/* ============================================================
   Article stats row + back button.
   Colours come from the tokens defined in reading-theme.css, so both
   light and dark modes follow automatically.
   ============================================================ */

/* ---------- stats row ---------- */
.yh-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 10px 0 4px;
  font-size: 0.82rem;
  color: var(--yh-faint);
  line-height: 1.5;
}
.yh-stat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}
.yh-stat-label { color: var(--yh-faint); }
.yh-stat-num {
  font-variant-numeric: tabular-nums;
  color: var(--yh-muted);
  font-weight: 500;
}
.yh-stat-sep { color: var(--yh-line); user-select: none; }

/* eye glyph, drawn in CSS so no icon font is needed */
.yh-ico-eye {
  width: 13px;
  height: 13px;
  flex: none;
  background: currentColor;
  -webkit-mask: no-repeat center / contain
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M12 5c-5.5 0-9.6 4.3-10.7 6.3a1.5 1.5 0 0 0 0 1.4C2.4 14.7 6.5 19 12 19s9.6-4.3 10.7-6.3a1.5 1.5 0 0 0 0-1.4C21.6 9.3 17.5 5 12 5Zm0 11a4 4 0 1 1 0-8 4 4 0 0 1 0 8Zm0-2.2a1.8 1.8 0 1 0 0-3.6 1.8 1.8 0 0 0 0 3.6Z'/></svg>");
  mask: no-repeat center / contain
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M12 5c-5.5 0-9.6 4.3-10.7 6.3a1.5 1.5 0 0 0 0 1.4C2.4 14.7 6.5 19 12 19s9.6-4.3 10.7-6.3a1.5 1.5 0 0 0 0-1.4C21.6 9.3 17.5 5 12 5Zm0 11a4 4 0 1 1 0-8 4 4 0 0 1 0 8Zm0-2.2a1.8 1.8 0 1 0 0-3.6 1.8 1.8 0 0 0 0 3.6Z'/></svg>");
}
/* no data source: hide the row instead of showing dashes forever */
.yh-stats-unavailable { display: none !important; }

/* ---------- back button ---------- */
.yh-back {
  position: fixed;
  left: 24px;
  bottom: 28px;
  z-index: 40;

  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px 8px 11px;

  font-size: 0.8rem;
  font-family: inherit;
  color: var(--yh-muted);

  background: color-mix(in srgb, var(--yh-bg) 86%, transparent);
  border: 1px solid var(--yh-line);
  border-radius: 999px;
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.10);

  cursor: pointer;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease,
              color 180ms ease, border-color 180ms ease;
}
.yh-back.yh-back-shown {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.yh-back:hover {
  color: var(--yh-accent);
  border-color: color-mix(in srgb, var(--yh-accent) 45%, transparent);
}
.yh-back:active { transform: scale(0.97); }

.yh-ico-back {
  width: 13px;
  height: 13px;
  flex: none;
  background: currentColor;
  -webkit-mask: no-repeat center / contain
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M11.3 4.3a1 1 0 0 0-1.4-1.4l-7 7a1 1 0 0 0 0 1.4l7 7a1 1 0 1 0 1.4-1.4L5.4 11H20a1 1 0 1 0 0-2H5.4l5.9-5.9Z'/></svg>");
  mask: no-repeat center / contain
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M11.3 4.3a1 1 0 0 0-1.4-1.4l-7 7a1 1 0 0 0 0 1.4l7 7a1 1 0 1 0 1.4-1.4L5.4 11H20a1 1 0 1 0 0-2H5.4l5.9-5.9Z'/></svg>");
}

@media (max-width: 768px) {
  .yh-back { left: 14px; bottom: 16px; padding: 7px 11px; }
}
@media print {
  .yh-back, .yh-stats { display: none !important; }
}

/* ============================================================
   Layout: match innei.in. Measured on the reference at 1440px wide:
     article   x=160  w=920
     toc col   x=1096 w=200   (right margin 144px)
   i.e. article + right-hand TOC sit centred in the viewport with the TOC on
   the RIGHT. Volantis leaves .toc-wrapper in normal flow on desktop (its
   `position: fixed` rule only exists inside @media (max-width: 768px)), so we
   pin it ourselves and rebalance the gutters.
   ============================================================ */
@media (min-width: 1200px) {
  /* Volantis caps the whole content area at `max-width: 55vw` and does not
     centre it, which is why the column sat hard against the left edge. Widen
     it to the reference's proportions and centre it: at 1440px the reference
     puts the article at x=160 (w=920) and the TOC at x=1096 (w=200), i.e.
     a ~1152px block centred with even gutters. */
  .body-wrapper {
    max-width: 1152px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    /* Nudge left by 8px so the article lands at x=160, matching the reference.
       Uses relative offset, NOT `transform`: a transform on an ancestor makes
       that ancestor the containing block for `position: fixed` descendants,
       which silently broke the TOC's fixed positioning (it scrolled away). */
    position: relative;
    left: -8px;
  }
  #safearea { margin-left: 0 !important; margin-right: 0 !important; }

  /* inside that block the article keeps the left side and reserves the
     right-hand 232px for the TOC (200px card + 32px gap) */
  #l_main {
    margin-left: 0 !important;
    margin-right: 0 !important;
    padding-right: 232px !important;
    box-sizing: border-box !important;
  }

  /* the TOC: pinned on the RIGHT, aligned to the viewport's centre block */
  #l_side .toc-wrapper {
    position: fixed !important;
    top: 96px !important;
    right: auto !important;
    left: 50% !important;
    /* half the 1152px block (576) minus the card (200) + the gap */
    margin-left: 384px !important;   /* measured: puts the card at x=1096 @1440 */
    width: 200px !important;
    max-width: 200px !important;
    max-height: calc(100vh - 140px) !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    z-index: 20 !important;
  }

  /* the reading rail sits on the LEFT edge of the article, not the viewport */
  .yh-rail {
    width: 32px !important;
  }
  .yh-rail .yh-rail-track {
    top: 96px !important;
    bottom: 48px !important;
  }
  .yh-rail .yh-rail-readout {
    display: none !important;   /* the TOC names the headings already */
  }
}

/* narrower screens keep the theme's own behaviour */
@media (max-width: 1199px) {
  #l_side .toc-wrapper {
    position: fixed !important;
    top: 48px !important;
    right: 16px !important;
    left: auto !important;
    margin-left: 0 !important;
  }
  #l_main {
    margin-left: 0 !important;
    margin-right: 0 !important;
    padding-right: 0 !important;
  }
}