/* ── Topic card grid: title + icon only, centered ────────────────────────── */

.index-topic-grid .sd-card-text {
  display: none;
}

.index-topic-grid .sd-card-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.4rem 0.75rem 1rem;
  min-height: 5rem;
}

.index-topic-grid .sd-card-title {
  text-align: center;
  margin: 0;
  font-size: 0.9rem;
}

/* ── 1. Hover lift animation ─────────────────────────────────────────────── */

.index-topic-grid .sd-card {
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  cursor: pointer;
  border-radius: 0.75rem !important;
  overflow: hidden;
}

.index-topic-grid .sd-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14) !important;
}

/* ── Hover tooltip (dialog field) ────────────────────────────────────────── */

#card-tooltip {
  position: fixed;
  z-index: 8000;
  display: none;
  background: var(--pst-color-background, #fff);
  border: 1px solid var(--pst-color-border, #dee2e6);
  border-radius: 0.5rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  padding: 0.75rem 1rem;
  max-width: 260px;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--pst-color-text-base, #212529);
  pointer-events: none;
}

#card-tooltip.visible {
  display: block;
}

#card-tooltip::before {
  content: "";
  position: absolute;
  top: -7px;
  left: var(--arrow-left, 50%);
  transform: translateX(-50%);
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid var(--pst-color-border, #dee2e6);
}

#card-tooltip::after {
  content: "";
  position: absolute;
  top: -6px;
  left: var(--arrow-left, 50%);
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--pst-color-background, #fff);
}