/* Climate / disaster scenario picker — two-tier chip selector.
   Side-car of the main viewer, hidden via [hidden] until scenarios.json loads. */

.hud-scenarios {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.scenario-cats {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  justify-content: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  max-width: 100%;
}

.scenario-cats::-webkit-scrollbar { display: none; }

/* Sub-scenario row: visually nested under the picked category. The leading
   "↳" arrow + dashed inset background + smaller pill chips signal that
   these are children of the selected category, not peers of it. */
.scenario-intensities {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  max-width: 100%;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 150ms ease, transform 150ms ease;
}

.scenario-intensities::-webkit-scrollbar { display: none; }

.scenario-intensities:empty { display: none; }

.scenario-intensities.is-swapping {
  opacity: 0;
  transform: translateY(4px);
}

/* Leading "child of parent" indicator: corner-down-right arrow. Sits as the
   first flex item before the chips. */
.scenario-intensities::before {
  content: "";
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-right: 2px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='15 10 20 15 15 20'/><path d='M4 4v7a4 4 0 0 0 4 4h12'/></svg>") no-repeat center / contain;
  opacity: 0.45;
}

/* Chips: translucent surface, square-ish corners, monochrome on hover/select */
.scenario-chip {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--hud-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  scroll-snap-align: start;
  touch-action: manipulation;
  transition: background 140ms ease, border-color 140ms ease,
              color 140ms ease, transform 100ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.scenario-chip:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.22);
}

.scenario-chip:active { transform: scale(0.97); }

.scenario-chip:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.55);
  outline-offset: 2px;
}

.scenario-chip[aria-selected="true"],
.scenario-chip[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--text);
  font-weight: 600;
}

/* Inline icons inside category chips. Tiny, monochrome, follow text color. */
.scenario-chip .scenario-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: var(--text-dim);
  transition: color 140ms ease;
}

.scenario-chip[aria-selected="true"] .scenario-icon {
  color: var(--text);
}

/* Intensity chips look like children of the parent category: pill-shaped,
   smaller, more muted. Selected state still gets the strong fill so the
   active intensity reads at a glance. */
.scenario-chip.scenario-intensity {
  min-height: 28px;
  padding: 5px 11px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--text-dim);
}

.scenario-chip.scenario-intensity:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.26);
  color: var(--text);
}

.scenario-chip.scenario-intensity[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.36);
  color: var(--text);
  font-weight: 600;
}

@media (max-width: 720px) {
  .hud-scenarios { padding: 12px 12px; }
  .scenario-cats { justify-content: flex-start; }
  .scenario-chip {
    min-height: 38px;
    padding: 9px 12px;
    font-size: 13px;
  }
  .scenario-chip.scenario-intensity {
    min-height: 30px;
    padding: 6px 11px;
    font-size: 12px;
  }
}