/* ---------- Pollutants grid ---------- */
.pollutants__header {
  margin-bottom: 1rem;
}

.btn-unit-toggle {
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn-unit-toggle:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.pollutants {
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  z-index: 3;
  background: rgba(12, 15, 25, 0.52);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.40),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.pollutants:hover {
  z-index: 4;
}

.theme-light .pollutants {
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.80);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.pollutants__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0;
}

.pollutants__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.pollutant-tile {
  background: rgba(255, 255, 255, 0.045);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  position: relative;
  cursor: default;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color var(--transition), background var(--transition);
}
.pollutant-tile:hover,
.pollutant-tile:focus {
  border-color: rgba(79, 142, 247, 0.55);
  background: rgba(255, 255, 255, 0.075);
  outline: none;
}

.theme-light .pollutant-tile {
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.72);
}
.theme-light .pollutant-tile:hover,
.theme-light .pollutant-tile:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.72);
}

.pollutant-tile__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
}

.pollutant-tile__name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pollutant-tile__info-icon {
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.6;
  cursor: help;
  transition: opacity var(--transition);
}
.pollutant-tile:hover .pollutant-tile__info-icon { opacity: 1; color: var(--accent); }

/* Tooltip popup */
.pollutant-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--text);
  width: 240px;
  box-shadow: var(--shadow);
  z-index: 300;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.pollutant-tooltip--visible {
  opacity: 1;
}

/* Small triangle pointing down */
.pollutant-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border);
}

.pollutant-tile__value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.pollutant-tile__unit {
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pollutant-tile__desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

/* ---------- Weather row ---------- */
.weather-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.weather-tile {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.045);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.theme-light .weather-tile {
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.72);
}

/* Temperature tile is a <button> — reset browser defaults, keep tile look */
.weather-tile--temp {
  /* Button reset */
  font-family: var(--font);
  font-size: inherit;
  line-height: inherit;
  cursor: pointer;
  text-align: left;
  appearance: none;
  -webkit-appearance: none;
  /* Keep tile sizing identical to sibling .weather-tile divs */
  white-space: nowrap;
  flex-shrink: 0;
  transition: border-color var(--transition), background var(--transition);
}
.weather-tile--temp:hover {
  border-color: var(--accent);
}

/* Small badge showing the unit you'd switch TO */
.temp-unit-badge {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 0 0.3rem;
  line-height: 1.5;
  opacity: 0.8;
  margin-left: 0.15rem;
  flex-shrink: 0;
}

.weather-tile__icon { font-size: 1rem; }

.weather-tile__label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.weather-tile__value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}