/* ==========================================================================
   SHELLQUEST, the text-adventure Linux command-line academy.
   Cold dark-grey ground, phosphor-white ink, terminal-green accent,
   serif room narration over mono chrome. Infocom status bar, box-drawing
   borders, one typewriter moment. (Contract: see index.html.)
   ========================================================================== */

:root {
  --ground: #151515;
  --ground-2: #1b1b1b;
  --ground-3: #212121;
  --ground-4: #282828;
  --line: #333333;
  --line-strong: #484848;
  --ink: #e8e8e8;
  --ink-dim: #b4b4b4;
  --ink-faint: #9c9c9c;
  --accent: #7bc96f;
  --accent-bright: #9fe08f;
  --accent-dim: #6a9e5e;
  --green: #a9dc9a;
  --red: #c96a4d;
  --blue: #7f9dbb;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --serif: Georgia, "Times New Roman", "Liberation Serif", serif;
  --statusbar-h: 34px;
}

* { box-sizing: border-box; }

html { scrollbar-color: var(--line-strong) var(--ground); }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--ground); }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-bright); text-decoration: underline; text-underline-offset: 3px; }

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

/* ---------------------------------------------------------------- status bar */

.statusbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--statusbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  background: var(--ground);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.statusbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }

.statusbar-brand {
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.22em;
}
.statusbar-brand:hover { color: var(--accent-bright); text-decoration: none; }

.statusbar-location {
  color: var(--ink-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.statusbar-right { display: flex; align-items: center; gap: 14px; white-space: nowrap; }

.statusbar-rank { color: var(--ink-faint); letter-spacing: 0.2em; }

.statusbar-metric b {
  color: var(--ink);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------------------------------------- scaffolding */

.view {
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 20px 96px;
  outline: none;
}

.page-title {
  margin: 0 0 6px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-sub { margin: 0 0 26px; color: var(--ink-dim); font-size: 13.5px; }

.hairline { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }

/* ---------------------------------------------------------------- home / foyer */

.foyer {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.foyer-title {
  margin: 34px 0 10px;
  font-size: clamp(2.2rem, 9vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.foyer-tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  color: var(--ink-dim);
  margin: 0 auto 8px;
  max-width: 34ch;
}

.foyer-cursor {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  margin-left: 4px;
  vertical-align: -0.18em;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.foyer-lead {
  max-width: 60ch;
  margin: 22px auto 34px;
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.7;
}

/* entrance exam card */
.exam-card {
  border: 1px solid var(--line-strong);
  background: var(--ground-2);
  padding: 22px 24px 24px;
  margin: 0 auto 30px;
  text-align: left;
  position: relative;
  max-width: 640px;
}
.exam-card::before,
.exam-card::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--accent);
  border-style: solid;
}
.exam-card::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.exam-card::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.exam-title {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.exam-text { margin: 8px 0 14px; color: var(--ink-dim); font-size: 13.5px; line-height: 1.65; }

.exam-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 9px 16px;
  cursor: pointer;
  transition: border-color 0.15s ease-out, color 0.15s ease-out, background 0.15s ease-out;
}
.btn:hover { border-color: var(--accent); color: var(--accent-bright); }
.btn:active { background: var(--ground-3); }
.btn.primary { border-color: var(--accent); color: var(--accent); font-weight: 700; }
.btn.primary:hover { background: var(--accent); color: var(--ground); text-decoration: none; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* the four doors (2×2) */
.doors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  text-align: left;
  margin: 0 0 36px;
}

.door {
  display: block;
  border: 1px solid var(--line);
  background: var(--ground-2);
  padding: 18px 18px 16px;
  position: relative;
  color: var(--ink);
  transition: border-color 0.15s ease-out, transform 0.15s ease-out;
}
.door:hover {
  border-color: var(--accent);
  color: var(--ink);
  text-decoration: none;
  transform: translateY(-2px);
}

.door-name {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.door-title {
  display: block;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.door-blurb {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink-dim);
  line-height: 1.55;
  margin-bottom: 14px;
}

.door-progress { display: block; font-size: 11.5px; color: var(--ink-faint); letter-spacing: 0.1em; }
.door-progress b { color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.door.door-done { border-color: var(--green); }
.door.door-done .door-progress b { color: var(--green); }

.side-doors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  max-width: 640px;
  margin: 0 auto;
}

.side-door {
  display: block;
  border: 1px dashed var(--line-strong);
  padding: 14px 16px;
  color: var(--ink-dim);
  transition: border-color 0.15s ease-out, color 0.15s ease-out;
}
.side-door:hover { border-color: var(--accent); color: var(--accent-bright); text-decoration: none; }
.side-door b { display: block; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); margin-bottom: 4px; }
.side-door:hover b { color: var(--accent-bright); }
.side-door span { font-size: 12px; }

.foyer-reset {
  margin-top: 44px;
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}
.foyer-reset button {
  background: none;
  border: none;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 11.5px;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.foyer-reset button:hover { color: var(--red); }

/* ---------------------------------------------------------------- map (track) */

.map-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.map-head .page-title { margin: 0; }

.lesson-list { list-style: none; margin: 0; padding: 0; }

.lesson-row {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-top: none;
  padding: 13px 16px;
  color: var(--ink);
  transition: border-color 0.12s ease-out, background 0.12s ease-out;
}
.lesson-row:first-child { border-top: 1px solid var(--line); }
.lesson-row:hover { border-color: var(--accent); background: var(--ground-2); text-decoration: none; }
.lesson-row.current { border-left: 2px solid var(--accent); }

.lesson-num {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.14em;
  min-width: 52px;
}

.lesson-title { font-weight: 700; letter-spacing: 0.03em; flex: 1; }

.lesson-state { font-size: 11.5px; letter-spacing: 0.1em; color: var(--ink-faint); white-space: nowrap; }
.lesson-state.solved { color: var(--green); }
.lesson-state.partial { color: var(--accent); }

.map-foot { margin-top: 26px; }

/* ---------------------------------------------------------------- lesson */

.lesson {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.lesson-scroll { min-width: 0; }

.lesson-crumb {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 14px;
}
.lesson-crumb a { color: var(--ink-dim); }
.lesson-crumb a:hover { color: var(--accent); }

.room-title {
  margin: 0 0 4px;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}

.room-no { font-size: 11.5px; letter-spacing: 0.2em; color: var(--ink-faint); margin: 0 0 18px; }

.room-desc {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 10px;
  max-width: 52ch;
}

.typewriter {
  display: inline;
  overflow: hidden;
  white-space: pre-wrap;
  animation: type-in 1.4s steps(28, end);
}

@keyframes type-in { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }

.room-intro {
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.7;
  margin: 0 0 22px;
  max-width: 58ch;
}

.section { margin: 0 0 26px; }

.section h3 {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}

.section p {
  margin: 0 0 10px;
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.7;
  max-width: 60ch;
}

.section p code, .task-prompt code, .room-intro code, .quiz-q code {
  font-family: var(--mono);
  font-size: 0.92em;
  color: var(--accent-bright);
  background: var(--ground-3);
  border: 1px solid var(--line);
  padding: 1px 5px;
  border-radius: 3px;
  white-space: nowrap;
}

.codeblock {
  margin: 10px 0;
  border: 1px solid var(--line);
  background: var(--ground-3);
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.6;
}

.codeblock .line { white-space: pre; }
.codeblock .line.out { color: var(--ink-faint); }

.note {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--ink-faint);
  border: 0;
  border-left: 0;
  padding: 0 0 0 14px;
  position: relative;
  max-width: 60ch;
  line-height: 1.6;
}
.note::before {
  content: "note: ";
  color: var(--accent-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 10.5px;
}

.commands-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
}

.command-chip {
  border: 1px solid var(--line-strong);
  padding: 4px 10px;
  font-size: 12px;
  color: var(--ink-dim);
  cursor: pointer;
  background: none;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  transition: border-color 0.12s ease-out, color 0.12s ease-out;
}
.command-chip:hover { border-color: var(--accent); color: var(--accent-bright); }

/* puzzles (tasks) */
.tasks { margin: 0 0 30px; }
.tasks h3, .quiz h3 {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.task {
  border: 1px solid var(--line);
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--ground-2);
}

.task.solved { border-color: var(--green); }

.task-head { display: flex; align-items: flex-start; gap: 10px; }

.task-mark {
  font-size: 13px;
  color: var(--ink-faint);
  min-width: 20px;
  text-align: center;
  margin-top: 1px;
}
.task.solved .task-mark { color: var(--green); }

.task-prompt { font-size: 13.5px; line-height: 1.6; margin: 0; color: var(--ink); }

.task-hint {
  margin: 8px 0 0 30px;
  font-size: 12px;
  color: var(--ink-faint);
}
.task-hint code { font-family: var(--mono); color: var(--ink-dim); }

.task-reveal {
  margin: 10px 0 0 30px;
  background: transparent;
  border: 1px dashed var(--line-strong);
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color 0.12s ease-out, color 0.12s ease-out;
}
.task-reveal:hover { border-color: var(--accent); color: var(--accent-bright); }
.task-answer { margin: 10px 0 0 30px; }
.task-answer code {
  display: inline-block;
  max-width: 100%;
  background: var(--ground-3);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 10px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.task-solved-line {
  margin: 8px 0 0 30px;
  font-size: 12px;
  color: var(--green);
  letter-spacing: 0.06em;
}

/* quiz */
.quiz-q { margin: 0 0 20px; }

.quiz-q p { margin: 0 0 10px; font-size: 13.5px; line-height: 1.6; }

.quiz-opts { display: grid; gap: 8px; }

.quiz-opt {
  text-align: left;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  padding: 9px 12px;
  cursor: pointer;
  transition: border-color 0.12s ease-out, color 0.12s ease-out, background 0.12s ease-out;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--accent); color: var(--ink); }

.quiz-opt.sel { border-color: var(--accent); color: var(--accent-bright); }

.quiz-opt.correct {
  border-color: var(--green);
  color: var(--green);
  background: rgba(169, 220, 154, 0.08);
}

.quiz-opt.wrong {
  border-color: var(--red);
  color: var(--red);
}

.quiz-opt:disabled { cursor: default; }

.quiz-explain {
  margin: 8px 0 0;
  font-size: 12.5px;
  color: var(--ink-faint);
  line-height: 1.6;
}

.quiz-result {
  border: 1px solid var(--accent);
  padding: 12px 14px;
  font-size: 13.5px;
  color: var(--accent-bright);
  margin-top: 8px;
}

.lesson-exits {
  margin-top: 34px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.lesson-exits a { color: var(--ink-dim); }
.lesson-exits a:hover { color: var(--accent); }

/* ---------------------------------------------------------------- terminal */

.terminal-wrap {
  position: sticky;
  top: calc(var(--statusbar-h) + 18px);
  min-width: 0;
}

.terminal-frame {
  border: 1px solid var(--line-strong);
  background: #0d0d0d;
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.terminal-titlebar .dots { display: flex; gap: 5px; }
.terminal-titlebar .dots i {
  width: 8px;
  height: 8px;
  border: 1px solid var(--line-strong);
  display: inline-block;
  border-radius: 50%;
}
.terminal-titlebar .dots i.on { background: var(--green); border-color: var(--green); }

.terminal {
  height: min(62vh, 560px);
  min-height: 340px;
  overflow-y: auto;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  caret-color: transparent;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  user-select: text;
  -webkit-user-select: text;
}

.terminal .t-line { white-space: pre-wrap; word-break: break-word; min-height: 1.5em; }
.terminal .t-line.in { color: var(--ink); }
.terminal .t-line .prompt { color: var(--accent); }

.terminal .t-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  vertical-align: -2px;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

.terminal-input-row { display: flex; align-items: center; }

.terminal .t-widget-bar {
  position: sticky;
  bottom: 0;
  margin: 8px -14px -12px;
  padding: 6px 14px;
  background: var(--ground-4);
  border-top: 1px solid var(--line-strong);
  color: var(--accent-dim);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* widget box rendering */
.tbox {
  border: 1px solid var(--accent);
  background: var(--ground-2);
  color: var(--ink);
  padding: 10px 14px;
  margin: 8px 0;
  display: inline-block;
  min-width: 240px;
  box-shadow: 0 0 0 3px var(--ground-2), 0 0 0 4px var(--line);
}
.tbox .tbox-title { color: var(--accent); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 8px; }
.tbox .tbox-text { color: var(--ink-dim); font-size: 13px; margin-bottom: 10px; white-space: pre-wrap; }
.tbox .tbox-items { display: grid; gap: 2px; margin-bottom: 10px; }
.tbox .tbox-item { padding: 2px 8px; color: var(--ink-dim); font-size: 13px; }
.tbox .tbox-item.sel { background: var(--accent); color: var(--ground); font-weight: 700; }
.tbox .tbox-buttons { display: flex; gap: 6px; justify-content: center; }
.tbox .tbox-btn { border: 1px solid var(--line-strong); padding: 3px 12px; font-size: 12px; color: var(--ink-faint); }
.tbox .tbox-btn.sel { border-color: var(--accent); color: var(--ink); background: rgba(123, 201, 111, 0.12); }
.tbox .tbox-input { border: 1px solid var(--line-strong); padding: 4px 8px; font-size: 13px; color: var(--ink); min-height: 1.5em; margin-bottom: 10px; }
.tbox .tbox-input .caret { display: inline-block; width: 7px; height: 13px; background: var(--accent); vertical-align: -2px; }

.terminal .term-caption {
  margin: 10px 0 0;
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.terminal-reset {
  margin-top: 10px;
  width: 100%;
  text-align: center;
  border: 1px dashed var(--line-strong);
  background: none;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px;
  cursor: pointer;
  transition: color 0.12s ease-out, border-color 0.12s ease-out;
}
.terminal-reset:hover { color: var(--accent); border-color: var(--accent); }

/* ---------------------------------------------------------------- library */

.library-search {
  width: 100%;
  max-width: 480px;
  background: var(--ground-2);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 10px 12px;
  margin-bottom: 18px;
}
.library-search::placeholder { color: var(--ink-faint); }

.library-list { display: grid; gap: 0; }

.library-item { border: 1px solid var(--line); border-top: none; }
.library-item:first-child { border-top: 1px solid var(--line); }

.library-head {
  width: 100%;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 14px;
  background: none;
  border: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13.5px;
  cursor: pointer;
  text-align: left;
}
.library-head:hover { background: var(--ground-2); }
.library-head .lib-name { font-weight: 700; color: var(--accent); min-width: 130px; }
.library-head .lib-syn { color: var(--ink-dim); font-size: 12.5px; }

.library-body {
  padding: 0 14px 14px;
  border-top: 1px dashed var(--line);
  display: none;
  color: var(--ink-dim);
  font-size: 13px;
  line-height: 1.7;
}
.library-item.open .library-body { display: block; padding-top: 12px; }
.library-body p { margin: 0 0 10px; max-width: 70ch; }
.library-body .opt { margin: 2px 0; }
.library-body .opt b { color: var(--accent); font-weight: 700; }
.library-body .ex { margin: 6px 0; }
.library-body .ex code {
  background: var(--ground-3);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 12.5px;
  color: var(--ink);
  display: inline-block;
  white-space: pre-wrap;
}
.library-body .used { margin-top: 10px; font-size: 12px; color: var(--ink-faint); }
.library-body .used a { color: var(--ink-dim); }
.library-body .used a:hover { color: var(--accent); }
.library-empty { color: var(--ink-faint); font-size: 13px; padding: 10px 0; }

/* ---------------------------------------------------------------- misc */

.noscript { max-width: 60ch; margin: 80px auto; color: var(--accent); }

.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 60;
  border: 1px solid var(--green);
  background: var(--ground-2);
  color: var(--green);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  padding: 10px 16px;
  max-width: 320px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: toast-in 0.25s ease-out;
}

@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------------------------------------------------------------- responsive */

@media (max-width: 960px) {
  .lesson { grid-template-columns: 1fr; }
  .terminal-wrap { position: static; }
  .doors { grid-template-columns: 1fr; }
  .side-doors { grid-template-columns: 1fr; }
  .statusbar-rank { display: none; }
}

@media (max-width: 560px) {
  .statusbar { font-size: 10px; padding: 0 10px; }
  .statusbar-metric { gap: 4px; }
  .view { padding: 20px 14px 80px; }
  .terminal { height: min(55vh, 440px); min-height: 300px; }
}

@media (max-width: 400px) {
  .foyer-title { font-size: 2.05rem; letter-spacing: 0.08em; }
}

@media (prefers-reduced-motion: reduce) {
  .typewriter { animation: none; }
  .t-cursor, .foyer-cursor { animation: none; opacity: 1; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------------------------------------------------------------------------
   The Forge, the workshop bench (learner-authored tools)
--------------------------------------------------------------------------- */
.forge {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.forge-editor {
  display: block;
  width: 100%;
  margin-top: 12px;
  background: var(--ground-3);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  resize: vertical;
  min-height: 260px;
  tab-size: 2;
}
.forge-editor:focus { outline: none; border-color: var(--accent-dim); }
.forge-status {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-dim);
}
.forge-status.ok { color: var(--green); }
.forge-status.err { color: var(--red); }
.forge-button { margin-top: 12px; }
.forge-trials { margin-top: 14px; display: grid; gap: 8px; }
.trial {
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 10px 12px;
  font-size: 12.5px;
  line-height: 1.55;
}
.trial code { color: var(--ink); }
.trial-verdict { margin-left: 8px; color: var(--green); }
.trial.pass { border-color: var(--green); }
.trial.fail { border-color: var(--red); }
.trial-diff {
  margin-top: 6px;
  color: var(--ink-faint);
  font-size: 12px;
  word-break: break-word;
}