/* ==========================================================================
   abracalabra — child-facing chambers below the Abelisk
   --------------------------------------------------------------------------
   A small extension of the Word Structures design system in assets/site.css.
   It defines NOTHING that assets/abelisk.css defines: every selector here is
   prefixed `ab-`, so the two products cannot affect one another even if a
   page ever loaded both.

   Identity: same letter colours as Abelisk (so a child recognises the world),
   but set on a darker, warmer ground — an archive rather than a classroom.

   Accessibility floor held here:
     - every interactive target is at least 44x44 CSS px;
     - no state is carried by colour alone (each coloured state also carries a
       glyph or a word);
     - focus is always visible;
     - reduced motion removes movement without removing information;
     - the layout reflows to a single column below 40rem and never requires
       horizontal scrolling.
   ========================================================================== */

.abracalabra-app {
  --ab-ground:      #101c33;
  --ab-ground-soft: #182740;
  --ab-card:        #f7f4ec;
  --ab-card-sunk:   #ece7db;
  --ab-ink:         #10203c;
  --ab-ink-soft:    #4d5a72;
  --ab-onDark:      #e9edf5;
  --ab-onDark-soft: #a7b3ca;
  --ab-edge:        #2e3f5e;
  --ab-glow:        #d9a441;   /* the artefact's own light */

  background: var(--ab-ground);
  color: var(--ab-onDark);
  min-height: 70vh;
  padding-block: clamp(1.5rem, 5vw, 3.5rem);
}

.ab-shell {
  width: min(58rem, 100% - 2rem);
  margin-inline: auto;
}

/* --- Top bar ------------------------------------------------------------ */

.ab-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--ab-edge);
  margin-bottom: 2rem;
}
.ab-topbar__spacer { flex: 1 1 auto; }

.ab-brand {
  font-family: var(--serif);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--ab-glow);
}

.ab-chapter {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ab-onDark-soft);
}

.ab-lang { display: inline-flex; gap: 0.25rem; }

/* --- Type --------------------------------------------------------------- */

.ab-title {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.1;
  margin: 0 0 1.5rem;
  color: var(--ab-onDark);
}

.abracalabra-app p { max-width: 46ch; line-height: 1.6; }

.ab-intro   { color: var(--ab-onDark-soft); }
.ab-prompt  { font-size: 1.125rem; color: var(--ab-onDark); }
.ab-prompt--lock { font-size: 1.25rem; font-family: var(--serif); }
.ab-rule {
  font-size: 0.9375rem;
  color: var(--ab-onDark-soft);
  border-left: 2px solid var(--ab-edge);
  padding-left: 0.75rem;
}
.ab-rule--warn { border-left-color: var(--ab-glow); }
.ab-naming  { color: var(--ab-onDark-soft); font-style: italic; }
.ab-bounded { color: var(--ab-onDark-soft); font-size: 0.9375rem; }
.ab-privacy {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ab-edge);
  font-size: 0.8125rem;
  color: var(--ab-onDark-soft);
}

.ab-claim {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--ab-ground-soft);
  border: 1px solid var(--ab-edge);
  border-left: 4px solid var(--ab-glow);
  font-family: var(--serif);
  font-size: clamp(1rem, 2.6vw, 1.25rem);
  letter-spacing: 0.03em;
  line-height: 1.5;
}
.ab-claim.is-cracked { border-left-style: dashed; opacity: 0.65; text-decoration: line-through; }
.ab-claim--repaired  { border-left-color: var(--green); }
.ab-claim--rule      { border-left-color: var(--red); }

/* --- Letter cells (shared visual grammar with Abelisk, own selectors) ---- */

.ab-cell {
  display: inline-grid;
  place-items: center;
  width: clamp(2.25rem, 7vw, 3rem);
  height: clamp(2.25rem, 7vw, 3rem);
  border-radius: 2px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(1.125rem, 3.5vw, 1.5rem);
  color: #fff;
  border: 2px solid transparent;
}
.ab-cell--a { background: var(--blue); }
.ab-cell--b { background: var(--yellow); color: var(--navy); }
.ab-cell--c { background: var(--green); }

.ab-strip, .ab-slots, .ab-half__cells, .ab-word {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.ab-strip { margin: 1.5rem 0; gap: 0.4rem; }

.ab-stripcell { cursor: pointer; min-width: 44px; min-height: 44px; }
.ab-stripcell.is-selected { border-color: var(--ab-glow); box-shadow: 0 0 0 3px rgba(217,164,65,0.35); }
.ab-stripcell.is-anchor   { border-color: var(--ab-onDark); border-style: dashed; }

/* --- Slot builder ------------------------------------------------------- */

.ab-build { margin: 1.5rem 0; }
.ab-slots { align-items: center; margin-bottom: 1rem; }

.ab-slot { cursor: pointer; min-width: 44px; min-height: 44px; }
.ab-slot--empty {
  display: inline-grid;
  place-items: center;
  width: clamp(2.25rem, 7vw, 3rem);
  height: clamp(2.25rem, 7vw, 3rem);
  background: var(--ab-ground-soft);
  border: 2px dashed var(--ab-edge);
  border-radius: 2px;
  color: var(--ab-onDark-soft);
  font-size: 1.25rem;
}

.ab-divider {
  width: 3px;
  align-self: stretch;
  min-height: 2.25rem;
  background: var(--ab-glow);
  margin-inline: 0.35rem;
}

.ab-keys { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

.ab-key {
  min-width: 48px;
  min-height: 48px;
  border: none;
  border-radius: 4px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.375rem;
  color: #fff;
  cursor: pointer;
}
.ab-key--a { background: var(--blue); }
.ab-key--b { background: var(--yellow); color: var(--navy); }
.ab-key--c { background: var(--green); }

/* --- Buttons ------------------------------------------------------------ */

.ab-btn {
  display: inline-block;
  min-height: 44px;
  padding: 0.6rem 1.1rem;
  background: var(--ab-glow);
  color: var(--ab-ink);
  border: 1px solid var(--ab-glow);
  border-radius: 3px;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.ab-btn--big { font-size: 1.125rem; padding: 0.85rem 1.6rem; margin-top: 1.5rem; }
.ab-btn--quiet {
  background: transparent;
  color: var(--ab-onDark);
  border-color: var(--ab-edge);
  font-weight: 500;
}
.ab-btn--quiet.is-on {
  border-color: var(--ab-glow);
  color: var(--ab-glow);
}
/* `is-on` is also carried by aria-pressed, so the state is never colour-only. */
.ab-btn--quiet.is-on::before { content: "\2713\00a0"; }

.ab-options { display: flex; flex-direction: column; gap: 0.6rem; margin: 1rem 0; }
.ab-opt {
  min-height: 48px;
  text-align: left;
  padding: 0.85rem 1rem;
  background: var(--ab-card);
  color: var(--ab-ink);
  border: 1px solid var(--ab-card-sunk);
  border-radius: 3px;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.45;
  cursor: pointer;
}
.ab-opt:hover { border-color: var(--ab-glow); }

/* --- Inventories and halves --------------------------------------------- */

.ab-halves {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--ab-ground-soft);
  border: 1px solid var(--ab-edge);
}
.ab-half { display: flex; flex-direction: column; gap: 0.75rem; }

.ab-inv {
  background: var(--ab-card);
  color: var(--ab-ink);
  padding: 0.6rem 0.75rem;
  border-radius: 3px;
}
.ab-inv__label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ab-ink-soft);
  margin-bottom: 0.4rem;
}
.ab-inv__rows { display: flex; gap: 0.75rem; }
.ab-inv__row { display: inline-flex; align-items: center; gap: 0.3rem; }
.ab-inv__sym { width: 1.5rem; height: 1.5rem; font-size: 0.875rem; }
.ab-inv__n { font-variant-numeric: tabular-nums; font-weight: 700; }

/* --- Notices: three distinct kinds, never one generic "wrong" ------------ */

.ab-notice {
  margin: 1rem 0;
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--ab-edge);
  background: var(--ab-ground-soft);
  font-size: 1rem;
}
/* A single candidate that did not work. Not an error, not a result. */
.ab-notice--attempt { border-left-color: var(--ab-onDark-soft); }
.ab-notice--attempt::before { content: "\00b7\00a0"; font-weight: 700; }
/* Something the child established. */
.ab-notice--good { border-left-color: var(--green); }
.ab-notice--good::before { content: "\2713\00a0"; font-weight: 700; }
/* The interface could not act, e.g. an unfilled slot. */
.ab-notice--error { border-left-color: var(--red); }
.ab-notice--error::before { content: "\0021\00a0"; font-weight: 700; }

/* --- Resolutions -------------------------------------------------------- */

.ab-resolve {
  margin: 1.75rem 0;
  padding: 1.5rem;
  background: var(--ab-card);
  color: var(--ab-ink);
  border-radius: 3px;
}
.ab-resolve p { color: var(--ab-ink-soft); }
.ab-resolve__head {
  font-family: var(--serif);
  font-size: 1.375rem;
  color: var(--ab-ink) !important;
  margin: 0 0 0.75rem;
}
.ab-resolve--final { border-top: 4px solid var(--ab-glow); }
.ab-line { margin: 0.35rem 0; }
.ab-conclusion {
  margin-top: 1rem;
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--ab-ink) !important;
}

/* --- Earned acts -------------------------------------------------------- */

.ab-earned { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0; margin: 0 0 2rem; }
.ab-earned__item {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--ab-glow);
  color: var(--ab-glow);
  border-radius: 2px;
}
.ab-earned--full { flex-direction: column; gap: 0.75rem; margin-top: 2rem; }
.ab-earned--full .ab-earned__item { border: none; color: var(--ab-onDark-soft); font-size: 1rem; letter-spacing: normal; padding: 0; }
.ab-earned--full strong { color: var(--ab-glow); letter-spacing: 0.12em; margin-right: 0.5rem; }

.ab-act {
  margin: 2rem 0;
  padding: 1.5rem;
  border: 1px solid var(--ab-glow);
  background: var(--ab-ground-soft);
}
.ab-act__name { font-size: 0.875rem; letter-spacing: 0.18em; color: var(--ab-glow); margin: 0 0 0.5rem; }
.ab-act__line { font-family: var(--serif); font-size: 1.125rem; margin: 0 0 1.25rem; }

/* --- Wall / map --------------------------------------------------------- */

.ab-wall { margin: 1.5rem 0; }
.ab-wall__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ab-onDark-soft);
}
.ab-wall__count { text-transform: none; letter-spacing: normal; }

.ab-sort { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; margin-bottom: 1rem; }
.ab-sort__label { font-size: 0.8125rem; color: var(--ab-onDark-soft); margin-right: 0.25rem; }

.ab-group { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 0.6rem; }
.ab-group__key {
  min-width: 2rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--ab-edge);
  color: var(--ab-onDark-soft);
  font-weight: 700;
  text-align: center;
}
.ab-group__words { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.ab-word { gap: 0.15rem; }
.ab-word .ab-cell { width: 1.75rem; height: 1.75rem; font-size: 0.9375rem; }

.ab-numrow { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.ab-num {
  min-height: 44px;
  width: 7rem;
  padding: 0.5rem 0.75rem;
  font-size: 1.125rem;
  border: 1px solid var(--ab-card-sunk);
  border-radius: 3px;
}
.ab-guide { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.ab-guide > span { flex: 1 1 16rem; }

/* --- Scene 4 tree ------------------------------------------------------- */

.ab-tree { margin: 1.5rem 0; }
.ab-coverage {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--ab-glow);
  color: var(--ab-glow);
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.ab-node {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--ab-edge);
}
.ab-node.is-dead { opacity: 0.72; }
.ab-node__state { font-size: 0.875rem; color: var(--ab-onDark-soft); }
.ab-node__state[data-state="dead"] { color: var(--ab-onDark-soft); }
.ab-node__state[data-state="live"] { color: var(--ab-glow); }

.ab-children { flex: 1 1 100%; display: flex; flex-wrap: wrap; gap: 1rem; padding-left: 1.5rem; border-left: 2px solid var(--ab-edge); }
.ab-child { display: flex; align-items: center; gap: 0.5rem; }

.ab-tried { margin: 1.5rem 0; }
.ab-tried ul { list-style: none; padding: 0; margin: 0.5rem 0 0; }
.ab-tried li { display: flex; align-items: center; gap: 0.6rem; padding: 0.3rem 0; }
.ab-tried__why { font-size: 0.875rem; color: var(--ab-onDark-soft); }

/* --- Opening / outro ---------------------------------------------------- */

.ab-opening { padding: clamp(2rem, 8vw, 5rem) 0; }
.ab-opening__lede { font-family: var(--serif); font-size: clamp(1.375rem, 4vw, 2rem); line-height: 1.3; }
.ab-opening__tagline { color: var(--ab-glow); letter-spacing: 0.06em; }
.ab-outlinks { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; max-width: none; }

/* --- Focus -------------------------------------------------------------- */

.abracalabra-app :focus-visible {
  outline: 3px solid var(--ab-glow);
  outline-offset: 2px;
}


/* --- Rule Plate --------------------------------------------------------- */
.ab-rule-plate {
  margin: 0 0 1.5rem 0;
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--ab-edge);
  background: var(--ab-ground-soft);
  font-size: 0.9375rem;
}
.ab-rule-plate--floor { border-left-color: var(--ab-glow); }
.ab-rule-plate--none { border-left-color: var(--ab-onDark-soft); }
.ab-rule-plate--threshold { border-left-color: var(--red); }

.ab-rule-plate__head {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ab-onDark-soft);
  margin-bottom: 0.5rem;
}
.ab-rule-plate__row { margin-bottom: 0.25rem; }
.ab-rule-plate__term { color: var(--ab-onDark-soft); }

/* --- Append Builder (Scene 5) ------------------------------------------- */
.ab-append { margin: 1.5rem 0; }
.ab-append__word { margin-bottom: 1rem; min-height: 2.25rem; }
.ab-append__controls { margin-top: 1rem; }
.ab-frontier { margin: 1.5rem 0; padding: 1rem; background: var(--ab-card); border-radius: 3px; }
.ab-frontier__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ab-onDark-soft); margin-bottom: 0.75rem; }
.ab-frontier__branches { display: flex; flex-direction: column; gap: 0.75rem; }
.ab-frontier__branch { display: flex; align-items: center; gap: 0.75rem; }
.ab-frontier__status { font-size: 0.875rem; color: var(--ab-onDark-soft); }
.ab-frontier__branch.is-legal .ab-frontier__status { color: var(--green); }
.ab-frontier__witness { margin-left: auto; }
.ab-append__stats { margin-top: 2rem; font-family: var(--serif); font-size: 1.125rem; }

/* --- Machine Profile (Scene 6a) ----------------------------------------- */
.ab-machine-profile { margin: 1.5rem 0; }
.ab-profile-table { width: 100%; max-width: 16rem; border-collapse: collapse; }
.ab-profile-table th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ab-onDark-soft); padding: 0.5rem 0; border-bottom: 1px solid var(--ab-edge); }
.ab-profile-table td { padding: 0.5rem 0; border-bottom: 1px solid var(--ab-card-sunk); font-variant-numeric: tabular-nums; }
.ab-profile-table tr:last-child td { border-bottom: none; }

/* --- Reason Steps (Scene 6b) -------------------------------------------- */
.ab-reason-step { margin: 1.5rem 0; }
.ab-reason-q { font-weight: 600; margin-bottom: 0.75rem; }
.ab-reason-a { margin-top: 0.5rem; color: var(--green); border-left: 2px solid var(--green); padding-left: 0.75rem; }

/* --- Cliff -------------------------------------------------------------- */
.ab-cliff { margin: 2rem 0; }
.ab-cliff__walls { display: flex; flex-wrap: wrap; gap: 2rem; margin-top: 1.5rem; }
.ab-cliff__wall { flex: 1 1 12rem; background: var(--ab-card); padding: 1.25rem; border-radius: 3px; }
.ab-cliff__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ab-onDark-soft); margin: 0 0 1rem; line-height: 1.4; }
.ab-cliff__empty { font-size: 3rem; text-align: center; color: var(--ab-card-sunk); margin: 2rem 0; font-family: var(--serif); }
.ab-cliff__note { font-size: 0.8125rem; color: var(--ab-onDark-soft); text-align: center; }
.ab-cliff__chart { display: flex; align-items: flex-end; gap: 0.4rem; height: 14rem; padding-top: 1.5rem; }
.ab-cliff__bar-container { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 0.25rem; height: 100%; }
.ab-cliff__bar { width: 100%; background: var(--ab-glow); min-height: 1px; border-radius: 1px 1px 0 0; }
.ab-cliff__val { font-size: 0.75rem; font-variant-numeric: tabular-nums; line-height: 1; margin-bottom: 0.25rem; }
.ab-cliff__len { font-size: 0.625rem; color: var(--ab-onDark-soft); }

/* --- Handoff ------------------------------------------------------------ */
.ab-handoff { margin: 3rem 0 2rem; padding-top: 2rem; border-top: 1px solid var(--ab-edge); }
.ab-handoff__stanza { margin: 1.5rem 0; font-family: var(--serif); font-size: 1.25rem; line-height: 1.6; color: var(--ab-glow); }
.ab-handoff__conclusion { font-family: var(--serif); font-size: 1.25rem; margin-bottom: 2rem; }

/* --- Reduced motion ----------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .abracalabra-app *,
  .abracalabra-app *::before,
  .abracalabra-app *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Narrow screens ----------------------------------------------------- */

@media (max-width: 40rem) {
  .ab-halves { flex-direction: column; gap: 1rem; }
  .ab-children { padding-left: 0.75rem; }
  .ab-node { align-items: flex-start; }
  .ab-group { flex-direction: column; gap: 0.4rem; }
}