/* ============================================================
   reader.css — inline essay reader modal
   Full-viewport book-style reader, opens from the Writing list.
   ============================================================ */

/* Body lock when reader open */
body.rdr-locked {
  overflow: hidden;
}

/* ── Backdrop (dim + blur, matches Fragments treatment) ── */
.rdr-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 14, 0.55);
  backdrop-filter: blur(10px) saturate(0.85);
  -webkit-backdrop-filter: blur(10px) saturate(0.85);
  z-index: 1090;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease-out;
  cursor: pointer;
}
.rdr-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* ── Reader shell ── */
.rdr {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: #f5f0e8;          /* parchment */
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  opacity: 0;
  transform: scale(0.97);
  transform-origin: 50% 40%;
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
  pointer-events: none;
  scrollbar-width: none;
  display: none;
}
.rdr::-webkit-scrollbar { width: 0; height: 0; display: none; }
.rdr.is-open {
  display: block;
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

/* ── Close button (fixed top-right) ── */
.rdr-close {
  position: fixed;
  top: 24px;
  right: 28px;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  font-family: var(--serif);
  font-size: 32px;
  line-height: 1;
  color: var(--ink-faint);
  cursor: pointer;
  z-index: 1110;
  transition: color 0.25s, transform 0.25s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.rdr-close:hover,
.rdr-close:focus-visible {
  color: var(--ink);
  transform: rotate(90deg);
  outline: none;
}

/* ── ESC hint (shared keyboard shortcut affordance) ── */
.esc-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono, 'JetBrains Mono', ui-monospace, monospace);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint, rgba(20, 18, 14, 0.42));
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
  transition: color 0.3s ease, opacity 0.3s ease;
}
.esc-hint .esc-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 18px;
  padding: 0 6px;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-size: 8.5px;
  letter-spacing: 0.16em;
  opacity: 0.72;
}
.esc-hint .esc-lbl {
  opacity: 0.62;
  font-size: 9px;
  letter-spacing: 0.18em;
}

/* Reader: pin alongside the × in top-right */
.rdr-close-esc {
  position: fixed;
  top: 32px;
  right: 74px;
  z-index: 1110;
}

/* Hide on touch / small screens — only useful with a keyboard */
@media (hover: none), (max-width: 720px) {
  .esc-hint { display: none; }
}

/* ── Scroll progress (right edge) ── */
.rdr-progress-track {
  position: fixed;
  top: 0;
  right: 0;
  width: 2px;
  height: 100vh;
  height: 100dvh;
  background: rgba(139, 26, 26, 0.06);
  z-index: 1108;
  pointer-events: none;
}
.rdr-progress-fill {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 0%;
  background: var(--accent);
  transition: height 0.05s linear;
}

/* ── Page column ── */
.rdr-page {
  max-width: 680px;
  margin: 0 auto;
  padding: 80px 60px 120px;
  box-sizing: border-box;
}

/* ── Header ── */
.rdr-head {
  margin-bottom: 56px;
}
.rdr-head .rdr-title {
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 0;
}
.rdr-head .rdr-title-zh {
  font-family: var(--cn);
  font-size: 18px;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  margin-top: 12px;
  font-weight: 400;
}
.rdr-head .rdr-rule {
  height: 1px;
  background: var(--rule);
  margin: 28px 0 20px;
  width: 64px;
}
.rdr-head .rdr-context {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-dim);
  max-width: 60ch;
}
.rdr-head .rdr-rule-bottom {
  height: 1px;
  background: var(--rule);
  margin: 36px 0 0;
  width: 100%;
}

/* ── Body text ── */
.rdr-body {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-soft);
  letter-spacing: 0.005em;
}
.rdr-body p {
  margin: 0 0 1.4em;
  text-wrap: pretty;
}
/* Section headers (e.g. roman-numeral movements) */
.rdr-body h3 {
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: 0.005em;
  margin: 2.4em 0 1em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--rule-soft);
}
.rdr-body h3:first-child {
  margin-top: 0;
}
.rdr-body em {
  font-style: italic;
  color: inherit;
}
.rdr-body .rdr-line-cn {
  font-family: var(--cn);
  font-size: 0.92em;
  color: var(--ink-dim);
  margin-left: 0.3em;
}

/* ── Language divider ── */
.rdr-divider {
  margin: 80px 0 56px;
  text-align: center;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--ink-faint);
}
.rdr-divider::before,
.rdr-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.rdr-divider span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.rdr-divider .rdr-divider-cn {
  font-family: var(--cn);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: none;
  color: var(--ink-dim);
}

/* ── Chinese body block ── */
.rdr-body-zh {
  font-family: var(--cn);
  font-size: 16px;
  line-height: 2.0;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.rdr-body-zh p {
  margin: 0 0 1.2em;
  text-indent: 2em;
  text-wrap: pretty;
}
.rdr-body-zh h3 {
  font-family: var(--cn);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: 0.08em;
  margin: 2.2em 0 1em;
  padding-bottom: 0.4em;
  border-bottom: 1px solid var(--rule-soft);
  text-indent: 0;
}
.rdr-body-zh h3:first-child {
  margin-top: 0;
}

/* ── Bottom back link ── */
.rdr-back {
  margin-top: 96px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-faint);
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  display: inline-block;
  transition: color 0.25s;
}
.rdr-back:hover,
.rdr-back:focus-visible {
  color: var(--ink-soft);
  outline: none;
}

/* ── Mobile ── */
@media (max-width: 720px) {
  .rdr-page {
    padding: 64px 28px 96px;
  }
  .rdr-head {
    margin-bottom: 40px;
  }
  .rdr-head .rdr-title {
    font-size: 26px;
  }
  .rdr-body {
    font-size: 16px;
    line-height: 1.85;
  }
  .rdr-body-zh {
    font-size: 15.5px;
    line-height: 1.95;
  }
  .rdr-close {
    top: 16px;
    right: 16px;
  }
  .rdr-divider {
    margin: 56px 0 40px;
  }
}