/* Notion-style peek panel: right-side slide-in for /wiki/* links.
   All rules are scoped under .peek-* to avoid leaking into the page. */

/* z-index: stays above topbar (100) and sidebar (200), below qa-popover (1000)
   and edit-modal (1001) so popovers/modals triggered inside the panel surface
   correctly above it. */
.peek-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 500;
}
.peek-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.peek-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(720px, max(480px, 40vw));
  max-width: 95vw;
  background: var(--bg, #fff);
  color: var(--text, #1a1a1a);
  border-left: 1px solid var(--border, #dcdcdc);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.12);
  transform: translateX(100%);
  transition: transform 250ms ease;
  z-index: 501;
  display: flex;
  flex-direction: column;
  outline: none;
}
.peek-panel.peek-width-320 { width: 320px; }
.peek-panel.peek-width-400 { width: 400px; }
.peek-panel.peek-width-480 { width: 480px; }
.peek-panel.peek-width-560 { width: 560px; }
.peek-panel.peek-width-640 { width: 640px; }
.peek-panel.peek-width-720 { width: 720px; }
.peek-panel.peek-width-800 { width: 800px; }
.peek-panel.peek-width-960 { width: 960px; }
.peek-panel.peek-width-1120 { width: 1120px; }
.peek-panel.peek-width-1280 { width: 1280px; }
.peek-panel.peek-width-1400 { width: 1400px; }
body.peek-panel-open { overflow: hidden; }
.peek-panel.is-open {
  transform: translateX(0);
}
.peek-panel:focus-visible {
  outline: 2px solid #fff;
  outline-offset: -4px;
  box-shadow: inset 0 0 0 5px var(--focus-ring, #005fcc);
}

/* Resize handle on the left edge — invisible 8px hit area with a visible
   1px line on hover/active. Disabled on mobile (panel is full-screen). */
.peek-resize-handle {
  position: absolute;
  top: 0;
  left: -12px;
  width: 24px;
  height: 100%;
  cursor: ew-resize;
  z-index: 1;
  touch-action: none;
}
.peek-resize-handle::after {
  content: "";
  position: absolute;
  top: 0;
  left: 11px;
  width: 2px;
  height: 100%;
  background: transparent;
  transition: background 150ms ease;
}
.peek-resize-handle:hover::after,
body.peek-resizing .peek-resize-handle::after {
  background: var(--namu-green, #00a495);
}
.peek-resize-handle:focus-visible::after {
  background: Highlight;
  width: 4px;
  left: 10px;
}
/* Suspend transition + select while dragging so resize feels immediate. */
body.peek-resizing {
  cursor: ew-resize;
  user-select: none;
}
body.peek-resizing .peek-panel {
  transition: none;
}

.peek-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-alt, #f6f6f6);
  border-bottom: 1px solid var(--border, #dcdcdc);
  flex: 0 0 auto;
  min-height: var(--topbar-height, 44px);
}

/* Defeat .page-body h2 (green pill) inheritance for the header title — the
   title isn't article content, so it should stay as plain header text. */
.peek-panel .peek-title {
  flex: 1 1 auto;
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0;
  padding: 0;
  background: transparent;
  color: var(--text, #1a1a1a);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.peek-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
}

.peek-button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text, #1a1a1a);
  font: inherit;
  font-size: 0.95rem;
  line-height: 1;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.peek-button:hover {
  background: var(--bg-hover, #eaeaea);
}
.peek-button:focus-visible {
  outline: 2px solid var(--namu-green, #00a495);
  outline-offset: 1px;
}
.peek-button[hidden] {
  display: none;
}

.peek-back {
  font-size: 0.95rem;
}

.peek-content {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: auto;
  padding: 20px 28px 40px;
  background: var(--bg, #fff);
  -webkit-overflow-scrolling: touch;
}
/* Article inside the panel uses the same .page-body styles as full pages,
   but drops the top margin on the first heading so it hugs the header. */
.peek-content .peek-article {
  margin: 0;
}
.peek-content .page-body > :first-child {
  margin-top: 0;
}

.peek-loading,
.peek-error {
  padding: 24px;
  text-align: center;
  color: var(--text-muted, #6b6b6b);
}

.peek-error {
  color: #c0392b;
}
.peek-error .peek-button {
  margin-top: 12px;
  border-color: var(--border, #dcdcdc);
}

.peek-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  vertical-align: -2px;
  margin-right: 6px;
  animation: peek-spin 0.8s linear infinite;
}
@keyframes peek-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .peek-panel {
    width: 100vw !important;
    border-left: none;
  }
  .peek-resize-handle {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .peek-panel,
  .peek-backdrop {
    transition: none;
  }
  .peek-spinner {
    animation: none;
  }
}