:root {
  --bg: #f6f8fb;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --surface-muted: #f8fafc;
  --text: #0f172a;
  --muted: #667085;
  --primary: #2563eb;
  --primary-2: #1d4ed8;
  --accent: #7c3aed;
  --border: #dbe4f0;
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.12);
  --danger: #b42318;
}

:root[data-theme="dark"] {
  --bg: #030712;
  --surface: rgba(10, 17, 34, 0.82);
  --surface-strong: rgba(17, 24, 39, 0.95);
  --surface-muted: #1f2937;
  --text: #f9fafb;
  --muted: #98a2b3;
  --primary: #60a5fa;
  --primary-2: #3b82f6;
  --accent: #a78bfa;
  --border: #334155;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --danger: #fda29b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.16), transparent 25%),
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.12), transparent 18%),
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0)),
    var(--bg);
}

a { color: inherit; text-decoration: none; }
button {
  font: inherit;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease;
}
button:hover { transform: translateY(-1px); }

.page-shell {
  max-width: 1220px;
  margin: 0 auto;
  padding: 1.5rem;
}

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 0.5rem 0 1.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}
.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.eyebrow {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 700;
}
.brand-name {
  display: block;
  font-size: 1.15rem;
  font-weight: 800;
}

.header-nav {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  color: var(--muted);
}
.header-nav a:hover { color: var(--text); }

.icon-btn,
.ghost,
.secondary,
.danger {
  background: var(--surface-muted);
  color: var(--text);
  border-color: var(--border);
}
.icon-btn {
  min-width: 52px;
  min-height: 52px;
}

.hero-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
  min-height: 70vh;
  padding: 2rem 0 1rem;
}

.hero-copy h1 {
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.03;
  margin: 0.3rem 0 1rem;
  letter-spacing: -0.04em;
}
.hero-chip {
  display: inline-flex;
  background: color-mix(in srgb, var(--primary) 12%, var(--surface-strong));
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--border));
  border-radius: 999px;
  padding: 0.5rem 0.75rem;
  font-weight: 700;
  font-size: 0.87rem;
}
.hero-subtitle {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-weight: 700;
}
.hero-description {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: 1.05rem;
}
.hero-actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin: 1.35rem 0 1.8rem;
}
.hero-cta,
.hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 1.05rem;
  border-radius: 14px;
  font-weight: 700;
}
.hero-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: var(--shadow);
}
.hero-secondary {
  background: var(--surface-muted);
  border: 1px solid var(--border);
}
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 0.85rem;
}
.hero-metrics div {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem;
  box-shadow: var(--shadow);
}
.hero-metrics strong {
  display: block;
  margin-bottom: 0.35rem;
}
.hero-metrics span {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  position: relative;
}
.hero-card-glow {
  position: absolute;
  inset: 4% 10% auto 10%;
  height: 280px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.35), rgba(124, 58, 237, 0.10), transparent 72%);
  filter: blur(30px);
  pointer-events: none;
}

.app-card,
.feature-card,
.notes-card,
.favorites-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.app-card {
  position: relative;
  border-radius: 28px;
  padding: 1.4rem;
  min-height: 430px;
}

.row { display: flex; align-items: center; gap: 0.75rem; }
.between { justify-content: space-between; }
.wrap-gap { flex-wrap: wrap; }

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.42rem 0.72rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 12%, var(--surface-strong));
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--border));
}
.pill.small { font-size: 0.75rem; padding: 0.25rem 0.55rem; }

.version-switcher {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
}
.version-btn {
  background: transparent;
  color: var(--muted);
  padding: 0.58rem 0.9rem;
}
.version-btn.active {
  background: var(--primary);
  color: white;
}

.status {
  min-height: 1.5rem;
  margin: 1rem 0 0.55rem;
  color: var(--muted);
}
.status.error { color: var(--danger); }

.verse-text {
  margin: 0;
  padding: 1.4rem;
  border-radius: 22px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  line-height: 1.85;
  white-space: pre-wrap;
  opacity: 0;
  transform: translateY(12px);
}
.app-card.verse-loaded .fade-in-target {
  animation: fadeVerse .75s ease forwards;
}
.reference {
  text-align: center;
  color: var(--muted);
  font-weight: 700;
  margin-top: 0.95rem;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}
.actions button:first-child {
  background: var(--primary);
  color: white;
}
.secondary,
.danger {
  border: 1px solid var(--border);
}
.danger { color: var(--danger); }

.feature-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.feature-card,
.notes-card,
.favorites-shell {
  border-radius: 24px;
  padding: 1.25rem;
}
.feature-card h2,
.notes-card h2,
.card-header h2 {
  margin: 0 0 0.55rem;
  font-size: 1.2rem;
}
.feature-card p,
.notes {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.notes-section {
  display: grid;
  grid-template-columns: 1fr;
  margin-bottom: 1.5rem;
}
.notes {
  padding-left: 1.15rem;
}
.notes li + li { margin-top: 0.55rem; }

.favorites-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}
.favorite-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: start;
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
}
.favorite-top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.55rem;
}
.favorite-text {
  margin: 0 0 0.55rem;
  line-height: 1.75;
  white-space: pre-wrap;
}
.favorite-date {
  color: var(--muted);
  font-size: 0.85rem;
}
.empty-state {
  padding: 1rem;
  border-radius: 18px;
  border: 1px dashed var(--border);
  color: var(--muted);
}

.reveal { animation: cardRise .55s ease both; }
@keyframes cardRise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeVerse {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; }
  .header-nav { display: none; }
  .hero-section { grid-template-columns: 1fr; }
  .hero-metrics, .feature-band { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .page-shell { padding: 1rem; }
  .app-card, .feature-card, .notes-card, .favorites-shell { padding: 1rem; border-radius: 20px; }
  .favorite-item { grid-template-columns: 1fr; }
  .actions button { width: 100%; }
}