/* ── Grade-help banner ─────────────────────────────────────────────────────
 * A one-time, dismissible banner shown the first time a user opens the map or
 * the route-planner page, asking them to help grade path difficulty and
 * linking to the guide. Injected by js/grade-banner.js. Styles live here (the
 * site CSP forbids inline <script>, JS stays external).
 * ────────────────────────────────────────────────────────────────────────── */
.grade-banner {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 74px);
  transform: translateX(-50%) translateY(20px);
  z-index: 1200;
  width: min(520px, calc(100vw - 24px));
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: linear-gradient(135deg, #1e4d14, #2f7d32);
  color: #f0fdf4;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  font-family: 'Inter', system-ui, sans-serif;
  opacity: 0;
  transition: opacity .28s ease, transform .28s ease;
  pointer-events: none;
}
.grade-banner.grade-banner-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.grade-banner-emoji {
  font-size: 1.6rem;
  line-height: 1;
  flex: 0 0 auto;
}
.grade-banner-body {
  flex: 1 1 auto;
  min-width: 0;
}
.grade-banner-body p {
  margin: 0 0 6px;
  font-size: 0.86rem;
  line-height: 1.35;
}
.grade-banner-body strong { font-weight: 700; }
.grade-banner-cta {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.grade-banner-close {
  flex: 0 0 auto;
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: none;
  border-radius: 8px;
  width: 26px;
  height: 26px;
  font-size: 0.9rem;
  line-height: 1;
  cursor: pointer;
}
.grade-banner-close:hover { background: rgba(255, 255, 255, 0.28); }

/* On the map page the bottom action buttons + bottom-nav sit low, so lift the
   banner a touch higher; on desktop there's no bottom-nav. */
@media (min-width: 780px) {
  .grade-banner { bottom: calc(env(safe-area-inset-bottom, 0px) + 24px); }
}