:root {
  --ink: #f6f0df;
  --muted: #bfc8bb;
  --panel: rgba(15, 24, 18, 0.88);
  --panel-border: rgba(255, 255, 255, 0.12);
  --accent: #e3a856;
  --accent-soft: #f0cd8a;
  --stage: #152019;
  --reader-background: #152019;
  --flip-duration: 860ms;
  --page-radius: 8px;
  --ease-page: cubic-bezier(.2, .72, .22, 1);
  --paywall-bg: #ffffff;
  --paywall-title: #111827;
  --paywall-text: #5b6472;
  --paywall-price: #111827;
  --paywall-badge: #8a5b20;
  --paywall-close: #111827;
  --paywall-border: #d8dee8;
  --paywall-overlay: rgba(5, 8, 11, .78);
  --paywall-width: 440px;
  --paywall-radius: 14px;
  --paywall-title-size: 32px;
  --paywall-text-size: 15px;
  --paywall-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --stripe-bg: #635bff;
  --stripe-text: #ffffff;
  --paypal-bg: #ffc439;
  --paypal-text: #172c55;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--reader-background);
  background-image:
    radial-gradient(circle at 12% 10%, rgba(166, 94, 52, .22), transparent 32rem),
    radial-gradient(circle at 86% 18%, rgba(71, 108, 89, .28), transparent 34rem),
    linear-gradient(145deg, rgba(0,0,0,.62) 0%, rgba(0,0,0,.08) 44%, rgba(0,0,0,.68) 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}


.reader.is-header-hidden .reader-header,
.reader.is-hint-hidden .reader-hint,
.reader.is-thumbs-hidden #thumbsButton,
.reader.is-fullscreen-hidden #fullscreenButton,
.reader.is-edge-nav-hidden .edge-control {
  display: none !important;
}

.reader.is-header-hidden {
  padding-top: 14px;
}

.reader.is-edge-nav-hidden .book-stage {
  padding-inline: clamp(10px, 2vw, 24px);
}

button { font: inherit; }
button, img { -webkit-tap-highlight-color: transparent; }

.reader {
  width: min(1480px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 22px clamp(16px, 3vw, 48px) max(18px, env(safe-area-inset-bottom));
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 14px;
}

.reader-header,
.reader-controls {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.book-meta h1,
.drawer-header h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: .08em;
}

.book-meta h1 { font-size: clamp(1.25rem, 2.6vw, 2.2rem); }
.book-meta p { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }
.eyebrow { margin-bottom: 3px; color: var(--accent-soft); font-size: .67rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }

.header-actions { display: flex; gap: 8px; }
.icon-button,
.control-button,
.edge-control {
  border: 1px solid var(--panel-border);
  color: var(--ink);
  background: rgba(8, 14, 10, .68);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, opacity .2s ease;
}

.icon-button:hover,
.control-button:hover,
.edge-control:hover { background: rgba(37, 54, 42, .9); border-color: rgba(240, 205, 138, .48); }
button:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 3px; }
button:disabled { opacity: .34; cursor: not-allowed; transform: none !important; }

.icon-button {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
}
.icon-button svg,
.control-button svg,
.edge-control svg { width: 20px; height: 20px; fill: currentColor; }
.collapse-icon { display: none; }
:fullscreen .expand-icon { display: none; }
:fullscreen .collapse-icon { display: block; }

.book-stage {
  position: relative;
  min-height: 0;
  display: grid;
  place-items: center;
  padding: clamp(10px, 2vw, 24px) clamp(46px, 5vw, 72px);
  overflow: hidden;
  isolation: isolate;
}

.book-stage::before {
  content: "";
  position: absolute;
  inset: 6% 7%;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 32px;
  background:
    linear-gradient(rgba(255,255,255,.018), rgba(255,255,255,0)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.018) 0 1px, transparent 1px 80px);
  box-shadow: inset 0 0 80px rgba(0,0,0,.24);
  z-index: -2;
}

.ambient-glow {
  position: absolute;
  width: 34vw;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .17;
  z-index: -3;
  pointer-events: none;
}
.glow-one { left: -10%; top: 2%; background: #c36b3c; }
.glow-two { right: -8%; bottom: 0; background: #5b8e72; }

.book {
  --book-width: min(1120px, calc(100vw - 190px), calc((100vh - 215px) * 1.9714));
  position: relative;
  width: max(560px, var(--book-width));
  aspect-ratio: 1242 / 630;
  perspective: 3200px;
  filter: drop-shadow(0 28px 32px rgba(0,0,0,.42));
  transform: translateZ(0);
  user-select: none;
  touch-action: pan-y;
}

.page-panel,
.flip-sheet,
.sheet-face {
  position: absolute;
  top: 0;
  height: 100%;
}

.page-panel {
  width: 50%;
  overflow: hidden;
  background: #f6f1e7;
}

.page-panel img,
.sheet-face img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: fill;
  pointer-events: none;
  user-select: none;
}

.left-panel {
  left: 0;
  border-radius: var(--page-radius) 1px 1px var(--page-radius);
  box-shadow: inset -12px 0 24px -22px rgba(0,0,0,.9);
}
.right-panel {
  right: 0;
  border-radius: 1px var(--page-radius) var(--page-radius) 1px;
  box-shadow: inset 12px 0 24px -22px rgba(0,0,0,.9);
}
.mobile-panel { display: none; }

.page-blank {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 50% 35%, rgba(255,255,255,.88), rgba(241,235,218,.95) 64%),
    #f4eedf;
}

.page-locked-preview {
  width: 100%;
  height: 100%;
  padding: 34px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #26322c;
  background:
    linear-gradient(135deg, rgba(255,255,255,.94), rgba(237,233,220,.98)),
    #f4eedf;
  text-align: center;
  cursor: pointer;
}
.page-locked-preview::before {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(38, 50, 44, .12);
  border-radius: 18px;
  pointer-events: none;
}
.locked-page-icon {
  width: 50px;
  height: 50px;
  margin-bottom: 8px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(38, 50, 44, .16);
  border-radius: 50%;
  background: rgba(255,255,255,.78);
}
.locked-page-icon svg { width: 24px; height: 24px; fill: currentColor; }
.page-locked-preview small {
  color: #6b746f;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.page-locked-preview strong { font-size: clamp(17px, 2vw, 24px); line-height: 1.2; }
.page-locked-preview > span:last-child { color: #65706a; font-size: 13px; }
.page-locked-preview:focus-visible { outline: 3px solid var(--accent); outline-offset: -6px; }
.is-locked-panel { position: absolute; }

.book-spine {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 16px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(0,0,0,.18), rgba(255,255,255,.08), rgba(0,0,0,.18), transparent);
  pointer-events: none;
  z-index: 14;
  opacity: .72;
}

.flip-sheet {
  display: none;
  width: 50%;
  z-index: 12;
  transform-style: preserve-3d;
  will-change: transform;
}

.sheet-face {
  inset: 0;
  width: 100%;
  overflow: hidden;
  background: #f6f1e7;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.sheet-front { transform: rotateY(0deg); }
.sheet-back { transform: rotateY(180deg); }

.flip-sheet.next-turn {
  display: block;
  left: 50%;
  transform-origin: left center;
  animation: turn-next var(--flip-duration) var(--ease-page) forwards;
}
.flip-sheet.prev-turn {
  display: block;
  left: 0;
  transform-origin: right center;
  animation: turn-prev var(--flip-duration) var(--ease-page) forwards;
}

@keyframes turn-next {
  0% { transform: rotateY(0deg); box-shadow: 3px 8px 18px rgba(0,0,0,.18); }
  45% { box-shadow: -24px 10px 34px rgba(0,0,0,.34); }
  100% { transform: rotateY(-180deg); box-shadow: -3px 8px 18px rgba(0,0,0,.12); }
}
@keyframes turn-prev {
  0% { transform: rotateY(0deg); box-shadow: -3px 8px 18px rgba(0,0,0,.18); }
  45% { box-shadow: 24px 10px 34px rgba(0,0,0,.34); }
  100% { transform: rotateY(180deg); box-shadow: 3px 8px 18px rgba(0,0,0,.12); }
}

.edge-control {
  position: absolute;
  top: 50%;
  z-index: 18;
  width: 46px;
  height: 72px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  transform: translateY(-50%);
}
.edge-control:hover { transform: translateY(-50%) scale(1.04); }
.edge-prev { left: clamp(4px, 1.4vw, 22px); }
.edge-next { right: clamp(4px, 1.4vw, 22px); }

.loading-card {
  position: absolute;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  background: rgba(7, 13, 9, .92);
  box-shadow: 0 20px 50px rgba(0,0,0,.4);
  transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
}
.loading-card.is-hidden { opacity: 0; visibility: hidden; transform: translateY(8px); }
.loader-mark {
  width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid rgba(240,205,138,.5); color: var(--accent-soft); font: 700 1.2rem Georgia, serif;
  animation: pulse 1.2s ease-in-out infinite;
}
.loading-card strong, .loading-card span { display: block; }
.loading-card span { margin-top: 3px; color: var(--muted); font-size: .8rem; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(227,168,86,.08); } }

.reader-controls {
  width: min(780px, 100%);
  margin: 0 auto;
  padding: 10px;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(0,0,0,.2);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.control-button {
  min-width: 126px;
  height: 44px;
  padding: 0 15px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 750;
}
.control-button:hover { transform: translateY(-1px); }

.page-status { width: min(300px, 42vw); text-align: center; color: var(--muted); font-size: .82rem; font-weight: 700; }
.progress-track { height: 3px; margin-top: 8px; overflow: hidden; border-radius: 999px; background: rgba(255,255,255,.1); }
.progress-track span { display: block; width: 3%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--accent-soft)); transition: width .35s ease; }
.reader-hint { margin: -4px 0 0; text-align: center; color: rgba(191,200,187,.7); font-size: .72rem; }

.thumbnail-drawer {
  position: fixed;
  inset: 0;
  z-index: 100;
  visibility: hidden;
  pointer-events: none;
}
.thumbnail-drawer.is-open { visibility: visible; pointer-events: auto; }
.drawer-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.65); opacity: 0; transition: opacity .28s ease; }
.thumbnail-drawer.is-open .drawer-backdrop { opacity: 1; }
.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(520px, 94vw);
  height: 100%;
  padding: 22px 20px max(22px, env(safe-area-inset-bottom));
  overflow: auto;
  border-left: 1px solid var(--panel-border);
  background: #111b15;
  transform: translateX(100%);
  transition: transform .32s var(--ease-page);
  box-shadow: -30px 0 70px rgba(0,0,0,.36);
}
.thumbnail-drawer.is-open .drawer-panel { transform: translateX(0); }
.drawer-header { position: sticky; top: -22px; z-index: 2; display: flex; justify-content: space-between; align-items: center; padding: 22px 0 16px; background: linear-gradient(#111b15 80%, transparent); }
.drawer-header h2 { font-size: 1.45rem; }
.thumbnail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.thumbnail-item {
  position: relative;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  background: #ece5d4;
  cursor: pointer;
  aspect-ratio: 621 / 630;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.thumbnail-item:hover { transform: translateY(-3px); border-color: rgba(240,205,138,.55); }
.thumbnail-item.is-active { border-color: var(--accent-soft); box-shadow: 0 0 0 2px rgba(227,168,86,.28); }
.thumbnail-item img { width: 100%; height: 100%; display: block; object-fit: cover; }
.thumbnail-item span {
  position: absolute;
  right: 6px;
  bottom: 6px;
  min-width: 25px;
  height: 25px;
  padding: 0 6px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #fff;
  background: rgba(5,9,7,.76);
  font-size: .7rem;
  font-weight: 800;
}

body.drawer-open { overflow: hidden; }

@media (max-width: 980px) {
  .book { --book-width: min(calc(100vw - 130px), calc((100vh - 225px) * 1.9714)); }
  .reader-hint { display: none; }
}

@media (max-width: 780px) {
  .reader { min-height: 100svh; padding: 14px 12px max(12px, env(safe-area-inset-bottom)); gap: 10px; }
  .book-meta p { font-size: .76rem; }
  .book-meta p span { display: none; }
  .book-meta p { max-width: 210px; }
  .icon-button { width: 39px; height: 39px; border-radius: 11px; }

  .book-stage { padding: 8px 34px; }
  .book-stage::before { inset: 2% 2%; border-radius: 22px; }
  .book {
    --mobile-width: min(calc(100vw - 84px), calc((100svh - 238px) * .9857), 680px);
    width: max(250px, var(--mobile-width));
    aspect-ratio: 621 / 630;
  }
  .left-panel, .right-panel, .book-spine { display: none; }
  .mobile-panel { display: block; inset: 0; width: 100%; border-radius: var(--page-radius); box-shadow: inset 0 0 0 1px rgba(0,0,0,.08); }
  .flip-sheet { width: 100%; }
  .flip-sheet.next-turn, .flip-sheet.prev-turn { left: 0; }
  .edge-control { width: 36px; height: 62px; border-radius: 13px; }
  .edge-prev { left: 0; }
  .edge-next { right: 0; }

  .reader-controls { padding: 7px; border-radius: 15px; }
  .control-button { min-width: 48px; width: 48px; padding: 0; }
  .control-button span { display: none; }
  .page-status { width: min(220px, 58vw); font-size: .76rem; }
  .thumbnail-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
}

@media (max-width: 420px) {
  .book-meta h1 { font-size: 1.08rem; }
  .book-meta p { max-width: 180px; }
  .book-stage { padding-inline: 30px; }
  .book { --mobile-width: min(calc(100vw - 72px), calc((100svh - 225px) * .9857)); }
  .edge-control { width: 32px; }
  .thumbnail-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

:fullscreen .reader { width: 100%; height: 100%; min-height: 100%; padding-top: max(18px, env(safe-area-inset-top)); }
:fullscreen .book-stage { min-height: 0; }

/* Payment paywall — compact, neutral, fully configurable */
.paywall-modal {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.paywall-modal.is-open:not([hidden]) { display: flex; }
.paywall-backdrop {
  position: absolute;
  inset: 0;
  background: var(--paywall-overlay);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
.paywall-card {
  position: relative;
  z-index: 1;
  width: min(var(--paywall-width), 100%);
  max-height: calc(100svh - 48px);
  overflow: auto;
  padding: 30px;
  border: 1px solid var(--paywall-border);
  border-radius: var(--paywall-radius);
  background: var(--paywall-bg);
  box-shadow: 0 22px 65px rgba(0, 0, 0, .28);
  color: var(--paywall-title);
  text-align: left;
  font-family: var(--paywall-font);
}
.paywall-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--paywall-close);
  font: 400 24px/1 Arial, sans-serif;
  cursor: pointer;
}
.paywall-close:hover {
  border-color: var(--paywall-border);
  background: rgba(127, 127, 127, .08);
}
.paywall-badge {
  width: fit-content;
  max-width: calc(100% - 48px);
  margin: 0 48px 16px 0;
  padding: 6px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  color: var(--paywall-badge);
  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.paywall-card h2 {
  margin: 0 42px 10px 0;
  color: var(--paywall-title);
  font-family: var(--paywall-font);
  font-size: var(--paywall-title-size);
  font-weight: 750;
  line-height: 1.16;
  letter-spacing: -.025em;
}
.paywall-card p {
  margin: 0;
  color: var(--paywall-text);
  font-size: var(--paywall-text-size);
  line-height: 1.55;
}
.paywall-price {
  margin: 22px 0 18px;
  color: var(--paywall-price);
  font-size: 25px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
}
.payment-button {
  width: 100%;
  min-height: 48px;
  margin: 10px 0 0;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-family: var(--paywall-font);
  font-size: 14px;
  font-weight: 750;
  line-height: 1.25;
  cursor: pointer;
  transition: transform .16s ease, filter .16s ease, box-shadow .16s ease;
}
.payment-button:hover {
  transform: translateY(-1px);
  filter: brightness(.98);
  box-shadow: 0 8px 18px rgba(0, 0, 0, .12);
}
.payment-button:disabled { opacity: .65; cursor: wait; transform: none; }
.stripe-payment { background: var(--stripe-bg); color: var(--stripe-text); }
.paypal-payment { background: var(--paypal-bg); color: var(--paypal-text); }
.payment-error {
  margin: 12px 0 0 !important;
  padding: 10px 12px;
  border-radius: 7px;
  background: #fff3f2;
  color: #b42318 !important;
  font-size: 12px !important;
  line-height: 1.45 !important;
}
.payment-error:empty { display: none; }
.paywall-card small {
  display: block;
  margin-top: 12px;
  color: var(--paywall-text);
  font-size: 11px;
  line-height: 1.5;
  opacity: .82;
}
body.paywall-open { overflow: hidden; }

.thumbnail-item.is-locked { position: relative; }
.locked-thumbnail {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255,255,255,.88), rgba(218,214,202,.96)),
    #ece5d4;
}
.thumbnail-item.is-locked::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    repeating-linear-gradient(135deg, rgba(8,12,10,.035) 0 10px, transparent 10px 20px),
    rgba(8, 12, 10, .12);
}
.thumbnail-item.is-locked span { z-index: 3; }
.thumbnail-item.is-locked::after {
  content: "LOCKED";
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  transform: translate(-50%, -50%);
  padding: 6px 8px;
  border-radius: 999px;
  background: rgba(8, 12, 10, .86);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .1em;
}

@media (max-width: 520px) {
  .paywall-modal { padding: 14px; }
  .paywall-card {
    max-height: calc(100svh - 28px);
    padding: 25px 20px 20px;
  }
  .paywall-card h2 {
    margin-right: 36px;
    font-size: min(var(--paywall-title-size), 30px);
  }
  .paywall-badge { margin-bottom: 14px; }
  .paywall-price { margin-top: 18px; font-size: 23px; }
}