/* ===========================
   CSS VARIABLES (THEME)
   =========================== */

   /* ==== GLOBAL FONTS ==== */
/* Reader serif font (Google Fonts) */
@import url('https://fonts.googleapis.com/css2?family=Merriweather:wght@400;700&display=swap');

:root {
  /* UI font (menus, buttons, etc.) */
  --font-ui: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
             Roboto, Helvetica, Arial, sans-serif;

  /* Reader font (book text) */
  --font-reader: "Merriweather", "Georgia", serif;

  /* You probably already have your color variables here —
     if so, just merge these into the existing :root. */
}

/* Make all normal text use the UI font by default */
body {
  font-family: var(--font-ui);
}

:root {
  /* Colors */
  --color-bg-body: #05060a;
  --color-bg-main-top: #182538;
  --color-bg-main-bottom: #05060a;
  --color-bg-sidebar-top: #1b252f;
  --color-bg-sidebar-bottom: #05070b;
  --color-card-top: #0d1420;
  --color-card-bottom: #05070c;
  --color-reader-page: #08121e;

  --color-border-soft: #111826;
  --color-border-strong: #243347;

  --color-accent: #4ea1ff;
  --color-text-main: #e9f1ff;
  --color-text-muted: #9aa4c3;
  --color-text-subtle: #7f8aa3;

  /* Fonts */
  --font-ui: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-reader: "Georgia", "Times New Roman", serif;
  --reader-font-size: 0.98rem;

  /* Shadows */
  --shadow-strong: 0 20px 40px rgba(0, 0, 0, 0.55);
  --shadow-page: 0 16px 40px rgba(0, 0, 0, 0.7);
}

/* Background styles by data attribute */
:root[data-bg-style="nebula"] body,
:root[data-bg-style="nebula"] .reader-body {
  background: radial-gradient(circle at top, var(--color-bg-main-top) 0, var(--color-bg-main-bottom) 55%);
}

:root[data-bg-style="parchment"] body,
:root[data-bg-style="parchment"] .reader-body {
  background: radial-gradient(circle at top, #3f3425 0, #1f1910 55%);
}

:root[data-bg-style="void"] body,
:root[data-bg-style="void"] .reader-body {
  background: radial-gradient(circle at top, #2b0915 0, #080208 55%);
}

/* ===========================
   GLOBAL RESET / BASE
   =========================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--color-text-main);
  background: radial-gradient(circle at top, var(--color-bg-main-top) 0, var(--color-bg-main-bottom) 55%);
}

a {
  color: inherit;
  text-decoration: none;
}

/* animations off */
body.no-animations * {
  transition: none !important;
  animation: none !important;
}

/* reduced effects */
body.reduced-effects {
  --shadow-strong: none;
  --shadow-page: none;
}

/* ===========================
   APP LAYOUT
   =========================== */
.app {
  min-height: 100vh;
  display: flex;
}

/* ----- Sidebar ----- */
.sidebar {
  width: 230px;
  background: linear-gradient(180deg, var(--color-bg-sidebar-top) 0%, var(--color-bg-sidebar-bottom) 100%);
  display: flex;
  flex-direction: column;
  padding: 24px 18px 18px;
}

.sidebar-logo {
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #edf4ff;
  margin-bottom: 28px;
  opacity: 0.9;
}

.sidebar-top {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-item {
  border: none;
  background: transparent;
  color: #c8d4ea;
  padding: 10px 10px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  width: 100%;
  text-align: left;
  transition: background 0.15s ease-out, transform 0.1s ease-out;
}

.icon-slot {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.6;
  stroke: currentColor;
  fill: none;
}

.icon-img {
  display: none;
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.icon-slot.icon-slot-custom .icon-svg {
  display: none;
}
.icon-slot.icon-slot-custom .icon-img {
  display: block;
}

.sidebar-item:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-1px);
}

.sidebar-item.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.sidebar-bottom {
  margin-top: auto;
}

/* ----- Main area ----- */
.main {
  flex: 1;
  padding: 20px 32px 28px;
}

/* Views */
.view {
  display: none;
  margin-top: 10px;
}

.view.view-active {
  display: block;
}

/* ===========================
   TOP BAR / FILTERS (LIBRARY)
   =========================== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, var(--color-card-top) 0%, var(--color-card-bottom) 100%);
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid var(--color-border-soft);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.45);
}

.filters {
  display: flex;
  gap: 6px;
}

.filter-btn {
  border: 1px solid var(--color-border-strong);
  background: rgba(5, 10, 20, 0.8);
  color: #cfd9ee;
  padding: 6px 16px;
  border-radius: 2px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background 0.15s ease-out,
    border-color 0.15s ease-out,
    color 0.15s ease-out,
    transform 0.1s ease-out;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: linear-gradient(to bottom, rgba(78, 161, 255, 0.16), rgba(10, 25, 45, 0.95));
  border-color: var(--color-accent);
  color: #ffffff;
}

/* Genre button + dropdown */
.genre-wrapper {
  position: relative;
  display: inline-block;
}

/* Animated dropdown */
.genre-dropdown {
  position: absolute;
  top: 120%;
  left: 0;
  min-width: 180px;
  background: #050914;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.7);
  padding: 6px;
  z-index: 20;

  max-height: 0;
  opacity: 0;
  transform: translateY(-4px);
  overflow: hidden;
  pointer-events: none;
  transition:
    max-height 0.18s ease-out,
    opacity 0.16s ease-out,
    transform 0.16s ease-out;
}

.genre-dropdown.open {
  max-height: 220px;
  opacity: 1;
  transform: translateY(4px);
  overflow-y: auto;
  pointer-events: auto;
}

/* Genre options */
.genre-option {
  width: 100%;
  text-align: left;
  padding: 6px 10px;
  border: none;
  background: transparent;
  color: #e0e6f3;
  font-size: 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s ease-out, color 0.12s ease-out;
}

.genre-option:hover {
  background: #1a2234;
}

.genre-option.selected {
  background: rgba(78, 161, 255, 0.18);
  color: #ffffff;
  border-radius: 4px;
}

.search-box {
  min-width: 220px;
}

.search-input {
  width: 100%;
  background: #0c131f;
  border: 1px solid var(--color-border-strong);
  border-radius: 2px;
  padding: 6px 10px;
  color: #dfe6ff;
  font-size: 0.8rem;
  outline: none;
}

.search-input::placeholder {
  color: #687792;
}

/* ===========================
   LIBRARY TABLE
   =========================== */
.library-table {
  margin-top: 18px;
  background: linear-gradient(180deg, var(--color-card-top) 0%, var(--color-card-bottom) 60%);
  border-radius: 4px;
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-strong);
  overflow: hidden;
}

.table-header,
.table-row {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr auto;
  align-items: center;
  padding: 10px 16px;
}

.table-header {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  background: rgba(5, 10, 20, 0.9);
  border-bottom: 1px solid #151c2a;
}

.table-row {
  border: none;
  width: 100%;
  text-align: left;
  font-size: 0.9rem;
  background: transparent;
  color: var(--color-text-main);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: background 0.15s ease-out, transform 0.1s ease-out;
}

.table-row:nth-child(even) {
  background: rgba(255, 255, 255, 0.01);
}

.table-row:hover {
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

.table-row .title {
  font-weight: 600;
}

/* Favourite star */
.fav {
  font-size: 1.1rem;
  cursor: pointer;
  user-select: none;
  text-align: right;
  opacity: 0.7;
  transition: opacity 0.12s ease-out, transform 0.1s ease-out;
}

.fav:hover {
  opacity: 1;
  transform: translateY(-1px);
}

.fav-on {
  color: #ffd76a;
  opacity: 1;
}

/* ===========================
   VIEW HEADERS / CARDS
   =========================== */
.view-header {
  margin-top: 12px;
  margin-bottom: 14px;
}

.view-header h1 {
  margin: 0 0 4px;
  font-size: 1.4rem;
}

.view-header p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Customization grid */
.custom-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 2fr);
  gap: 16px;
}

.custom-card {
  background: #0c111b;
  border-radius: 10px;
  border: 1px solid var(--color-border-soft);
  padding: 14px 14px 16px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.5);
}

.custom-card h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.custom-sub {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Preset list */
.preset-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preset-card {
  width: 100%;
  border-radius: 8px;
  padding: 8px 10px;
  border: 1px solid var(--color-border-strong);
  background: #050811;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background 0.15s ease-out, border-color 0.15s ease-out, transform 0.1s ease-out;
}

.preset-card:hover {
  background: #10182a;
  transform: translateY(-1px);
}

.preset-card.preset-active {
  border-color: var(--color-accent);
  background: radial-gradient(circle at top left, rgba(78, 161, 255, 0.2), #050811);
}

.preset-swatches {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.preset-pill {
  display: block;
  width: 26px;
  height: 10px;
  border-radius: 999px;
}

/* Eden swatches */
.preset-pill-1 {
  background: linear-gradient(to right, #243a63, #4ea1ff);
}
.preset-pill-2 {
  background: linear-gradient(to right, #05060a, #151b27);
}

/* Parchment swatches */
.preset-pill-parchment-1 {
  background: linear-gradient(to right, #cfa26e, #f4e2c8);
}
.preset-pill-parchment-2 {
  background: linear-gradient(to right, #3f3425, #1f1910);
}

/* Crimson swatches */
.preset-pill-crimson-1 {
  background: linear-gradient(to right, #ff5d7a, #ff9fb4);
}
.preset-pill-crimson-2 {
  background: linear-gradient(to right, #2b0915, #080208);
}

.preset-info {
  text-align: left;
}

.preset-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.preset-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Secondary button */
.secondary-btn {
  margin-top: 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  background: transparent;
  color: var(--color-text-muted);
  padding: 6px 14px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s ease-out, color 0.15s ease-out, transform 0.1s ease-out;
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-main);
  transform: translateY(-1px);
}

/* Fields */
.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.field-row label,
.field-row span {
  color: var(--color-text-main);
}

.field-row input[type="color"] {
  width: 40px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid var(--color-border-strong);
  padding: 0;
  background: #050811;
  cursor: pointer;
}

.field-row select {
  flex: 1;
  max-width: 200px;
  background: #050811;
  border-radius: 4px;
  border: 1px solid var(--color-border-strong);
  color: #dde5ff;
  padding: 4px 8px;
  font-size: 0.85rem;
}

/* Icon upload rows */
.icon-upload-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.icon-upload-row span {
  color: var(--color-text-main);
}

.icon-upload-row input[type="file"] {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.icon-preview {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--color-border-strong);
  background: #050811 center/contain no-repeat;
}

.icon-preview.has-icon {
  background-color: #050811;
}

/* Chips (font size) */
.chip-row {
  display: inline-flex;
  gap: 6px;
}

.chip {
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.8rem;
  border: 1px solid var(--color-border-strong);
  background: transparent;
  color: #cfd9ee;
  cursor: pointer;
  transition: background 0.15s ease-out, border-color 0.15s ease-out, transform 0.1s ease-out;
}

.chip:hover {
  background: #1a2636;
  transform: translateY(-1px);
}

.chip-active {
  border-color: var(--color-accent);
  background: #1a2636;
  color: #ffffff;
}

/* Background chips */
.bg-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.bg-chip {
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.8rem;
  border: 1px solid var(--color-border-strong);
  background: transparent;
  color: #cfd9ee;
  cursor: pointer;
  transition: background 0.15s ease-out, border-color 0.15s ease-out, transform 0.1s ease-out;
}

.bg-chip:hover {
  background: #1a2636;
  transform: translateY(-1px);
}

.bg-chip-active {
  border-color: var(--color-accent);
  background: #1a2636;
  color: #ffffff;
}

/* Workshop button */
.disabled-btn {
  margin-top: 8px;
  border-radius: 999px;
  border: 1px dashed #3a4660;
  background: transparent;
  color: #929fba;
  padding: 8px 16px;
  font-size: 0.85rem;
  cursor: default;
}

/* ===========================
   SETTINGS
   =========================== */
.settings-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  background: #0c111b;
  border-radius: 8px;
  border: 1px solid var(--color-border-soft);
  cursor: pointer;
}

.settings-item input[type="checkbox"] {
  margin-top: 4px;
}

.settings-text {
  flex: 1;
}

.settings-title {
  font-size: 0.92rem;
  font-weight: 500;
}

.settings-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ===========================
   BOOK PAGE (INFO + COVER)
   =========================== */
.page {
  max-width: 900px;
  margin: 40px auto;
  padding: 24px 20px 40px;
  background: linear-gradient(180deg, var(--color-card-top) 0%, var(--color-card-bottom) 100%);
  color: var(--color-text-main);
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
}

.page nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 0.9rem;
}

.page nav a {
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  background: rgba(0, 0, 0, 0.25);
  color: #cdd7f3;
}

.page nav a:hover {
  background: var(--color-card-top);
}

.page h1,
.page h2 {
  margin-top: 0;
}

/* Book meta */
.book-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  align-items: flex-start;
}

.book-cover {
  width: 140px;
  height: 210px;
  border-radius: 6px;
  border: 1px solid var(--color-border-strong);
  background: linear-gradient(135deg, var(--color-card-top), #05070f);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #9ca9c5;
}

.book-info p {
  margin: 4px 0;
}

/* "Read" button */
.read-btn {
  margin-top: 12px;
  border-radius: 999px;
  border: 1px solid #2d3b52;
  background: #1a2636;
  color: #e9efff;
  padding: 8px 18px;
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.15s ease-out, transform 0.1s ease-out;
}

.read-btn:hover {
  background: #24344a;
  transform: translateY(-1px);
}

/* ===========================
   BOOKMARKS ON BOOK PAGE
   =========================== */
.bookmark-section {
  margin-top: 24px;
}

.bookmark-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bookmark-empty {
  font-size: 0.9rem;
  color: #929fba;
}

.bookmark-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.bookmark-link {
  flex: 1;
  text-align: left;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  background: transparent;
  padding: 6px 12px;
  color: #dfe6ff;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease-out, transform 0.1s ease-out;
}

.bookmark-link:hover {
  background: #1a2536;
  transform: translateY(-1px);
}

.bookmark-delete {
  border-radius: 999px;
  border: 1px solid #3a4660;
  background: transparent;
  color: #f2a5a5;
  width: 28px;
  height: 28px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.15s ease-out, transform 0.1s ease-out;
}

.bookmark-delete:hover {
  background: #3b1c24;
  transform: translateY(-1px);
}

.bookmark-hint {
  margin-top: 6px;
  font-size: 0.8rem;
  color: #8c98b5;
}

/* ================== READER LAYOUT OVERRIDE ================== */

.reader-body {
    background: radial-gradient(circle at 50% 0%, #101624 0, #05070c 55%, #020308 100%);
    color: var(--text-color, #d7e2ff);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
}

.reader-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* top bar */
.reader-top {
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.2));
    backdrop-filter: blur(16px);
}

#reader-title {
    font-size: 14px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(223, 235, 255, 0.9);
}

/* main area */
.reader-main {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 40px 0 80px;
}

.spread {
    display: flex;
    gap: 40px;
    width: 100%;
    max-width: 1200px;
    justify-content: center;
}

/* single page: center it */
.spread.single-page {
    justify-content: center;
}

/* page cards */
.page-column {
  flex: 1;
  max-width: 580px;
  padding: 0 4px;
  background: none;
  box-shadow: none;
  border-radius: 0;
  color: var(--color-text-main);
  font-family: var(--font-reader, "Georgia", serif); /* <— key line */
  font-size: var(--reader-font-size, 0.98rem);
  line-height: 1.65;
}

/* text inside pages */
.page-column p {
    margin: 0 0 0.8rem;
    white-space: pre-wrap;         /* keep your manual line breaks */
}

/* first paragraph after a heading: a bit more breathing room */
.page-column h1,
.page-column h2,
.page-column h3 {
    margin: 0 0 1.4rem;
    text-align: center;
    font-weight: 600;
    font-size: 18px;
}

.page-column > p:first-child {
    margin-top: 0.4rem;
}

/* bottom bar */
.reader-bottom {
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px 16px;
    gap: 16px;
}

.reader-pager {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(210, 225, 255, 0.8);
}

/* buttons */
.reader-btn,
.pager-btn {
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(6, 12, 20, 0.9);
    color: rgba(230, 238, 255, 0.9);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.reader-btn:hover,
.pager-btn:hover {
    background: rgba(20, 40, 70, 0.95);
    border-color: rgba(255, 255, 255, 0.22);
    transform: translateY(-1px);
}

.pager-btn:disabled {
    opacity: 0.35;
    cursor: default;
    transform: none;
}


/* =========================================================
   RESPONSIVE LAYOUT
   ========================================================= */

/* --- Large phones / small tablets --- */
@media (max-width: 900px) {

  /* General padding */
  .app-shell,
  .book-shell {
    padding: 16px 16px 32px !important;
  }

  /* Sidebar + main layout, if you have a sidebar */
  .app-layout,
  .library-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .sidebar-nav-item {
    justify-content: flex-start;
  }

  /* Filter bar: wrap to multiple lines nicely */
  .filter-row,
  .library-controls {
    flex-wrap: wrap;
    gap: 8px;
  }

  .filter-row > * {
    flex: 1 1 auto;
  }

  .search-input {
    width: 100% !important;
  }

  /* Library table: horizontal scroll instead of squashing */
  .library-table-wrapper {
    overflow-x: auto;
  }

  table.library-table {
    min-width: 600px; /* so columns stay readable */
  }

  /* BOOK INFO PAGE */

  .book-main-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .book-cover {
    width: 140px;
    height: 210px;
  }

  .book-meta-area {
    width: 100%;
  }

  .book-title {
    font-size: 20px;
    white-space: normal;
  }

  .book-meta-line {
    font-size: 12px;
  }

  .book-read-btn {
    margin-left: 0;
    margin-top: 8px;
  }

  .book-description {
    max-width: 100%;
    font-size: 12.5px;
  }

  /* READER */

  .reader-top {
    padding: 0 16px;
  }

  .reader-bottom {
    padding: 0 16px 12px;
  }

  .reader-main {
    padding: 16px 0 56px;
  }

  .spread {
    flex-direction: column;
    max-width: 100%;
    padding: 0 16px;
    gap: 16px;
  }

  .page-column {
    max-width: 100%;
    font-size: 0.95rem;
  }

  /* If you want only ONE page visible on narrow screens,
     uncomment this block and remove the right page via JS.
     For now we just stack them. */
  /*
  .page-column#rightPage {
    display: none;
  }
  */

  /* Buttons slightly bigger for touch */
  .btn,
  .back-btn,
  .reader-btn,
  .pager-btn {
    padding: 7px 18px;
    font-size: 12px;
  }
}

/* --- Very small phones --- */
@media (max-width: 540px) {
  .reader-top #reader-title {
    font-size: 12px;
  }

  .book-title {
    font-size: 18px;
  }

  .book-meta-line {
    font-size: 11px;
  }
}