/* Home page: hero, today's session, the route, the line of stops, progress summary, ticker,
   questions; also the not-found page */

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 24px 52px;
  padding: 44px 0 40px;
  align-items: start;
}
@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}
.hero h1 {
  margin-bottom: 0.5em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  margin-top: 24px;
}
.hero-actions .btn.ghost,
.hero-actions .btn.ghost:hover {
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  box-shadow: var(--highlight), var(--shadow);
}
.hero-actions .btn.ghost:active {
  box-shadow: var(--highlight), var(--shadow-2);
}
.hero-actions .btn.lesson-start,
.hero-actions .btn.lesson-start:hover,
.hero-actions .btn.lesson-start:active {
  translate: none;
  scale: none;
  transition: none;
  box-shadow: var(--highlight), var(--shadow);
}

/* Line card with its stops */
.linecard {
  background: var(--surface);
  border-radius: 16px;
  padding: 20px 22px 14px;
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  box-shadow: var(--highlight), var(--shadow);
}
.linecard h2 {
  font-size: 26px;
  margin-bottom: 2px;
}
.line-course {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 16px;
}
.line-course .btn {
  width: 100%;
  justify-content: space-between;
}
.stops-wrap {
  position: relative;
  margin-top: 10px;
}
.rail,
.rail-fill {
  position: absolute;
  left: 11px;
  width: 4px;
  border-radius: 2px;
}
.rail {
  background: var(--line);
}
.rail-fill {
  background: var(--ok);
  height: 0;
}
.stops {
  list-style: none;
  margin: 0;
  padding: 0;
}
.stops li a {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 8px 0;
  text-decoration: none;
}
.stops li a:hover .st-title {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--surface);
  border: 4px solid var(--line);
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  transition: scale 0.35s var(--ease-spring);
}
.stops li a:hover .dot {
  scale: 1.14;
}
.st-title,
.st-sub {
  transition: translate 0.35s var(--ease-out);
}
.stops li a:hover .st-title,
.stops li a:hover .st-sub {
  translate: 3px 0;
}
.dot svg {
  width: 14px;
  height: 14px;
}
.stops li.done .dot {
  background: var(--ok);
  border-color: var(--ok);
}
.stops li.next .dot {
  background: var(--signal);
  border-color: var(--text);
}
/* the next stop sends out a slow signal ring */
.stops li.next .dot::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--signal);
  animation: signal 2.4s var(--ease-out) infinite;
  pointer-events: none;
}
@keyframes signal {
  0% {
    transform: scale(0.7);
    opacity: 0.9;
  }
  70%,
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}
.st-title {
  font-weight: 600;
  display: block;
  line-height: 1.2;
}
.st-sub {
  font-size: 14px;
  color: var(--muted);
}
.st {
  font-size: 14px;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.stops li.next .st {
  color: var(--text);
  font-weight: 600;
}

/* A compact link to the detailed progress in Profile */
.home-progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin: 8px 0 32px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.home-progress-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  flex: 1;
  margin: 0;
}
.home-progress dt {
  color: var(--muted);
  font-size: 15px;
}
.home-progress dd {
  margin: 3px 0 0;
  font: 700 28px/1.2 var(--cond);
  font-variant-numeric: tabular-nums;
}
.home-progress dd span {
  color: var(--muted);
  font-size: 19px;
  font-weight: 500;
}
.home-progress > a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
@media (max-width: 640px) {
  .home-progress {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }
  .home-progress-metrics {
    gap: 12px;
  }
  .home-progress > a {
    align-self: flex-start;
  }
}

/* Today's session */
.session {
  margin-top: 28px;
  padding: 18px 20px 8px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  box-shadow: var(--highlight), var(--shadow);
}
.session-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}
.session-head h2 {
  font-size: 24px;
  margin: 0;
}
.session-time {
  font-size: 15px;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.session-time.is-done {
  color: var(--text);
  font-weight: 600;
}
.session-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}
.session-steps li + li {
  border-top: 1px solid var(--line);
}
.session-steps a {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  text-decoration: none;
}
.step-n {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  border: 2px solid var(--line);
  transition: scale 0.35s var(--ease-spring);
}
.step-n svg {
  width: 14px;
  height: 14px;
}
.session-steps li.next .step-n {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--on-signal);
}
.session-steps li.done .step-n {
  background: var(--ok);
  border-color: var(--ok);
}
.step-t b {
  display: block;
  font-weight: 600;
  line-height: 1.25;
}
.step-t span {
  display: block;
  font-size: 14px;
  color: var(--muted);
}
.session-steps li.done .step-t b {
  color: var(--muted);
}
.step-m {
  font-size: 14px;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.session-steps a:hover .step-t b {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.session-steps a:hover .step-n {
  scale: 1.1;
}
.session-foot {
  margin: 4px 0 10px;
}
.session-foot .tlink {
  margin-left: 2px;
}

/* The route across the levels, as one compact line under the hero */
.routemap {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 16px 24px 14px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  box-shadow: var(--highlight), var(--shadow-1);
}
.rm-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.rm-track {
  position: relative;
  flex: 1;
  min-width: 0;
}
.rm-track ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.rm-line,
.rm-fill {
  position: absolute;
  top: 9px;
  left: 11px;
  height: 4px;
  border-radius: 2px;
}
.rm-line {
  width: calc(200% / 3);
  background: var(--line);
}
.rm-fill {
  width: calc(var(--p) * 100% / 3);
  background: var(--ok);
}
.routemap li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-width: 0;
}
.rm-dot {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 22px;
  margin-bottom: 6px;
  border-radius: 50%;
  background: var(--surface);
  border: 4px solid var(--line);
}
.routemap li.done .rm-dot {
  background: var(--ok);
  border-color: var(--ok);
}
.routemap li.now .rm-dot {
  background: var(--signal);
  border-color: var(--text);
}
.rm-stop {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
}
.rm-stop b {
  font: 700 21px/1 var(--cond);
  color: var(--text);
  margin-right: 2px;
}
.rm-stop:hover b {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.rm-cert {
  font-size: 13px;
  font-weight: 600;
}
@media (max-width: 640px) {
  .routemap {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px 16px 12px;
  }
  .rm-stop .num {
    display: block;
  }
}

/* Questions */
.faq-dropdown {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  overflow: hidden;
}
.faq-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}
.faq-toggle::-webkit-details-marker {
  display: none;
}
.faq-toggle h2 {
  margin: 0;
}
.faq-toggle::after {
  content: "";
  width: 10px;
  height: 10px;
  flex: none;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.5s var(--ease-out);
}
.faq-toggle:focus-visible {
  outline-offset: -4px;
}
.faq-dropdown[open] > .faq-toggle {
  border-bottom: 1px solid var(--line);
}
.faq-dropdown[open]:not(.is-closing) > .faq-toggle::after {
  transform: rotate(225deg);
}
.faq-content {
  overflow: hidden;
}
.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  column-gap: 44px;
  margin: 0;
  padding: 0 22px 6px;
}
.faq dt {
  font-weight: 600;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.faq dd {
  margin: 0;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  max-width: 62ch;
}
.faq dt:first-of-type,
.faq dd:first-of-type {
  border-top: 0;
}
@media (max-width: 760px) {
  .faq {
    grid-template-columns: 1fr;
  }
  .faq dt {
    padding-bottom: 4px;
  }
  .faq dd {
    border-top: 0;
    padding-top: 0;
  }
}

/* Not-found page */
.notfound {
  max-width: 640px;
  padding: 48px 0 70px;
}
.notfound .flapboard {
  margin-bottom: 30px;
}

/* Word ticker: a slow strip of the level's words, like a platform ticker. Tap a word to hear it. */
.ticker {
  position: relative;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  border-radius: 14px;
  background: var(--board);
  color: var(--flap-ink);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    var(--shadow-2);
  overflow: hidden;
}
.ticker-viewport {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}
.ticker-track {
  display: flex;
  width: max-content;
}
.ticker-set {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}
.tk {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 22px;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: color 0.2s;
}
.tk b {
  font: 600 20px/1 var(--cond);
  letter-spacing: 0.01em;
}
.tk span {
  font-size: 14px;
  opacity: 0.6;
}
.tk::after {
  content: "";
  position: absolute;
  right: -3px;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 50%;
  background: var(--signal);
}
.tk:hover b {
  color: #8b6900;
}
.tk:focus-visible {
  outline-offset: -4px;
}
.ticker-toggle {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: 0 6px;
  border: 0;
  border-radius: 50%;
  background: rgba(22, 35, 63, 0.08);
  color: var(--flap-ink);
  cursor: pointer;
  transition: background-color 0.2s;
}
.ticker-toggle:hover {
  background: rgba(22, 35, 63, 0.14);
}
.ticker-toggle svg {
  width: 16px;
  height: 16px;
}
.ticker-toggle .i-play,
.ticker-toggle[aria-pressed="true"] .i-pause {
  display: none;
}
.ticker-toggle[aria-pressed="true"] .i-play {
  display: block;
}
/* reduced motion: a still row you can scroll sideways */
.ticker.is-static .ticker-viewport {
  overflow-x: auto;
  mask-image: none;
}
.ticker.is-static .ticker-set[aria-hidden="true"],
.ticker.is-static .ticker-toggle {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .faq-toggle::after {
    transition: none;
  }
  .stops li.next .dot::after {
    animation: none;
    opacity: 0;
  }
}