/* =========================================================
   GhostScans — Mobile-First Chapter Reader Styles
   ========================================================= */

/* ---------- Reset / Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-ghost-bg);
  color: var(--color-ghost-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---------- Reader Container ---------- */
.reader {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  position: relative;
}

/* ---------- Site chrome ---------- */
/* The reader has its own fixed top bar (.reader-nav) — the site navbar
   would overlap it, so hide it on chapter pages. reader.css only loads
   on chapter pages, so this doesn't affect the rest of the site. */
.nav-main { display: none; }

/* Keep page content below the fixed reader bar */
.chapter-reader { padding-top: 2.75rem; }

/* ---------- Progress Bar ---------- */
.reader-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--color-ghost-accent);
  z-index: 1000;
  transition: width 0.15s ease-out;
  pointer-events: none;
}

/* ---------- Chapter Images ---------- */
.reader picture {
  display: block;
  width: 100%;
  line-height: 0;
  background: #000;
  position: relative;
}

/* Skeleton shimmer while the page image is still downloading — a plain
   black box reads as "empty/broken", this reads as "loading". */
.reader picture::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, transparent 30%, rgba(255,255,255,0.06) 50%, transparent 70%),
    #0a0a0c;
  background-size: 200% 100%, 100% 100%;
  animation: reader-shimmer 1.6s linear infinite;
}

.reader picture::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 42px; height: 42px;
  margin: -21px 0 0 -21px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.12);
  border-top-color: var(--color-ghost-accent, #f97316);
  animation: reader-spin 0.9s linear infinite;
}

.reader picture:has(img.loaded)::before,
.reader picture:has(img.loaded)::after,
.reader picture:has(img.error)::before,
.reader picture:has(img.error)::after {
  display: none;
}

@keyframes reader-shimmer {
  from { background-position: 200% 0, 0 0; }
  to { background-position: -200% 0, 0 0; }
}

@keyframes reader-spin {
  to { transform: rotate(360deg); }
}

.reader img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 200px;
  background: #000;
  opacity: 0;
  transition: opacity 0.4s ease-in;
  position: relative;
}

.reader img.loaded {
  opacity: 1;
}

.reader img.error {
  opacity: 0.3;
  filter: grayscale(1);
}

/* ---------- Dark / Light Mode Toggle ---------- */
.reader-toolbar {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 900;
}

.reader-toolbar button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-ghost-border);
  background: var(--color-ghost-surface);
  color: var(--color-ghost-text);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  transition: background 0.2s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.reader-toolbar button:active {
  transform: scale(0.95);
}

.reader-toolbar button:hover {
  background: var(--color-ghost-border);
}

/* ---------- Light Mode Overrides ---------- */
body.reader-light {
  background: #f5f5f5;
  color: #1a1a1a;
}

body.reader-light .reader-toolbar button {
  background: #fff;
  color: #1a1a1a;
  border-color: #ccc;
}

body.reader-light .reader picture::before {
  background: linear-gradient(90deg, #e0e0e0 25%, #eee 50%, #e0e0e0 75%);
  background-size: 200% 100%;
}

body.reader-light .reader img.error {
  opacity: 0.5;
  filter: none;
}

/* ---------- Top Nav Bar ---------- */
.reader-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: color-mix(in srgb, var(--color-ghost-bg) 90%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 800;
  border-bottom: 1px solid var(--color-ghost-border);
  transition: transform 0.3s ease;
}

body.reader-light .reader-nav {
  background: rgba(245, 245, 245, 0.9);
  border-bottom-color: #ddd;
}

.reader-nav.hidden {
  transform: translateY(-100%);
}

.reader-nav a,
.reader-nav button {
  color: var(--color-ghost-text);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
}

/* Long series titles used to shove the chapter label off the bar —
   the back link shrinks and ellipsizes instead. */
.reader-nav-back {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}
.reader-nav-title {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
}
.reader-nav .nav-chapter,
.reader-nav-home {
  flex: none;
}

/* Home is a glyph on the bar, not a word — keeps the row compact on phones. */
.reader-nav-home {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem;
}
.reader-nav-home svg { display: block; }

body.reader-light .reader-nav a,
body.reader-light .reader-nav button {
  color: #1a1a1a;
}

.reader-nav .nav-chapter {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Empty State ---------- */
.reader .empty {
  text-align: center;
  padding: 3rem 1rem;
  opacity: 0.6;
  font-size: 0.95rem;
}

/* ---------- Responsive ---------- */
@media (min-width: 768px) {
  .reader {
    max-width: 800px;
    padding: 0;
  }

  .reader-toolbar {
    bottom: 1.5rem;
    right: 1.5rem;
  }

  .reader-toolbar button {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }
}

@media (min-width: 1200px) {
  .reader {
    max-width: 900px;
  }
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Paged mode (animated) ---------- */
.reader-paged .reader {
  /* Normal in-flow block: scrolling past it behaves like any other section —
     the stage moves with the document, no pin/release weirdness. */
  position: relative;
  height: calc(100vh - 5.5rem);
  height: calc(100dvh - 5.5rem);
  min-height: 60vh;
  max-width: 100%;
  overflow: hidden;
  touch-action: pan-y;
}
.reader-paged .reader .reader-page {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  background: transparent;
  overflow: hidden;
}
.reader-paged .reader .reader-page::before,
.reader-paged .reader .reader-page::after { display: none; }
.reader-paged .reader .reader-page.active { opacity: 1; pointer-events: auto; }
.reader-paged .reader .reader-page img {
  width: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  min-height: 0;
  opacity: 1;
  margin: 0 auto;
}
@media (max-width: 767px) {
  .reader-paged .reader .reader-page img { width: 100%; max-height: 100%; }
}

/* Tall webtoon/manhua strips: instead of shrinking the whole strip into
   one viewport (unreadable), show it at reading width and page through
   viewport-height slices via translateY. */
.reader-paged .reader .reader-page.tall { align-items: flex-start; }
.reader-paged .reader .reader-page.tall img {
  width: min(100%, 900px);
  max-width: none;
  max-height: none;
  height: auto;
  object-fit: none;
  margin: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .reader-paged .reader .reader-page.tall img {
    transition: transform .3s cubic-bezier(.22,.61,.36,1);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .reader-paged .reader .reader-page.active.enter-right { animation: pg-enter-right .35s cubic-bezier(.22,.61,.36,1); }
  .reader-paged .reader .reader-page.active.enter-left { animation: pg-enter-left .35s cubic-bezier(.22,.61,.36,1); }
  .reader-paged .reader .reader-page.leaving.leave-left { animation: pg-leave-left .3s ease forwards; }
  .reader-paged .reader .reader-page.leaving.leave-right { animation: pg-leave-right .3s ease forwards; }
}
@keyframes pg-enter-right { from { opacity: 0; transform: translateX(56px); } }
@keyframes pg-enter-left { from { opacity: 0; transform: translateX(-56px); } }
@keyframes pg-leave-left { from { opacity: 1; transform: none; } to { opacity: 0; transform: translateX(-56px); } }
@keyframes pg-leave-right { from { opacity: 1; transform: none; } to { opacity: 0; transform: translateX(56px); } }

.reader-paged .reader-paged-ui {
  position: absolute;
  inset: 0;
  z-index: 60;
  pointer-events: none;
}
.reader-paged .reader-paged-ui > * { pointer-events: auto; }
.paged-zone {
  position: absolute;
  top: 0; bottom: 0;
  width: 30%;
  border: 0; background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.paged-prev { left: 0; }
.paged-next { right: 0; width: 40%; }
body.reader-rtl .paged-prev { left: auto; right: 0; }
body.reader-rtl .paged-next { right: auto; left: 0; width: 40%; }

/* Edge-hover chevrons on devices with a real pointer */
.paged-zone::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px; height: 40px;
  margin-top: -20px;
  border-radius: 50%;
  background: rgba(0,0,0,0.55) center / 20px 20px no-repeat;
  border: 1px solid rgba(255,255,255,0.18);
  opacity: 0;
  transition: opacity .2s;
}
.paged-prev::after {
  left: 0.75rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M15 6l-6 6 6 6'/%3E%3C/svg%3E");
}
.paged-next::after {
  right: 0.75rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M9 6l6 6-6 6'/%3E%3C/svg%3E");
}
@media (hover: hover) {
  .reader-paged-ui:hover .paged-zone::after { opacity: .85; }
  .reader-paged-ui:hover .paged-zone:hover::after { opacity: 1; }
}
body.reader-rtl .paged-prev::after { left: auto; right: 0.75rem; transform: scaleX(-1); }
body.reader-rtl .paged-next::after { right: auto; left: 0.75rem; transform: scaleX(-1); }

.paged-counter {
  position: fixed; bottom: 1.25rem; left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.75); color: #fff;
  padding: 0.4rem 0.9rem; border-radius: 999px;
  font-size: 0.8125rem; font-weight: 600;
  z-index: 61; pointer-events: none;
  border: 1px solid rgba(255,255,255,0.15);
}
.paged-slice {
  opacity: 0.7;
  font-weight: 500;
  margin-left: 0.35em;
}
.paged-end[hidden] { display: none; }
.paged-end {
  position: fixed; bottom: 4rem; left: 50%;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 0.75rem;
  background: rgba(12,12,16,0.9); color: #fff;
  padding: 0.6rem 1rem; border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.15);
  z-index: 62; white-space: nowrap;
  backdrop-filter: blur(6px);
}
@media (prefers-reduced-motion: no-preference) {
  .paged-end { animation: pg-end-in .35s cubic-bezier(.22,.61,.36,1); }
}
@keyframes pg-end-in { from { opacity: 0; transform: translate(-50%, 12px); } }
.paged-end-text { font-size: 0.8125rem; color: rgba(255,255,255,0.7); }
.paged-end-next {
  color: var(--color-ghost-accent, #f97316);
  font-size: 0.875rem; font-weight: 700; text-decoration: none;
}
.reader-paged .chapter-end-box { display: none; }

/* Scroll-mode entrance: pages rise slightly as they first appear */
@media (prefers-reduced-motion: no-preference) {
  body:not(.reader-paged) .reader .reader-page.seen { animation: pg-reveal .45s ease backwards; }
}
@keyframes pg-reveal { from { opacity: 0; transform: translateY(14px); } }

/* ---------- Novel reader ---------- */
.novel-body {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.125rem;
  line-height: 1.85;
  color: var(--color-ghost-text);
}
.novel-body.novel-wide { max-width: 62rem; }
.novel-body:not(.novel-serif) { font-family: var(--font-sans, system-ui, sans-serif); line-height: 1.75; }
.novel-body p { margin: 0 0 1.15em; }
.novel-body h1, .novel-body h2, .novel-body h3,
.novel-body h4, .novel-body h5, .novel-body h6 {
  color: var(--color-ghost-text-strong);
  margin: 1.6em 0 0.8em;
  line-height: 1.35;
}
.novel-body blockquote {
  border-left: 3px solid var(--color-ghost-accent);
  margin: 1.4em 0; padding: 0.4em 1em;
  color: var(--color-ghost-text-muted);
}
.novel-body hr { border: 0; border-top: 1px solid var(--color-ghost-border); margin: 2em 0; }
.novel-body ul, .novel-body ol { padding-left: 1.5em; margin: 0 0 1.15em; }
.novel-body a { color: var(--color-ghost-accent); }
.novel-body mark { background: color-mix(in srgb, var(--color-ghost-accent) 30%, transparent); color: inherit; padding: 0 .15em; border-radius: 3px; }

/* Light mode contrast for novel body */
body.reader-light .novel-body { color: #1f2430; }
body.reader-light .novel-body h1, body.reader-light .novel-body h2,
body.reader-light .novel-body h3 { color: #10131a; }