:root {
  --bg: #0a0d12;
  --ink: #d6e2d1;
  --dim: #6f8a76;
  --glow: #7dffa0;
  --amber: #ffcf6b;
  --line: #1d2a22;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 50% 0%, #12261c 0%, var(--bg) 55%),
    var(--bg);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  line-height: 1.6;
  padding: clamp(1.25rem, 4vw, 3rem);
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 3px,
    rgba(0, 0, 0, 0.22) 4px
  );
  mix-blend-mode: multiply;
}

.hub {
  max-width: 46rem;
  margin: 0 auto;
}

.wordmark {
  font-size: clamp(1.9rem, 7vw, 3.1rem);
  letter-spacing: 0.12em;
  margin: 0;
  color: var(--glow);
  text-shadow: 0 0 18px rgba(125, 255, 160, 0.45);
}

.wordmark span {
  color: var(--ink);
  margin-left: 0.4em;
  opacity: 0.75;
}

.tagline {
  margin: 0.25rem 0 2.5rem;
  color: var(--dim);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
}

.prose {
  min-height: 5.5em;
  margin: 0 0 1.75rem;
  color: var(--ink);
}

.prose::after {
  content: '\258B';
  color: var(--glow);
  animation: blink 1.1s steps(1) infinite;
}

.prose.done::after { content: ''; }

@keyframes blink { 50% { opacity: 0; } }

.prompt-line {
  color: var(--amber);
  margin: 0 0 1rem;
  letter-spacing: 0.06em;
}

.doors {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.door {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  background: rgba(125, 255, 160, 0.02);
  transition: border-color 120ms, background 120ms, transform 120ms;
}

.door:hover,
.door:focus-visible {
  border-color: var(--glow);
  border-left-color: var(--glow);
  background: rgba(125, 255, 160, 0.07);
  transform: translateX(3px);
  outline: none;
}

.door-num {
  flex: 0 0 auto;
  width: 1.6em;
  height: 1.6em;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--line);
  color: var(--glow);
  font-weight: 700;
  font-size: 0.85rem;
}

.door:hover .door-num,
.door:focus-visible .door-num {
  background: var(--glow);
  color: #06120b;
}

.door-body { display: grid; gap: 0.15rem; }
.door-body strong { font-weight: 600; }

.door-body em {
  font-style: normal;
  color: var(--dim);
  font-size: 0.87rem;
  line-height: 1.5;
}

.hub-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.75rem;
}

.presence-badge { color: var(--dim); }
.presence-badge.is-online { color: var(--glow); }

kbd {
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 3px;
  padding: 0 0.35em;
  font: inherit;
  color: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  .prose::after { animation: none; }
  .door { transition: none; }
}