/**
 * Glass tip — subtle helper panel (GitHub / Notion / Linear style)
 * Lightweight, muted, non-intrusive. Theme-aware + reduced-motion safe.
 */

:root {
  --glass-tip-icon: var(--brand-neutral, #75787B);
  --glass-tip-icon-hover: var(--brand-primary, #1a585e);
  --glass-tip-bg: #f3f4f6; /* soft light grey — blends with page */
  --glass-tip-border: #e5e7eb;
  --glass-tip-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
  --glass-tip-title: var(--brand-ink, #1f2937);
  --glass-tip-text: #6b7280;
  --glass-tip-blur: 6px;
}

html[data-bs-theme="dark"],
body.layout-dark,
[data-theme="dark"] {
  --glass-tip-icon: #94a3b8;
  --glass-tip-icon-hover: #5eead4;
  --glass-tip-bg: #1f2937;
  --glass-tip-border: #374151;
  --glass-tip-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  --glass-tip-title: #e5e7eb;
  --glass-tip-text: #9ca3af;
}

.glass-tip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  color: var(--glass-tip-icon);
  line-height: 1;
  cursor: help;
  vertical-align: middle;
  border-radius: 999px;
  transition: color 0.16s ease, opacity 0.16s ease;
  opacity: 0.72;
  outline: none;
}

.glass-tip-trigger:hover,
.glass-tip-trigger:focus-visible,
.glass-tip-trigger.is-open {
  color: var(--glass-tip-icon-hover);
  opacity: 1;
}

.glass-tip-trigger:focus-visible {
  box-shadow: 0 0 0 2px rgba(63, 174, 178, 0.22);
}

.glass-tip-icon {
  width: 16px;
  height: 16px;
  display: block;
  flex-shrink: 0;
  pointer-events: none;
}

.glass-tip-trigger--lg .glass-tip-icon {
  width: 18px;
  height: 18px;
}

[data-glass-tip].site-chip,
[data-glass-tip].site-badge-new,
.site-chip[data-glass-tip],
.site-badge-new[data-glass-tip] {
  cursor: help;
}

.glass-tip {
  position: fixed;
  z-index: var(--shell-z-fab, 1080);
  max-width: 280px;
  min-width: 160px;
  padding: 10px 12px;
  border-radius: 11px;
  border: 1px solid var(--glass-tip-border);
  background: var(--glass-tip-bg);
  backdrop-filter: blur(var(--glass-tip-blur));
  -webkit-backdrop-filter: blur(var(--glass-tip-blur));
  box-shadow: var(--glass-tip-shadow);
  color: var(--glass-tip-text);
  pointer-events: none;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 0.17s ease, transform 0.17s ease;
  will-change: opacity, transform;
}

.glass-tip.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.glass-tip[data-placement="bottom"].is-visible {
  transform: translateY(0);
}

.glass-tip:not(.is-visible)[data-placement="bottom"] {
  transform: translateY(-5px);
}

.glass-tip-title {
  display: block;
  margin: 0 0 3px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--glass-tip-title);
  line-height: 1.4;
}

.glass-tip-body {
  margin: 0;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--glass-tip-text);
}

.glass-tip-body:only-child,
.glass-tip:not(:has(.glass-tip-title)) .glass-tip-body {
  margin-top: 0;
}

.glass-tip-arrow {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--glass-tip-bg);
  border: 1px solid var(--glass-tip-border);
  transform: rotate(45deg);
  pointer-events: none;
}

.glass-tip[data-placement="top"] .glass-tip-arrow {
  bottom: -4px;
  border-top: 0;
  border-left: 0;
}

.glass-tip[data-placement="bottom"] .glass-tip-arrow {
  top: -4px;
  border-bottom: 0;
  border-right: 0;
}

.glass-tip[data-placement="left"] .glass-tip-arrow {
  right: -4px;
  border-bottom: 0;
  border-left: 0;
}

.glass-tip[data-placement="right"] .glass-tip-arrow {
  left: -4px;
  border-top: 0;
  border-right: 0;
}

@media (prefers-reduced-motion: reduce) {
  .glass-tip-trigger,
  .glass-tip {
    transition: none !important;
  }

  .glass-tip {
    transform: none !important;
  }
}