:root {
  --bg: #0e0f13;
  --bg2: #15171e;
  --card: #1a1d26;
  --line: #2a2e3b;
  --text: #f2f0e8;
  --muted: #a8a496;
  --gold: #d4a94e;
  --gold2: #b8892f;
  --green: #4caf7d;
  --red: #e05c5c;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  line-height: 1.6;
}
a { color: var(--gold); }
.wrap { max-width: 1020px; margin: 0 auto; padding: 0 20px; }

/* ---------- hero / landing ---------- */
.hero {
  padding: 72px 0 56px;
  text-align: center;
  background: radial-gradient(ellipse at 50% -20%, #2b2413 0%, var(--bg) 60%);
}
.kicker {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold2);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 22px;
}
.hero h1 { font-size: clamp(38px, 6vw, 64px); margin: 0 0 10px; line-height: 1.1; }
.hero h1 span { color: var(--gold); }
.hero p.lead { color: var(--muted); font-size: 19px; max-width: 640px; margin: 0 auto 10px; }
.price-tag { margin: 6px 0 30px; }
.price-tag .amount {
  font-size: clamp(40px, 9vw, 56px);
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  text-shadow: 0 2px 18px rgba(212,169,78,.35);
}
.price-tag .note {
  color: var(--muted);
  font-size: 14px;
  margin-top: 8px;
  letter-spacing: .04em;
}
.btn {
  display: inline-block;
  background: linear-gradient(180deg, var(--gold), var(--gold2));
  color: #191407;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  padding: 15px 38px;
  font-size: 17px;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,169,78,.35); }
.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn.small { padding: 9px 22px; font-size: 14px; }
.btn.danger { background: var(--red); color: #fff; }
.btnrow { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.section { padding: 52px 0; }
.section h2 { text-align: center; font-size: 30px; margin: 0 0 8px; }
.section p.sub { text-align: center; color: var(--muted); margin: 0 0 34px; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card h3 { margin: 0 0 10px; color: var(--gold); font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.stepnum {
  display: inline-flex; width: 38px; height: 38px; border-radius: 50%;
  background: var(--gold); color: #191407; font-weight: 800;
  align-items: center; justify-content: center; margin-bottom: 12px;
}
.faq details {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px 20px; margin-bottom: 12px;
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin: 10px 0 0; }
footer { border-top: 1px solid var(--line); padding: 26px 0; text-align: center; color: var(--muted); font-size: 14px; }

/* ---------- auth / app ---------- */
.center {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: radial-gradient(ellipse at 50% 0%, #241f10 0%, var(--bg) 55%);
}
.panel {
  width: 100%; max-width: 420px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 32px;
}
.panel h1 { margin: 0 0 6px; font-size: 26px; }
.panel h1 span { color: var(--gold); }
.panel p.muted { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font-size: 16px;
  background: var(--bg2); border: 1px solid var(--line);
  border-radius: 10px; color: var(--text);
}
.field input:focus { outline: none; border-color: var(--gold); }
.alert {
  border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; font-size: 14px;
  display: none;
}
.alert.show { display: block; }
.alert.error { background: rgba(224,92,92,.12); border: 1px solid var(--red); color: #f3b0b0; }
.alert.warn { background: rgba(212,169,78,.12); border: 1px solid var(--gold); color: #ecd9a8; }
.alert.ok { background: rgba(76,175,125,.12); border: 1px solid var(--green); color: #bfe6cf; }

/* ---------- visor ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  background: rgba(14,15,19,.95); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line); padding: 10px 18px;
}
.topbar .brand { font-weight: 800; }
.topbar .brand span { color: var(--gold); }
.topbar .spacer { flex: 1; }
.topbar .user { color: var(--muted); font-size: 14px; }
.toolbar {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px; flex-wrap: wrap;
}
.tbtn {
  background: var(--card); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 8px 16px; cursor: pointer; font-size: 15px;
}
.tbtn:hover { border-color: var(--gold); }
.pageinfo { color: var(--muted); font-size: 14px; min-width: 90px; text-align: center; }
#viewer {
  display: block;
  padding: 18px 14px 120px;
  user-select: none; -webkit-user-select: none;
}
#viewer canvas {
  max-width: 100%; height: auto;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,.5);
  background: #fff;
}
#pageWrap { position: relative; max-width: 100%; line-height: 0; }
#annLayer { position: absolute; inset: 0; line-height: normal; }
.pdf-link { position: absolute; display: block; }
.pdf-link:hover { outline: 2px solid rgba(120, 180, 255, .55); border-radius: 2px; }

/* ---------- admin ---------- */
.admin-wrap { max-width: 1100px; margin: 0 auto; padding: 26px 20px 60px; }
.admin-wrap h1 span { color: var(--gold); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin: 22px 0; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.stat .n { font-size: 30px; font-weight: 800; color: var(--gold); }
.stat .l { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.badge { display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.active { background: rgba(76,175,125,.15); color: #8fd8ab; }
.badge.locked { background: rgba(224,92,92,.15); color: #f0a3a3; }
.badge.disabled { background: rgba(168,164,150,.15); color: var(--muted); }
.rowbtns { display: flex; gap: 6px; flex-wrap: wrap; }
.mini {
  background: var(--bg2); border: 1px solid var(--line); color: var(--text);
  border-radius: 8px; padding: 5px 12px; font-size: 13px; cursor: pointer;
}
.mini:hover { border-color: var(--gold); }
.mini.red:hover { border-color: var(--red); color: #f0a3a3; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .two { grid-template-columns: 1fr; } }
.mono { font-family: ui-monospace, monospace; font-size: 12px; color: var(--muted); }

/* ================= lector premium ================= */
body.reader { display: flex; flex-direction: column; height: 100dvh; overflow: hidden; }
.reader-bar { flex: 0 0 auto; }
.reader-bar .brand { font-size: 17px; }
.tbtn.icon { padding: 8px 11px; }

.progress-wrap {
  flex: 0 0 auto; display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; background: var(--bg2); border-bottom: 1px solid var(--line);
}
.progress-track { flex: 1; height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--gold2), var(--gold)); border-radius: 999px; transition: width .25s; }
.page-jump { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: 4px 12px; font-size: 13px; cursor: pointer; white-space: nowrap; }
.page-jump:hover { border-color: var(--gold); color: var(--text); }

.reader-viewer {
  flex: 1 1 auto; overflow-y: auto; position: relative;
  display: block;
  padding: 18px 14px 120px;
  user-select: none; -webkit-user-select: none;
  background: radial-gradient(ellipse at 50% 0%, #14161d 0%, var(--bg) 55%);
}
.page {
  position: relative; width: min(100%, 860px);
  margin: 0 auto 18px;
  background: #fff; border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,.5);
  display: block;
  color: #999; min-height: 200px;
}
.page-num {
  position: absolute; bottom: 8px; right: 12px; z-index: 3;
  font-size: 12px; color: #b6b6b6; background: rgba(255,255,255,.85);
  border-radius: 999px; padding: 2px 10px; pointer-events: none;
}
.pageWrap { position: relative; width: 100%; line-height: 0; }
.pageWrap canvas { width: 100%; height: auto; display: block; border-radius: 8px; }
.annLayer { position: absolute; inset: 0; line-height: normal; }

/* drawer */
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 60; }
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: min(360px, 88vw); z-index: 61;
  background: var(--bg2); border-right: 1px solid var(--line);
  transform: translateX(-105%); transition: transform .25s ease;
  display: flex; flex-direction: column;
}
.drawer.open { transform: none; }
.drawer-head { display: flex; align-items: center; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.tabs { display: flex; gap: 6px; flex: 1; }
.tab { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: 7px 14px; cursor: pointer; font-size: 14px; }
.tab.active { border-color: var(--gold); color: var(--gold); }
.goto { display: flex; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.goto input { flex: 1; background: var(--card); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 9px 12px; font-size: 15px; }
.drawer-body { flex: 1; overflow-y: auto; padding: 8px 12px 30px; }
.chap {
  display: flex; gap: 10px; align-items: center; width: 100%; text-align: left;
  background: none; border: none; border-bottom: 1px solid var(--line);
  color: var(--text); padding: 12px 6px; cursor: pointer; font-size: 14.5px;
}
.chap:hover { color: var(--gold); }
.chap em { margin-left: auto; color: var(--muted); font-size: 12px; font-style: normal; white-space: nowrap; }
.chap-n {
  flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; color: var(--gold);
}
.mark-row { display: flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--line); }
.mark-row .grow { flex: 1; border-bottom: none; }
.empty { color: var(--muted); text-align: center; padding: 30px 10px; }

/* buscar */
.search-panel {
  position: fixed; top: 0; left: 0; right: 0; z-index: 61;
  background: var(--bg2); border-bottom: 1px solid var(--line);
  padding: 12px 16px; max-height: 70dvh; display: flex; flex-direction: column;
}
.search-head { display: flex; gap: 8px; }
.search-head input { flex: 1; background: var(--card); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 10px 14px; font-size: 16px; }
.search-status { color: var(--muted); font-size: 13px; padding: 8px 2px; }
.search-results { overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding-bottom: 8px; }
.hit { text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; color: var(--text); }
.hit:hover { border-color: var(--gold); }
.hit b { display: block; font-size: 14.5px; }
.hit em { display: block; color: var(--muted); font-size: 12px; font-style: normal; margin: 2px 0 4px; }
.hit span { display: block; color: var(--muted); font-size: 13px; }

/* botones flotantes */
.fab {
  position: fixed; right: 18px; z-index: 55; width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  cursor: pointer; text-decoration: none; box-shadow: 0 6px 20px rgba(0,0,0,.45);
}
.fab-mark { bottom: 86px; }
.fab-mark.on { color: var(--gold); border-color: var(--gold); }
.fab-wa { bottom: 22px; background: #1f9d55; border-color: #1f9d55; color: #fff; font-size: 24px; }

/* el atributo hidden debe ocultar siempre (las clases con display lo anulaban) */
[hidden] { display: none !important; }

/* tutorial */
.tutorial { position: fixed; inset: 0; z-index: 70; background: rgba(0,0,0,.72); display: flex; align-items: center; justify-content: center; padding: 20px; }
.tutorial-card { background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius); max-width: 380px; width: 100%; padding: 28px 24px; text-align: center; }
.tutorial-card h2 { margin: 14px 0 8px; }
.tutorial-card p { color: var(--muted); margin: 0 0 22px; }
.tut-dots { display: flex; gap: 8px; justify-content: center; }
.tut-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.tut-dots i.on { background: var(--gold); }
.tut-nav { display: flex; gap: 10px; justify-content: center; }

/* aviso de edición */
.update-banner {
  flex: 0 0 auto; display: flex; align-items: center; gap: 12px;
  background: linear-gradient(90deg, #2b2413, #211b0e); border-bottom: 1px solid var(--gold2);
  color: var(--text); padding: 10px 16px; font-size: 14px;
}
.update-banner span { flex: 1; }
.tbtn.small { padding: 6px 12px; font-size: 13px; }
/* modo oscuro del lector */
body.dark .reader-viewer { background: #000; }
body.dark .pageWrap canvas { filter: invert(1) hue-rotate(180deg); }
body.dark .page { background: #111; }
body.dark .page-num { background: rgba(0,0,0,.7); color: #777; }
@media (max-width: 640px) {
  .reader-bar .user { display: none; }
  #btnIndex { font-size: 14px; padding: 8px 10px; }
}