/* Homepage. Tokens, top bar and buttons come from simulations/shared/base.css. */

.home {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  padding: 56px 0 44px;
}

.hero h1 {
  margin: 10px 0 14px;
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  letter-spacing: -0.03em;
}

.hero-lead {
  max-width: 52ch;
  color: var(--muted);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 28px;
}

.hero-actions .btn {
  min-height: 48px;
  padding: 10px 20px;
  font-size: 1rem;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin: 0;
}

.hero-stats dt {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-stats dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.hero-demo {
  padding: 18px;
}

.hero-demo canvas {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
}

.hero-demo p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ---------- Finder ---------- */

.finder {
  position: sticky;
  top: var(--bar-h);
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0 -24px;
  padding: 12px 24px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.finder .search-input {
  width: 100%;
  min-height: 46px;
  background: var(--surface);
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.filter-chips {
  display: flex;
  flex: 1;
  gap: 8px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px;
}

.filter-chips::-webkit-scrollbar {
  display: none;
}

.chip {
  flex: none;
  min-height: 38px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--surface);
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
  cursor: pointer;
}

.chip:hover {
  border-color: var(--topic, var(--brand));
}

.chip[aria-pressed="true"] {
  background: var(--topic, var(--ink));
  border-color: var(--topic, var(--ink));
  color: var(--surface);
}

.tier-select select {
  min-height: 38px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-weight: 600;
  font-size: 0.88rem;
}

.result-note {
  min-height: 1.5em;
  margin: 14px 0 0;
  color: var(--muted);
  font-weight: 600;
}

/* ---------- Library ---------- */

.topic {
  margin-top: 26px;
  scroll-margin-top: calc(var(--bar-h) + 130px);
}

.topic-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.topic-number {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--topic);
  color: var(--surface);
  font-weight: 800;
}

.topic-head h2 {
  font-size: 1.35rem;
}

.topic-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 14px;
}

.lab-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border-top: 4px solid var(--topic);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.lab-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.lab-card-meta {
  display: flex;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 800;
}

.lab-card-meta span {
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--topic);
}

.lab-card-meta em {
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--topic);
  color: var(--surface);
  font-style: normal;
}

.lab-card h3 {
  font-size: 1.15rem;
}

.lab-card p {
  flex: 1;
  color: var(--muted);
  font-size: 0.93rem;
}

.lab-card strong {
  color: var(--topic);
  font-size: 0.9rem;
}

.site-foot {
  padding: 28px 24px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

@media (max-width: 860px) {
  .home {
    padding: 0 16px 40px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 28px 0 24px;
  }

  .hero-stats {
    gap: 24px;
  }

  .finder {
    margin: 0 -16px;
    padding: 10px 16px;
  }

  /* Chips and the tier menu scroll together as one row on phones. */
  .filter-row {
    overflow-x: auto;
    scrollbar-width: none;
  }

  .filter-row::-webkit-scrollbar {
    display: none;
  }

  .filter-chips {
    flex: none;
    overflow: visible;
  }

  .topic {
    scroll-margin-top: calc(var(--bar-h) + 120px);
  }
}

.hero-logo {
  margin: 0 0 14px;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
}