.cyber-lab {
  max-width: 78rem;
  margin-inline: auto;
}

.cyber-lab-header { max-width: 46rem; margin-bottom: 2rem; }
.cyber-lab-header > a, .cyber-case-sheet footer a {
  color: var(--good);
  text-decoration: underline;
  text-underline-offset: .18em;
  font-size: .87rem;
}
.cyber-lab-header h1 { margin: .7rem 0 .55rem; }
.cyber-lab-header p, .cyber-case-sheet header p { color: var(--muted); margin: 0; }

.cyber-lab-layout {
  display: grid;
  grid-template-columns: minmax(13rem, .85fr) minmax(0, 2.2fr);
  gap: clamp(1.15rem, 3vw, 2.7rem);
  align-items: start;
}

.cyber-case-index h2 { margin: .25rem 0 .85rem; font-size: 1rem; }
.cyber-case-index button {
  display: block;
  min-width: 0;
  width: 100%;
  padding: .75rem .85rem;
  border: 1px solid transparent;
  border-inline-start: 2px solid var(--line);
  border-radius: 0 .45rem .45rem 0;
  background: transparent;
  text-align: start;
}
.cyber-case-index button[aria-current] { border-color: var(--line); border-inline-start-color: var(--good); background: var(--panel); }
.cyber-case-index button span, .cyber-case-index button small { display: block; }
.cyber-case-index button span { font-weight: 650; font-size: .91rem; }
.cyber-case-index button small { margin-top: .18rem; color: var(--muted); font-size: .8rem; }

.cyber-case-sheet {
  min-width: 0;
  padding: clamp(1rem, 3vw, 1.65rem);
  border: 1px solid var(--line);
  border-radius: .7rem;
  background: var(--panel);
}
.cyber-case-sheet header h2 { margin-bottom: .55rem; }
.cyber-case-checklist { list-style: none; padding: 0; margin: 1rem 0 1.3rem; }
.cyber-case-checklist li {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  padding-block: .3rem;
  font-size: .92rem;
}
.cyber-task-mark {
  position: relative;
  flex: 0 0 .85rem;
  height: .85rem;
  border: 1px solid var(--muted);
  border-radius: .2rem;
  align-self: center;
}
.cyber-task-mark.is-done { border-color: var(--good); }
.cyber-task-mark.is-done::after {
  content: "";
  position: absolute;
  inset: 12% 24% 26% 35%;
  border: solid var(--good);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.cyber-terminal {
  color-scheme: dark;
  min-width: 0;
  border: 1px solid #3f514f;
  border-radius: .6rem;
  background: #142020;
  color: #e5eee8;
}
.cyber-terminal-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem .8rem;
  justify-content: space-between;
  padding: .65rem .85rem;
  border-bottom: 1px solid #3f514f;
  background: #21302e;
  border-radius: .6rem .6rem 0 0;
  font-size: .8rem;
}
.cyber-terminal-bar span { color: #b4c9be; }
.cyber-terminal-log {
  height: clamp(8rem, 32vh, 16rem);
  overflow: auto;
  padding: .75rem .85rem;
  scrollbar-width: thin;
}
.cyber-terminal-log:empty::before { content: "$"; color: #b7d6a9; font-family: monospace; }
.cyber-terminal-entry { padding-block: .25rem; font-size: .82rem; }
.cyber-terminal-entry code, .cyber-terminal-entry pre {
  display: block;
  padding: 0;
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  border: 0;
  background: none;
  color: inherit;
}
.cyber-terminal-entry code { color: #b7d6a9; }
.cyber-terminal-entry.is-error pre { color: #ffb1a7; }
.cyber-terminal-form {
  display: flex;
  gap: .5rem;
  align-items: center;
  padding: .55rem .7rem;
  border-top: 1px solid #3f514f;
}
.cyber-terminal-form > span { color: #b7d6a9; font-family: monospace; }
.cyber-terminal-form input {
  flex: 1 1 0;
  min-width: 0;
  padding: .55rem .4rem;
  border-color: transparent;
  background: #142020;
  color: #e5eee8;
  font: .87rem ui-monospace, Consolas, monospace;
}
.cyber-terminal-form input::placeholder { color: #b4c9be; }
.cyber-terminal-form button {
  border-color: #b7d6a9;
  background: #b7d6a9;
  color: #162719;
  padding: .55rem .7rem;
  font-size: .82rem;
  font-weight: 650;
}
.cyber-terminal-form button:hover:not(:disabled) { border-color: #cfe9c1; background: #cfe9c1; }

.cyber-terminal-hints { margin-top: .75rem; font-size: .87rem; }
.cyber-terminal-hints summary { width: fit-content; cursor: pointer; color: var(--good); padding: .4rem 0; }
.cyber-terminal-hints p { margin-block: .45rem; color: var(--muted); }
.cyber-terminal-hints > div { display: flex; flex-wrap: wrap; gap: .45rem; }
.cyber-terminal-hints button { max-width: 100%; min-height: 36px; padding: .35rem .55rem; text-align: start; }
.cyber-terminal-hints button code { overflow-wrap: anywhere; }

.cyber-case-decision { margin-top: 1.45rem; }
.cyber-case-decision fieldset { min-width: 0; margin: 0 0 .85rem; padding: 0; border: 0; }
.cyber-case-decision legend { margin-bottom: .45rem; padding: 0; font-weight: 650; }
.cyber-case-decision fieldset > label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: .65rem;
  min-height: 44px;
  margin: 0;
  padding: .55rem .45rem;
  border-radius: .35rem;
  font-size: .92rem;
  cursor: pointer;
}
.cyber-case-decision fieldset > label:hover,
.cyber-case-decision fieldset > label:has(> input:checked) { background: var(--panel2); }
.cyber-case-decision input[type="radio"] {
  inline-size: 1.05rem;
  block-size: 1.05rem;
  min-block-size: 0;
  margin: .2rem 0 0;
  padding: 0;
  accent-color: var(--good);
  cursor: inherit;
}
.cyber-decision-feedback, .cyber-case-status { margin: .75rem 0 0; font-size: .87rem; color: var(--muted); }
.cyber-decision-feedback.is-done, .cyber-case-status.is-done { color: var(--good); font-weight: 600; }
.cyber-case-sheet footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .45rem 1rem;
  margin-top: 1.2rem;
  padding-top: .8rem;
  border-top: 1px solid var(--line);
}
.cyber-case-sheet footer button { font-size: .82rem; padding: .42rem .65rem; }

@media (max-width: 740px) {
  .cyber-lab-layout { grid-template-columns: minmax(0, 1fr); }
  .cyber-case-index {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .4rem;
  }
  .cyber-case-index h2 { grid-column: 1 / -1; margin-bottom: .25rem; }
  .cyber-case-index button { padding: .55rem .65rem; }
}