/* The panel under the diagram: tapes, alphabet Γ, run controls and the status line. */

/* ---------- Panel and status colors ---------- */

.tape-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 14px;
  display: grid;
  gap: 10px;
  --chip: var(--run);
  --on-chip: var(--on-run);
}

.tape-panel[data-status="accepted"] {
  --chip: var(--ok);
}

.tape-panel[data-status="rejected"],
.tape-panel[data-status="limit"] {
  --chip: var(--bad);
}

.tape-panel[data-status="accepted"],
.tape-panel[data-status="rejected"],
.tape-panel[data-status="limit"] {
  --on-chip: var(--panel);
}

/* ---------- Top row: tape count and blank symbol ---------- */

.tape-top {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  justify-content: space-between;
}

.tape-top .left {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}

.counter {
  display: flex;
  gap: 4px;
  align-items: center;
}

.counter output {
  min-width: 64px;
  text-align: center;
}

.tag {
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 8px;
  color: var(--muted);
}

.tag.live {
  border-color: var(--run);
  color: var(--run);
}

.tape-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.tape-tools label {
  display: flex;
  gap: 6px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

#blank {
  width: 38px;
  text-align: center;
}

/* ---------- Alphabet Γ ---------- */

.gamma {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  align-items: center;
}

.gamma .gl {
  font-weight: 700;
}

.gchips {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 5px;
}

.gchip {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 3px 0 8px;
  background: var(--soft);
}

.gchip.blank {
  padding-right: 8px;
  border-style: dashed;
  background: transparent;
  color: var(--muted);
}

.gchip button {
  all: unset;
  cursor: pointer;
  color: var(--muted);
  padding: 0 4px;
  font-size: 13px;
  line-height: 1.4;
}

.gchip button:hover {
  color: var(--bad);
}

.gchip button:focus-visible {
  outline: 2px solid var(--sel);
}

#g-add {
  width: 132px;
  padding: 2px 8px;
}

.gamma .btn {
  padding: 2px 9px;
  font-size: 12.5px;
}

/* ---------- Tape blocks ---------- */

.tapes {
  display: grid;
  gap: 10px;
  align-content: start;
}

.tape-block {
  display: grid;
  gap: 2px;
}

.tb-head {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  align-items: center;
}

.tb-name {
  font-weight: 700;
  color: var(--muted);
  min-width: 56px;
}

.tb-head .inp {
  width: min(210px, 40vw);
  padding: 2px 8px;
}

.tb-head .check {
  font-size: 12px;
  color: var(--muted);
}

.tapes:not(.multi) .tb-head .check,
.tapes:not(.multi) .tb-name {
  display: none;
}

/* ---------- Strip of cells ---------- */

.tape-scroll {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 6px;
}

.strip {
  display: flex;
  flex: none;
}

.padbtn {
  flex: none;
  align-self: center;
  margin-top: 10px;
  writing-mode: vertical-rl;
  height: 50px;
  padding: 3px 5px;
  font: inherit;
  font-size: 11px;
  border: 1px dashed var(--line);
  border-radius: 3px;
  background: none;
  color: var(--muted);
  cursor: pointer;
}

.padbtn:hover {
  color: var(--ink);
  border-color: var(--sel);
}

.col {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 42px;
  flex: none;
}

.slot {
  height: 32px;
  width: 100%;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  color: var(--chip);
}

.slot .chip {
  display: none;
  font: 700 12px/1.3 var(--font);
  background: var(--chip);
  color: var(--on-chip);
  border-radius: 3px;
  padding: 0 6px;
  white-space: nowrap;
}

.slot .tri {
  width: 0;
  height: 0;
  border: 5px solid transparent;
  border-top-color: currentColor;
  border-bottom: 0;
  opacity: 0;
}

.slot:hover .tri,
.slot:focus-visible .tri {
  opacity: 0.45;
}

.col.head .chip {
  display: block;
}

.col.head .tri {
  opacity: 1;
}

/* ---------- Cells ---------- */

.cell {
  width: 100%;
  height: 42px;
  border: 1px solid var(--line);
  border-right-width: 0;
  border-radius: 0;
  background: var(--tile);
  color: var(--ink);
  text-align: center;
  font: 700 18px var(--font);
  padding: 0;
  caret-color: transparent;
}

.col:first-child .cell {
  border-radius: 3px 0 0 3px;
}

.col:last-child .cell {
  border-right-width: 1px;
  border-radius: 0 3px 3px 0;
}

.cell::placeholder {
  color: var(--muted);
  opacity: 0.35;
  font-weight: 400;
}

.cell:focus {
  outline: 2px solid var(--sel);
  outline-offset: -2px;
  position: relative;
  z-index: 2;
  background: var(--sel-soft);
}

.col.head .cell {
  outline: 2px solid var(--chip);
  outline-offset: -1px;
  position: relative;
  z-index: 1;
}

.col.head .cell:focus {
  outline-color: var(--sel);
}

.col.wrote .cell {
  background: var(--run-soft);
}

.cell.out {
  color: var(--bad);
  background: var(--bad-soft);
}

.tape-block.ro .cell {
  background: var(--soft);
}

.idx {
  font-size: 10.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-top: 3px;
}

/* ---------- Run controls and status ---------- */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
}

.controls .grp {
  display: flex;
  gap: 6px;
}

.speed {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.speed input {
  width: 120px;
  accent-color: var(--sel);
}

.speed output {
  min-width: 96px;
  color: var(--ink);
}

.status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: center;
  flex: 1 1 320px;
  min-width: 0;
}

.pill {
  font-weight: 700;
  font-size: 12px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--muted);
}

.pill.playing {
  background: var(--run-soft);
  border-color: var(--run);
  color: var(--run);
}

.pill.paused {
  background: var(--sel-soft);
  border-color: var(--sel);
  color: var(--sel);
}

.pill.accepted {
  background: var(--ok-soft);
  border-color: var(--ok);
  color: var(--ok);
}

.pill.rejected,
.pill.limit {
  background: var(--bad-soft);
  border-color: var(--bad);
  color: var(--bad);
}

.facts {
  color: var(--muted);
}

.facts b {
  color: var(--ink);
  font-weight: 700;
}

.msg {
  flex-basis: 100%;
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  min-height: 1.5em;
  overflow-wrap: anywhere;
}