:root {
  color-scheme: dark;
  --bg: #08111f;
  --panel: rgba(15, 23, 42, 0.86);
  --panel-strong: rgba(15, 23, 42, 0.96);
  --border: rgba(148, 163, 184, 0.22);
  --text: #e5eefc;
  --muted: #9fb0ca;
  --accent: #22d3ee;
  --accent-2: #a78bfa;
  --danger: #fb7185;
  --success: #86efac;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 10%, rgba(34, 211, 238, 0.22), transparent 28rem),
    radial-gradient(circle at 86% 0%, rgba(167, 139, 250, 0.22), transparent 26rem),
    var(--bg);
  color: var(--text);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(8, 17, 31, 0.92), rgba(30, 41, 59, 0.7));
}

.eyebrow {
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.76rem;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0.5rem; font-size: clamp(1.8rem, 4vw, 3.2rem); }
h2 { margin-bottom: 0.35rem; }
h3 { color: var(--muted); font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.05em; }
p { color: var(--muted); line-height: 1.55; }
code { color: #fef08a; }

button, input, textarea {
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  color: var(--text);
  background: rgba(15, 23, 42, 0.84);
  font: inherit;
}

button {
  cursor: pointer;
  padding: 0.65rem 0.9rem;
  font-weight: 800;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

button:hover { transform: translateY(-1px); border-color: rgba(34, 211, 238, 0.8); }
button.primary, .tool.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #07111f; border: 0; }
button:disabled { cursor: wait; opacity: 0.65; transform: none; }

.hero-actions, .toolbox, .legend { display: flex; flex-wrap: wrap; gap: 0.65rem; align-items: center; }

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(460px, 1.4fr) minmax(280px, 0.7fr);
  gap: 1rem;
  padding: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.26);
}

.panel-header { display: flex; justify-content: space-between; gap: 1rem; align-items: start; }
.editor-panel, .side-panel { display: flex; flex-direction: column; gap: 1rem; }

textarea {
  width: 100%;
  min-height: 29rem;
  resize: vertical;
  padding: 1rem;
  line-height: 1.5;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  background: rgba(2, 6, 23, 0.72);
}

.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
label { display: flex; flex-direction: column; gap: 0.35rem; color: var(--muted); font-weight: 700; }
input { padding: 0.6rem 0.7rem; }

.stage { min-width: 0; }
.stage-header { align-items: center; }
#runtimeCanvas {
  display: block;
  width: 100%;
  height: auto;
  min-height: 420px;
  background: #07111f;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 0.9rem;
  touch-action: none;
}

.legend { color: var(--muted); margin-top: 0.75rem; font-size: 0.92rem; }
.legend i { display: inline-block; width: 0.9rem; height: 0.9rem; border-radius: 999px; margin-right: 0.35rem; vertical-align: -0.12rem; }
.entity-dot { background: #fb923c; }
.zone-dot { background: var(--accent); }
.path-dot { background: var(--accent-2); }

.data-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.data-list li {
  padding: 0.65rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
}
.data-list strong { color: var(--text); }
.log li.display { border-color: rgba(134, 239, 172, 0.35); color: var(--success); }
.log li.finish { border-color: rgba(251, 146, 60, 0.35); color: #fdba74; }

#status { min-height: 1.5rem; color: var(--muted); font-weight: 700; }
#status.error { color: var(--danger); }
#status.ok { color: var(--success); }

@media (max-width: 1180px) {
  .workspace { grid-template-columns: 1fr; }
  textarea { min-height: 22rem; }
}

@media (max-width: 720px) {
  .hero { flex-direction: column; align-items: stretch; }
  .settings-grid { grid-template-columns: 1fr; }
}