/* Abend.
 *
 * A byte carries its own shell, so this file sets the page frame as well as
 * the machine's own surfaces. Measures in rem, never ch.
 */

* { margin: 0; padding: 0; box-sizing: border-box; }

/* Set --machine, never --accent.
 *
 * logical-art.css computes `body { --accent: var(--machine, var(--la-instrument)) }`,
 * so declaring --accent here on :root is overridden for everything inside
 * body and the whole page silently renders in the fallback grey, #bdbdbd.
 * That is the trap the canon warns about in as many words, and it cost a
 * measurement to find because the rule was present and the colour was not.
 * The accent is the roster's value for turnaround. */
body[data-machine="abend"] { --machine: #a8c8a0; }

body {
  font-family: var(--la-font-ui);
  background: var(--la-page);
  color: var(--la-ink);
  line-height: var(--la-leading-body);
  -webkit-font-smoothing: antialiased;
}

.ab-main {
  max-width: var(--la-measure);
  margin: 0 auto;
  padding: 3rem 1.25rem 3rem;
}

.ab-head { margin-bottom: var(--la-space-6); }

.ab-lede {
  margin-top: var(--la-space-3);
  color: var(--la-ink-dim);
}

.ab-sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.ab-panel {
  margin-top: var(--la-space-6);
  padding: var(--la-space-4);
  border: 1px solid var(--la-hairline-strong);
  border-radius: var(--la-radius, 6px);
  background: color-mix(in srgb, var(--la-ink) 3%, transparent);
}

.ab-panel h2 { margin-bottom: var(--la-space-2); }

.ab-hint, .ab-note {
  color: var(--la-ink-dim);
  font-size: var(--la-text-sm);
  margin-top: var(--la-space-2);
}

/* ---- knobs ------------------------------------------------------------ */

.ab-knobs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--la-space-3) var(--la-space-4);
  margin-top: var(--la-space-4);
}

.ab-knob label {
  display: block;
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  color: var(--la-ink-dim);
  margin-bottom: var(--la-space-2);
}

.ab-value { color: var(--accent); }

.ab-range {
  width: 100%;
  accent-color: var(--accent);
  min-height: 1.5rem;
}

.ab-range:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---- the passes ------------------------------------------------------- */

.ab-passes {
  width: 100%;
  margin-top: var(--la-space-4);
  border-collapse: collapse;
  font-size: var(--la-text-sm);
}

.ab-passes th {
  text-align: right;
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  font-weight: 400;
  color: var(--la-ink-dim);
  padding: 0 0 var(--la-space-2) var(--la-space-2);
  border-bottom: 1px solid var(--la-hairline-strong);
}

.ab-passes th:first-child { text-align: left; }

.ab-passes td {
  text-align: right;
  padding: var(--la-space-2) 0 var(--la-space-2) var(--la-space-2);
  border-bottom: 1px solid var(--la-hairline);
  color: var(--la-ink);
}

.ab-passes td:first-child { text-align: left; color: var(--la-ink-dim); }

/* The last pass is the answer: it stops being a guess. */
.ab-passes tbody tr:last-child td { color: var(--accent); }

.ab-num { font-family: var(--la-font-mono); }

/* ---- the readout ------------------------------------------------------ */

.ab-readout {
  margin-top: var(--la-space-4);
  border-top: 1px solid var(--la-hairline);
}

.ab-row {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: var(--la-space-3);
  padding: var(--la-space-2) 0;
  border-bottom: 1px solid var(--la-hairline);
}

.ab-row dt {
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  color: var(--la-ink-dim);
}

.ab-row dd {
  font-size: var(--la-text-sm);
  color: var(--la-ink);
  overflow-wrap: anywhere;
}

.ab-strong dd { color: var(--accent); font-weight: 600; }

.ab-why { margin-top: var(--la-space-6); }
.ab-why h2 { margin-top: var(--la-space-5); margin-bottom: var(--la-space-2); }
.ab-why p { margin-top: var(--la-space-3); color: var(--la-ink-dim); }

@media (max-width: 34rem) {
  .ab-row { grid-template-columns: 1fr; }
  .ab-row dt { color: var(--la-ink-faint); }
}


/* ---- the deck ---------------------------------------------------------- */

.ab-label {
  margin-top: var(--la-space-4);
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  color: var(--la-ink-dim);
}

.ab-deck {
  display: flex;
  flex-wrap: wrap;
  gap: var(--la-space-2);
  margin-top: var(--la-space-4);
}

.ab-card {
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: var(--la-space-2) 0.7rem;
  border: 1px solid var(--la-hairline-strong);
  border-radius: 2px;
  background: color-mix(in srgb, var(--la-ink) 5%, transparent);
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
}

.ab-card-key { color: var(--la-ink); font-size: var(--la-text-sm); }
.ab-card-ctl { color: var(--accent); }
.ab-card-val { color: var(--la-ink-dim); }

/* ---- the fifteen items ------------------------------------------------- */

.ab-items {
  margin-top: var(--la-space-2);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--la-hairline);
}

.ab-item {
  display: flex;
  gap: var(--la-space-2);
  align-items: baseline;
  padding: var(--la-space-2) 0.4rem;
  border-bottom: 1px solid var(--la-hairline);
  font-size: var(--la-text-sm);
  color: var(--la-ink-dim);
}

.ab-item-n {
  flex: none;
  width: 1.6rem;
  text-align: right;
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  color: var(--la-ink-faint);
}

/* Yours and the compiler's, told apart by a rule down the side as well as by
   colour, so it survives greyscale. */
.ab-item[data-yours="yes"] {
  border-left: 3px solid var(--accent);
  color: var(--la-ink);
}

.ab-item[data-yours="no"] { border-left: 3px solid transparent; }

.ab-item[data-here="yes"] {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--la-ink);
}

.ab-item[data-here="yes"] .ab-item-n { color: var(--accent); font-weight: 600; }

/* ---- the printer ------------------------------------------------------- */

.ab-print {
  margin-top: var(--la-space-2);
  padding: var(--la-space-3);
  border: 1px solid var(--la-hairline-strong);
  border-radius: var(--la-radius, 6px);
  background: #05070a;
  font-family: var(--la-font-mono);
  font-size: var(--la-text-sm);
  color: var(--la-ink);
  white-space: pre;
  overflow-x: auto;
  min-height: 6rem;
}

/* ---- the days ---------------------------------------------------------- */

.ab-days {
  width: 100%;
  margin-top: var(--la-space-4);
  border-collapse: collapse;
  font-size: var(--la-text-sm);
}

.ab-days th {
  text-align: left;
  font-family: var(--la-font-mono);
  font-size: var(--la-text-xs);
  font-weight: 400;
  color: var(--la-ink-dim);
  padding: 0 var(--la-space-2) var(--la-space-2) 0;
  border-bottom: 1px solid var(--la-hairline-strong);
}

.ab-days td {
  padding: var(--la-space-2) var(--la-space-2) var(--la-space-2) 0;
  border-bottom: 1px solid var(--la-hairline);
  color: var(--la-ink);
  vertical-align: top;
}

.ab-days tbody tr:last-child td { color: var(--accent); }

.ab-presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--la-space-2);
  margin-top: var(--la-space-4);
}

.ab-btn {
  font-family: var(--la-font-mono);
  font-size: var(--la-text-sm);
  color: var(--la-ink);
  background: color-mix(in srgb, var(--la-ink) 6%, transparent);
  border: 1px solid var(--la-hairline-strong);
  border-radius: var(--la-radius, 6px);
  padding: 0.4em 0.9em;
  cursor: pointer;
  /* 2.5.8 asks for 24 CSS pixels. */
  min-height: 2.25rem;
  min-width: 2.25rem;
}

.ab-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }

.ab-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.ab-btn[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.ab-btn:disabled { opacity: 0.45; cursor: default; }

.ab-now { margin-top: var(--la-space-4); }