:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --link: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
    --link: #60a5fa;
  }
}
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 860px; margin: 0 auto; padding: 24px; }
header { padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.header-content { display: flex; justify-content: space-between; align-items: flex-start; }
.header-left { flex: 1; }
.header-right { margin-left: 20px; }
header .title { font-size: 20px; font-weight: 700; margin: 0; }
header .meta { color: var(--muted); font-size: 14px; }
.subscribe-link { 
  display: inline-block; 
  padding: 8px 16px; 
  background: var(--link); 
  color: white; 
  text-decoration: none; 
  border-radius: 6px; 
  font-size: 14px; 
  font-weight: 500;
  transition: background-color 0.2s;
}
.subscribe-link:hover { 
  background: #1d4ed8; 
  text-decoration: none; 
}

@media (max-width: 640px) {
  .header-right { 
    display: none; 
  }
}

.card { border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: rgba(127,127,127,0.03); margin-top: 20px; }
.card h2 { margin: 0; padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 16px; }
.card .content { padding: 12px; }

.viewer { background: #000; outline: none; }
.viewer:focus-visible { box-shadow: 0 0 0 2px var(--link); }
/* Page aspect ratio: set --slide-ratio on .viewer (default US Letter landscape, 11 x 8.5 in) */
.slide-wrap { position: relative; width: 100%; padding-top: var(--slide-ratio, 77.27%); background: #000; cursor: pointer; user-select: none; -webkit-user-select: none; touch-action: pan-y; }
.slide-wrap canvas { position: absolute; inset: 0; margin: auto; display: block; }
.slide-status { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 16px; color: #9ca3af; font-size: 14px; text-align: center; }
.slide-status[hidden] { display: none; }
.slide-status a { color: #93c5fd; }
.slide-nav { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; padding: 8px; background: #111; color: #e5e7eb; font-size: 14px; }
.slide-nav .nav-group { grid-column: 2; display: flex; align-items: center; gap: 12px; }
.slide-nav .fullscreen-btn { position: static; justify-self: end; white-space: nowrap; background: rgba(255,255,255,0.08); }
.slide-nav .fullscreen-btn:hover { background: rgba(255,255,255,0.18); }
@media (max-width: 480px) {
  .slide-nav { grid-template-columns: 1fr auto; }
  .slide-nav .nav-group { grid-column: 1; gap: 6px; }
  .slide-count { min-width: 56px; }
}
.nav-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: 6px; background: rgba(255,255,255,0.08); color: inherit; cursor: pointer; transition: background-color 0.2s; }
.nav-btn:hover:not(:disabled) { background: rgba(255,255,255,0.18); }
.nav-btn:disabled { opacity: 0.35; cursor: default; }
.slide-count { min-width: 64px; text-align: center; font-variant-numeric: tabular-nums; }
.viewer:fullscreen { display: flex; flex-direction: column; }
.viewer:fullscreen .slide-wrap { flex: 1; padding-top: 0; }
.viewer:-webkit-full-screen { display: flex; flex-direction: column; width: 100%; height: 100%; }
.viewer:-webkit-full-screen .slide-wrap { flex: 1; padding-top: 0; }
.fullscreen-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  z-index: 10;
  transition: background-color 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
}
.fullscreen-btn:hover {
  background: rgba(0, 0, 0, 0.9);
}
.fullscreen-btn svg {
  display: block;
  flex-shrink: 0;
}

ul.links { list-style: none; padding: 0; margin: 8px 0 0; }
ul.links li { padding: 8px 0; border-bottom: 1px dashed var(--border); }
ul.links li:last-child { border-bottom: 0; }
.desc { color: var(--muted); font-size: 14px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.desc-text { flex: 1; }
.date { color: var(--muted); font-size: 12px; font-weight: 500; flex-shrink: 0; }

.bio { display: grid; grid-template-columns: 90px 1fr; gap: 14px; align-items: start; }
.avatar { width: 90px; height: 90px; border-radius: 50%; background: var(--border); overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.name { font-weight: 700; }
.small { font-size: 14px; color: var(--muted); }

footer { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }

.editions { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 12px 0; }
.editions a { padding: 5px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 14px; white-space: nowrap; }
.editions a:hover { color: var(--text); text-decoration: none; border-color: var(--muted); }
.editions a[aria-current="page"] { background: var(--link); border-color: var(--link); color: #fff; }
.edition-note { margin: 0 0 10px; color: var(--muted); font-size: 14px; }
.editions a { position: relative; }
.new-dot { position: absolute; top: -3px; right: -3px; width: 10px; height: 10px; border-radius: 50%; background: #ef4444; box-shadow: 0 0 0 2px var(--bg); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }