/* Phase 0 harness.
   Deliberately plain. The gate measures whether the LOOP is fun; a UI with
   personality of its own would contaminate the reading. Legible, dense, quiet. */

:root {
  --bg: #0d1213;
  --panel: #141b1c;
  --panel-2: #1a2324;
  --line: #24302f;
  --ink: #dfe8e6;
  --ink-2: #93a3a2;
  --ink-3: #667776;
  --accent: #4fb3b8;
  --good: #6fbb8d;
  --bad: #d9736e;
  --warn: #d3a44e;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 5;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 0.75rem; }
.mark { font-family: var(--mono); font-weight: 600; letter-spacing: 0.22em; color: var(--accent); }
.sub { color: var(--ink-3); font-size: 0.8rem; }

.env { display: flex; gap: 1.5rem; font-family: var(--mono); font-size: 0.8rem; }
.env b { color: var(--ink); font-weight: 500; }
.env span { color: var(--ink-3); }
.tools { margin-left: auto; display: flex; gap: 0.5rem; }

button {
  font: inherit;
  font-size: 0.8rem;
  background: var(--panel-2);
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
}
button:hover { color: var(--ink); border-color: var(--accent); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

main {
  display: grid;
  grid-template-columns: 460px minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.25rem;
  align-items: start;
}
@media (max-width: 1100px) { main { grid-template-columns: 1fr; } }

h2 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--ink-3);
  margin: 0 0 0.75rem;
  font-weight: 600;
}
h3 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--ink-3);
  margin: 1.5rem 0 0.5rem;
  font-weight: 600;
}
.gen, .alive { color: var(--accent); font-family: var(--mono); letter-spacing: 0; text-transform: none; }
.hint { color: var(--ink-3); font-size: 0.78rem; margin: 0 0 0.75rem; }

.parent-pane, .clutch-pane, .lineage-pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1rem;
}
.lineage-pane { margin: 0 1.25rem 2rem; }

canvas { display: block; background: #0a0f10; border-radius: 3px; width: 100%; height: auto; }

.stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 1rem;
  margin: 0.75rem 0 0;
  font-family: var(--mono);
  font-size: 0.76rem;
}
.stats dt { color: var(--ink-3); }
.stats dd { margin: 0; color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }

.sliders { display: flex; flex-direction: column; gap: 0.4rem; }
.sliders label {
  display: grid;
  grid-template-columns: 6.5rem 1fr 3rem;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--ink-2);
}
.sliders input { width: 100%; accent-color: var(--accent); }
.sliders output { font-family: var(--mono); font-size: 0.74rem; text-align: right; color: var(--ink); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.6rem;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.12s;
}
.card:hover:not(.dead) { border-color: var(--accent); }
.card.dead { opacity: 0.42; cursor: not-allowed; }
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.card canvas { height: 130px; }

.badge {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.15em 0.45em;
  border-radius: 2px;
  align-self: flex-start;
}
.badge.viable { color: var(--good); background: #12251b; }
.badge.starved { color: var(--warn); background: #262013; }
.badge.froze { color: #7fa8d9; background: #131c26; }
.badge.overheated { color: var(--bad); background: #261615; }
.badge.collapsed { color: var(--bad); background: #261615; }

.deltas {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.1rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
}
.deltas span { color: var(--ink-3); }
.deltas b { font-weight: 500; font-variant-numeric: tabular-nums; text-align: right; display: block; }
.up { color: var(--good); }
.down { color: var(--bad); }
.flat { color: var(--ink-3); }

.meta { font-family: var(--mono); font-size: 0.68rem; color: var(--ink-3); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 9, 10, 0.86);
  display: grid;
  place-items: center;
  z-index: 10;
}
.overlay.hidden { display: none; }
.overlay-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2rem;
  max-width: 30rem;
  text-align: center;
}
.overlay-card h2 { font-size: 1.3rem; letter-spacing: 0; text-transform: none; color: var(--bad); margin-bottom: 0.75rem; }
.overlay-card p { color: var(--ink-2); }

.badge.eaten { color: #c98ad9; background: #21162a; }

.env i { font-style: normal; color: #4a5857; margin-left: 0.4rem; font-size: 0.72rem; }
.env b.warn { color: var(--warn); }

/* Telemetry fallback. A sandboxed page cannot start a download, so the data
   has to be visible and copyable or a playtest session is simply lost. */
.telemetry {
  margin: 0 1.25rem 2rem;
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 1rem;
}
.telemetry.hidden { display: none; }
.telemetry-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}
.telemetry-head strong { color: var(--accent); font-size: 0.8rem; }
.telemetry-head span { color: var(--ink-3); font-size: 0.76rem; flex: 1 1 20rem; }
#telemetry-text {
  width: 100%;
  height: 11rem;
  background: #0a0f10;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.6rem;
  resize: vertical;
}

.world { width: 100%; height: 300px; display: block; background: #0d1213; border-radius: 3px; touch-action: none; cursor: grab; }
.world:active { cursor: grabbing; }