/* ── Global Sentiment Heatmap ────────────────────────────────────────────── */
.heatmap-section {
  padding-block: var(--space-24);
  background: var(--surface);
}

.heatmap-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-8);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.heatmap-title {
  font-family: var(--font-headline);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  margin-bottom: var(--space-3);
}

.heatmap-sub {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(229, 226, 225, 0.35);
  max-width: 320px;
  line-height: 1.6;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-shrink: 0;
}

.heatmap-legend__item {
  font-family: var(--font-label);
  font-size: 0.575rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(229, 226, 225, 0.5);
}

.heatmap-legend__item::before {
  content: "";
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.heatmap-legend__item--fear::before {
  background: #800020;
}
.heatmap-legend__item--neutral::before {
  background: #3a3a3a;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.heatmap-legend__item--greed::before {
  background: #e9c349;
}

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 3px;
}

.heatmap-cell {
  aspect-ratio: 1 / 1;
  background: #262626;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: default;
  position: relative;
  transition:
    background-color 0.7s ease,
    transform 0.2s ease;
  overflow: visible;
}

.heatmap-cell--loading {
  animation: heatmap-pulse 1.6s ease-in-out infinite;
}

@keyframes heatmap-pulse {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 0.65;
  }
}

.heatmap-cell:hover {
  transform: scale(1.08);
  z-index: 5;
}

.heatmap-cell__code {
  font-family: var(--font-label);
  font-size: 0.575rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.heatmap-cell__score {
  font-family: var(--font-label);
  font-size: 0.5rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.heatmap-cell__tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(14, 14, 14, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-3) var(--space-4);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.heatmap-cell:hover .heatmap-cell__tooltip {
  opacity: 1;
}

.heatmap-cell__tooltip strong {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 700;
  color: #fff;
  display: block;
}

.heatmap-cell__tooltip span {
  font-family: var(--font-label);
  font-size: 0.575rem;
  color: rgba(229, 226, 225, 0.55);
  display: block;
}

.heatmap-footnote {
  margin-top: var(--space-6);
  font-family: var(--font-label);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(229, 226, 225, 0.2);
  text-align: right;
}

/* ── Heatmap: Tablet (≤ 900px) ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .heatmap-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* ── Heatmap: Mobile (≤ 600px) ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .heatmap-section {
    padding-block: var(--space-16);
  }

  .heatmap-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-5);
    margin-bottom: var(--space-8);
  }

  .heatmap-legend {
    gap: var(--space-4);
    flex-wrap: wrap;
  }

  .heatmap-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 2px;
  }

  .heatmap-cell__code {
    font-size: 0.6rem;
  }

  .heatmap-cell__score {
    font-size: 0.525rem;
  }

  .heatmap-footnote {
    text-align: left;
  }
}

/* ── Heatmap: Touch — disable hover effects ──────────────────────────────── */
@media (hover: none) {
  .heatmap-cell:hover {
    transform: none;
  }

  .heatmap-cell:hover .heatmap-cell__tooltip {
    opacity: 0;
  }
}