#app { display: flex; flex-direction: column; height: 100vh; height: 100dvh; }

/* ── Top bar ─────────────────────────────────────────────── */
#topbar {
  height: var(--topbar-h);
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 16px;
  background: var(--bg-hull);
  border-bottom: 1px solid var(--line);
  z-index: 40;
}
.wordmark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.22em;
  color: var(--ink);
  white-space: nowrap;
}
.wordmark .by {
  display: block;
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  font-weight: 400;
}
.wordmark .by a { color: inherit; }
.wordmark .by a:hover { color: var(--data-cyan); text-decoration: none; }
#views { display: flex; gap: 4px; }
#views button {
  background: none;
  border: 1px solid transparent;
  color: var(--ink-dim);
  padding: 6px 14px;
  border-radius: 6px;
  letter-spacing: 0.04em;
}
#views button[aria-current="true"] {
  color: var(--data-cyan);
  border-color: var(--line);
  background: var(--bg-panel);
}
.top-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}

/* ── Main surfaces ───────────────────────────────────────── */
main { position: relative; flex: 1 1 auto; min-height: 0; }
main > section { position: absolute; inset: 0; }
main > section[hidden] { display: none; }

#view-map { overflow: hidden; }
#map { position: absolute; inset: 0; background: var(--bg-abyss); }

/* Floating glass rails over the map */
.rail {
  position: absolute;
  top: 12px;
  width: var(--rail-w);
  max-height: calc(100% - 24px);
  overflow-y: auto;
  z-index: 20;
}
#rail-left { left: 12px; }
#rail-right { right: 12px; }

.panel {
  background: var(--panel-glass);
  backdrop-filter: blur(var(--panel-blur));
  -webkit-backdrop-filter: blur(var(--panel-blur));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-glow);
  padding: 12px 14px;
  margin-bottom: 10px;
}
.panel h2 {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* Scrollable pages (Insights, Methodology) */
.page {
  overflow-y: auto;
  height: 100%;
  padding: 20px 20px calc(var(--scenario-h) + 32px);
}
.page-inner { max-width: 1060px; margin: 0 auto; }
.page h1 { font-size: 22px; margin: 6px 0 2px; }
.page .lede { color: var(--ink-dim); margin: 0 0 18px; max-width: 70ch; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }

/* ── Scenario rail (bottom) ──────────────────────────────── */
#scenario-rail {
  flex: 0 0 auto;
  min-height: var(--scenario-h);
  background: var(--panel-glass);
  backdrop-filter: blur(var(--panel-blur));
  -webkit-backdrop-filter: blur(var(--panel-blur));
  border-top: 1px solid var(--line);
  padding: 10px 18px 12px;
  display: flex;
  align-items: center;
  gap: 22px;
  z-index: 40;
}

/* ── Responsive: collapse rails into sheets ──────────────── */
@media (max-width: 860px) {
  :root { --rail-w: auto; }
  .rail {
    position: absolute;
    top: auto; left: 8px !important; right: 8px !important;
    max-height: 36vh;
  }
  #rail-left { bottom: 8px; display: none; }
  #rail-left.open { display: block; }
  #rail-right { bottom: 8px; }
  #rail-right .panel { margin-bottom: 6px; padding: 9px 12px; }
  /* Compact two-column readout sheet so the map stays visible above it */
  #rail-right .panel[aria-live] { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 14px; }
  #rail-right .panel[aria-live] h2 { grid-column: 1 / -1; margin-bottom: 4px; }
  #rail-right .readout { margin-bottom: 4px; }
  #rail-right .readout .value { font-size: 19px; }
  #rail-right .readout .sub { font-size: 10px; }
  #scenario-rail { flex-wrap: wrap; gap: 10px; padding: 10px 12px; }
  .grid-2 { grid-template-columns: 1fr; }
  #views button { padding: 6px 9px; font-size: 13px; }
  .top-right .chip { display: none; }
  .wordmark .strait-tag { display: none; }
}