/* ═══════════════════════════════════════════════════════════════════
   GLOSSARY TOOLTIP — Pure CSS + progressive JS enhancement
   Auto-linked glossary terms with hover/focus popup.
   Uses SIAI Design System v2 tokens exclusively.

   Structure:
   .gl-tip              → wrapper (inline)
   .gl-tip__trigger     → the linked term (underline-dotted)
   .gl-tip__popup       → tooltip card
   .gl-tip__head        → term title inside popup
   .gl-tip__def         → short definition
   .gl-tip__cta         → "Mehr erfahren" link
   .gl-tip__arrow       → CTA arrow icon
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Wrapper ─── */
.gl-tip {
  position: relative;
  display: inline;
}

/* ─── Trigger (the linked term) ─── */
.gl-tip__trigger {
  color: inherit;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-color: var(--color-secondary-400, #B0924E);
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  cursor: help;
  transition: text-decoration-color var(--duration-fast, 150ms) var(--ease-smooth, ease);
}

.gl-tip__trigger:hover,
.gl-tip__trigger:focus-visible {
  text-decoration-color: var(--color-secondary-700, #74612C);
  text-decoration-style: solid;
}

/* ─── Popup (tooltip card) ─── */
.gl-tip__popup {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 320px;
  min-width: 200px;
  padding: var(--space-4, 1rem) var(--space-5, 1.25rem);
  background: var(--sf-elevated, #fff);
  border: 1px solid var(--bd-primary, #E4E4E7);
  border-radius: var(--radius-lg, 0.75rem);
  box-shadow: var(--shadow-lg, 0 8px 32px rgba(0,0,0,0.10));
  z-index: 100;

  /* Hidden by default */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--duration-base, 250ms) var(--ease-default),
    visibility var(--duration-base, 250ms);
}

/* Hover bridge — invisible area connecting popup to trigger across the gap.
   Overrides parent's visibility:hidden / pointer-events:none so the bridge
   stays interactive even when the popup is hidden. This lets the mouse travel
   from the trigger text up to the popup without losing :hover on .gl-tip. */
.gl-tip__popup::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 14px;
  visibility: visible;
  pointer-events: auto;
}

/* Arrow (CSS triangle pointing down) */
.gl-tip__popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: var(--sf-elevated, #fff);
  filter: drop-shadow(0 2px 2px rgba(0,0,0,0.06));
}

/* Show on hover or focus-within (desktop) */
.gl-tip:hover .gl-tip__popup,
.gl-tip:focus-within .gl-tip__popup {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ─── Popup content ─── */
.gl-tip__head {
  display: block;
  font-size: var(--text-sm, 0.8125rem);
  font-weight: var(--weight-semibold, 600);
  color: var(--tx-primary, #1A1A2E);
  letter-spacing: var(--tracking-wide, 0.08em);
  text-transform: uppercase;
  margin-bottom: var(--space-2, 0.5rem);
}

.gl-tip__def {
  display: block;
  font-size: var(--text-sm, 0.8125rem);
  line-height: var(--leading-normal, 1.5);
  color: var(--tx-secondary, #52525B);
  margin-bottom: var(--space-3, 0.75rem);
}

.gl-tip__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--weight-medium, 500);
  color: var(--color-secondary-700, #74612C);
  text-decoration: none;
  transition: color var(--duration-fast, 150ms) var(--ease-smooth);
}

.gl-tip:hover .gl-tip__cta {
  color: var(--color-secondary, #9C8243);
}

.gl-tip__arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--duration-fast, 150ms) var(--ease-default);
}

.gl-tip:hover .gl-tip__arrow {
  transform: translateX(2px);
}

/* ─── Responsive: flip to bottom on small screens / near top ─── */
.gl-tip--below .gl-tip__popup {
  bottom: auto;
  top: calc(100% + 10px);
}

.gl-tip--below .gl-tip__popup::before {
  top: auto;
  bottom: 100%;
}

.gl-tip--below .gl-tip__popup::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: var(--sf-elevated, #fff);
}

/* ─── Mobile: touch-activated via JS (.gl-tip--open) ─── */
@media (hover: none) {
  /* Disable CSS hover on touch devices */
  .gl-tip:hover .gl-tip__popup {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  /* JS adds .gl-tip--open on tap */
  .gl-tip--open .gl-tip__popup {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

/* ─── Mobile positioning: full-width popup ─── */
@media (max-width: 480px) {
  .gl-tip__popup {
    position: fixed;
    bottom: var(--space-4, 1rem);
    left: var(--space-4, 1rem);
    right: var(--space-4, 1rem);
    top: auto;
    transform: none;
    max-width: none;
    width: auto;
    border-radius: var(--radius-xl, 1rem);
    box-shadow: var(--shadow-2xl);
  }

  .gl-tip__popup::after {
    display: none;
  }
}

/* ─── Dark section support ─── */
.sec--dark .gl-tip__trigger {
  text-decoration-color: var(--color-secondary-300, #C4A35A);
}

.sec--dark .gl-tip__trigger:hover {
  text-decoration-color: var(--color-secondary, #9C8243);
}

.sec--dark .gl-tip__popup {
  background: #1A1A2E;
  border-color: rgba(255, 255, 255, 0.1);
}

.sec--dark .gl-tip__popup::after {
  border-top-color: #1A1A2E;
}

.sec--dark .gl-tip--below .gl-tip__popup::after {
  border-top-color: transparent;
  border-bottom-color: #1A1A2E;
}

.sec--dark .gl-tip__head {
  color: rgba(255, 255, 255, 0.9);
}

.sec--dark .gl-tip__def {
  color: rgba(255, 255, 255, 0.6);
}

.sec--dark .gl-tip__cta {
  color: var(--color-secondary-300, #C4A35A);
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  .gl-tip__popup {
    transition: none;
  }
  .gl-tip__arrow {
    transition: none;
  }
}