/* =========================================================
   BOUND IN INK — PREVIEW READER
   ========================================================= */

:root {
  --reader-bg: #fffdf8;
  --reader-surface: #fffdf8;
  --reader-text: #26221f;
  --reader-muted: #756d66;
  --reader-border: rgba(38, 34, 31, 0.13);

  --reader-accent: #7a2531;
  --reader-accent-hover: #5f1c26;

  --reader-font-size: 18px;
  --reader-line-height: 1.7;

  --reader-page-width: 720px;
}


/* =========================================================
   DARK MODE VARIABLES
   ========================================================= */

body.reader-dark {
  --reader-bg: #242424;
  --reader-surface: #242424;
  --reader-text: #ece8e2;
  --reader-muted: #aaa39b;
  --reader-border: rgba(255, 255, 255, 0.12);
}


/* =========================================================
   RESET
   ========================================================= */

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

body.preview-reader-page {
  overflow: hidden;

  background: var(--reader-bg);
  color: var(--reader-text);

  font-family: Georgia, "Times New Roman", serif;

  -webkit-font-smoothing: antialiased;

  transition:
    background 180ms ease,
    color 180ms ease;
}


/* =========================================================
   HIDDEN READER ELEMENTS

   IMPORTANT:
   Elements controlled by JavaScript with the HTML hidden
   attribute must be completely removed from layout.
   ========================================================= */

.reader-status[hidden],
.reader-stage[hidden],
.preview-complete[hidden],
.reader-menu[hidden] {
  display: none !important;
}


/* =========================================================
   MAIN READER
   ========================================================= */

.preview-reader {
  position: relative;

  width: 100%;
  height: 100dvh;
  min-height: 0;

  display: grid;

  grid-template-rows: minmax(0, 1fr);

  overflow: hidden;

  background: var(--reader-bg);
}


/* =========================================================
   HEADER
   ========================================================= */

.reader-header {
  position: relative;
  z-index: 30;

  width: 100%;
  min-height: 54px;

  display: grid;

  grid-template-columns:
    48px
    minmax(0, 1fr)
    48px;

  align-items: center;

  gap: 8px;

  padding:
    10px
    20px
    6px;

  background: var(--reader-surface);

  border-bottom: 0;
}


/* =========================================================
   HEADER BUTTONS
   ========================================================= */

.reader-header-button {
  width: 42px;
  height: 42px;

  display: flex;
  align-items: center;
  justify-content: center;

  padding: 0;

  border: 0;
  border-radius: 50%;

  background: transparent;
  color: var(--reader-text);

  cursor: pointer;

  transition:
    background 150ms ease,
    transform 150ms ease;
}

.reader-header-button:hover {
  background: rgba(127, 127, 127, 0.12);
}

.reader-header-button:active {
  transform: scale(0.94);
}


/* =========================================================
   CLOSE BUTTON
   ========================================================= */

.reader-close {
  font-family: Arial, Helvetica, sans-serif;

  font-size: 31px;
  font-weight: 300;

  line-height: 1;
}


/* =========================================================
   BOOK TITLE
   ========================================================= */

.reader-book-info {
  min-width: 0;

  text-align: center;
}

.reader-book-title {
  margin: 0;

  overflow: hidden;

  white-space: nowrap;
  text-overflow: ellipsis;

  font-family: Arial, Helvetica, sans-serif;

  font-size: 13px;
  font-weight: 700;

  letter-spacing: 0.055em;

  text-transform: uppercase;
}

.reader-chapter-title {
  position: absolute;

  width: 1px;
  height: 1px;

  margin: -1px;
  padding: 0;

  overflow: hidden;

  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);

  white-space: nowrap;

  border: 0;
}


/* =========================================================
   HAMBURGER
   ========================================================= */

.reader-menu-button {
  flex-direction: column;

  gap: 4px;
}

.reader-menu-button span {
  display: block;

  width: 18px;
  height: 2px;

  background: currentColor;

  border-radius: 999px;
}


/* =========================================================
   READER MENU
   ========================================================= */

.reader-menu {
  position: absolute;

  z-index: 50;

  top: 62px;
  right: 18px;

  width: min(280px, calc(100vw - 28px));

  padding: 18px;

  background: var(--reader-surface);

  color: var(--reader-text);

  border: 1px solid var(--reader-border);

  border-radius: 12px;

  box-shadow:
    0 14px 38px rgba(0, 0, 0, 0.16);
}

.reader-menu-section + .reader-menu-section {
  margin-top: 18px;

  padding-top: 18px;

  border-top:
    1px solid var(--reader-border);
}

.reader-menu-label {
  margin: 0 0 10px;

  color: var(--reader-muted);

  font-family: Arial, Helvetica, sans-serif;

  font-size: 11px;
  font-weight: 700;

  letter-spacing: 0.08em;

  text-transform: uppercase;
}


/* =========================================================
   THEME OPTIONS
   ========================================================= */

.reader-theme-options {
  display: grid;

  grid-template-columns:
    repeat(2, minmax(0, 1fr));

  gap: 8px;
}

.reader-theme-button {
  min-height: 42px;

  padding: 8px 12px;

  border:
    1px solid var(--reader-border);

  border-radius: 8px;

  background: transparent;

  color: var(--reader-text);

  cursor: pointer;

  font-family: Arial, Helvetica, sans-serif;

  font-size: 13px;
  font-weight: 700;
}

.reader-theme-button.is-active {
  border-color: var(--reader-accent);

  color: var(--reader-accent);
}


/* =========================================================
   FONT CONTROLS
   ========================================================= */

.reader-font-controls {
  display: flex;

  gap: 8px;
}

.reader-font-button {
  flex: 1;

  min-height: 42px;

  border:
    1px solid var(--reader-border);

  border-radius: 8px;

  background: transparent;

  color: var(--reader-text);

  cursor: pointer;

  font-family: Georgia, "Times New Roman", serif;

  font-size: 15px;
}

.reader-font-large {
  font-size: 21px;
}


/* =========================================================
   LOADING / ERROR
   ========================================================= */

.reader-status {
  grid-row: 1;

  display: flex;

  align-items: center;
  justify-content: center;

  min-height: 0;

  padding: 30px;

  text-align: center;

  color: var(--reader-muted);
}

.reader-status p {
  margin: 0;

  font-size: 17px;

  line-height: 1.6;
}


/* =========================================================
   READER STAGE
   ========================================================= */

.reader-stage {
  grid-row: 1;

  min-width: 0;
  min-height: 0;

  width: 100%;

  display: flex;

  align-items: center;
  justify-content: center;

  padding:
    clamp(18px, 3vh, 30px)
    clamp(18px, 4vw, 56px)
    clamp(18px, 3vh, 30px);

  overflow: hidden;
}


/* =========================================================
   ACTUAL EBOOK PAGE
   ========================================================= */

.reader-page {
  position: relative;

  width: min(100%, var(--reader-page-width));

  height: min(900px, calc(100dvh - 48px));
  min-height: 0;

  overflow: hidden;

  display: grid;

  grid-template-rows:
    auto
    minmax(0, 1fr)
    auto;

  background: var(--reader-surface);

  color: var(--reader-text);

  border: 0;

  border-radius: 0;

  box-shadow: none;

  outline: none;

  transition:
    background 180ms ease,
    color 180ms ease;
}

.reader-page:focus-visible {
  outline:
    2px solid var(--reader-accent);

  outline-offset: 2px;
}


/* =========================================================
   MANUSCRIPT
   ========================================================= */

.reader-page-content {
  width: 100%;
  height: 100%;
  min-height: 0;

  padding:
    clamp(24px, 4vh, 42px)
    clamp(44px, 7vw, 76px)
    clamp(18px, 3vh, 30px);

  overflow: hidden;

  color: inherit;

  font-size: var(--reader-font-size);

  line-height: var(--reader-line-height);

  overflow-wrap: break-word;

  word-break: normal;
}

.reader-page-content p {
  margin:
    0
    0
    1em;
}

.reader-page-content p + p {
  text-indent: 1.25em;
}

.reader-page-content h1,
.reader-page-content h2,
.reader-page-content h3 {
  margin:
    0
    0
    1.35em;

  font-family:
    Georgia,
    "Times New Roman",
    serif;

  line-height: 1.25;

  text-align: center;
}

.reader-page-content h1 {
  font-size: 1.55em;
}

.reader-page-content h2 {
  font-size: 1.35em;
}

.reader-page-content h3 {
  font-size: 1.15em;
}

.reader-page-content em,
.reader-page-content i {
  font-style: italic;
}

.reader-page-content strong,
.reader-page-content b {
  font-weight: 700;
}

.reader-page-content img {
  display: block;

  max-width: 100%;
  max-height: 100%;

  height: auto;

  margin:
    1em
    auto;
}


/* =========================================================
   BOTTOM PAGE NAVIGATION
   ========================================================= */

.reader-navigation {
  width: 100%;

  display: grid;

  grid-template-columns:
    48px
    minmax(0, 1fr)
    48px;

  align-items: center;

  gap: 14px;

  padding:
    8px
    clamp(24px, 5vw, 44px)
    14px;

  border-top: 0;
}


/* =========================================================
   PAGE ARROWS
   ========================================================= */

.reader-nav-button {
  width: 44px;
  height: 44px;

  display: flex;

  align-items: center;
  justify-content: center;

  padding: 0;

  border: 0;
  border-radius: 50%;

  background: transparent;

  color: var(--reader-text);

  cursor: pointer;

  font-family: Arial, Helvetica, sans-serif;

  font-size: 34px;
  font-weight: 300;

  line-height: 1;

  transition:
    background 150ms ease,
    opacity 150ms ease,
    transform 150ms ease;
}

.reader-nav-button:hover {
  background:
    rgba(127, 127, 127, 0.12);
}

.reader-nav-button:active {
  transform: scale(0.93);
}

.reader-nav-button:disabled {
  opacity: 0.25;

  cursor: default;
}


/* =========================================================
   PROGRESS
   ========================================================= */

.reader-progress {
  width: 100%;

  max-width: 420px;

  margin: 0 auto;
}

.reader-page-number {
  margin:
    0
    0
    5px;

  text-align: center;

  color: var(--reader-muted);

  font-family:
    Arial,
    Helvetica,
    sans-serif;

  font-size: 11px;
}

.reader-progress-track {
  width: 100%;
  height: 2px;

  overflow: hidden;

  background:
    var(--reader-border);

  border-radius: 999px;
}

.reader-progress-fill {
  width: 0%;
  height: 100%;

  background:
    var(--reader-accent);

  border-radius: inherit;

  transition:
    width 180ms ease;
}


/* =========================================================
   END OF PREVIEW
   ========================================================= */

.preview-complete {
  grid-row: 1;

  min-height: 0;

  display: flex;

  align-items: center;
  justify-content: center;

  padding: 30px 20px;

  overflow-y: auto;
}

.preview-complete-content {
  width: min(100%, 520px);

  padding:
    clamp(34px, 7vw, 56px);

  background:
    var(--reader-surface);

  color:
    var(--reader-text);

  border:
    1px solid var(--reader-border);

  border-radius: 10px;

  text-align: center;
}

.preview-complete-eyebrow {
  margin:
    0
    0
    10px;

  color:
    var(--reader-accent);

  font-family:
    Arial,
    Helvetica,
    sans-serif;

  font-size: 11px;
  font-weight: 700;

  letter-spacing: 0.16em;

  text-transform: uppercase;
}

.preview-complete-content h2 {
  margin:
    0
    0
    14px;

  font-size:
    clamp(26px, 5vw, 36px);

  line-height: 1.2;
}

.preview-complete-content > p:not(.preview-complete-eyebrow) {
  margin: 0;

  color:
    var(--reader-muted);

  line-height: 1.6;
}


/* =========================================================
   END SCREEN ACTIONS
   ========================================================= */

.preview-complete-actions {
  display: flex;

  flex-direction: column;

  gap: 10px;

  margin-top: 28px;
}

.preview-action {
  width: 100%;
  min-height: 48px;

  display: flex;

  align-items: center;
  justify-content: center;

  padding: 12px 20px;

  border:
    1px solid var(--reader-accent);

  border-radius: 6px;

  background: transparent;

  color:
    var(--reader-accent);

  text-decoration: none;

  cursor: pointer;

  font-family:
    Arial,
    Helvetica,
    sans-serif;

  font-size: 14px;
  font-weight: 700;
}

.preview-buy {
  background:
    var(--reader-accent);

  color: #ffffff;
}

.preview-buy:hover {
  background:
    var(--reader-accent-hover);
}

.preview-book-details:hover,
.preview-return:hover {
  background:
    rgba(122, 37, 49, 0.07);
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 700px) {

  :root {
    --reader-font-size: 17px;
    --reader-line-height: 1.6;
  }


  .preview-reader {
    width: 100%;
    height: 100dvh;
    min-height: 0;
  }


  .reader-header {
    min-height: 52px;

    grid-template-columns:
      44px
      minmax(0, 1fr)
      44px;

    padding:
      max(6px, env(safe-area-inset-top))
      max(8px, env(safe-area-inset-right))
      4px
      max(8px, env(safe-area-inset-left));
  }


  .reader-book-title {
    font-size: 12px;
  }


  .reader-stage {
    width: 100%;
    height: 100%;
    min-height: 0;

    padding: 0;

    align-items: stretch;
    justify-content: stretch;
  }


  .reader-page {
    width: 100%;
    height: 100%;
    min-height: 0;
    max-height: none;

    grid-template-rows:
      auto
      minmax(0, 1fr)
      auto;

    border: 0;
    border-radius: 0;
    box-shadow: none;
  }


  .reader-page-content {
    width: 100%;
    height: 100%;
    min-height: 0;

    padding:
      18px
      max(22px, env(safe-area-inset-right))
      8px
      max(22px, env(safe-area-inset-left));

    overflow: hidden;

    font-size: var(--reader-font-size);
    line-height: var(--reader-line-height);
  }


  .reader-page-content p {
    margin:
      0
      0
      0.8em;
  }


  .reader-page-content p + p {
    text-indent: 1.25em;
  }


  .reader-page-content h1,
  .reader-page-content h2,
  .reader-page-content h3 {
    margin:
      0
      0
      0.9em;
  }


  .reader-navigation {
    width: 100%;

    grid-template-columns:
      48px
      minmax(0, 1fr)
      48px;

    padding:
      4px
      max(8px, env(safe-area-inset-right))
      max(6px, env(safe-area-inset-bottom))
      max(8px, env(safe-area-inset-left));
  }


  .reader-nav-button {
    width: 42px;
    height: 42px;
  }


  .reader-page-number {
    margin:
      0
      0
      3px;

    font-size: 10px;
  }


  .reader-menu {
    top:
      calc(56px + env(safe-area-inset-top));

    right:
      max(8px, env(safe-area-inset-right));

    width:
      min(270px, calc(100vw - 16px));
  }

}


/* =========================================================
   NARROW PHONES
   ========================================================= */

@media (max-width: 390px) {

  :root {
    --reader-font-size: 16px;
  }


  .reader-page-content {
    padding-left:
      max(18px, env(safe-area-inset-left));

    padding-right:
      max(18px, env(safe-area-inset-right));
  }


  .reader-book-title {
    font-size: 11px;

    letter-spacing: 0.035em;
  }

}


/* =========================================================
   SHORT SCREENS
   ========================================================= */

@media (max-height: 620px) {

  .reader-header {
    min-height: 48px;

    padding-top:
      max(4px, env(safe-area-inset-top));

    padding-bottom: 4px;
  }


  .reader-page-content {
    padding-top: 20px;
    padding-bottom: 18px;
  }


  .reader-nav-button {
    width: 38px;
    height: 38px;
  }

}


/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;

    transition-duration:
      0.01ms !important;

    animation-duration:
      0.01ms !important;
  }

}