/*
 * GEM's screens (Stage 13 design; docs/design/stage-13-design.md).
 * Every colour is a token checked for WCAG 2.2 AA contrast in the light and
 * dark schemes. The monitor is dark in both, as a bedside monitor is.
 */

/* Cormorant Garamond, by Christian Thalmann, under the SIL Open Font
 * Licence 1.1 (src/app/fonts/OFL.txt). GEM serves it itself. */
@font-face {
  font-family: "Cormorant Garamond";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/cormorant-garamond-600.woff2") format("woff2");
}

:root {
  color-scheme: light dark;
  --bg: #f7f5f1;
  --surface: #fefdfb;
  --surface-2: #fbf9f6;
  --sunken: #efebe5;
  --border: #dcd6d1;
  --border-strong: #7b746e;
  --text: #2b4249;
  --muted: #625d59;
  --accent: #2b4249;
  --on-accent: #fefdfb;
  --accent-soft: #e9eeee;
  --link: #7f5c66;
  --danger: #a8231d;
  --danger-soft: #fdecea;
  --warning: #7a4d00;
  --warning-soft: #fdf3dc;
  --success: #1b6b3a;
  --success-soft: #e6f4ea;
  --voice: #4f3c96;
  --voice-soft: #f2effb;
  --metal: #a8664c;
  --mark: #2b4249;
  --mark-cross: #dca58d;
  --shadow: none;

  --monitor-bg: #0b1217;
  --monitor-tile: #111b22;
  --monitor-line: #2a3946;
  --monitor-label: #a3b7c6;
  --monitor-value: #6ee7a4;
  --monitor-text: #d2dde5;
  --monitor-quiet: #8fa3b3;
  --monitor-alert: #ffcf66;

  --font:
    system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    sans-serif;
  --heading-font:
    "Cormorant Garamond", Charter, "Iowan Old Style", "Palatino Linotype",
    Palatino, Georgia, serif;
  --radius: 0.25rem;
  --radius-large: 0.25rem;
  --gutter: 1rem;
  --page: 90rem;
  --reading: 52rem;
  --target: 2.75rem;

  font-family: var(--font);
  font-size: 100%;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --surface: #19191c;
    --surface-2: #1e1e22;
    --sunken: #141416;
    --border: #2f2f35;
    --border-strong: #8b8b94;
    --text: #f4f4f5;
    --muted: #a9a9b2;
    --accent: #f4f4f5;
    --on-accent: #111113;
    --accent-soft: #2a2a30;
    --link: #dca58d;
    --danger: #ff9189;
    --danger-soft: #3a1a19;
    --warning: #f2c46b;
    --warning-soft: #352a12;
    --success: #7fd6a0;
    --success-soft: #15301f;
    --voice: #bcadf6;
    --voice-soft: #231f3c;
    --metal: #dca58d;
    --mark: #dca58d;
    --mark-cross: #111113;
    --shadow: none;
  }
}

/* Base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  overflow-wrap: break-word;
}

main {
  width: 100%;
  max-width: var(--page);
  margin: 0 auto;
  padding: 1.25rem var(--gutter) 3rem;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1,
h2 {
  font-family: var(--heading-font);
  font-weight: 600;
  letter-spacing: 0;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.4rem;
  margin: 1.75rem 0 0.75rem;
}

h3 {
  font-size: 1.0625rem;
  margin: 1.25rem 0 0.5rem;
}

p {
  margin: 0 0 0.75rem;
}

a {
  color: var(--link);
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
}

ul,
ol {
  padding-left: 1.25rem;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.muted {
  color: var(--muted);
}

/* Controls */

button,
select,
input,
textarea {
  font: inherit;
  color: inherit;
}

button,
a.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: var(--target);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

button:hover:not(:disabled),
a.button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

button:disabled {
  cursor: progress;
  opacity: 0.55;
}

button.primary,
a.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

button.primary:hover:not(:disabled),
a.button.primary:hover {
  background: var(--accent);
  box-shadow: inset 0 0 0 2px var(--on-accent);
}

button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--surface);
}

button.danger:hover:not(:disabled) {
  background: var(--danger);
  box-shadow: inset 0 0 0 2px var(--surface);
}

button.link {
  min-height: 2.25rem;
  padding: 0.25rem 0.125rem;
  border: none;
  background: none;
  color: var(--link);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

button.link:hover:not(:disabled) {
  background: none;
  text-decoration-thickness: 2px;
}

input,
select,
textarea {
  width: 100%;
  min-height: var(--target);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

select {
  appearance: none;
  padding-right: 2.25rem;
  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    right 1.1rem center,
    right 0.75rem center;
  background-size: 0.35rem 0.35rem;
  background-repeat: no-repeat;
}

textarea {
  min-height: 7rem;
  resize: vertical;
}

input[type="checkbox"],
input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  min-height: 0;
  margin: 0.15rem 0 0;
  padding: 0;
  accent-color: var(--accent);
  flex: none;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
}

label > input,
label > select,
label > textarea {
  font-weight: 400;
}

label.check,
label.point {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.6rem;
  font-weight: 400;
  cursor: pointer;
}

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

/* The bar at the top of every screen */

.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  min-height: 3.5rem;
  padding: 0.5rem var(--gutter);
  background: var(--surface);
  border-bottom: 2px solid var(--metal);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: var(--target);
  color: var(--text);
  font-family: var(--heading-font);
  font-weight: 600;
  font-size: 1.375rem;
  letter-spacing: 0.1em;
  text-decoration: none;
}

.brand::before {
  content: "";
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.4rem;
  background:
    linear-gradient(var(--mark-cross), var(--mark-cross)) center / 0.75rem
      0.2rem no-repeat,
    linear-gradient(var(--mark-cross), var(--mark-cross)) center / 0.2rem
      0.75rem no-repeat,
    var(--mark);
}

.bar-title {
  flex: 1 1 12rem;
  min-width: 0;
  font-weight: 600;
}

.clock {
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius);
  background: var(--monitor-bg);
  color: var(--monitor-value);
  font-size: 1.0625rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* Cards, badges and notices */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card > :first-child {
  margin-top: 0;
}

.card > :last-child {
  margin-bottom: 0;
}

.badge,
.practice,
.stage,
.outcome {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.5;
  vertical-align: 0.05em;
  white-space: nowrap;
}

.badge {
  color: var(--warning);
  background: var(--warning-soft);
  white-space: normal;
}

.practice {
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent);
}

.notice {
  margin: 0 auto 1rem;
  text-align: center;
  color: var(--muted);
}

.error,
.status {
  margin: 0;
}

.error:empty,
.status:empty {
  display: none;
}

.error {
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--danger);
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: var(--danger);
  font-weight: 600;
}

.status {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  background: var(--accent-soft);
  font-weight: 600;
}

main > .error {
  margin-bottom: 1rem;
}

/* Signing in */

.narrow {
  display: grid;
  gap: 1rem;
  max-width: 28rem;
  margin: 1.5rem auto;
}

.narrow h1 {
  margin: 0;
}

.narrow button.primary {
  width: 100%;
}

.narrow button.link,
.narrow > a {
  justify-self: center;
}

.narrow h2 {
  margin: 0;
}

/* The front page and the privacy note */

.front {
  display: grid;
  gap: 1.5rem;
  max-width: 64rem;
  margin: 1.5rem auto 0;
  align-items: start;
}

.front .narrow {
  width: 100%;
  margin: 0;
}

.intro h1 {
  margin: 0 0 0.75rem;
}

.intro ul {
  padding-left: 1.25rem;
}

.intro li + li {
  margin-top: 0.35rem;
}

.reading {
  max-width: var(--reading);
  margin: 0 auto;
}

.reading h2 {
  margin-top: 1.75rem;
}

.reading li + li {
  margin-top: 0.5rem;
}

/* The account page: a reading column, with room between its fields */

.account {
  display: grid;
  gap: 1rem;
  max-width: var(--reading);
}

.account h1,
.account > p {
  margin: 0;
}

.account form.card {
  display: grid;
  gap: 1rem;
}

.account form.card button {
  justify-self: start;
}

/* The case list and run history */

.cards {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
}

.cards > li {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cards h3 {
  margin: 0;
  font-size: 1.125rem;
}

.cards p {
  margin: 0;
}

.cards .badge {
  align-self: flex-start;
}

.cards .row {
  margin-top: auto;
  padding-top: 0.75rem;
  align-items: end;
}

.field {
  flex: 1 1 12rem;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.cards .row > button {
  flex: 1 1 100%;
}

.field select {
  color: var(--text);
  font-size: 1rem;
}

.exam-link {
  margin: 1.5rem 0 0;
  background: var(--accent-soft);
  border-color: var(--accent-soft);
}

.exam-link h2 {
  margin: 0 0 0.25rem;
}

.runs {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.runs > li {
  padding: 0.75rem 1rem 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  border-left: 4px solid transparent;
}

.runs > li:first-child {
  border-top: none;
}

.runs > li > a:first-child {
  display: block;
  font-weight: 600;
}

.runs > li.safe-terminal {
  border-left-color: var(--success);
}

.runs > li.unsafe-terminal {
  border-left-color: var(--danger);
}

.runs > li.uncertainty-handover {
  border-left-color: var(--warning);
}

.runs > li.in-progress {
  border-left-color: var(--metal);
}

.practice-line,
.review-line {
  margin-top: 0.25rem;
  font-size: 0.875rem;
}

/* Play */

.play .hard-stop {
  position: relative;
  margin-bottom: 1rem;
  padding: 1rem 1rem 1rem 3.5rem;
  border: 2px solid var(--danger);
  border-radius: var(--radius-large);
  background: var(--danger-soft);
  color: var(--text);
  font-size: 1.0625rem;
  font-weight: 600;
}

.play .hard-stop::before {
  content: "!";
  content: "!" / "";
  position: absolute;
  left: 1rem;
  top: 0.95rem;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--danger);
  color: var(--surface);
  font-weight: 800;
}

.hard-stop strong {
  color: var(--danger);
}

.exam-conditions {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--metal);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.columns {
  display: grid;
  gap: 1.5rem;
}

.record,
.side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
  min-width: 0;
}

.side h2,
.known h2 {
  margin-top: 0;
}

/* The monitor */

.monitor {
  padding: 1rem;
  border-radius: var(--radius-large);
  background: var(--monitor-bg);
  color: var(--monitor-text);
  font-variant-numeric: tabular-nums;
}

.monitor :focus-visible {
  outline-color: var(--monitor-text);
}

.monitor-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  margin-bottom: 0.75rem;
}

.monitor h2 {
  margin: 0;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--monitor-label);
}

.monitor-head p,
.monitor-empty {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--monitor-quiet);
}

.monitor-empty {
  font-size: 1rem;
  padding: 1rem 0;
}

.vitals,
.states {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.vitals {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 9.5rem), 1fr));
}

.states {
  margin-top: 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
}

.vital,
.state {
  display: grid;
  align-content: start;
  gap: 0.15rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--monitor-line);
  border-radius: var(--radius);
  background: var(--monitor-tile);
}

.vital .name,
.state .name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--monitor-label);
}

.vital .reading {
  line-height: 1.1;
}

.vital .value {
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--monitor-value);
  letter-spacing: -0.01em;
}

.vital .unit {
  font-size: 0.875rem;
  color: var(--monitor-label);
}

.state .value {
  font-weight: 600;
  color: var(--monitor-value);
}

.vital.not-known .value,
.state.not-known .value {
  font-size: 1rem;
  font-style: italic;
  font-weight: 600;
  color: var(--monitor-alert);
}

.monitor .change {
  font-size: 0.8125rem;
  color: var(--monitor-text);
}

.monitor .change .arrow {
  display: inline-block;
  margin-right: 0.3rem;
  font-weight: 800;
}

.monitor .taken {
  font-size: 0.75rem;
  color: var(--monitor-quiet);
}

/* The consultant's voice, apart from the record */

.voice {
  margin: 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--voice);
  border-left-width: 4px;
  border-radius: var(--radius-large);
  background: var(--voice-soft);
}

.voice figcaption {
  margin-bottom: 0.25rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--voice);
}

.voice blockquote {
  margin: 0;
  font-size: 1.0625rem;
}

blockquote.consultant {
  margin: 0;
  color: var(--text);
}

.debrief blockquote.consultant {
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--voice);
  border-radius: var(--radius);
  background: var(--voice-soft);
}

.debrief blockquote.consultant > :last-child {
  margin-bottom: 0;
}

/* What the trainee knows: the record */

.known {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.timeline,
.log,
.investigations {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline > li {
  display: grid;
  grid-template-columns: minmax(3.75rem, max-content) minmax(0, 1fr) auto;
  gap: 0.1rem 0.75rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--border);
}

.timeline > li:first-child {
  border-top: none;
  padding-top: 0;
}

.timeline .time {
  grid-row: 1 / span 2;
  padding-top: 0.05rem;
}

.timeline .label {
  grid-column: 2;
  grid-row: 1;
  font-size: 0.875rem;
  color: var(--muted);
}

.timeline .route {
  grid-column: 3;
  grid-row: 1;
  align-self: start;
}

.timeline .value {
  grid-column: 2 / span 2;
  grid-row: 2;
  font-weight: 600;
}

.timeline .value.not-known {
  font-weight: 400;
  font-style: italic;
  color: var(--muted);
}

.time {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--muted);
}

.route {
  padding: 0 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
  white-space: nowrap;
}

.investigations li {
  padding: 0.4rem 0;
  border-top: 1px solid var(--border);
}

.investigations li:first-child {
  border-top: none;
}

.investigations span {
  font-weight: 600;
}

.investigations .ready-to-review {
  color: var(--accent);
}

.investigations .reported {
  color: var(--success);
}

.investigations .unavailable {
  color: var(--danger);
}

.log > li {
  position: relative;
  padding: 0.4rem 0 0.4rem 3.75rem;
  border-top: 1px solid var(--border);
}

.log > li:first-child {
  border-top: none;
}

.log .time {
  position: absolute;
  left: 0;
  top: 0.4rem;
}

.outcome {
  margin-left: 0.25rem;
  color: var(--muted);
  background: var(--sunken);
}

.outcome.done {
  color: var(--success);
  background: var(--success-soft);
}

.outcome.refused,
.outcome.unclear {
  color: var(--danger);
  background: var(--danger-soft);
}

.outcome.typed {
  color: var(--accent);
  background: var(--accent-soft);
}

/* What the trainee does */

.actions {
  display: grid;
  gap: 0.75rem;
}

.actions > h2 {
  margin: 0;
}

.actions > p {
  margin: 0;
}

form.typed {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.5rem;
}

.actions details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
}

.actions summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--target);
  padding: 0.5rem 1rem;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

.actions summary::-webkit-details-marker {
  display: none;
}

.actions summary::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.25rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-0.1rem, -0.1rem);
}

.actions details[open] > summary {
  border-bottom: 1px solid var(--border);
}

.actions details[open] > summary::after {
  transform: rotate(-135deg) translate(-0.1rem, -0.1rem);
}

.choices {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 13rem), 1fr));
  gap: 0.5rem;
  padding: 0.75rem;
}

.choices button {
  justify-content: flex-start;
  text-align: left;
  font-weight: 500;
  border-color: var(--border);
}

.wait {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-large);
  background: var(--sunken);
}

.wait > span {
  margin-right: 0.25rem;
  font-weight: 600;
}

.wait button {
  font-variant-numeric: tabular-nums;
}

/* How an episode ended */

.done {
  border-left-width: 6px;
}

.done.safe-terminal {
  border-left-color: var(--success);
}

.done.unsafe-terminal {
  border-left-color: var(--danger);
}

.done.uncertainty-handover {
  border-left-color: var(--warning);
}

.done h2 {
  margin-top: 0;
}

.done ul {
  margin: 0 0 0.75rem;
}

/* The debrief */

.debrief,
.exam {
  max-width: var(--reading);
}

.debrief {
  display: grid;
  gap: 1rem;
}

.debrief-part {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.debrief-part > h2 {
  margin-top: 0;
}

.debrief-part > :last-child,
.debrief-part li > :last-child {
  margin-bottom: 0;
}

.debrief-part ul {
  margin: 0;
  padding-left: 1.25rem;
}

.debrief-part li {
  margin: 0.4rem 0;
}

.debrief-part.truth {
  border-color: var(--metal);
  border-top-width: 4px;
}

.debrief blockquote {
  margin: 0.5rem 0;
  padding: 0.5rem 0.75rem;
  border-left: 4px solid var(--border-strong);
  background: var(--surface-2);
}

.stage {
  color: var(--muted);
  background: var(--sunken);
}

.critical {
  color: var(--danger);
}

.resolved {
  color: var(--success);
  font-weight: 600;
}

.open {
  color: var(--warning);
  font-weight: 600;
}

.evidence[open] {
  display: grid;
  gap: 0.75rem;
}

.evidence summary {
  min-height: var(--target);
  padding: 0.5rem 0;
  font-weight: 600;
  cursor: pointer;
}

.evidence .card {
  box-shadow: none;
  background: var(--surface-2);
}

.evidence .kind {
  font-weight: 600;
}

/* Exam practice: single best answer questions */

.exam-form {
  display: grid;
  gap: 1rem;
  max-width: 30rem;
  margin-bottom: 1rem;
}

.statement {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
}

.progress {
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stem {
  font-size: 1.0625rem;
}

.question {
  font-size: 1.0625rem;
  font-weight: 700;
}

.options {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0;
  border: none;
}

.option {
  position: relative;
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: start;
  gap: 0.75rem;
  min-height: var(--target);
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-weight: 400;
  cursor: pointer;
}

.option:hover {
  border-color: var(--accent);
}

.option:has(input:checked) {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
  background: var(--accent-soft);
}

.option:has(input:disabled) {
  cursor: default;
}

.option .letter {
  display: grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: var(--sunken);
  font-weight: 700;
  font-size: 0.875rem;
}

.option.best,
.option.best:has(input:checked) {
  border-color: var(--success);
  box-shadow: inset 4px 0 0 var(--success);
  background: var(--success-soft);
}

.option.chosen,
.option.chosen:has(input:checked) {
  border-color: var(--danger);
  box-shadow: inset 4px 0 0 var(--danger);
  background: var(--danger-soft);
}

/* Not by colour alone: the marked options say which they are. */
.option.best::after,
.option.chosen::after {
  grid-column: 3;
  justify-self: start;
  font-size: 0.8125rem;
  font-weight: 700;
}

.option.best::after {
  content: "Best answer";
  color: var(--success);
}

.option.chosen::after {
  content: "Your answer";
  color: var(--danger);
}

.feedback {
  margin-bottom: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: var(--radius-large);
  background: var(--surface);
}

.feedback > :last-child {
  margin-bottom: 0;
}

.feedback .verdict {
  font-weight: 700;
}

.feedback.right {
  border-left-color: var(--success);
}

.feedback.right .verdict {
  color: var(--success);
}

.feedback.wrong {
  border-left-color: var(--danger);
}

.feedback.wrong .verdict {
  color: var(--danger);
}

.source {
  font-size: 0.875rem;
}

.revisit {
  margin: 0.75rem 0;
}

.revisit summary {
  font-weight: 600;
  cursor: pointer;
}

.revisit[open] summary {
  margin-bottom: 0.75rem;
}

/* Case practice: the marked review and the viva */

.verdict.card {
  margin: 1rem 0;
  border-left-width: 6px;
}

.verdict.met {
  border-left-color: var(--success);
}

.verdict.not-yet {
  border-left-color: var(--danger);
}

.verdict.pending {
  border-left-color: var(--warning);
}

.verdict h2 {
  margin-top: 0;
}

.criteria {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.criterion {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.criterion p {
  margin: 0 0 0.2rem;
}

.criterion .mark {
  align-self: start;
  justify-self: start;
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  background: var(--sunken);
  color: var(--muted);
}

.criterion-text {
  font-weight: 600;
}

.criterion.met .mark {
  color: var(--success);
  background: var(--success-soft);
}

.criterion.not-met .mark {
  color: var(--danger);
  background: var(--danger-soft);
}

.viva {
  margin-bottom: 1rem;
}

.viva textarea {
  margin-bottom: 0.75rem;
}

.viva .answer {
  margin: 0 0 1rem;
  padding: 0.5rem 0.75rem;
  border-left: 4px solid var(--border-strong);
  background: var(--surface-2);
  white-space: pre-wrap;
}

.points {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0;
  border: none;
}

.points legend {
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.viva-verdict {
  font-weight: 700;
}

.viva-verdict.met {
  color: var(--success);
}

.viva-verdict.not-met {
  color: var(--danger);
}

/* Wider screens */

@media (min-width: 40rem) {
  :root {
    --gutter: 1.5rem;
  }

  main {
    padding-top: 1.75rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .narrow {
    margin-top: 3rem;
    padding: 2rem;
  }
}

@media (min-width: 60rem) {
  :root {
    --gutter: 2rem;
  }

  .front {
    grid-template-columns: minmax(0, 1fr) 28rem;
    gap: 3rem;
    margin-top: 3rem;
  }

  .columns {
    grid-template-columns: minmax(0, 1.4fr) minmax(22rem, 1fr);
    align-items: start;
  }

  /* The actions stay in view beside a long record, scrolling on their own. */
  .side {
    position: sticky;
    top: 0;
    max-height: 100vh;
    overflow-y: auto;
    overscroll-behavior: contain;
    margin: -1rem -0.5rem 0 0;
    padding: 1rem 0.5rem 1rem 0.25rem;
  }
}

@media (max-width: 30rem) {
  .timeline > li {
    gap: 0.1rem 0.5rem;
  }

  .vital .value {
    font-size: 2rem;
  }

  .known,
  .card,
  .debrief-part {
    padding: 1rem;
  }

  form.typed {
    grid-template-columns: 1fr;
  }

  form.typed button {
    width: 100%;
  }

  .criterion {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  button,
  a.button,
  .option {
    transition:
      background-color 120ms ease,
      border-color 120ms ease,
      box-shadow 120ms ease;
  }
}

@media (forced-colors: active) {
  select {
    appearance: auto;
    background-image: none;
  }

  .brand::before {
    background: CanvasText;
  }

  .option.best::after,
  .option.chosen::after {
    color: CanvasText;
  }
}

/* Mock papers (ADR-0006 decision 8): the timed paper, the navigator, the break and the result. */

.mock-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.mock-paper {
  font-weight: 700;
  margin: 0;
}

.mock-timer {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  margin: 0;
}

.mock-option {
  display: grid;
  /* A fixed column, so an option keeps its width when struck out. */
  grid-template-columns: minmax(0, 1fr) 5.5rem;
  align-items: center;
  gap: 0.5rem;
}

.mock-option .strike {
  justify-self: start;
}

.mock-option.struck .option .text,
.mock-option.struck .option .letter {
  text-decoration: line-through;
  color: var(--muted);
}

.navigator {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(2.6rem, 1fr));
  gap: 0.3rem;
  margin: 1rem 0;
}

.nav-item {
  padding: 0.35rem 0;
  font-variant-numeric: tabular-nums;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.nav-item.answered {
  border-color: var(--metal);
  box-shadow: inset 0 -3px 0 var(--metal);
}

.nav-item.flagged {
  border-color: var(--warning);
  background: var(--warning-soft);
}

.nav-item[aria-current="true"] {
  outline: 2px solid var(--text);
  outline-offset: 1px;
}

button.flag[aria-pressed="true"],
.filters button[aria-pressed="true"] {
  border-color: var(--warning);
  background: var(--warning-soft);
  color: var(--text);
}

.submit-warning,
.abandon-confirm {
  border-left: 4px solid var(--warning);
}

button.flag[aria-pressed="true"]::before {
  content: "\2691  ";
}

.mock-score {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0.25rem 0;
}

.options.reviewed {
  list-style: none;
}

/* A reviewed option has no radio button, and says in its own words
   whether it is the best answer or the trainee's. */
.options.reviewed .option {
  grid-template-columns: auto minmax(0, 1fr);
  cursor: default;
}

.options.reviewed .option::after {
  content: none;
}

.options.reviewed .option:not(.best, .chosen):hover {
  border-color: var(--border-strong);
}

.reason {
  display: block;
  margin-top: 0.25rem;
}

.revisit .right {
  color: var(--success);
}

.revisit .wrong {
  color: var(--danger);
}