/* ===== Shell / Nav / Shared layout ===== */
.app-shell { min-height: 100vh; position: relative; }

/* Top bar */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 20px 32px; display: flex; align-items: center; justify-content: space-between;
  mix-blend-mode: difference; color: #F5F1E8;
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.topbar .brand {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: -0.01em;
}
.topbar .brand svg { width: 28px; height: 28px; }
.topbar .nav {
  display: flex; gap: 2px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
}
.topbar .nav a {
  padding: 8px 14px;
  border-radius: 999px;
  position: relative;
  transition: background 200ms;
}
.topbar .nav a.active { background: rgba(255,255,255,0.14); }
.topbar .nav a:hover { background: rgba(255,255,255,0.08); }
.topbar .nav a .num { opacity: 0.5; margin-right: 6px; }

.topbar .tools { display: flex; gap: 12px; align-items: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.topbar .tools button { padding: 8px 12px; border-radius: 999px; }
.topbar .tools button:hover { background: rgba(255,255,255,0.1); }

/* Mobile nav */
@media (max-width: 900px) {
  .topbar { padding: 16px 20px; }
  .topbar .nav { display: none; }
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 64px 32px 32px;
  margin-top: 120px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 16px; color: var(--fg-muted); font-weight: 400; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; font-family: var(--font-sans); font-size: 14px; }
.footer .big {
  font-family: var(--font-serif); font-size: clamp(48px, 8vw, 120px); line-height: 0.9; letter-spacing: -0.03em;
  margin: 48px 0 24px;
}
.footer-meta { display: flex; justify-content: space-between; margin-top: 64px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted); }
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer { padding: 48px 20px 24px; }
}

/* Section common */
.section { padding: 120px 32px; position: relative; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 64px; border-bottom: 1px solid var(--line); padding-bottom: 24px; }
.section-head .eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted); }
.section-head .title { font-family: var(--font-serif); font-size: clamp(36px, 5vw, 72px); letter-spacing: -0.02em; line-height: 1; margin: 0; }
.section-head .count { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; color: var(--fg-muted); }

@media (max-width: 900px) {
  .section { padding: 72px 20px; }
  .section-head { flex-direction: column; gap: 12px; margin-bottom: 32px; }
}

/* Card */
.card {
  border: 1px solid var(--line);
  padding: 24px;
  position: relative;
  transition: background 300ms var(--ease-brand), transform 300ms var(--ease-brand);
  overflow: hidden;
}
.card:hover { background: var(--fg); color: var(--bg); }
.card .card-num { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; color: var(--fg-muted); }
.card:hover .card-num { color: var(--bg); opacity: 0.7; }
.card .card-title { font-family: var(--font-serif); font-size: 32px; letter-spacing: -0.02em; line-height: 1.05; margin: 16px 0 12px; }
.card .card-desc { font-size: 14px; line-height: 1.5; color: var(--fg-muted); }
.card:hover .card-desc { color: var(--bg); opacity: 0.8; }
.card .card-meta { display: flex; gap: 12px; margin-top: 24px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; }

/* Button */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  transition: background 200ms, color 200ms;
}
.btn:hover { background: var(--fg); color: var(--bg); }
.btn-accent { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-accent:hover { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn .arrow { display: inline-block; transition: transform 200ms; }
.btn:hover .arrow { transform: translateX(4px); }

/* Placeholder image */
.placeholder {
  background: repeating-linear-gradient(135deg, var(--line-soft) 0 1px, transparent 1px 12px);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-muted);
  aspect-ratio: 4/3;
}

/* Page transition */
.page { animation: pageIn 600ms var(--ease-brand) both; }
@keyframes pageIn { from { opacity: 0; transform: translateY(calc(20px * var(--motion))); } to { opacity: 1; transform: none; } }

/* Marquee */
.marquee { overflow: hidden; white-space: nowrap; display: flex; }
.marquee-inner { display: inline-flex; gap: 48px; animation: marquee 40s linear infinite; }
.marquee-inner.reverse { animation-direction: reverse; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Tag */
.tag { display: inline-flex; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; }
.tag.solid { background: var(--fg); color: var(--bg); }
.tag.accent { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

/* Tweaks panel */
.tweaks {
  position: fixed; bottom: 24px; right: 24px; z-index: 200;
  background: var(--bg); border: 1px solid var(--line);
  padding: 20px; width: 280px;
  font-family: var(--font-mono); font-size: 11px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  display: none;
}
.tweaks.show { display: block; }
.tweaks h5 { margin: 0 0 16px; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; display: flex; justify-content: space-between; align-items: center; }
.tweaks .row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; gap: 12px; }
.tweaks .row label { color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.1em; font-size: 10px; }
.tweaks .seg { display: inline-flex; border: 1px solid var(--line); }
.tweaks .seg button { padding: 6px 10px; font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; border-right: 1px solid var(--line); }
.tweaks .seg button:last-child { border-right: none; }
.tweaks .seg button.active { background: var(--fg); color: var(--bg); }
.tweaks .swatches { display: inline-flex; gap: 6px; }
.tweaks .swatches button { width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--line); padding: 0; }
.tweaks .swatches button.active { outline: 2px solid var(--fg); outline-offset: 2px; }

/* Scroll-snap sub lists */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Split layout for interior pages */
.split { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 24px; } }

/* Hero container */
.hero { position: relative; min-height: 100vh; overflow: hidden; }