:root {
  --bg: #0b0b0c;
  --panel: #161618;
  --panel-2: #1d1d20;
  --text: #f4f4f4;
  --muted: #b7b7bc;
  --line: #2b2b31;
  --accent: #d4af37;
  --accent-dark: #9a7a1e;
  --radius: 18px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.26);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(180deg, #0b0b0c 0%, #111214 100%);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
code {
  background: #121214;
  border: 1px solid var(--line);
  padding: 0.12rem 0.35rem;
  border-radius: 8px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  position: sticky;
  top: 0;
  backdrop-filter: blur(18px);
  background: rgba(11, 11, 12, 0.82);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  z-index: 50;
}
.topbar h1 { margin: 0; font-size: 1.5rem; }
.brand-kicker, .eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; }
.container {
  width: min(1100px, calc(100% - 1.25rem));
  margin: 0 auto;
  padding: 1rem 0 5rem;
}
.grid {
  display: grid;
  gap: 1rem;
}
.two-up { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem;
  margin-bottom: 1rem;
}
.hero h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); margin: 0.4rem 0 0.75rem; }
.hero-actions, .stack-sm, .section-header {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}
.section-header { justify-content: space-between; }
.muted { color: var(--muted); line-height: 1.55; }
.button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent) 0%, #b38d25 100%);
  color: #111;
  font-weight: 700;
  padding: 0.85rem 1.1rem;
  cursor: pointer;
}
.button-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.button-small { padding: 0.55rem 0.85rem; }
.list {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.75;
}
.scheduler-shell {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: #0d0d0f;
  min-height: 70vh;
}
iframe {
  width: 100%;
  min-height: 70vh;
  border: 0;
  background: #fff;
}
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(12,12,14,0.95);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.bottom-nav a {
  padding: 0.95rem 0.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}
.hidden { display: none !important; }

@media (max-width: 640px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .container { width: min(100% - 0.9rem, 1100px); }
}


.install-prompt {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.install-prompt h3 { margin: 0.2rem 0 0.4rem; text-transform: uppercase; letter-spacing: 0.04em; }
.install-copy { flex: 1 1 320px; }
@media (max-width: 640px) {
  .install-prompt {
    flex-direction: column;
    align-items: flex-start;
  }
}