/* ── Comic reader ───────────────────────────────────────────── */
.reader {
  position: fixed; inset: 0; z-index: 80;
  background: #050505;
  opacity: 0; transition: opacity .25s ease;
}
.reader[hidden] { display: none; }
.reader.open { opacity: 1; }

/* Page stage */
.rd-stage {
  position: absolute; inset: 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  touch-action: none; cursor: default;
}
.reader.zoomed .rd-stage { cursor: grab; }
.reader.zoomed .rd-stage:active { cursor: grabbing; }
.rd-page {
  max-width: 100vw; max-height: 100vh;
  user-select: none; -webkit-user-select: none; -webkit-user-drag: none;
  opacity: 0; transition: opacity .18s ease;
  will-change: transform;
}
.rd-page.in { opacity: 1; }

/* Loading spinner */
.rd-spin {
  position: absolute; left: 50%; top: 50%; margin: -14px 0 0 -14px;
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid rgba(242,240,234,0.15); border-top-color: var(--green, #78dc5a);
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.rd-spin.on { opacity: 1; animation: rdspin .8s linear infinite; }
@keyframes rdspin { to { transform: rotate(360deg); } }

/* Top chrome */
.rd-top {
  position: absolute; left: 0; right: 0; top: 0; z-index: 3;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.9rem 1.1rem calc(0.9rem + 18px);
  background: linear-gradient(to bottom, rgba(5,5,5,0.85), transparent);
  transition: opacity .3s ease; pointer-events: none;
}
.rd-top > * { pointer-events: auto; }
.rd-title { display: flex; flex-direction: column; gap: 2px; min-width: 0; align-items: flex-start; }
#rd-story { font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase; }
.rd-ch {
  display: inline-flex; align-items: center; gap: 0.4rem; max-width: 100%;
  font: inherit; font-size: 0.62rem; letter-spacing: 0.08em; color: rgba(242,240,234,0.55);
  background: none; border: 0; padding: 0; cursor: pointer;
  transition: color .2s;
}
.rd-ch:hover { color: #f2f0ea; }
#rd-chlabel { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rd-caret { font-size: 0.5rem; color: var(--green, #78dc5a); flex: none; }

/* Chapter dropdown */
.rd-chlist {
  position: absolute; left: 1.1rem; top: 4.2rem; z-index: 5;
  display: flex; flex-direction: column; gap: 2px; min-width: 240px;
  background: rgba(8,10,8,0.94); border: 1px solid rgba(242,240,234,0.14); border-radius: 12px;
  padding: 0.4rem;
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.55);
}
.rd-chlist[hidden] { display: none; }
.rd-chitem {
  font: inherit; font-size: 0.7rem; letter-spacing: 0.05em; text-align: left;
  color: #f2f0ea; background: transparent; border: 0; border-radius: 8px; cursor: pointer;
  padding: 0.55rem 0.7rem;
  transition: background .15s, color .15s;
}
.rd-chitem:hover { background: rgba(255,255,255,0.07); }
.rd-chitem.is-active { background: rgba(120,220,90,0.14); color: var(--green, #78dc5a); }
.rd-right { display: flex; align-items: center; gap: 0.7rem; }
.rd-count { font-size: 0.66rem; letter-spacing: 0.12em; color: rgba(242,240,234,0.6); font-variant-numeric: tabular-nums; }
.rd-btn {
  min-width: 34px; height: 34px; border-radius: 50%; cursor: pointer; padding: 0 0.5rem;
  border: 1px solid rgba(242,240,234,0.18); background: rgba(255,255,255,0.06); color: #f2f0ea;
  font: inherit; font-size: 0.72rem; display: inline-flex; align-items: center; justify-content: center;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  transition: border-color .2s, background .2s;
}
.rd-btn:hover { border-color: var(--green, #78dc5a); background: rgba(120,220,90,0.12); }

/* Side prev / next (desktop affordance) */
.rd-nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
  border: 1px solid rgba(242,240,234,0.16); background: rgba(5,5,5,0.5); color: #f2f0ea;
  font-size: 1.15rem; line-height: 1; display: flex; align-items: center; justify-content: center;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  transition: opacity .3s, border-color .2s, background .2s;
}
.rd-nav:hover { border-color: var(--green, #78dc5a); background: rgba(120,220,90,0.12); }
.rd-prev { left: 1rem; }
.rd-next { right: 3.4rem; }
.rd-nav.off { opacity: 0.18; pointer-events: none; }

/* Vertical progress rail (right edge) */
.rd-rail {
  position: absolute; right: 0.9rem; top: 50%; transform: translateY(-50%); z-index: 4;
  height: min(62vh, 560px); width: 26px;                 /* generous hit area */
  display: flex; justify-content: center; cursor: pointer;
  touch-action: none; transition: opacity .3s ease;
}
.rd-rail::before {
  content: ''; position: absolute; top: 0; bottom: 0; width: 3px;
  background: rgba(242,240,234,0.14); border-radius: 3px;
}
.rd-fill {
  position: absolute; top: 0; width: 3px; height: 0%;
  background: var(--green, #78dc5a); border-radius: 3px;
  transition: height .15s ease;
}
.rd-knob {
  position: absolute; top: 0; width: 11px; height: 11px; margin-top: -5px; border-radius: 50%;
  background: var(--green, #78dc5a); border: 2px solid #050505;
  transition: top .15s ease, transform .15s ease;
}
.reader.scrubbing .rd-knob { transform: scale(1.5); }
.rd-bubble {
  position: absolute; right: 26px; transform: translateY(-50%);
  font-size: 0.64rem; letter-spacing: 0.1em; font-variant-numeric: tabular-nums;
  background: rgba(5,5,5,0.85); border: 1px solid rgba(242,240,234,0.16); border-radius: 999px;
  padding: 0.3rem 0.6rem; white-space: nowrap;
  opacity: 0; transition: opacity .15s;
}
.reader.scrubbing .rd-bubble { opacity: 1; }

/* Bottom bar: prev · zoom cluster · next */
.rd-bottom {
  position: absolute; left: 50%; bottom: 1.1rem; transform: translateX(-50%); z-index: 3;
  display: flex; align-items: center; gap: 0.6rem;
  transition: opacity .3s ease;
}
.rd-zoom {
  display: flex; align-items: center; gap: 6px;
  background: rgba(5,5,5,0.6); border: 1px solid rgba(242,240,234,0.12); border-radius: 999px;
  padding: 4px;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.rd-zoom .rd-btn { border: 0; background: transparent; }
.rd-zoom .rd-btn:hover { background: rgba(120,220,90,0.14); }
#rd-zreset { font-size: 0.62rem; letter-spacing: 0.08em; color: rgba(242,240,234,0.7); min-width: 52px; }
.rd-pgbtn {
  border-radius: 999px; height: 42px; padding: 0 1.05rem;
  font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase;
  background: rgba(5,5,5,0.6); white-space: nowrap;
}
.rd-pgbtn.off { opacity: 0.3; pointer-events: none; }

/* Idle: chrome fades away for immersive reading (rail stays as a whisper) */
.reader.idle .rd-top,
.reader.idle .rd-bottom,
.reader.idle .rd-chlist,
.reader.idle .rd-nav { opacity: 0; pointer-events: none; }
.reader.idle .rd-rail { opacity: 0.35; }

@media (max-width: 640px) {
  .rd-nav { display: none; }                 /* touch: bottom buttons + tap zones + swipe */
  .rd-rail { right: 0.35rem; height: 56vh; }
  .rd-top { padding-right: 0.8rem; }
  .rd-bottom { bottom: calc(0.8rem + env(safe-area-inset-bottom)); gap: 0.45rem; }
  .rd-pgbtn { padding: 0 0.85rem; }
}