/* ==========================================================================
   THE BOOK OF WISDOM: Flipbook & E-Book Reader Engine
   Shared CSS for Volume 1 & Volume 2
   ========================================================================== */

:root {
  --bg-dark: #0A0A08;
  --bg-surface: #12100E;
  --bg-card: #181613;
  --bg-glass: rgba(18, 16, 14, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);

  --vol-accent: #D4A052;
  --vol-accent-hover: #E2B774;
  --vol-accent-glow: rgba(212, 160, 82, 0.35);
  --vol-gradient: linear-gradient(135deg, #C49A45 0%, #E2B774 50%, #C49A45 100%);
  --vol-border: rgba(212, 160, 82, 0.3);

  --paper-parchment: #F6F1E7;
  --ink-primary: #1C1917;
  --ink-muted: #57534E;
  --text-white: #F8F5EE;
  --text-muted: #A8A29E;
  --text-subtle: #78716C;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-serif: 'Lora', Georgia, serif;
  --font-ui: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Montserrat', monospace;

  --header-height: 56px;
  --dock-height: 58px;
  --z-cover: 100;
  --z-modal: 200;
}

html[data-volume="2"] {
  --vol-accent: #A855F7;
  --vol-accent-hover: #C084FC;
  --vol-accent-glow: rgba(168, 85, 247, 0.35);
  --vol-gradient: linear-gradient(135deg, #A855F7 0%, #C084FC 50%, #DDD6FE 100%);
  --vol-border: rgba(168, 85, 247, 0.35);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-dark);
  color: var(--text-white);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:focus-visible {
  outline: 2px solid var(--vol-accent);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

/* ==========================================================================
   COVER SCREEN (#cover-screen)
   Full-Bleed, Ambient Breathe, Floating Particles, Hero Typography
   ========================================================================== */
.cover-screen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  z-index: var(--z-cover);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  background-color: #050504;
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 600ms cubic-bezier(0.16, 1, 0.3, 1),
              visibility 600ms;
}

.cover-screen.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(1.03);
}

.cover-light {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 36%, var(--vol-accent-glow), transparent 72%);
  pointer-events: none;
}

.cover-ambient-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 50% 30%, var(--vol-accent-glow) 0%, transparent 68%),
    linear-gradient(180deg, rgba(5, 5, 4, 0.5) 0%, transparent 40%, rgba(5, 5, 4, 0.7) 80%, #050504 100%);
  pointer-events: none;
  animation: coverAmbientBreathe 8s ease-in-out infinite alternate;
}

@keyframes coverAmbientBreathe {
  0% { opacity: 0.7; }
  100% { opacity: 1.0; }
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Floating Top Navigation */
.cover-topbar {
  position: relative;
  z-index: 10;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.cover-portal-link {
  padding: 7px 14px;
  font-size: 12.5px;
  opacity: 0.88;
}

.glass-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 200ms ease;
}

.glass-pill:hover {
  background: rgba(30, 26, 22, 0.95);
  border-color: var(--vol-accent);
  color: var(--vol-accent-hover);
  transform: translateY(-1px);
}

/* Center & Bottom Hero Content */
.cover-content {
  position: relative;
  z-index: 10;
  padding: 24px 24px 52px 24px;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.cover-eyebrow {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--vol-accent);
  opacity: 0.92;
}

.cover-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5.5vw, 66px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.03em;
  background: var(--vol-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  word-break: normal;
  overflow-wrap: break-word;
}

.cover-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(14px, 1.8vw, 16px);
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 560px;
  margin-top: 2px;
}

.cover-actions {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
  width: 100%;
}

.btn-primary-enter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  min-width: 240px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: var(--vol-gradient);
  color: #1A1305;
  font-family: var(--font-ui);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: 0 8px 32px var(--vol-accent-glow);
  transition: all 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-cover-toc {
  padding: 15px 24px;
  font-size: 14px;
}

.btn-primary-enter:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px var(--vol-accent-glow);
  filter: brightness(1.06);
}

.btn-primary-enter svg {
  transition: transform 200ms ease;
}

.btn-primary-enter:hover svg {
  transform: translateX(4px);
}

.cover-secondary-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-ghost-restart {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 150ms ease;
}

.btn-ghost-restart:hover {
  color: var(--text-white);
}

/* ==========================================================================
   READER SCREEN (#reader-screen)
   Top Header, Zoom Layer, 3D Flipbook, Bottom Dock
   ========================================================================== */
.reader-screen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--reader-canvas-bg, var(--bg-dark));
  transition: background-color 220ms ease;
}

/* Header */
.reader-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(14, 12, 10, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--vol-border);
  z-index: 60;
  flex-shrink: 0;
  transition: opacity 320ms ease, transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reader-screen.ui-hidden .reader-header {
  opacity: 0;
  transform: translateY(-100%);
  pointer-events: none;
}

.reader-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.btn-back-cover {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 160ms ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-back-cover:hover {
  border-color: var(--vol-accent);
  color: var(--vol-accent);
  background: rgba(255, 255, 255, 0.08);
}

.topic-indicator {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topic-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vol-accent);
}

.topic-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: clamp(140px, 25vw, 340px);
}

.reader-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 11px;
  border-radius: 999px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all 160ms ease;
}

.tool-btn:hover {
  border-color: var(--vol-accent);
  color: var(--vol-accent-hover);
  background: rgba(255, 255, 255, 0.08);
}

.tool-btn.is-active {
  border-color: var(--vol-accent);
  color: var(--vol-accent);
  background: rgba(255, 255, 255, 0.1);
}

.tool-btn-icon-only {
  width: 34px;
  padding: 0;
  justify-content: center;
}

.zoom-btn-group {
  display: inline-flex;
  align-items: center;
  height: 34px;
  border: 1px solid var(--border-glass);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.zoom-btn {
  height: 34px;
  padding: 0 10px;
  background: transparent;
  border: none;
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 140ms ease;
}

.zoom-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--vol-accent);
}

.zoom-reset-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  min-width: 44px;
  border-left: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
}

/* ==========================================================================
   VIEWPORT & ZOOM LAYER
   ========================================================================== */
.viewport-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  background-color: var(--reader-canvas-bg, var(--bg-dark));
  transition: background-color 220ms ease;
}

.zoom-layer {
  position: relative;
  transform-origin: center center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-layer.is-zoomed {
  cursor: grab;
}

.zoom-layer.is-dragging {
  cursor: grabbing;
}

/* Flipbook Stage — expands to 99% fullscreen when UI hides, frames cleanly between header & dock when UI shows */
.flipbook-stage {
  position: relative;
  margin: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
  transform-origin: center center;
  transform: translate3d(0, var(--stage-framed-offset, 0px), 0) scale(var(--stage-framed-scale, 0.88));
  transition: transform 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reader-screen.is-seamless-canvas .flipbook-stage {
  box-shadow: none;
}

.reader-screen.ui-hidden .flipbook-stage {
  transform: translate3d(0, 0, 0) scale(var(--stage-full-scale, 1));
}

.osd-zoom-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  background-color: var(--reader-canvas-bg, var(--bg-dark));
  transition: background-color 220ms ease;
  touch-action: none;
}

.osd-zoom-viewer[hidden] {
  display: block !important;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.tool-btn.is-unlocked {
  border-color: rgba(16, 185, 129, 0.45);
  color: #6EE7B7;
}

#flipbook {
  display: block;
  margin: 0 auto;
}

/* Individual Pages */
.page-content {
  background-color: var(--paper-parchment);
  overflow: hidden;
  position: relative;
}

.page-inner {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--paper-parchment);
}

.page-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  image-rendering: high-quality;
  transition: opacity 200ms ease;
}

.page-skeleton {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #EAE3D4;
  color: #78716C;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  opacity: 1;
  transition: opacity 300ms ease;
  pointer-events: none;
}

.page-img.loaded + .page-skeleton {
  opacity: 0;
}

/* Paper Theme Filters applied to page images */
body[data-theme="sepia"] .page-img {
  filter: sepia(0.28) brightness(0.96);
}

body[data-theme="dark"] .page-img {
  filter: invert(0.88) hue-rotate(180deg) contrast(1.05);
}

body[data-theme="dark"] .page-content,
body[data-theme="dark"] .page-inner {
  background-color: #12100E;
}

body[data-theme="sepia"] .osd-zoom-viewer canvas {
  filter: sepia(0.28) brightness(0.96);
}

body[data-theme="dark"] .osd-zoom-viewer canvas {
  filter: invert(0.88) hue-rotate(180deg) contrast(1.05);
}

/* Floating Zoom Banner */
.mobile-zoom-toggle {
  display: none;
}

.mobile-zoom-toggle em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.zoom-floating-pill {
  position: absolute;
  top: auto;
  bottom: max(14px, env(safe-area-inset-bottom, 14px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  background: rgba(14, 12, 10, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--vol-border);
  padding: 6px 12px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--text-white);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  animation: fadeInUpPill 200ms ease;
  transition: opacity 280ms ease, transform 220ms ease;
  white-space: nowrap;
}

.zoom-floating-pill.is-pill-idle {
  opacity: 0.72;
}

@media (min-width: 768px) {
  .zoom-floating-pill {
    left: auto;
    right: 16px;
    bottom: 14px;
    transform: none;
    padding: 5px 10px;
    gap: 6px;
  }

  .zoom-floating-pill.is-pill-idle {
    opacity: 0.16;
  }

  .zoom-floating-pill:hover,
  .zoom-floating-pill:focus-within {
    opacity: 1;
  }
}

.zoom-floating-pill[hidden],
.reader-screen:not(.ui-hidden) .zoom-floating-pill {
  display: none !important;
}

.pill-nav-btn,
.pill-step-btn {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  transition: background 140ms ease, opacity 140ms ease;
}

.pill-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.pill-zoom-readout {
  font-family: var(--font-mono);
  font-size: 11px;
  min-width: 38px;
  text-align: center;
}

@keyframes fadeInUpPill {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

.zoom-floating-reset {
  background: var(--vol-accent);
  color: #1A1305;
  border: none;
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.zoom-floating-reset.pill-step-btn {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 0;
}

/* ==========================================================================
   READER DOCK (#reader-dock)
   Bottom Navigation & Jump Trigger
   ========================================================================== */
.reader-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--dock-height) + env(safe-area-inset-bottom, 0px));
  padding: 6px 16px calc(6px + env(safe-area-inset-bottom, 0px));
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to top, rgba(10, 9, 8, 0.94) 0%, rgba(14, 12, 10, 0.84) 100%);
  backdrop-filter: blur(18px) saturate(1.15);
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 60;
  flex-shrink: 0;
  transition: opacity 320ms ease, transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reader-screen.ui-hidden .reader-dock {
  opacity: 0;
  transform: translateY(100%);
  pointer-events: none;
}

.dock-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
}

.dock-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--vol-gradient);
  box-shadow: 0 0 8px var(--vol-accent-glow);
  transition: width 200ms ease;
}

.dock-capsule {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: min(440px, 100%);
  padding: 3px 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.11);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.dock-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-white);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: all 160ms ease;
}

.dock-nav-btn:hover:not(:disabled) {
  border-color: var(--vol-accent);
  color: var(--vol-accent);
  background: rgba(255, 255, 255, 0.11);
}

.dock-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.dock-center-pill {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  padding: 3px 12px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid transparent;
  color: inherit;
  cursor: pointer;
  transition: all 180ms ease;
}

.dock-center-pill:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--vol-border);
}

.dock-page-number {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--vol-accent);
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.dock-topic-label {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--text-muted);
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.25;
}

/* ==========================================================================
   MODALS & DRAWERS (TOC, Search, Grid, Jump, Settings)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 200ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-drawer {
  width: 100%;
  max-width: 460px;
  height: 100%;
  position: absolute;
  top: 0;
  right: 0;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  box-shadow: -12px 0 36px rgba(0, 0, 0, 0.5);
  animation: slideDrawer 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDrawer {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.modal-dialog {
  width: 90%;
  max-width: 580px;
  max-height: 85vh;
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  animation: scaleUp 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes scaleUp {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title-wrap {
  display: flex;
  flex-direction: column;
}

.modal-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vol-accent);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-white);
}

.modal-close-btn {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 160ms ease;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--vol-accent);
  color: var(--vol-accent);
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

/* Search Bar in Modals */
.modal-search-box {
  position: relative;
  margin-bottom: 8px;
}

.modal-search-input {
  width: 100%;
  padding: 12px 14px 12px 38px;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 14px;
  outline: none;
  transition: border-color 200ms ease;
}

.modal-search-input:focus {
  border-color: var(--vol-accent);
}

.modal-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* TOC Items */
.toc-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: all 160ms ease;
}

.toc-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-subtle);
  color: var(--vol-accent-hover);
}

.toc-item.is-active {
  background: rgba(212, 160, 82, 0.1);
  border-color: var(--vol-border);
  color: var(--vol-accent);
  font-weight: 600;
}

.toc-item-title {
  flex: 1;
  padding-right: 12px;
}

.toc-item.level-2 .toc-item-title {
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-muted);
}

.toc-item-page {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

.toc-item.is-active .toc-item-page {
  background: var(--vol-accent);
  color: #1A1305;
}

/* Search Results */
.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.search-result-card {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  text-align: left;
  transition: all 160ms ease;
}

.search-result-card:hover {
  border-color: var(--vol-accent);
  background: rgba(255, 255, 255, 0.06);
}

.search-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.search-result-page {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--vol-accent);
}

.search-result-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-white);
}

.search-result-snippet {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
}

.search-match {
  background: rgba(212, 160, 82, 0.35);
  color: #FFF;
  font-weight: 700;
  border-radius: 2px;
  padding: 0 2px;
}

/* Thumbnail Grid */
.grid-modal-dialog {
  max-width: 920px;
  width: 95%;
}

.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 14px;
  padding: 4px;
}

.page-thumb-card {
  display: flex;
  flex-direction: column;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  background: #181613;
  cursor: pointer;
  transition: all 180ms ease;
}

.page-thumb-card:hover {
  transform: translateY(-2px);
  border-color: var(--vol-accent);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-thumb-card.is-active {
  border-color: var(--vol-accent);
  box-shadow: 0 0 0 2px var(--vol-accent);
}

.page-thumb-img-wrap {
  width: 100%;
  aspect-ratio: 1166 / 1650;
  background-color: var(--paper-parchment);
  position: relative;
  overflow: hidden;
}

.page-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-thumb-footer {
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: #141210;
}

.page-thumb-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--vol-accent);
}

.page-thumb-title {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Jump Modal */
.jump-modal-dialog {
  max-width: 420px;
}

.jump-big-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  color: var(--vol-accent);
  line-height: 1;
  margin: 10px 0 2px 0;
}

.jump-topic-preview {
  font-family: var(--font-serif);
  font-size: 14px;
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.jump-slider-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.jump-range-slider {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  accent-color: var(--vol-accent);
  cursor: pointer;
}

.jump-quick-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

.jump-quick-btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 140ms ease;
}

.jump-quick-btn:hover {
  border-color: var(--vol-accent);
  color: var(--vol-accent);
}

.jump-input-row {
  display: flex;
  gap: 8px;
}

.jump-input-num {
  flex: 1;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-family: var(--font-mono);
  font-size: 15px;
  text-align: center;
  outline: none;
}

.jump-btn-submit {
  padding: 10px 24px;
  border-radius: 6px;
  border: none;
  background: var(--vol-gradient);
  color: #1A1305;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: filter 160ms ease;
}

.jump-btn-submit:hover {
  filter: brightness(1.08);
}

/* Settings Modal */
.settings-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-label {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--vol-accent);
}

.settings-options-row {
  display: flex;
  gap: 8px;
}

.settings-opt-btn {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: all 160ms ease;
}

.settings-opt-btn:hover {
  border-color: var(--vol-accent);
}

.settings-opt-btn.is-active {
  background: rgba(212, 160, 82, 0.15);
  border-color: var(--vol-accent);
  color: var(--vol-accent);
  font-weight: 600;
}

.settings-link-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--vol-border);
  background: rgba(212, 160, 82, 0.08);
  color: var(--vol-accent-hover);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  transition: all 160ms ease;
}

.settings-link-btn:hover {
  background: rgba(212, 160, 82, 0.16);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Mobile < 1024px)
   ========================================================================== */
@media (max-width: 1023px) {
  .cover-topbar {
    padding: 12px 14px;
    gap: 8px;
  }

  .cover-topbar .glass-pill {
    padding: 6px 10px;
    font-size: 12px;
  }

  .cover-content {
    padding: 12px 14px 36px 14px;
    max-width: 100vw;
  }

  .cover-eyebrow {
    font-size: 10px;
    letter-spacing: 0.16em;
  }

  .cover-title {
    font-size: clamp(22px, 6.8vw, 28px);
    line-height: 1.15;
    letter-spacing: 0.01em;
    max-width: 100%;
  }

  .cover-quote {
    font-size: 12.5px;
    line-height: 1.5;
    max-width: 94%;
  }

  .btn-primary-enter {
    min-width: 220px;
    padding: 13px 24px;
    font-size: 13.5px;
  }

  .btn-cover-toc {
    padding: 12px 20px;
    font-size: 13px;
  }

  .reader-header {
    padding: 0 10px;
    gap: 6px;
  }

  .reader-header-left {
    gap: 6px;
    flex-shrink: 0;
  }

  .reader-header-right {
    gap: 5px;
    min-width: 0;
  }

  .topic-title {
    max-width: 130px;
    font-size: 14px;
  }

  .tool-btn span {
    display: none;
  }

  .tool-btn {
    width: 34px;
    height: 34px;
    padding: 0;
    justify-content: center;
    flex-shrink: 0;
  }

  .mobile-zoom-toggle {
    display: inline-flex !important;
    width: auto;
    height: 34px;
    padding: 0 9px;
    gap: 4px;
    color: var(--vol-accent);
    border-color: var(--vol-border);
    background: rgba(255, 255, 255, 0.05);
  }

  /* Clean mobile header: hide desktop-only controls to keep header breathable */
  .zoom-btn-group,
  #btn-open-grid,
  #btn-toggle-spread,
  #btn-toggle-fullscreen {
    display: none !important;
  }

  .zoom-floating-pill {
    top: auto;
    bottom: max(14px, env(safe-area-inset-bottom, 14px));
    padding: 5px 8px;
    gap: 5px;
    animation: none;
  }

  .topic-indicator {
    display: none;
  }

  .reader-dock {
    padding: 6px 12px calc(6px + env(safe-area-inset-bottom, 0px));
  }

  .dock-capsule {
    width: min(380px, 100%);
    gap: 4px;
    padding: 3px 4px;
  }

  .dock-nav-btn {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }

  .dock-center-pill {
    padding: 2px 10px;
  }

  .dock-page-number {
    font-size: 12px;
  }

  .dock-topic-label {
    font-size: 10.5px;
  }
}

@media (max-width: 480px) {
  .reader-header {
    padding: 0 10px;
    gap: 6px;
  }

  .reader-header-right {
    gap: 5px;
  }

  .btn-back-cover {
    height: 32px;
    padding: 0 9px;
    font-size: 12px;
    gap: 4px;
  }

  .tool-btn {
    width: 31px;
    height: 31px;
  }

  .mobile-zoom-toggle {
    width: auto !important;
    height: 31px;
    padding: 0 8px;
    gap: 4px;
    font-size: 11px;
  }

  .mobile-zoom-toggle svg {
    display: none;
  }

  #btn-reader-auth,
  #btn-toggle-landscape {
    display: none !important;
  }

  .mobile-zoom-toggle {
    width: 31px !important;
    padding: 0 !important;
  }

  .mobile-zoom-toggle em {
    display: none;
  }

  .mobile-zoom-toggle svg {
    display: block !important;
  }
}

@media (max-width: 400px) {
  .reader-header {
    padding: 0 8px;
    gap: 4px;
  }

  .reader-header-right {
    gap: 4px;
  }

  .btn-back-cover {
    height: 30px;
    padding: 0 8px;
    font-size: 11.5px;
    gap: 3px;
  }

  .tool-btn {
    width: 29px;
    height: 29px;
  }

  .mobile-zoom-toggle {
    width: 29px !important;
    height: 29px;
  }

  .cover-topbar {
    padding: 10px 12px;
    gap: 6px;
  }

  .cover-access-pill {
    padding: 5px 9px;
    font-size: 10px;
    max-width: 58vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

/* =========================================================================
   LANDSCAPE READING MODE (Physical Landscape + In-App Forced 90deg Rotation)
   ========================================================================= */
body.is-force-landscape {
  overflow: hidden;
}

body.is-force-landscape .reader-screen.is-force-landscape {
  position: fixed;
  inset: auto;
  top: 50%;
  left: 50%;
  width: 100dvh;
  height: 100vw;
  transform: translate(-50%, -50%) rotate(90deg);
  transform-origin: center center;
  z-index: 50;
}

body.is-force-landscape .modal-backdrop,
body.is-force-landscape .tafsir-drawer-backdrop {
  inset: auto;
  top: 50%;
  left: 50%;
  width: 100dvh;
  height: 100vw;
  transform: translate(-50%, -50%) rotate(90deg);
  transform-origin: center center;
}

body.is-force-landscape .modal-drawer,
body.is-force-landscape .tafsir-drawer-panel {
  max-height: calc(100vw - 24px);
}

.reader-screen.is-compact-landscape {
  --header-height: 44px;
  --dock-height: 44px;
}

.reader-screen.is-compact-landscape .reader-header {
  padding: 0 12px;
  gap: 8px;
}

.reader-screen.is-compact-landscape .btn-back-cover,
.reader-screen.is-compact-landscape .tool-btn,
.reader-screen.is-compact-landscape .mobile-zoom-toggle {
  height: 30px;
  font-size: 11.5px;
}

.reader-screen.is-compact-landscape .tool-btn span {
  display: none;
}

.reader-screen.is-compact-landscape .tool-btn {
  width: 32px;
  padding: 0;
  justify-content: center;
}

.reader-screen.is-compact-landscape .mobile-zoom-toggle {
  display: inline-flex !important;
  width: auto !important;
  padding: 0 9px;
}

.reader-screen.is-compact-landscape .mobile-zoom-toggle svg {
  display: none;
}

.reader-screen.is-compact-landscape .zoom-btn-group,
.reader-screen.is-compact-landscape #btn-open-grid,
.reader-screen.is-compact-landscape #btn-toggle-fullscreen,
.reader-screen.is-compact-landscape .topic-indicator {
  display: none !important;
}

.reader-screen.is-compact-landscape #btn-reader-auth {
  display: inline-flex !important;
}

.reader-screen.is-compact-landscape #btn-toggle-spread {
  display: inline-flex !important;
  width: auto !important;
  padding: 0 9px !important;
  gap: 5px;
}

.reader-screen.is-compact-landscape #btn-toggle-spread #spread-mode-label {
  display: inline !important;
  font-size: 11px;
  font-weight: 600;
}

.reader-screen.is-compact-landscape .reader-dock {
  padding: 4px 12px;
}

.reader-screen.is-compact-landscape .dock-capsule {
  width: min(460px, 100%);
  padding: 2px 3px;
  gap: 4px;
}

.reader-screen.is-compact-landscape .dock-nav-btn {
  width: 30px;
  height: 30px;
  font-size: 14px;
}

.reader-screen.is-compact-landscape .dock-center-pill {
  flex-direction: row;
  gap: 8px;
  padding: 2px 10px;
}

.reader-screen.is-compact-landscape .dock-page-number {
  font-size: 11.5px;
  white-space: nowrap;
}

.reader-screen.is-compact-landscape .dock-topic-label {
  font-size: 11px;
  max-width: 180px;
}

.reader-screen.is-compact-landscape .zoom-floating-pill {
  left: auto;
  right: 10px;
  bottom: 8px;
  transform: none;
  padding: 3px 7px;
  gap: 4px;
  font-size: 11px;
}

.reader-screen.is-compact-landscape .zoom-floating-pill .pill-nav-btn,
.reader-screen.is-compact-landscape .zoom-floating-pill .pill-step-btn {
  width: 24px;
  height: 24px;
  font-size: 12px;
}

.reader-screen.is-compact-landscape .zoom-floating-pill.is-pill-idle {
  opacity: 0.14;
}

.reader-screen.is-compact-landscape .zoom-floating-pill:hover,
.reader-screen.is-compact-landscape .zoom-floating-pill:focus-within {
  opacity: 1;
}

@media (max-height: 540px) and (orientation: landscape) {
  .modal-drawer,
  .tafsir-drawer-panel {
    max-height: 92vh;
  }
}

@media (max-width: 767px) {
  .modal-drawer {
    max-width: 100%;
  }

  .pages-grid {
    grid-template-columns: repeat(auto-fill, minmax(95px, 1fr));
    gap: 10px;
  }
}

/* =========================================================================
   PAYWALL, ACCESS PILL & BUILT-IN AUTH/CHECKOUT MODAL
   ========================================================================= */
.cover-access-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(14, 13, 10, 0.72);
  border: 1px solid var(--vol-border);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--vol-accent);
  backdrop-filter: blur(10px);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 180ms ease, background 180ms ease;
}

.cover-access-pill:hover {
  border-color: var(--vol-accent);
  background: rgba(24, 21, 16, 0.9);
}

.cover-access-pill.is-unlocked {
  border-color: rgba(52, 211, 153, 0.45);
  color: #6EE7B7;
  background: rgba(6, 78, 59, 0.35);
}

.page-inner-locked {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(circle at center, rgba(28, 24, 18, 0.98) 0%, #0C0B09 100%);
  border: 1px solid rgba(212, 160, 82, 0.22);
  box-sizing: border-box;
}

.wisdom-lock-card {
  width: 100%;
  max-width: 340px;
  text-align: center;
  padding: 24px 20px;
  border-radius: 16px;
  background: rgba(18, 16, 12, 0.92);
  border: 1px solid var(--vol-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.75);
  color: var(--text-white);
  pointer-events: auto;
  position: relative;
  z-index: 25;
}

.wisdom-lock-eyebrow {
  display: block;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vol-accent);
  margin-bottom: 10px;
}

.wisdom-lock-icon {
  font-size: 24px;
  color: var(--vol-accent);
  margin-bottom: 8px;
}

.wisdom-lock-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: #F4EFE6;
  margin: 0 0 8px 0;
}

.wisdom-lock-desc {
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(244, 239, 230, 0.72);
  margin: 0 0 18px 0;
}

.wisdom-lock-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.wisdom-lock-btn-primary {
  width: 100%;
  padding: 11px 14px;
  border: none;
  border-radius: 10px;
  background: var(--vol-gradient);
  color: #161106;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: filter 150ms ease, transform 150ms ease;
}

.wisdom-lock-btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.wisdom-lock-btn-secondary {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--vol-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease;
}

.wisdom-lock-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--vol-accent);
}

.wisdom-lock-btn-link {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 11.5px;
  text-decoration: underline;
  cursor: pointer;
  padding: 4px;
}

.wisdom-lock-btn-link:hover {
  color: var(--vol-accent);
}

.page-thumb-locked-box {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(155deg, #17140f 0%, #0b0a08 100%);
  color: var(--vol-accent);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
}

.toc-item-lock {
  font-size: 11px;
  margin-left: 6px;
  opacity: 0.75;
}

.search-locked-banner {
  margin-top: 12px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--vol-border);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-white);
}

.w-auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: 14px;
}

.w-auth-tab {
  padding: 8px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.w-auth-tab.is-active {
  background: var(--vol-gradient);
  color: #161106;
}

.w-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.w-field-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.w-field-input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 13.5px;
  outline: none;
}

.w-field-input:focus {
  border-color: var(--vol-accent);
}

.w-auth-error {
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.14);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #FCA5A5;
  font-size: 12px;
  margin-bottom: 12px;
}

.w-offer-card {
  width: 100%;
  text-align: left;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  cursor: pointer;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: border-color 150ms ease, background 150ms ease;
}

.w-offer-card:hover,
.w-offer-card.is-selected {
  border-color: var(--vol-accent);
  background: rgba(212, 160, 82, 0.1);
}

.w-offer-title {
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 700;
}

.w-offer-sub {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.w-offer-price {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--vol-accent);
  white-space: nowrap;
}

.w-user-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  margin-bottom: 14px;
  font-size: 12px;
}

/* ==========================================================================
   IMMERSIVE FULL-SCREEN DYNAMIC COVER HERO & ACTIONS (ADAPTS TO ANY SCREEN)
   ========================================================================== */
.cover-topbar {
  flex: 0 0 auto;
  position: relative;
  z-index: 30;
  width: 100%;
  padding: max(10px, env(safe-area-inset-top, 10px)) 16px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-sizing: border-box;
}

.cover-stage {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px max(14px, env(safe-area-inset-bottom, 14px));
  box-sizing: border-box;
  overflow: hidden;
}

.cover-hero-wrap {
  flex: 1 1 auto;
  min-height: 0;
  width: fit-content;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.cover-hero-img {
  display: block;
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: 100%;
  object-fit: contain;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  user-select: none;
  -webkit-user-drag: none;
  image-rendering: high-quality;
}

.cover-hero-gradient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to bottom, #050504 0%, transparent 3%, transparent 97%, #050504 100%),
    linear-gradient(to right, #050504 0%, transparent 2.5%, transparent 97.5%, #050504 100%);
}

/* Extended Bottom Action Area (Stacked Vertically: Atas / Bawah) */
.cover-actions {
  flex: 0 0 auto;
  width: 100%;
  max-width: 330px;
  margin: 8px auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-sizing: border-box;
  position: relative;
  z-index: 20;
}

.btn-primary-enter {
  width: 100%;
  max-width: 320px;
  height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: var(--vol-gradient);
  color: #161208;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  box-shadow: 0 8px 28px var(--vol-accent-glow);
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 220ms ease,
              filter 220ms ease;
}

.btn-primary-enter:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 36px var(--vol-accent-glow);
  filter: brightness(1.06);
}

.btn-primary-enter:active {
  transform: scale(0.98);
  box-shadow: 0 4px 14px var(--vol-accent-glow);
}

.btn-primary-enter svg {
  transition: transform 200ms ease;
}

.btn-primary-enter:hover svg {
  transform: translateX(4px);
}

.btn-cover-toc {
  width: 100%;
  max-width: 320px;
  height: 40px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--text-white);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 200ms ease;
}

.btn-cover-toc:hover {
  background: rgba(212, 160, 82, 0.12);
  border-color: var(--vol-border);
  color: var(--vol-accent-hover);
  transform: translateY(-1px);
}

html[data-volume="2"] .btn-cover-toc:hover {
  background: rgba(168, 85, 247, 0.12);
  border-color: rgba(168, 85, 247, 0.35);
}

html[data-volume="2"] .btn-cover-toc:active {
  background: rgba(168, 85, 247, 0.2);
}

.btn-cover-toc:active {
  transform: scale(0.98);
  background: rgba(212, 160, 82, 0.2);
}

@media (min-width: 1024px) {
  .cover-stage {
    padding: 12px 24px max(24px, env(safe-area-inset-bottom, 24px));
  }

  .cover-actions {
    margin-top: 12px;
  }
}

@media (max-height: 600px) {
  .cover-topbar {
    padding: 6px 12px 2px;
  }

  .cover-stage {
    padding: 0 12px max(8px, env(safe-area-inset-bottom, 8px));
  }

  .cover-actions {
    margin-top: 4px;
    gap: 6px;
  }

  .btn-primary-enter {
    height: 38px;
    font-size: 12.5px;
  }

  .btn-cover-toc {
    height: 34px;
    font-size: 12px;
  }
}

/* =========================================================================
   CONTINUOUS VERTICAL SCROLL MODE, SAFE AUTO-CROP & INLINE TEXT READER
   ========================================================================= */
.btn-open-text-mode-pill {
  background: rgba(212, 175, 55, 0.14) !important;
  border-color: var(--vol-border) !important;
  color: var(--vol-accent) !important;
}

.btn-open-text-mode-pill .text-mode-label-short {
  font-weight: 700;
}

.btn-view-mode-pill.is-scroll-active {
  background: rgba(212, 175, 55, 0.14);
  border-color: var(--vol-border);
  color: var(--vol-accent);
}

@media (max-width: 1023px) {
  .btn-view-mode-pill {
    width: auto !important;
    min-width: max-content;
    padding: 0 9px !important;
    gap: 4px;
    border-radius: 999px;
    white-space: nowrap;
  }

  .btn-view-mode-pill .view-mode-short {
    display: inline !important;
    font-size: 11.5px;
    font-weight: 600;
    white-space: nowrap;
  }

  .btn-open-text-mode-pill {
    width: auto !important;
    min-width: max-content;
    height: 34px;
    padding: 0 10px !important;
    gap: 5px;
    border-radius: 999px;
    white-space: nowrap !important;
  }

  .btn-open-text-mode-pill .text-mode-label-short {
    display: inline !important;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
  }

  .btn-open-text-mode-pill .text-mode-label-extra {
    display: none !important;
  }
}

@media (max-width: 480px) {
  .btn-view-mode-pill {
    height: 31px;
    padding: 0 8px !important;
  }

  .btn-open-text-mode-pill {
    height: 31px;
    padding: 0 8px !important;
  }

  .btn-open-text-mode-pill .text-mode-label-short,
  .btn-view-mode-pill .view-mode-short {
    font-size: 11px;
  }
}

@media (max-width: 400px) {
  .btn-open-text-mode-pill svg,
  .btn-view-mode-pill svg {
    display: none;
  }

  .btn-open-text-mode-pill,
  .btn-view-mode-pill {
    height: 29px;
    padding: 0 7px !important;
  }
}

.reader-screen.is-scroll-mode #btn-toggle-spread,
.reader-screen.is-scroll-mode #btn-mobile-zoom {
  display: none !important;
}

.vertical-scroll-stage {
  position: relative;
  width: 100%;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  scroll-padding-top: 0;
  scroll-padding-bottom: 0;
  overscroll-behavior-y: contain;
  z-index: 5;
  padding: 0;
  margin: 0;
}

.vertical-scroll-stage[hidden] {
  display: none !important;
}

.reader-screen.ui-hidden.is-scroll-mode .vertical-scroll-stage {
  padding: 0;
  scroll-padding-top: 0;
  scroll-padding-bottom: 0;
}

@media (min-width: 1024px) {
  .vertical-scroll-stage {
    padding: 0;
    scroll-padding-top: 0;
    scroll-padding-bottom: 0;
  }
}

.vscroll-page-card {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100%;
  max-height: 100%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  -webkit-scroll-snap-stop: always;
  padding: 48px 10px 56px;
  box-sizing: border-box;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}

.reader-screen.ui-hidden.is-scroll-mode .vscroll-page-card {
  padding: 16px 10px 24px;
}

@media (min-width: 1024px) {
  .vscroll-page-card {
    padding: 56px 20px 64px;
  }
}

.vscroll-crop-frame {
  position: relative;
  width: 100%;
  max-width: min(760px, calc((100dvh - 120px) * 0.7067));
  height: auto;
  max-height: calc(100% - 32px);
  aspect-ratio: 0.7067;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--reader-canvas-bg, #f7f4ec);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.38), 0 2px 8px rgba(0, 0, 0, 0.22);
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.10);
  flex-shrink: 0;
  transform: scale(var(--vscroll-scale, 1));
  transform-origin: center center;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.vertical-scroll-stage.is-vscroll-zoomed .vscroll-page-card {
  overflow: visible;
}

.vertical-scroll-stage.is-vscroll-zoomed {
  overflow-x: auto;
}

html[data-volume="1"] .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-crop-frame {
  aspect-ratio: 0.684;
  max-width: min(760px, calc((100dvh - 120px) * 0.684));
}

html[data-volume="2"] .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-crop-frame {
  aspect-ratio: 0.631;
  max-width: min(760px, calc((100dvh - 120px) * 0.631));
}

.reader-screen.ui-hidden.is-scroll-mode .vscroll-crop-frame {
  max-width: min(760px, calc((100dvh - 56px) * 0.7067));
  max-height: calc(100% - 28px);
}

html[data-volume="1"] .reader-screen.ui-hidden.is-scroll-mode .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-crop-frame {
  max-width: min(760px, calc((100dvh - 56px) * 0.684));
}

html[data-volume="2"] .reader-screen.ui-hidden.is-scroll-mode .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-crop-frame {
  max-width: min(760px, calc((100dvh - 56px) * 0.631));
}

.vscroll-page-separator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  max-width: min(440px, 88%);
  margin-top: 10px;
  opacity: 0.65;
  user-select: none;
  pointer-events: none;
  flex-shrink: 0;
}

.vscroll-sep-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--text-muted, rgba(160, 140, 110, 0.45)), transparent);
}

.vscroll-sep-text {
  font-family: var(--font-eyebrow, 'Montserrat', sans-serif);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted, #8c8270);
  font-weight: 500;
  white-space: nowrap;
}

.vscroll-crop-frame .vscroll-page-img {
  display: block;
  flex-shrink: 0;
  width: 100%;
  height: auto;
  max-width: none;
  opacity: 0;
  transition: opacity 0.22s ease;
  user-select: none;
  -webkit-user-drag: none;
}

.vscroll-crop-frame .vscroll-page-img.loaded {
  opacity: 1;
}

/* Calibrated interior safe margin crop (verified min content inset across all Vol 1 & Vol 2 pages) */
html[data-volume="1"] .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-page-img {
  width: 105.4%;
  margin-left: 0;
  margin-top: -1.8%;
  margin-bottom: -0.5%;
}

html[data-volume="2"] .vertical-scroll-stage.is-auto-crop .vscroll-page-card:not([data-page="1"]) .vscroll-page-img {
  width: 114.68%;
  margin-left: 0;
  margin-top: -0.7%;
  margin-bottom: -1.6%;
}

.vscroll-page-skeleton {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 0.04em;
  background: rgba(15, 23, 21, 0.06);
  pointer-events: none;
}

.vscroll-crop-frame .vscroll-page-img:not(.loaded) {
  position: absolute;
  inset: 0;
}

.vscroll-crop-frame .vscroll-page-img.loaded + .vscroll-page-skeleton {
  display: none;
}

.vscroll-page-pill {
  position: absolute;
  bottom: 8px;
  right: 10px;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(12, 13, 18, 0.62);
  color: rgba(255, 255, 255, 0.88);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  pointer-events: none;
  backdrop-filter: blur(6px);
  z-index: 4;
}

.vscroll-card-actions {
  position: absolute;
  bottom: 8px;
  left: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 4;
}

.vscroll-zoom-hint-btn,
.vscroll-text-hint-btn {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(12, 13, 18, 0.72);
  color: rgba(255, 255, 255, 0.94);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(6px);
}

.vscroll-text-hint-btn {
  border-color: var(--vol-border);
  color: var(--vol-accent);
}

.reader-screen.ui-hidden .vscroll-card-actions,
.reader-screen.ui-hidden .vscroll-page-pill {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.vscroll-page-card .page-inner-locked {
  position: relative;
  width: 100%;
  max-width: min(580px, 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* Mode Teks Inline Slide-Over Drawer */
.text-reader-backdrop {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: rgba(4, 6, 10, 0.72);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: flex-end;
}

.text-reader-backdrop[hidden] {
  display: none !important;
}

.text-reader-drawer {
  width: min(680px, 100vw);
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #141716;
  color: #EAE7DF;
  border-left: 1px solid rgba(212, 175, 55, 0.25);
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.55);
}

body[data-theme="parchment"] .text-reader-drawer {
  background: #FAF6EC;
  color: #1F1B16;
  border-left-color: rgba(139, 101, 8, 0.22);
}

body[data-theme="emerald"] .text-reader-drawer {
  background: #0B1915;
  color: #E3EFEA;
}

.text-reader-head {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-shrink: 0;
}

.text-reader-eyebrow {
  display: block;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--vol-accent, #D4AF37);
}

.text-reader-heading {
  margin: 2px 0 0;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
}

.text-reader-tools {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.text-size-btn,
.text-close-btn {
  height: 32px;
  min-width: 34px;
  padding: 0 9px;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.28);
  background: rgba(255, 255, 255, 0.05);
  color: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.text-reader-body {
  flex: 1;
  overflow-y: auto;
  padding: 22px 24px 36px;
  font-family: 'Lora', Georgia, serif;
  font-size: var(--text-reader-size, 18px);
  line-height: 1.82;
}

.text-reader-body p {
  margin: 0 0 18px;
  text-align: left;
}

.text-reader-note {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 12.5px;
  opacity: 0.72;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(212, 175, 55, 0.08);
  border-left: 3px solid var(--vol-accent, #D4AF37);
  margin-bottom: 18px;
}

.text-reader-foot {
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-shrink: 0;
}

.text-nav-btn,
.text-visual-btn {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(212, 175, 55, 0.28);
  background: rgba(255, 255, 255, 0.05);
  color: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.text-visual-btn {
  background: var(--vol-accent, #D4AF37);
  color: #111;
  border-color: transparent;
  font-weight: 700;
}

.text-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@media (max-width: 600px) {
  .text-reader-body {
    padding: 18px 18px 28px;
  }

  .text-reader-foot {
    gap: 6px;
  }

  .text-nav-btn,
  .text-visual-btn {
    padding: 8px 10px;
    font-size: 11.5px;
  }
}