/*
 * app.css — Operator UI: base, shell, layout, components (buttons, cards,
 * badges, forms, segmented controls, dialogs, toasts) and the views built so far.
 * Uses tokens from tokens.css only; no hard-coded colours.
 */

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

html {
  -webkit-text-size-adjust: 100%;
}

/* Component display rules must never defeat the hidden attribute. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--fs-md);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
h1 { font-size: var(--fs-2xl); font-weight: 650; letter-spacing: -0.022em; line-height: 1.1; }
h2 { font-size: var(--fs-lg); }
h3 { font-size: var(--fs-md); }

p { margin: 0; }

a {
  color: var(--accent);
}

:focus-visible {
  outline: var(--focus-ring) solid var(--accent);
  outline-offset: 2px;
}
h1:focus { outline: none; } /* programmatic focus after navigation only */

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: middle;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.muted { color: var(--ink-muted); }
.small { font-size: var(--fs-sm); }
.mono { font-family: var(--font-mono); font-size: 0.92em; }
.lead { font-size: var(--fs-lg); color: var(--ink-muted); max-width: 70ch; }
.eyebrow {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.tabular { font-variant-numeric: tabular-nums; }

/* ---- Skip link & banner ---------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--s2);
  top: -100px;
  z-index: 100;
  padding: var(--s1) var(--s2);
  background: var(--accent);
  color: var(--on-accent);
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--s1); }

.banner {
  display: flex;
  gap: var(--s1);
  align-items: center;
  padding: var(--s1) var(--s3);
  font-size: var(--fs-sm);
}
.banner--warn {
  background: var(--warn-soft);
  color: var(--ink);
  border-bottom: var(--hairline) solid var(--warn);
}
.banner--warn .icon { color: var(--warn); }

/* ---- Shell ---------------------------------------------------------------------------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: var(--hairline) solid var(--line);
}
.app-header__inner {
  display: flex;
  align-items: center;
  gap: var(--s3);
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--s1) var(--s3);
  min-height: 64px;
}
.app-header__tools {
  display: flex;
  align-items: center;
  gap: var(--s1);
  margin-left: auto;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}
.wordmark__mark { color: var(--accent); }
.wordmark__text { display: flex; flex-direction: column; line-height: 1.1; }
.wordmark__name {
  font-weight: 500;
  font-size: 18px;
  letter-spacing: 0.08em;
}
.wordmark__tagline { font-size: 12px; color: var(--ink-muted); letter-spacing: 0.02em; }

.nav ul {
  display: flex;
  gap: var(--s-half);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--s1);
  min-height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  color: var(--ink-muted);
  font-size: var(--fs-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav__link:hover { background: var(--surface-2); color: var(--ink); }
.nav__link[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }

.lang-switch {
  display: inline-flex;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-pill);
  padding: 2px;
}
.lang-switch__btn {
  min-width: 40px;
  min-height: 32px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
}
.lang-switch__btn[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }

.save-status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-half);
  margin-right: var(--s1);
  font-size: var(--fs-sm);
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}
.save-status[data-tone="ok"] .icon { color: var(--ok); }
.save-status[data-tone="warn"],
.save-status[data-tone="danger"] { color: var(--danger); }

.main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--s5) var(--s3) var(--s6);
}
.main:focus { outline: none; }

body.is-bare .app-header,
body.is-bare .skip-link { display: none; }
body.is-bare .main { max-width: none; padding: 0; }

/* ---- Layout -------------------------------------------------------------------------- */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s3);
  margin-bottom: var(--s4);
}
.page-header__text { display: grid; gap: var(--s1); }
.page-header__actions { display: flex; gap: var(--s1); flex-wrap: wrap; }

.grid { display: grid; gap: var(--s3); }
.grid--dashboard { grid-template-columns: 3fr 2fr; }
.grid--two { grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); align-items: start; }
.grid--overview { grid-template-columns: repeat(auto-fit, minmax(min(440px, 100%), 1fr)); align-items: start; }
.grid--cards { grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr)); }
.card--wide { grid-column: 1 / -1; }

.stack { display: grid; gap: var(--s2); }
.stack-sm { display: grid; gap: var(--s1); }
.actions { display: flex; flex-wrap: wrap; gap: var(--s1); align-items: center; }

/* ---- Cards ---------------------------------------------------------------------------- */
.card {
  display: grid;
  gap: var(--s2);
  align-content: start;
  padding: var(--s3);
  background: var(--surface);
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card--hero { box-shadow: var(--shadow); }

.empty {
  display: grid;
  justify-items: center;
  gap: var(--s1);
  padding: var(--s4) var(--s2);
  color: var(--ink-muted);
  text-align: center;
}

.list { list-style: none; margin: 0; padding: 0; }
.list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s2);
  padding: 12px 0;
  border-top: var(--hairline) solid var(--line);
}
.list__item:first-child { border-top: 0; }
.list__main { display: grid; gap: 2px; min-width: 0; }
.list__title { font-weight: 500; }

.bullets { margin: 0; padding-left: 1.2em; display: grid; gap: var(--s-half); }

.resume { display: flex; justify-content: space-between; align-items: center; gap: var(--s2); }
.resume__title { font-weight: 500; }

/* ---- Buttons ---------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s1);
  min-height: 44px; /* touch target */
  padding: 0 var(--s2);
  border: var(--hairline) solid transparent;
  border-radius: var(--radius-pill);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn--secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn--secondary:hover:not(:disabled) { background: var(--surface-2); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover:not(:disabled) { background: var(--surface-2); }
.btn--danger { background: var(--surface); color: var(--danger); border-color: var(--danger); }
.btn--danger:hover:not(:disabled) { background: var(--danger-soft); }
.btn--icon { width: 44px; padding: 0; }
.btn--sm { min-height: 36px; padding: 0 12px; }
.btn--sm.btn--icon { width: 36px; padding: 0; }
/* Instant tooltip for icon-only buttons: the label from data-tip, on mouse hover and keyboard focus.
   display:none when idle so it never adds scrollable overflow. */
.btn[data-tip] { position: relative; }
.btn[data-tip]::after {
  content: attr(data-tip);
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--bg);
  font-size: var(--fs-sm);
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: var(--shadow-sm);
}
.btn[data-tip]:hover::after, .btn[data-tip]:focus-visible::after { display: block; }
.btn[data-tip]:disabled:hover::after { opacity: 0.9; }
/* Keep the tooltip inside the row at the end of a button group. */
.btn[data-tip]:last-child::after { left: auto; right: 0; transform: none; }
.btn--danger-hover:hover { color: var(--danger); }
.btn--lg { min-height: 52px; padding: 0 var(--s3); font-size: var(--fs-md); }

/* ---- Badges ------------------------------------------------------------------------------- */
.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-half);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  line-height: 20px;
  background: var(--surface-2);
  color: var(--ink-muted);
}
.badge--accent { background: var(--accent-soft); color: var(--accent); }
.badge--ok { background: var(--ok-soft); color: var(--ok); }
.badge--warn { background: var(--warn-soft); color: var(--warn); }
.badge--danger { background: var(--danger-soft); color: var(--danger); }
.badge--info { background: var(--info-soft); color: var(--info); }

.notice {
  padding: 12px var(--s2);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--line);
  background: var(--surface-2);
}
.notice--warn { border-left-color: var(--warn); background: var(--warn-soft); }

/* ---- Forms -------------------------------------------------------------------------------- */
.field { display: grid; gap: 6px; align-content: start; min-width: 0; }
.field--grow { flex: 1 1 260px; }
.field__label { font-size: var(--fs-sm); font-weight: 600; color: var(--ink); padding: 0; }
.field__hint { font-size: var(--fs-sm); color: var(--ink-muted); }

.input {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  background: var(--surface);
  color: var(--ink);
  border: var(--hairline) solid var(--line-strong);
  border-radius: var(--radius-sm);
  font: inherit;
}
.input:hover { border-color: var(--ink-muted); }
.input:focus-visible { outline-offset: 0; border-color: var(--accent); }
.input--sm { min-height: 36px; font-size: var(--fs-sm); }
select.input { padding-right: 32px; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  align-items: end;
  margin-bottom: var(--s3);
}
.toolbar .field:not(.field--grow) { flex: 0 1 240px; }

.form-section > h2 { margin-bottom: var(--s-half); }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--s3);
  align-items: start;
}

fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.fieldset { display: grid; gap: var(--s1); padding-top: var(--s1); }
.segmented-field { display: grid; gap: 6px; }

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--s-half);
  padding: var(--s-half);
  background: var(--surface-2);
  border-radius: var(--radius);
  justify-self: start;
}
.segmented--wrap { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr)); justify-self: stretch; }
.segmented__option { position: relative; display: flex; }
.segmented__option input {
  position: absolute;
  opacity: 0;
  inset: 0;
  margin: 0;
  cursor: pointer;
}
.segmented__label {
  display: grid;
  gap: 2px;
  align-content: center;
  width: 100%;
  min-height: 40px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink-muted);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.segmented__label small { font-size: 12px; font-weight: 400; }
.segmented__option input:checked + .segmented__label {
  background: var(--surface);
  color: var(--ink);
  box-shadow: inset 0 0 0 var(--hairline) var(--line), var(--shadow);
}
.segmented__option input:checked + .segmented__label > span:first-child::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--accent); /* plus weight/contrast change: state is not colour-only */
}
.segmented__option input:focus-visible + .segmented__label {
  outline: var(--focus-ring) solid var(--accent);
  outline-offset: 1px;
}

.check {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  min-height: 32px;
  padding: 4px 0;
  cursor: pointer;
}
.check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--accent);
  flex: none;
}
.check-row { display: flex; flex-wrap: wrap; gap: var(--s1) var(--s3); }

.role-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--s-half) var(--s3);
}
.role-row { display: grid; gap: var(--s-half); align-content: start; }

.range-row { display: flex; align-items: center; gap: var(--s2); }
.range { flex: 1; accent-color: var(--accent); min-height: 44px; }
.range-value {
  min-width: 2.5ch;
  font-size: var(--fs-xl);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.inline-add { display: flex; flex-wrap: wrap; gap: var(--s1); align-items: end; }
.inline-add > .input { flex: 1 1 200px; }

.chip-list { display: flex; flex-wrap: wrap; gap: var(--s1); margin: 0; padding: 0; list-style: none; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-half);
  padding-left: 12px;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  background: var(--surface-2);
}

/* ---- Wizard -------------------------------------------------------------------------------- */
.wizard { display: grid; gap: var(--s3); }
.advanced > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  cursor: pointer;
  min-height: 44px;
}
.advanced > summary::-webkit-details-marker { display: none; }
.advanced__chevron { transition: transform var(--dur) var(--ease); color: var(--ink-muted); }
.advanced[open] .advanced__chevron { transform: rotate(180deg); }
.advanced[open] > summary { margin-bottom: var(--s1); }
.wizard__footer {
  position: sticky;
  bottom: 0;
  display: flex;
  justify-content: flex-end;
  padding: var(--s2) 0;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
}

/* ---- Library -------------------------------------------------------------------------------- */
.results { display: grid; gap: var(--s2); }
.scenario-card { grid-template-rows: auto auto auto 1fr auto auto; }
.scenario-card__head { display: flex; gap: var(--s2); align-items: flex-start; }
.scenario-card__title { font-size: var(--fs-lg); margin-bottom: var(--s1); }
.scenario-card__summary { color: var(--ink-muted); }
.emblem {
  display: grid;
  place-items: center;
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---- Dialogs -------------------------------------------------------------------------------- */
.dialog {
  width: min(520px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  padding: 0;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.dialog--wide { width: min(760px, calc(100vw - 32px)); }
.dialog::backdrop { background: rgba(17, 22, 27, 0.45); }
.dialog__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s2);
  padding: var(--s2) var(--s2) var(--s1) var(--s3);
}
.dialog__body { padding: var(--s1) var(--s3) var(--s2); overflow: auto; }
.dialog__footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--s1);
  padding: var(--s2) var(--s3);
  border-top: var(--hairline) solid var(--line);
}

/* ---- Toasts -------------------------------------------------------------------------------- */
.toasts {
  position: fixed;
  right: var(--s3);
  bottom: var(--s3);
  z-index: 50;
  display: grid;
  gap: var(--s1);
  max-width: min(420px, calc(100vw - 48px));
}
.toast {
  display: flex;
  gap: var(--s1);
  align-items: flex-start;
  padding: 12px var(--s2);
  background: var(--surface);
  color: var(--ink);
  border: var(--hairline) solid var(--line);
  border-left: 3px solid var(--info);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  font-size: var(--fs-sm);
  animation: toast-in var(--dur) var(--ease);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.toast.is-leaving { opacity: 0; transform: translateY(8px); }
.toast--ok { border-left-color: var(--ok); }
.toast--ok .icon { color: var(--ok); }
.toast--warn { border-left-color: var(--warn); }
.toast--warn .icon { color: var(--warn); }
.toast--danger { border-left-color: var(--danger); }
.toast--danger .icon { color: var(--danger); }
.toast--info .icon { color: var(--info); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ---- Responsive -------------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .app-header__inner { flex-wrap: wrap; gap: var(--s1) var(--s2); }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  .grid--dashboard { grid-template-columns: 1fr; }
}
/* Icons only once the labelled menu no longer fits on one row (the labels stay for screen readers). */
@media (max-width: 720px) {
  .nav__link span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
}
@media (max-width: 560px) {
  h1 { font-size: var(--fs-xl); }
  .main { padding: var(--s3) var(--s2) var(--s5); }
  .grid--cards, .grid--two { grid-template-columns: 1fr; }
  .wordmark__tagline { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0ms !important;
  }
}

/* ---- Exercise preview (editor) ---------------------------------------------------------- */
.section-title { margin-top: var(--s2); }
.notice { display: flex; gap: var(--s1); align-items: flex-start; }
.notice--danger { display: block; border-left-color: var(--danger); background: var(--danger-soft); }
.notice--ok { border-left-color: var(--ok); background: var(--ok-soft); }
.notice--ok .icon { color: var(--ok); }
.notice__title { display: flex; gap: var(--s1); align-items: center; font-weight: 600; margin-bottom: var(--s1); }
.notice__title .icon { color: var(--danger); }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px var(--s2); margin: 0; }
.kv dt { color: var(--ink-muted); font-size: var(--fs-sm); }
.kv dd { margin: 0; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.table th { text-align: left; font-weight: 600; color: var(--ink-muted); padding: 8px; border-bottom: var(--hairline) solid var(--line); }
.table td { padding: 8px; border-bottom: var(--hairline) solid var(--line); vertical-align: middle; }
.avatar {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.pacing { list-style: none; margin: 0; padding: 0; }
.pacing li { display: flex; justify-content: space-between; gap: var(--s2); padding: 6px 0; border-top: var(--hairline) solid var(--line); font-size: var(--fs-sm); }
.pacing li:first-child { border-top: 0; }

.fact-list, .inject-list, .question-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.fact-list li { display: grid; gap: 6px; justify-items: start; }
.timeline-list { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; font-size: var(--fs-sm); }
.timeline-list li { display: grid; grid-template-columns: minmax(150px, max-content) 1fr; gap: var(--s2); }

.stage-preview > summary {
  display: flex;
  align-items: center;
  gap: var(--s2);
  list-style: none;
  cursor: pointer;
  min-height: 44px;
}
.stage-preview > summary::-webkit-details-marker { display: none; }
.stage-preview[open] > summary { margin-bottom: var(--s1); }
.stage-preview[open] .advanced__chevron { transform: rotate(180deg); }
.stage-preview__num {
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.stage-preview__title { display: grid; flex: 1; min-width: 0; }
.twist-preview { padding: 12px var(--s2); border-left: 3px solid var(--warn); background: var(--warn-soft); border-radius: var(--radius-sm); display: grid; gap: 4px; }

.inject { padding: 12px var(--s2); border: var(--hairline) solid var(--line); border-radius: var(--radius-sm); display: grid; gap: 6px; }
.inject__head { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.inject__time { font-weight: 600; margin-right: var(--s-half); }
.inject__headline { font-weight: 600; }
.facilitator-text { font-size: var(--fs-sm); color: var(--ink-muted); display: grid; gap: 4px; }
.branch { padding-left: var(--s2); border-left: 2px dashed var(--line); }
.question-list li { display: grid; gap: 4px; }
.decision-preview__q { font-weight: 600; font-size: var(--fs-lg); }
.options { margin: var(--s1) 0 0; padding-left: 1.6em; display: grid; gap: 4px; }

/* Emblem badge sits on the surface so the badge icon reads over the main icon. */
.emblem-badge { fill: var(--surface); }
.emblem { width: 64px; height: 64px; background: transparent; }

/* ---- Print root, facilitation forms, editor, history ---------------------------- */
#print-root { display: none; }

.fx-form { display: grid; gap: 10px; }
.form-grid--tight { gap: var(--s2); grid-template-columns: repeat(auto-fit, minmax(min(160px, 100%), 1fr)); }
.fx-obs-list, .fx-objectives { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.fx-obs { display: grid; gap: 6px; padding: 12px; border: var(--hairline) solid var(--line); border-radius: var(--radius-sm); }
/* Improvement plan */
.fx-plan { display: grid; gap: 12px; }
.fx-plan__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: plan; }
.fx-plan__item { display: grid; gap: 8px; padding: 12px; border: var(--hairline) solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius-sm); }
.fx-plan__item--progress { border-left-color: var(--info); }
.fx-plan__item--done { border-left-color: var(--ok); opacity: 0.8; }
.fx-plan__item--dropped { border-left-color: var(--line-strong); opacity: 0.65; }
.fx-plan__item.is-overdue { border-left-color: var(--warn); }
.fx-plan__head { display: flex; gap: 8px; align-items: center; }
.fx-plan__text { flex: 1; font-weight: 600; }
.fx-plan__new summary { cursor: pointer; font-weight: 600; margin-bottom: 8px; }
.fx-plan__new[open] { display: grid; gap: 8px; }
.fx-plan__suggestions { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.fx-plan__suggestions li { display: flex; gap: 12px; align-items: center; justify-content: space-between; padding: 8px 12px; background: var(--surface-2); border-radius: var(--radius-sm); }
.fx-plan__suggestion { display: grid; gap: 2px; }
.history-actions { margin-top: var(--s3); }
.history-actions__item .list__main { text-decoration: none; color: inherit; display: grid; gap: 4px; }
.fx-obs .actions select { width: auto; min-height: 36px; }
.fx-objective { display: grid; gap: 6px; padding-bottom: 12px; border-bottom: var(--hairline) solid var(--line); }
.fx-objective:last-child { border-bottom: 0; }
.fx-objective__text { font-weight: 500; }
.fx-objective__teaser { margin-top: -0.25rem; font-style: italic; }
.fx-scorecard { display: grid; gap: 12px; }

.pres-fold > summary { display: flex; align-items: center; gap: var(--s1); cursor: pointer; list-style: none; min-height: 36px; }
.pres-fold > summary::-webkit-details-marker { display: none; }
.pres-fold > summary h2 { flex: 1; }
.pres-fold[open] > summary { margin-bottom: var(--s1); }

.editable { font: inherit; line-height: 1.45; background: var(--surface); }
.editable--title { font-size: var(--fs-lg); font-weight: 600; }
.inject.is-disabled { opacity: 0.55; }
.inject.is-disabled .inject__headline, .inject.is-disabled p { text-decoration: line-through; }
.inject__timeedit { display: inline-flex; align-items: center; gap: 6px; }
.input--num { width: 96px; }
.input--auto { width: auto; }
.slide-order { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font-size: var(--fs-sm); }
.slide-order li { display: grid; grid-template-columns: 2ch 1fr auto; gap: var(--s1); align-items: center; padding: 4px 8px; border-radius: var(--radius-sm); background: var(--surface-2); }
.slide-order__btns { display: inline-flex; gap: 2px; }
.slide-order__btns .btn--icon .icon { transform: rotate(90deg); }

.strike { text-decoration: line-through; color: var(--ink-muted); }
.history-item.is-archived { opacity: 0.7; }
.history-item .badges { align-items: center; }
/* Six equal icon buttons on one row, centred on the row's midline, never wrapping. */
.history-item__actions { flex: none; flex-wrap: nowrap; gap: 6px; align-items: center; }
.history-item__actions .btn { display: inline-grid; place-items: center; }
.history-item__actions .btn:disabled { opacity: 0.35; }
.debrief .chart-svg { max-height: 480px; }

/* Charts outside the stage (debrief, print): operator-scale legend and the timeline event list. */
.debrief .c-legend, #print-root .c-legend { font-size: var(--fs-sm); gap: 8px 24px; }
.debrief .c-swatch, #print-root .c-swatch { width: 14px; height: 14px; border-radius: 3px; }
.debrief .c-swatch--diamond, #print-root .c-swatch--diamond { width: 11px; height: 11px; }
.c-tl-list { margin: 0; padding-left: 2.2em; display: grid; gap: 4px; font-size: var(--fs-sm); }
.c-tl-list__item { display: grid; grid-template-columns: 14px minmax(110px, max-content) minmax(90px, max-content) 1fr; gap: 10px; align-items: baseline; }
.c-tl-list__item .c-swatch { width: 12px; height: 12px; border-radius: 3px; background: var(--c); }
.c-tl-list__item .c-swatch--diamond { width: 10px; height: 10px; }
.c-tl-list__time { font-variant-numeric: tabular-nums; color: var(--ink-muted); }
.c-tl-list__kind { color: var(--ink-muted); }
/* Card rows stretch to align actions; the objective list itself must not spread out. */
.scenario-card .bullets { align-content: start; }

/* ---- Branching: page map in the editor and debrief ------------------------------------------- */
.routemap-wrap { position: relative; overflow-x: auto; }
.routemap-wrap .routemap { min-width: 720px; width: 100%; height: auto; }
@media (min-width: 820px) { .routemap-wrap { overflow: visible; } }

/* Debrief route map: decision points with tooltips, more height, a glowing route. */
.routemap--spread .rm-edge { stroke-width: 2.5; stroke-dasharray: 2 8; stroke-linecap: round; }
.routemap--spread .rm-edge--route { stroke-width: 8; stroke-dasharray: none; filter: drop-shadow(0 0 8px color-mix(in srgb, var(--accent) 55%, transparent)); }
.rm-hit { fill: transparent; }
.rm-node[tabindex] { cursor: pointer; outline: none; }
.rm-node[tabindex] .rm-mark { transition: transform var(--dur-1) var(--ease); transform-box: fill-box; transform-origin: center; }
.rm-node[tabindex]:hover .rm-mark, .rm-node[tabindex]:focus-visible .rm-mark { transform: scale(1.18); }
.rm-node[tabindex]:focus-visible .rm-mark { stroke: var(--ink); stroke-width: 4; }
.rm-node--point:not(.is-visited) .rm-mark { fill: var(--surface); stroke: var(--accent); stroke-width: 3; stroke-dasharray: 5 4; }
.rm-node--point.is-visited .rm-mark { filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 60%, transparent)); }
.rm-node--point:not(.is-visited) .rm-num { fill: var(--ink); }

.rm-tip {
  position: absolute; z-index: 30; width: max-content; max-width: 380px; padding: 12px 14px;
  background: var(--surface); color: var(--ink); border: var(--hairline) solid var(--line-strong); border-radius: var(--radius);
  box-shadow: var(--shadow-lift); font-size: var(--fs-sm); line-height: 1.4; pointer-events: none;
}
.rm-tip[hidden] { display: none; }
.rm-tip p { margin: 0; }
.rm-tip__head { display: flex; align-items: center; gap: var(--s1); margin-bottom: 4px !important; }
.rm-tip__num { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent); }
.rm-tip__kind { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.rm-tip__title { font-weight: 600; }
.rm-tip__q { margin-top: 6px !important; color: var(--ink-muted); }
.rm-tip__opts { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 4px; }
.rm-tip__opt { display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; gap: 8px; align-items: start; padding: 5px 6px; border-radius: var(--radius-sm); }
.rm-tip__opt.is-chosen { background: var(--accent-soft); }
.rm-tip__key { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 6px; background: var(--surface-2); font-weight: 700; font-size: 12px; }
.rm-tip__opt.is-chosen .rm-tip__key { background: var(--accent); color: var(--on-accent); }
.rm-tip__text { display: grid; gap: 1px; }
.rm-tip__to { font-size: 12px; color: var(--ink-muted); }
.rm-tip__badge { display: inline-flex; align-items: center; gap: 3px; font-size: 11px; font-weight: 700; color: var(--accent); white-space: nowrap; }
.rm-tip__note { margin-top: 8px !important; font-style: italic; color: var(--ink-muted); }
.variant { display: grid; gap: 6px; padding-left: var(--s2); border-left: 3px solid var(--line); }
.stage-preview__num { min-width: 2.6em; }

/* ==== Refinements and motion (part 4: calm, editorial) ===================================== */

/* Route entrance: the new view rises in once, its first blocks lightly staggered.
   app.js sets .is-entering on <main> for each navigation only, never on re-renders. */
.main.is-entering > * { animation: rise var(--dur-3) var(--ease) both; }
.main.is-entering > *:nth-child(2) { animation-delay: 40ms; }
.main.is-entering > *:nth-child(3) { animation-delay: 80ms; }
.main.is-entering > *:nth-child(n + 4) { animation-delay: 120ms; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
@keyframes pop { 0% { transform: scale(0.6); opacity: 0; } 100% { transform: none; opacity: 1; } }

/* Buttons: quiet transitions and a tactile press. */
.btn { transition: background-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), box-shadow var(--dur-2) var(--ease), transform var(--dur-1) var(--ease), filter var(--dur-1) var(--ease); }
.btn:active:not(:disabled) { transform: translateY(1px) scale(0.98); }
.btn--primary { box-shadow: 0 1px 2px color-mix(in srgb, var(--accent) 30%, transparent); }
.btn--primary:hover:not(:disabled) { box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 28%, transparent); }
.nav__link, .lang-switch__btn, .segmented__label, .input { transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease); }
.save-status[data-tone="ok"] .icon { animation: pop var(--dur-3) var(--ease-emph); }

/* Dialogs scale in from just below; the backdrop fades. */
.dialog[open] { animation: dialog-in var(--dur-3) var(--ease-emph); border-radius: var(--radius-lg); box-shadow: var(--shadow-lift); }
.dialog[open]::backdrop { animation: fade-in var(--dur-3) var(--ease); }
@keyframes dialog-in { from { opacity: 0; transform: translateY(10px) scale(0.98); } }
@keyframes fade-in { from { opacity: 0; } }

/* Interactive cards lift a little on hover and focus. */
.card--interactive, .format-card, .scenario-card {
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.format-card:hover, .format-card:focus-visible, .scenario-card:hover, .scenario-card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

/* ---- Dashboard hero ---------------------------------------------------------------------- */
.hero {
  position: relative;
  display: grid;
  min-height: 380px;
  margin-bottom: var(--s5);
  overflow: hidden;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.hero__art { position: absolute; inset: 0; }
.hero__art .ill { display: block; width: 100%; height: 100%; }
/* A scrim keeps the text on the left readable over the landscape. Its stops follow the text column
   (max 620px), not the card width, so on a narrow card the route still sits behind solid surface. */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, var(--surface) 0, var(--surface) 600px, color-mix(in srgb, var(--surface) 70%, transparent) 680px, transparent 820px);
}
.hero__body { position: relative; z-index: 2; display: grid; gap: var(--s2); align-content: center; max-width: 620px; padding: var(--s5); }
.hero__eyebrow { color: var(--accent); }
.hero__title { font-size: clamp(32px, 4.2vw, 48px); max-width: 16ch; }
.hero__lead { font-size: var(--fs-lg); }
.hero__stats { display: flex; flex-wrap: wrap; gap: var(--s2) var(--s4); margin: var(--s2) 0 0; padding: 0; list-style: none; }
.hero__stat { display: grid; }
.hero__stat strong { font-size: var(--fs-xl); font-weight: 650; line-height: 1.1; letter-spacing: -0.02em; }
.hero__stat span { font-size: var(--fs-sm); color: var(--ink-muted); }

/* Illustration colours: theme tokens only. */
.ill-sky-top { stop-color: var(--surface); }
.ill-sky-bottom { stop-color: var(--accent-soft); }
.ill-star { fill: var(--accent); opacity: 0.35; }
.ill-moon { fill: var(--accent); opacity: 0.22; }
.ill-moon-halo { fill: var(--accent); opacity: 0.08; }
.ill-ridge { stroke: none; }
.ill-ridge--far { fill: var(--accent); opacity: 0.1; }
.ill-ridge--mid { fill: var(--accent); opacity: 0.18; }
.ill-ridge--near { fill: var(--accent); opacity: 0.3; }
.ill-route { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 1; animation: ill-draw 1600ms var(--ease) 200ms both; }
.ill-route--tail { animation-delay: 1500ms; animation-duration: 500ms; }
.ill-branch { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 4 7; opacity: 0.5; }
.ill-node { fill: var(--surface); stroke: var(--accent); stroke-width: 3; transform-box: fill-box; transform-origin: center; animation: pop var(--dur-3) var(--ease-emph) both; animation-delay: calc(var(--i, 0) * 180ms + 300ms); }
.ill-node--last { fill: var(--accent); }
.ill-ending { fill: var(--ok); opacity: 0.85; }
/* Visible by default; the animation only reveals it (nothing is lost where animations don't run). */
@keyframes ill-draw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }

/* Empty states: small line drawings in muted ink with one accent detail. */
.ill--empty { width: 160px; height: 96px; color: var(--ink-muted); }
.ill-line { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ill-fill { fill: var(--surface); }
.ill-faint { opacity: 0.45; }
.ill-dash { stroke-dasharray: 3 6; }
.ill-accent-line { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.ill-accent-fill { fill: var(--accent); }
.ill-mark { fill: var(--accent); font-size: 30px; font-weight: 700; font-family: var(--font); }
.empty p { max-width: 36ch; }

/* ---- Dashboard: formats, session, recent -------------------------------------------------- */
.formats { display: grid; gap: var(--s2); margin-bottom: var(--s5); }
.format-card { gap: var(--s1); color: inherit; text-decoration: none; }
.format-card__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: var(--s1);
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent);
}
.format-card--branching .format-card__icon { background: color-mix(in srgb, var(--series-4) 14%, var(--surface)); color: var(--series-4); }
.format-card__title { font-size: var(--fs-lg); }
.format-card__body { color: var(--ink-muted); max-width: 52ch; }
.format-card__more { display: inline-flex; align-items: center; gap: 6px; margin-top: var(--s1); color: var(--accent); font-weight: 600; font-size: var(--fs-sm); }
.format-card__more .icon { transition: transform var(--dur-2) var(--ease); }
.format-card:hover .format-card__more .icon { transform: translateX(3px); }
.grid--dashboard { align-items: start; }
.resume__who { display: flex; align-items: center; gap: var(--s2); min-width: 0; }
.resume__who .emblem-svg { color: var(--accent); flex: none; }
.list__emblem { flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); }
.list__item--link { justify-content: flex-start; padding-left: var(--s1); padding-right: var(--s1); margin: 0 calc(-1 * var(--s1)); border-radius: var(--radius-sm); transition: background-color var(--dur-2) var(--ease); }
.list__item--link .list__main { flex: 1; }
.list__item--link:hover { background: var(--surface-2); }

/* ---- Library cards ----------------------------------------------------------------------- */
.scenario-card { grid-template-rows: auto 1fr auto auto; gap: var(--s2); }
.scenario-card__heading { display: grid; gap: 4px; min-width: 0; }
.scenario-card__category { color: var(--ink-muted); }
.scenario-card .emblem { background: color-mix(in srgb, var(--hue, var(--accent)) 14%, var(--surface)); color: var(--hue, var(--accent)); }
.scenario-card__title { margin-bottom: 0; line-height: 1.25; }
.scenario-card__summary { align-self: start; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.scenario-card__meta { display: flex; align-items: center; gap: 8px; margin: 0; padding-top: 12px; border-top: var(--hairline) solid var(--line); font-size: var(--fs-sm); color: var(--ink-muted); }
.scenario-card__meta--branching .icon { color: var(--series-4); }

@media (max-width: 760px) {
  .hero::before { background: linear-gradient(180deg, var(--surface) 55%, color-mix(in srgb, var(--surface) 60%, transparent) 100%); }
  /* Stacked, the art lies under the text: keep the landscape, drop the route and its marks. */
  .hero .ill-route, .hero .ill-node, .hero .ill-branch, .hero .ill-ending { display: none; }
  .hero__body { padding: var(--s3); }
}

/* ---- Exercise builder ---------------------------------------------------------------------------------------- */
.main:has(> .builder) { max-width: 1680px; padding-top: var(--s3); }
.builder { display: grid; gap: var(--s2); }
.builder__head { display: flex; align-items: flex-end; gap: var(--s2); flex-wrap: wrap; }
.builder__titles { display: grid; gap: var(--s-half); min-width: 0; }
.builder__title { margin: 0; font-size: var(--fs-xl); overflow-wrap: anywhere; }
.builder__head .actions { display: flex; align-items: center; gap: var(--s1); flex-wrap: wrap; }
.builder__status { margin-left: auto; min-width: 12ch; text-align: right; padding-bottom: 6px; }

.builder__toolbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; flex-wrap: wrap; align-items: stretch; gap: var(--s1) var(--s2);
  padding: var(--s1) var(--s2);
  background: var(--surface); border: var(--hairline) solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.builder__tb-group { display: grid; gap: 2px; align-content: start; padding-right: var(--s2); border-right: var(--hairline) solid var(--line); }
.builder__tb-group:last-child { border-right: 0; padding-right: 0; }
.builder__tb-label { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.builder__tb-items { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-half); }
.builder__tb-text { min-width: 32px; justify-content: center; font-size: 15px; }
.builder__b { font-weight: 800; }
.builder__i { font-style: italic; font-family: Georgia, serif; }
.builder__u { text-decoration: underline; }
.builder__select { width: auto; max-width: 180px; }
.builder__timer { position: relative; display: inline-flex; align-items: center; gap: var(--s-half); }
.builder__timer .input { width: 64px; }
.builder__timer[data-tip]:hover::after {
  content: attr(data-tip); position: absolute; top: calc(100% + 6px); left: 0; z-index: 20; width: max-content; max-width: 260px;
  padding: 6px 10px; border-radius: var(--radius-sm); background: var(--ink); color: var(--surface); font-size: 13px; line-height: 1.35;
}

.builder__body { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: var(--s2); align-items: start; }
.builder__side { display: grid; gap: var(--s1); position: sticky; top: 96px; max-height: calc(100vh - 120px); overflow: auto; padding-right: 4px; }
.builder__list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s1); counter-reset: none; }
.builder__thumb { position: relative; border-radius: var(--radius-sm); }
.builder__thumb.is-drop::before { content: ""; position: absolute; left: 26px; right: 0; top: -5px; height: 3px; border-radius: 2px; background: var(--accent); }
.builder__thumb-btn {
  position: relative; display: grid; grid-template-columns: 20px minmax(0, 1fr); gap: 6px; align-items: start; width: 100%;
  padding: 0; border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.builder__thumb-num { padding-top: 4px; text-align: right; font-size: 12px; color: var(--ink-muted); font-variant-numeric: tabular-nums; }
.builder__thumb-btn .stage-frame { border: 2px solid var(--line); border-radius: 8px; pointer-events: none; transition: border-color var(--dur-1); }
.builder__thumb-btn:hover .stage-frame { border-color: var(--line-strong); }
.builder__thumb-btn:focus-visible { outline: none; }
.builder__thumb-btn:focus-visible .stage-frame { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.builder__thumb.is-current .stage-frame { border-color: var(--accent); }
.builder__thumb.is-current .builder__thumb-num { color: var(--accent); font-weight: 700; }
.builder__thumb-notes { position: absolute; right: 6px; bottom: 6px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--surface); color: var(--ink-muted); box-shadow: var(--shadow-sm); }

.builder__main { display: grid; gap: var(--s2); min-width: 0; }
.builder__canvas { min-width: 0; }
.builder__canvas > .stage-frame { max-width: calc((100vh - 300px) * 16 / 9); min-width: min(100%, 640px); margin: 0 auto; }
.builder__frame { box-shadow: var(--shadow); border-radius: 12px; }
.builder__frame .stage { pointer-events: auto; }
.builder__notes { display: grid; gap: var(--s1); }

.builder-gallery { display: grid; gap: var(--s3); }
.dialog--wide:has(.builder-gallery), .dialog--wide:has(.builder-icons) { width: min(1180px, calc(100vw - 32px)); }
.builder-gallery__group { display: grid; gap: var(--s1); }
.builder-gallery__group h3 { margin: 0; }
.builder-gallery__grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--s2); }
.builder-gallery__item {
  display: grid; gap: 6px; width: 100%; padding: 6px; border: var(--hairline) solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); font: inherit; font-size: var(--fs-sm); text-align: left; cursor: pointer;
  transition: border-color var(--dur-1), box-shadow var(--dur-1), transform var(--dur-1);
}
.builder-gallery__item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.builder-gallery__item:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.builder-gallery__frame { border-radius: 6px; pointer-events: none; }

.builder-icons { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(52px, 1fr)); gap: var(--s1); }
.builder-icons__btn {
  display: grid; place-items: center; width: 100%; aspect-ratio: 1; border: var(--hairline) solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); cursor: pointer;
}
.builder-icons__btn:hover, .builder-icons__btn:focus-visible { border-color: var(--accent); color: var(--accent); outline: none; }

@media (max-width: 900px) {
  .builder__tb-group { border-right: 0; padding-right: 0; }
  .builder__body { grid-template-columns: minmax(0, 1fr); }
  .builder__side { position: static; max-height: none; }
  .builder__list { grid-auto-flow: column; grid-auto-columns: 160px; overflow-x: auto; padding-bottom: 4px; }
}

/* ---- Library: my exercises ----------------------------------------------------------------------------------- */
.library__heading { margin: var(--s4) 0 var(--s2); font-size: var(--fs-lg); }
.library-custom { display: grid; gap: var(--s2); margin-bottom: var(--s3); }
.library-custom__head { display: grid; gap: var(--s-half); }
.library-custom__head h2 { margin: 0; font-size: var(--fs-lg); }
.library-custom__head p { margin: 0; }
.library-custom__link { color: var(--ink); font-weight: 600; text-decoration: none; overflow-wrap: anywhere; }
.library-custom__link:hover { color: var(--accent); text-decoration: underline; }

/* ---- Help ------------------------------------------------------------------------------------------------------ */
.help { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: var(--s3); align-items: start; }
.help__toc { position: sticky; top: var(--s2); display: grid; gap: var(--s1); max-height: calc(100vh - 32px); overflow: auto; padding-right: 4px; }
.help__toc-h { margin: var(--s2) 0 0; }
.help__toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.help__toc-link { display: flex; align-items: center; gap: var(--s1); padding: 7px 10px; border-radius: var(--radius-sm); color: var(--ink); text-decoration: none; font-size: var(--fs-sm); }
.help__toc-link .icon { color: var(--ink-muted); flex: none; }
.help__toc-link:hover { background: var(--surface-2); }
.help__toc-link[aria-current="true"] { background: var(--accent-soft); color: var(--ink); font-weight: 600; }
.help__toc-link[aria-current="true"] .icon { color: var(--accent); }
.help__body { display: grid; gap: var(--s2); min-width: 0; }
.help__section { display: grid; gap: var(--s2); scroll-margin-top: var(--s2); line-height: 1.6; }
.help__section:focus { outline: none; }
.help__section:focus-visible { box-shadow: 0 0 0 3px var(--accent-soft); }
.help__section > p, .help__section ul, .help__section ol, .help__section dl { margin: 0; max-width: 75ch; }
.help__h { display: flex; align-items: center; gap: var(--s1); margin: 0; font-size: var(--fs-lg); }
.help__icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); flex: none; }
.help__list, .help__steps { padding-left: 1.4em; display: grid; gap: 6px; }
.help__steps li::marker { color: var(--accent); font-weight: 700; }
.help__terms { display: grid; grid-template-columns: minmax(140px, 220px) minmax(0, 1fr); gap: 10px var(--s2); }
.help__terms dt { font-weight: 600; }
.help__terms dd { margin: 0; color: var(--ink-muted); }
.help__tip { display: flex; gap: var(--s1); align-items: flex-start; padding: 12px 14px; border-radius: var(--radius-sm); background: var(--info-soft); }
.help__tip .icon { color: var(--info); flex: none; margin-top: 3px; }
.help__section .shortcut-list { max-width: 640px; }
.help__empty { margin: 0; }
@media (max-width: 900px) {
  .help { grid-template-columns: minmax(0, 1fr); }
  .help__toc { position: static; max-height: none; }
  .help__terms { grid-template-columns: minmax(0, 1fr); }
  .help__terms dd { margin-bottom: var(--s1); }
}