/* Hub view */
body[data-view="hub"] .hub-hero {
  display: grid;
  gap: 16px;
  padding: 32px 0 24px;
  max-width: 760px;
}

.hub-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: max-content;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
}

.hub-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

.hub-title {
  margin: 0;
  font-size: clamp(2.4rem, 4vw + 1rem, 4rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1;
  background: linear-gradient(180deg, #ffffff 0%, #a5acc4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hub-lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.55;
  max-width: 620px;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.riddle-card {
  position: relative;
  display: grid;
  grid-template-rows: 168px auto;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  width: 100%;
  padding: 0;
  font: inherit;
  color: inherit;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.riddle-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-2);
}

.riddle-card:hover .card-art { transform: scale(1.04); }

.card-art {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  transition: transform 400ms var(--ease);
}

.card-art svg {
  width: 100%;
  height: 100%;
  display: block;
}

.card-body {
  padding: 18px 20px 20px;
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--border);
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-category {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}

.card-difficulty {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-difficulty span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--dim);
}

.card-difficulty span.on { background: var(--accent); }

.card-title {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text);
}

.card-blurb {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.5;
}

/* Art backgrounds — riddle-themed */
.card-art.emperor {
  background: radial-gradient(120% 80% at 50% 110%, #5b193d, #1a0e22 70%);
}

.card-art.bulbs {
  background: linear-gradient(180deg, #1e2a4a 0%, #0b1226 100%);
}

.card-art.monty {
  background: radial-gradient(80% 100% at 50% 60%, #4d1421 0%, #1a0a14 70%);
}

.card-art.crossing {
  background: linear-gradient(180deg, #1a3a4a 0%, #0a1a2a 100%);
}

/* Section after grid */
.hub-footnote {
  margin-top: 36px;
  padding: 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.hub-footnote strong { color: var(--text); }