/* glossary.css — Contextual help popovers for DOCSIS terms */

.glossary-hint {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  margin-left: 4px;
  vertical-align: middle;
  /* Keyboard focusable via JS tabindex */
}
.glossary-hint:focus-visible {
  outline: 2px solid var(--amethyst);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Inside metric cards: position in top-left corner, reveal on hover */
.metric-card .glossary-hint {
  position: absolute;
  top: 10px;
  left: 10px;
  margin: 0;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.2s;
}
.metric-card:hover .glossary-hint,
.metric-card .glossary-hint:focus-visible {
  opacity: 1;
}

/* Inside modulation KPI strip: inline, no absolute positioning */
.mod-kpi-item .glossary-hint {
  margin-left: 0;
  order: -1;
}

.glossary-hint > i,
.glossary-hint > svg {
  width: 13px;
  height: 13px;
  color: var(--text-muted);
  opacity: 0.45;
  transition: opacity 0.2s, color 0.2s;
}

.glossary-hint:hover > i,
.glossary-hint:hover > svg {
  opacity: 1;
  color: var(--amethyst-light);
}

/* Hidden source text inside hints (JS copies to body-level overlay) */
.glossary-hint .glossary-popover {
  display: none !important;
}

/* Body-level overlay popover (appended by JS) */
body > .glossary-popover {
  display: none;
  position: fixed;
  width: max-content;
  max-width: 320px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 1.5;
  z-index: 9999;
  pointer-events: auto;
  white-space: normal;
  text-transform: none;
  letter-spacing: normal;
  text-align: left;
}

/* Arrow */
body > .glossary-popover::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -5px;
  transform: translateX(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background: var(--surface);
  border-left: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border);
}

body > .glossary-popover.above::before {
  top: auto;
  bottom: -5px;
  border-left: none;
  border-top: none;
  border-right: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}

/* Mobile: full width bottom sheet */
@media (max-width: 768px) {
  .glossary-hint {
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    margin-left: 0;
    border-radius: var(--radius-sm, 6px);
  }
  .metric-card .glossary-hint {
    top: 4px;
    left: 4px;
    opacity: 1;
  }
  .mod-kpi-item .glossary-hint {
    flex: 0 0 44px;
  }
  body > .glossary-popover {
    left: 16px !important;
    right: 16px;
    top: auto !important;
    bottom: calc(var(--bottom-nav-h) + 16px);
    width: auto;
    max-width: none;
  }
  body > .glossary-popover::before {
    display: none;
  }
}