/* ============================================================
   Life Lab - layout

   The board is the hero. Under it: Play / Step / Random /
   Clear, draw or erase, speed, patterns, then the rule editor.
   ============================================================ */

.ll-stage {
  cursor: crosshair;
  height: clamp(300px, min(60svh, 120vw), 720px);
}
.ll-stage:focus-visible { outline-offset: -3px; }

.ll-controls {
  display: grid;
  gap: .9rem;
  width: 100%;
  max-width: 860px;
  margin-inline: auto;
  padding: 1rem clamp(1rem, 4vw, 1.25rem) 0;
}

.ll-group { display: grid; gap: .35rem; min-width: 0; }
.ll-label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.ll-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .4rem; }
.ll-seg { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .4rem; }
.ll-row .btn,
.ll-seg .btn,
.ll-presets .btn { min-height: var(--tap); padding-inline: .3rem; min-width: 0; font-size: .9rem; }
.ll-seg .btn[aria-pressed="true"] {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--text);
}

.ll-presets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .4rem; }
.ll-presets .btn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.ll-rule-presets { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* ---- slider ----------------------------------------------- */
.ll-slider { display: grid; gap: .05rem; font-size: .9rem; color: var(--text-dim); min-width: 0; }
.ll-slider span { display: flex; justify-content: space-between; gap: .5rem; }
.ll-slider output { font-family: var(--font-mono); color: var(--text); }
.ll-slider input {
  width: 100%;
  height: var(--tap);
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ---- rule editor ------------------------------------------ */
.ll-rules {
  margin: 0;
  padding: .8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  display: grid;
  gap: .6rem;
  min-width: 0;
}
.ll-rules legend {
  padding: 0 .4rem;
  font-family: var(--font-display);
  font-weight: 700;
}
.ll-rule {
  font-family: var(--font-mono);
  color: var(--accent);
  margin-left: .4rem;
}
.ll-hint { margin: 0; color: var(--text-dim); font-size: .88rem; }
.ll-rule-row { display: grid; gap: .25rem; min-width: 0; }
.ll-rule-name { font-size: .9rem; color: var(--text); }
.ll-rule-name small { color: var(--text-dim); font-size: .8rem; }

.ll-boxes { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); gap: .25rem; }
.ll-box { position: relative; display: block; min-width: 0; }
.ll-box input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}
.ll-box span {
  display: grid;
  place-items: center;
  min-height: var(--tap);
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-dim);
}
.ll-box input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.ll-box input:focus-visible + span { outline: 3px solid var(--text); outline-offset: 2px; }

.ll-try {
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .7rem .9rem;
  color: #C9CEE2;
}

@media (min-width: 640px) {
  .ll-presets { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .ll-rule-presets { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .ll-boxes { gap: .4rem; }
}