/* Shared reader styles */
:root {
  --color-bg: #0a0a0a;
  --color-bg-warm: #111111;
  --color-accent: #c4a265;
  --color-accent-dim: #8a7245;
  --color-text: #e8e0d4;
  --color-text-muted: #a09888;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Reading progress bar --- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-dim), var(--color-accent));
  z-index: 100;
  transition: width 0.15s ease-out;
  pointer-events: none;
}
.reading-progress.clickable {
  pointer-events: auto;
  cursor: pointer;
}

.reader-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background: var(--color-bg-warm);
  border-bottom: 1px solid rgba(196, 162, 101, 0.1);
  position: sticky;
  top: 0;
  z-index: 10;
}

.back-link {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.back-link:hover { opacity: 1; color: var(--color-text); }
.back-link svg { width: 16px; height: 16px; }

.book-title-header {
  font-size: 1.05rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-indicator-top {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  direction: ltr;
  cursor: pointer;
  transition: color 0.2s;
}
.page-indicator-top:hover {
  color: var(--color-accent);
}

.book-container {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 32px 16px 100px;
}

.book-page {
  max-width: 700px;
  width: 100%;
  background: linear-gradient(135deg, #1a1714 0%, #151210 100%);
  border: 1px solid rgba(196, 162, 101, 0.12);
  border-radius: 4px;
  padding: 48px 40px;
  min-height: 70vh;
  position: relative;
  box-shadow: 0 4px 30px rgba(0,0,0,0.4), inset 0 1px 0 rgba(196, 162, 101, 0.05);
}

.page-content p {
  font-size: 1.2rem;
  line-height: 1.9;
  margin-bottom: 1em;
  text-align: justify;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}
.page-content p:last-child { margin-bottom: 0; }

/* --- Chapter headings with decorative divider --- */
.chapter-heading {
  font-size: 1.6rem;
  color: var(--color-accent);
  text-align: center;
  margin-bottom: 1.5em;
  padding-bottom: 1em;
  font-weight: 700;
  letter-spacing: 0.03em;
  position: relative;
}
.chapter-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-accent-dim) 20%,
    var(--color-accent) 50%,
    var(--color-accent-dim) 80%,
    transparent
  );
}

/* --- Drop cap for first paragraph after chapter heading (LTR only) --- */
html:not([dir="rtl"]) .chapter-heading + p::first-letter {
  float: left;
  font-size: 3.4em;
  line-height: 0.8;
  padding-right: 0.08em;
  padding-top: 0.05em;
  color: var(--color-accent);
  font-weight: 700;
}

.page-number {
  text-align: center;
  color: var(--color-accent-dim);
  font-size: 0.85rem;
  margin-top: 32px;
  letter-spacing: 1px;
  direction: ltr;
}

/* --- Scroll mode pages with decorative dividers --- */
.scroll-page {
  padding-bottom: 3em;
  margin-bottom: 3em;
  border-bottom: none;
  position: relative;
}
.scroll-page::after {
  content: '\00B7  \00B7  \00B7';
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--color-accent-dim);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
  opacity: 0.5;
}
.scroll-page:last-child { margin-bottom: 0; padding-bottom: 1em; }
.scroll-page:last-child::after { display: none; }

.scroll-page-num {
  position: absolute;
  top: -0.6em;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #1a1714 0%, #151210 100%);
  color: var(--color-accent-dim);
  font-size: 0.7rem;
  padding: 0 12px;
  letter-spacing: 1.5px;
  direction: ltr;
  opacity: 0.6;
}

/* --- Controls bar (cleaner, more minimal) --- */
.controls {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  background: linear-gradient(to top, var(--color-bg) 70%, transparent);
  z-index: 10;
}

.controls.scroll-mode .nav-btn:not(.mode-btn):not(.pdf-btn) { display: none; }
.controls.scroll-mode .page-jump { display: none; }

.nav-btn {
  background: rgba(196, 162, 101, 0.08);
  color: var(--color-accent);
  border: 1px solid rgba(196, 162, 101, 0.15);
  padding: 8px 20px;
  border-radius: 3px;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 80px;
}
.nav-btn:hover:not(:disabled) {
  background: rgba(196, 162, 101, 0.18);
  color: var(--color-text);
}
.nav-btn:disabled {
  opacity: 0.25;
  cursor: default;
}

.mode-btn, .pdf-btn {
  min-width: 40px;
  padding: 7px 10px;
  font-size: 1.1rem;
  line-height: 1;
}

.page-jump {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  direction: ltr;
}

.page-jump input {
  width: 48px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(196, 162, 101, 0.15);
  color: var(--color-text);
  padding: 5px 6px;
  border-radius: 3px;
  font-size: 0.85rem;
  text-align: center;
  font-family: inherit;
}
.page-jump input:focus { outline: none; border-color: var(--color-accent); }

/* Swipe hint on mobile */
.swipe-hint {
  position: fixed;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(196, 162, 101, 0.15);
  color: var(--color-accent);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  opacity: 0;
  animation: hintFade 3s ease 1s forwards;
  pointer-events: none;
  z-index: 5;
  white-space: nowrap;
}
@keyframes hintFade {
  0%, 10% { opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { opacity: 0; display: none; }
}

.page-transition {
  animation: pageFade 0.3s ease;
}
@keyframes pageFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Mobile typography and layout --- */
@media (max-width: 600px) {
  .book-page { padding: 24px 18px; min-height: auto; }
  .page-content p {
    font-size: 1.05rem;
    line-height: 1.85;
    -webkit-hyphens: auto;
    hyphens: auto;
    word-break: break-word;
  }
  .chapter-heading { font-size: 1.3rem; }
  html:not([dir="rtl"]) .chapter-heading + p::first-letter {
    font-size: 2.8em;
  }
  .reader-header { padding: 8px 12px; flex-wrap: wrap; gap: 4px; }
  .book-title-header { font-size: 0.9rem; order: -1; width: 100%; text-align: center; }
  .nav-btn { padding: 7px 12px; min-width: 64px; font-size: 0.85rem; }
  .controls { padding: 10px 10px; gap: 6px; }
  .scroll-page { padding-bottom: 2.5em; margin-bottom: 2.5em; }
  .reading-progress { height: 2px; }
}

@media (min-width: 601px) {
  .swipe-hint { display: none; }
}