color: #6f8798; font-family: var(--sans); }

.result { background: var(--panel); border: 2px solid var(--line); border-radius: 12px; padding: 20px; margin-top: 16px; text-align: center; }
.result.passed { border-color: var(--ok); } .result.failed { border-color: var(--bad); }
.result h2 { margin: 0 0 6px; }

/* Admin */
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 20px; flex-wrap: wrap; }
.tabs button { padding: 10px 16px; border: none; background: none; cursor: pointer; color: var(--muted); border-bottom: 3px solid transparent; font-weight: 600; }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }
table { border-collapse: collapse; width: 100%; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; font-size: .95em; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: #f0f3f6; font-weight: 600; font-size: .85em; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
tr:last-child td { border-bottom: none; }
td.cell { text-align: center; cursor: pointer; }
td.cell .status { cursor: pointer; }
.grid-wrap { overflow-x: auto; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; }
.stat b { display: block; font-size: 1.4em; }
.stat span { color: var(--muted); font-size: .85em; }
dialog { border: 1px solid var(--line); border-radius: 12px; padding: 24px; max-width: 900px; width: 92vw; }
dialog::backdrop { background: rgba(0,0,0,.35); }
.code { font-family: var(--mono); font-size: 1.2em; letter-spacing: .1em; background: #eef4fb; padding: 4px 10px; border-radius: 6px; }
.objtable td.st { font-weight: 600; }
.st-confirmed, .st-confirmed_prompted { color: var(--ok); } .st-failed { color: var(--bad); } .st-missed { color: var(--warn); } .st-not_reached, .st-pending { color: var(--muted); }
.gradebox { font-size: .85em; color: var(--muted); margin-top: 6px; border-top: 1px dashed var(--line); padding-top: 6px; }
.form-grid { display: grid; grid-template-columns: 2fr 1fr 2fr auto; gap: 10px; align-items: end; }
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }
label.f { display: block; font-size: .85em; color: var(--muted); }