/* The public sample uses the practice screen from the Lab's live landing preview. */
.lab-discovery .lab-session-preview {
  --session-ink: #1c244b;
  --session-blue: #2563eb;
  --session-line: #dde4f0;
  --session-muted: #586581;
  border: 1px solid #cbd8ee;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 36px 70px -34px rgb(28 36 75 / 42%), 0 10px 24px -18px rgb(37 99 235 / 35%);
}
.lab-session-preview .fte-lab-proof-top {
  min-height: 56px;
  padding: 8px 18px;
  border-bottom: 1px solid var(--session-line);
  background: white;
}
.lab-session-preview .fte-lab-proof-top h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--session-ink);
  font-size: 16px;
}
.lab-session-preview .fte-lab-proof-top h2::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--session-blue);
}
.lab-session-cast { display: flex; align-items: center; flex-shrink: 0; }
.lab-session-cast img { display: block; width: 34px; height: 34px; }
.lab-session-cast img:first-child { border-radius: 50%; }
.lab-session-cast img + img { width: 30px; margin-left: -5px; }
.lab-session-preview .fte-lab-proof-tabs {
  gap: 4px;
  padding: 7px 10px;
  background: white;
}
.lab-session-preview .fte-lab-proof-tabs button {
  justify-content: flex-start;
  gap: 2px;
  min-height: 55px;
  padding: 6px 9px;
  border: 0;
  background: white;
  box-shadow: none;
}
.lab-session-preview .fte-lab-proof-tabs button[aria-selected=true],
.lab-session-preview .fte-lab-proof-tabs button:hover { background: #edf3ff; }
.lab-session-preview .fte-lab-proof-tabs button::after {
  content: "";
  align-self: stretch;
  height: 3px;
  margin-top: auto;
  border-radius: 4px;
  background: #dbe4f5;
}
.lab-session-preview .fte-lab-proof-tabs button[aria-selected=true]::after { background: var(--session-blue); }
.lab-discovery .lab-session-preview .fte-lab-proof-panel {
  padding: clamp(14px, 2vw, 22px);
  background: linear-gradient(180deg, #fbfcff, #f6f8fd);
}
.lab-session-progress { display: flex; justify-content: space-between; align-items: baseline; gap: 9px; }
.lab-discovery .lab-session-preview .fte-lab-proof-topic {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  clip-path: none;
  overflow: visible;
  white-space: normal;
  color: #2156bf;
  font: 750 11px/1.5 "DM Sans", system-ui, sans-serif;
  letter-spacing: .065em;
  text-transform: uppercase;
}
.lab-session-question { display: none; flex: none; color: var(--session-muted); font: 600 12px/1.5 "DM Sans", system-ui, sans-serif; }
.lab-session-preview[data-proof-ready=true] .lab-session-question { display: inline; }
.lab-session-question span + span { display: none; }
.fte-lab-proof-panel:has([data-follow]:not([hidden])) .lab-session-question span:first-child { display: none; }
.fte-lab-proof-panel:has([data-follow]:not([hidden])) .lab-session-question span + span { display: inline; }
.lab-session-steps { display: none; }
.lab-session-preview[data-proof-ready=true] .lab-session-steps { display: flex; gap: 6px; margin: 8px 0 12px; }
.lab-session-steps i { flex: 1; height: 5px; border-radius: 6px; background: #dbe4f5; }
.lab-session-steps i:first-child { box-shadow: inset 0 0 0 1.5px var(--session-blue); }
.fte-lab-proof-panel.has-answer .lab-session-steps i:first-child,
.fte-lab-proof-panel:has([data-follow-key]:not([hidden])) .lab-session-steps i + i { background: var(--session-blue); }
.fte-lab-proof-panel:has([data-follow]:not([hidden])) .lab-session-steps i + i { box-shadow: inset 0 0 0 1.5px var(--session-blue); }
.lab-session-card {
  margin-top: 10px;
  padding: clamp(14px, 2vw, 22px);
  border: 1px solid var(--session-line);
  border-top: 2px solid var(--session-blue);
  border-radius: 16px;
  background: white;
}
.lab-session-preview .fte-lab-proof-instruction { margin: 0 0 12px; color: var(--session-ink); font-size: 17px; line-height: 1.4; font-weight: 650; }
.lab-session-preview .fte-lab-proof-sentence {
  margin: 0 0 14px;
  padding: 13px 14px;
  border: 1px solid var(--session-line);
  border-radius: 12px;
  background: #f7f9fc;
  font-size: clamp(23px, 2.15vw, 31px);
  font-weight: 650;
  line-height: 1.4;
}
.lab-session-gap {
  display: inline-flex;
  position: relative;
  align-items: baseline;
  min-width: 2.3em;
  justify-content: center;
  border-bottom: 2.5px solid var(--session-blue);
  vertical-align: baseline;
  line-height: 1.15;
}
.lab-session-blank { height: 1em; }
.lab-session-filled { display: none; }
.lab-session-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.has-answer .lab-session-gap { border-color: #176647; color: #176647; }
.has-answer .lab-session-filled { display: inline-block; }
.has-answer .lab-session-blank { display: none; }
.lab-session-preview .fte-lab-proof-choices button { border-width: 1px; border-radius: 10px; }
.lab-session-preview .fte-lab-proof-feedback { border-radius: 12px; }
.lab-session-preview .fte-lab-proof-answer-label { display: flex; align-items: center; gap: 7px; color: var(--session-ink); font-size: 13px; }
.lab-session-seal { display: none; }
.has-answer .lab-session-seal { display: inline-grid; place-items: center; width: 23px; height: 23px; border-radius: 50%; background: var(--session-blue); color: white; font: 750 14px/1 system-ui,sans-serif; }
.lab-session-seal span:first-child { display: none; }
.fte-lab-proof-panel:has([data-proof-correct=true][aria-pressed=true]) .lab-session-seal span:first-child { display: inline; }
.fte-lab-proof-panel:has([data-proof-correct=true][aria-pressed=true]) .lab-session-seal span + span { display: none; }
.lab-session-preview .fte-lab-proof-panel:has([data-proof-correct=true][aria-pressed=true]) .fte-lab-proof-feedback {
  background: #eaf6ef;
  border-left-color: #176647;
}
.lab-session-preview .fte-lab-proof-note { background: white; }
.lab-session-preview .fte-lab-proof-panel:focus-visible { outline-offset: -3px; }
@media (prefers-reduced-motion: no-preference) {
  .has-answer .lab-session-filled { animation: fte-session-reveal 200ms ease-out both; }
  @keyframes fte-session-reveal { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: translateY(0); } }
}
@media (max-width: 520px) {
  .lab-discovery .lab-session-preview { border-radius: 18px; }
  .lab-discovery .lab-session-preview .fte-lab-proof-panel { padding: 12px; }
  .lab-session-preview .fte-lab-proof-tabs { padding-inline: 5px; }
  .lab-session-preview .fte-lab-proof-tabs button { padding-inline: 6px; font-size: 11.5px; }
  .lab-session-preview .fte-lab-proof-sentence { padding: 12px; }
}
@media (max-width: 370px) {
  .lab-session-preview [data-proof-choices] { grid-template-columns: 1fr; }
}