@font-face {
  font-family: "OpenDyslexic";
  src: url("/fonts/OpenDyslexic-Regular.otf") format("opentype"),
       url("fonts/OpenDyslexic-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexic";
  src: url("/fonts/OpenDyslexic-Italic.otf") format("opentype"),
       url("fonts/OpenDyslexic-Italic.otf") format("opentype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexic";
  src: url("/fonts/OpenDyslexic-Bold.otf") format("opentype"),
       url("fonts/OpenDyslexic-Bold.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexic";
  src: url("/fonts/OpenDyslexic-BoldItalic.otf") format("opentype"),
       url("fonts/OpenDyslexic-BoldItalic.otf") format("opentype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexicLocal";
  src: url("/fonts/OpenDyslexic-Regular.otf") format("opentype"),
       url("fonts/OpenDyslexic-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexicLocal";
  src: url("/fonts/OpenDyslexic-Italic.otf") format("opentype"),
       url("fonts/OpenDyslexic-Italic.otf") format("opentype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexicLocal";
  src: url("/fonts/OpenDyslexic-Bold.otf") format("opentype"),
       url("fonts/OpenDyslexic-Bold.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "OpenDyslexicLocal";
  src: url("/fonts/OpenDyslexic-BoldItalic.otf") format("opentype"),
       url("fonts/OpenDyslexic-BoldItalic.otf") format("opentype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f7f7f7;
  --surface-strong: #eeeeee;
  --ink: #111111;
  --muted: #666666;
  --muted-2: #888888;
  --line: #d7d7d7;
  --line-strong: #aaaaaa;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.14);
  --radius: 18px;
  --radius-small: 12px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --reader-font: Georgia, "Times New Roman", serif;
  --reader-scale: 100%;
  --reader-line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #050505;
    --surface: #111111;
    --surface-strong: #1a1a1a;
    --ink: #f5f5f5;
    --muted: #bbbbbb;
    --muted-2: #999999;
    --line: #333333;
    --line-strong: #555555;
    --shadow: 0 18px 60px rgba(0, 0, 0, 0.55);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  overscroll-behavior-y: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--bg);
  color: var(--ink);
  padding: 0.85rem 0.9rem;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--ink);
}

label,
.label-like {
  display: grid;
  gap: 0.45rem;
  color: var(--ink);
  font-size: 0.92rem;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 8vw, 4.2rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.65rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 0;
}

h3 {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

h4 {
  margin-bottom: 0.75rem;
}

.hidden {
  display: none !important;
}

.app-shell {
  min-height: 100svh;
  background: var(--bg);
}

.view {
  min-height: 100svh;
}

.view-auth {
  display: grid;
  place-items: center;
  padding: 1rem;
}

.auth-card {
  width: min(100%, 520px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 10px);
  background: var(--surface);
  padding: clamp(1.2rem, 5vw, 2.2rem);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.kebab-btn.offline-ready {
  color: #16a34a !important;
  border-color: rgba(22, 163, 74, 0.4) !important;
  background-color: rgba(22, 163, 74, 0.08) !important;
}

.kebab-btn.indicator-only {
  cursor: default;
  opacity: 0.6;
}

.kebab-btn.indicator-only.offline-ready {
  opacity: 1;
}

@media (prefers-color-scheme: dark) {
  .kebab-btn.offline-ready {
    color: #4ade80 !important;
    border-color: rgba(74, 222, 128, 0.4) !important;
    background-color: rgba(74, 222, 128, 0.12) !important;
  }
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.82rem;
}

.optional {
  color: var(--muted-2);
  font-size: 0.8rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.grid-two {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  margin: 1.5rem 0;
  padding: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
}

.segment,
.ghost,
.primary,
.selection-menu button {
  min-height: 44px;
  border-radius: 999px;
  padding: 0.7rem 1rem;
}

.segment {
  background: transparent;
  color: var(--muted);
}

.segment.active {
  background: var(--ink);
  color: var(--bg);
}

.primary {
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
  font-weight: 700;
}

.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.ghost:hover,
.ghost:focus-visible,
.card:hover,
.admin-card:hover {
  border-color: var(--line-strong);
}

.danger {
  color: var(--ink);
  border-style: dashed;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem;
  padding-top: max(0.75rem, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(18px);
}

.brand-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
}

.brand {
  background: transparent;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.2rem;
  padding: 0;
  min-height: auto;
}

.app-version-tag {
  font-size: 0.62rem;
  font-weight: 600;
  color: var(--muted-2);
  margin-top: 0.15rem;
  letter-spacing: 0.05em;
  user-select: none;
  opacity: 0.75;
}

.nav-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.nav-actions .ghost {
  padding-inline: 0.75rem;
  font-size: 0.85rem;
}

.panel {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.page-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card,
.admin-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
}

.card {
  text-align: left;
  color: var(--ink);
  display: grid;
  gap: 1rem;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease;
}

.card:hover {
  border-color: var(--ink);
}

.card h3 {
  margin-bottom: 0.2rem;
  font-size: 1.3rem;
}

.card-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.kebab-btn {
  min-height: 32px !important;
  padding: 0.2rem 0.5rem !important;
  font-size: 1.25rem !important;
  line-height: 1 !important;
  border-radius: var(--radius-small);
}

.card-row,
.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.avatar-row {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
}

.participant-avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}

.avatar-page-badge {
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.avatar {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 800;
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
}

.empty {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.admin-card.wide {
  margin-top: 1rem;
}

.checkbox-list {
  display: grid;
  gap: 0.4rem;
  max-height: 260px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  padding: 0.5rem;
  background: var(--bg);
}

.checkbox-list label {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  padding: 0.5rem;
  border-radius: var(--radius-small);
}

.checkbox-list input {
  width: auto;
}

.split-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.mini-list {
  display: grid;
  gap: 0.5rem;
}

.mini-item {
  display: grid;
  gap: 0.15rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--bg);
}

.reader-view {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  height: 100svh;
  overflow: hidden;
}

.reader-toolbar {
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.6rem 0.75rem;
  padding-top: max(0.6rem, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.reader-title-wrap {
  min-width: 0;
  text-align: center;
}

.reader-journey-title,
.reader-book-title {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-journey-title {
  color: var(--muted);
  font-size: 0.72rem;
}

.reader-book-title {
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.reader-tools {
  display: flex;
  gap: 0.35rem;
}

.reader-toolbar .ghost,
.reader-footer .ghost {
  min-height: 38px;
  padding: 0.45rem 0.65rem;
  font-size: 0.83rem;
}

.presence-strip {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.presence-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.55rem 0.2rem 0.2rem;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.78rem;
}

.book-stage {
  position: relative;
  min-height: 0;
  background: var(--bg);
  overflow: hidden;
}

.epub-viewer {
  width: 100%;
  height: 100%;
  padding: 0;
  background: var(--bg);
  user-select: text;
  -webkit-touch-callout: none;
}

.epub-viewer iframe {
  background: var(--bg) !important;
}

.page-tap {
  position: absolute;
  z-index: 2;
  top: 0;
  bottom: 0;
  width: clamp(16px, 4.5vw, 24px);
  background: transparent;
  border: 0;
  pointer-events: none;
  opacity: 0;
}

.page-tap-left {
  left: 0;
}

.page-tap-right {
  right: 0;
}

.reader-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem max(0.5rem, var(--safe-bottom));
  border-top: 1px solid var(--line);
  background: var(--bg);
}

.selection-menu {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(1rem + var(--safe-bottom));
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  max-width: calc(100vw - 1.5rem);
  width: max-content;
  overflow-x: auto;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.selection-menu button {
  flex: 0 0 auto;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  font-size: 0.85rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
}

.private-toggle {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0 0.65rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.private-toggle input {
  width: auto;
}

.side-drawer,
.bottom-drawer {
  position: fixed;
  z-index: 70;
  background: var(--surface);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  transition: transform 180ms ease;
}

.side-drawer {
  top: 0;
  right: 0;
  bottom: 0;
  width: min(88vw, 380px);
  transform: translateX(110%);
  padding: max(1rem, env(safe-area-inset-top)) 1rem 1rem;
  overflow: auto;
}

.side-drawer.open {
  transform: translateX(0);
}

.wide-side-drawer {
  width: min(92vw, 440px);
}

.notebook-filter-bar {
  margin-bottom: 1rem;
}

.notebook-content {
  display: grid;
  gap: 1.2rem;
}

.notebook-chapter-group {
  display: grid;
  gap: 0.75rem;
}

.notebook-chapter-group h4 {
  margin: 0;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--muted);
}

.notebook-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 0.85rem;
  display: grid;
  gap: 0.5rem;
}

.notebook-passage {
  cursor: pointer;
  margin: 0;
  padding: 0.65rem 0.75rem;
  border-left: 3px solid var(--line-strong);
  border-radius: var(--radius-small);
  background: var(--surface);
  font-family: var(--reader-font);
  font-size: 0.92rem;
  line-height: 1.4;
  transition: border-color 150ms ease, background 150ms ease;
}

.notebook-passage:hover {
  border-color: var(--ink);
  background: var(--surface-strong);
}

.notebook-notes {
  display: grid;
  gap: 0.4rem;
  padding-top: 0.35rem;
}

.bottom-drawer {
  left: 0;
  right: 0;
  bottom: 0;
  max-height: min(82svh, 720px);
  transform: translateY(110%);
  border-radius: calc(var(--radius) + 8px) calc(var(--radius) + 8px) 0 0;
  padding: 0.4rem 1rem max(1rem, calc(1rem + var(--safe-bottom)));
  overflow: auto;
}

.bottom-drawer.open {
  transform: translateY(0);
}

.drawer-handle {
  width: 3.2rem;
  height: 0.25rem;
  border-radius: 999px;
  background: var(--line-strong);
  margin: 0.35rem auto 0.75rem;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.drawer-header h3 {
  margin: 0;
}

.toc-list {
  display: grid;
  gap: 0.25rem;
}

.toc-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.75rem;
  border-radius: var(--radius-small);
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
}

.toc-subitem {
  margin-left: 1rem;
}

.passage-quote {
  margin: 0 0 1rem;
  padding: 1rem;
  border-left: 4px solid var(--line-strong);
  border-radius: var(--radius-small);
  background: var(--bg);
  color: var(--ink);
  font-family: var(--reader-font);
  line-height: var(--reader-line-height);
}

.discussion-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.comment-form {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.comment-list {
  display: grid;
  gap: 0.75rem;
}

.comment-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 0.85rem;
}

.comment-card.reply {
  margin-left: 1rem;
  border-style: dashed;
}

.comment-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.comment-author {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
}

.comment-author strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.comment-content {
  white-space: pre-wrap;
  line-height: 1.5;
}

.comment-actions,
.reactions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.65rem;
}

.status-pill {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  transition: all 150ms ease;
}

.status-pill.offline {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fca5a5;
}

@media (prefers-color-scheme: dark) {
  .status-pill.offline {
    background: #450a0a;
    color: #fca5a5;
    border-color: #991b1b;
  }
}

.text-button,
.reaction-button {
  min-height: 34px;
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-size: 0.82rem;
}

.reaction-button.active {
  border-color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.reply-form {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.settings-dialog {
  width: min(92vw, 460px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

.settings-card {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.toast {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: calc(1rem + var(--safe-bottom));
  z-index: 120;
  width: fit-content;
  max-width: calc(100% - 2rem);
  margin: 0 auto;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow);
}

.external-links {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.external-links a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 120ms ease;
}

.external-links a:hover {
  color: var(--ink);
}

@media (min-width: 720px) {
  .grid-two,
  .admin-grid,
  .split-list {
    grid-template-columns: 1fr 1fr;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .panel {
    padding: 1.5rem;
  }

  .selection-menu {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: max-content;
    max-width: calc(100vw - 2rem);
  }

  .bottom-drawer {
    left: 50%;
    right: auto;
    transform: translate(-50%, 110%);
    width: min(760px, calc(100vw - 1.5rem));
    border-radius: calc(var(--radius) + 8px);
    bottom: 0.75rem;
  }

  .bottom-drawer.open {
    transform: translate(-50%, 0);
  }
}

@media (min-width: 1040px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .book-stage {
    margin: 0 auto;
    width: min(100%, 980px);
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
  }
}

/* Custom PNG Icons Styling */
.brand-logo {
  width: 1.5rem;
  height: 1.5rem;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 0.45rem;
}

.icon-btn-img {
  width: 1.25rem;
  height: 1.25rem;
  object-fit: contain;
  vertical-align: middle;
}

.icon-inline {
  width: 1.05rem;
  height: 1.05rem;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 0.35rem;
}

@media (prefers-color-scheme: dark) {
  .brand-logo,
  .icon-btn-img,
  .icon-inline {
    filter: invert(1);
  }
}

/* Icon button & Notification badge */
.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.badge-pill {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ef4444;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  padding: 0.2rem 0.45rem;
  border-radius: 9999px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Return to Reading Position Banner */
.return-banner {
  position: fixed;
  bottom: calc(1.5rem + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 95;
  background: var(--surface-strong);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  backdrop-filter: blur(12px);
  animation: slideUp 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translate(-50%, 15px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

.return-banner-btn {
  background: var(--ink);
  color: var(--bg);
  border: none;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 120ms ease;
}

.return-banner-btn:hover {
  opacity: 0.9;
}

/* Search Drawer */
.search-form-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.search-form-row input {
  flex: 1;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
  max-height: calc(100vh - 180px);
}

.search-result-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  padding: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.search-result-card:hover {
  border-color: var(--ink);
}

.search-result-header {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.search-snippet {
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ink);
}

.search-snippet mark {
  background: rgba(254, 224, 78, 0.6);
  color: inherit;
  border-radius: 2px;
  padding: 0 2px;
}

/* Notifications Drawer */
.notifications-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.notifications-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
  max-height: calc(100vh - 200px);
}

.notification-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  padding: 0.85rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  cursor: pointer;
  transition: border-color 120ms ease;
}

.notification-card.unread {
  border-left: 4px solid var(--ink);
}

.notification-card:hover {
  border-color: var(--ink);
}

.small-btn {
  padding: 0.3rem 0.65rem !important;
  font-size: 0.8rem !important;
  min-height: auto !important;
}

/* Responsive Mobile Topbar Navigation */
.mobile-only {
  display: none !important;
}

@media (max-width: 680px) {
  .desktop-only {
    display: none !important;
  }
  .mobile-only {
    display: inline-flex !important;
  }

  .topbar {
    padding: 0.65rem 0.85rem;
  }

  .reader-toolbar {
    padding: 0.5rem 0.85rem;
    gap: 0.5rem;
  }

  .reader-tools {
    gap: 0.35rem;
  }

  .reader-tools button {
    padding: 0.35rem 0.55rem;
    font-size: 0.82rem;
  }

  .mobile-nav-drawer {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--surface-strong);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    position: relative;
    z-index: 99;
  }

  .mobile-nav-drawer.hidden {
    display: none;
  }

  .mobile-nav-drawer button {
    text-align: left;
    width: 100%;
    padding: 0.65rem 0.85rem;
  }

  #mobile-reader-tools-drawer {
    align-items: flex-end;
  }

  #mobile-reader-tools-drawer button {
    text-align: right;
    width: fit-content;
  }
}

/* Definition Modal Styling */
.definition-dialog {
  width: min(92vw, 520px);
  max-height: 85vh;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.definition-dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
}

.definition-card {
  display: flex;
  flex-direction: column;
  max-height: 85vh;
}

.definition-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.definition-phonetic {
  font-family: monospace;
  color: var(--muted);
  font-size: 0.9rem;
}

.definition-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.definition-pos-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.definition-pos-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.definition-pos-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--line-strong);
  color: var(--ink);
}

.definition-list {
  margin: 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.definition-item {
  line-height: 1.5;
  font-size: 0.95rem;
}

.definition-example {
  margin-top: 0.25rem;
  font-style: italic;
  color: var(--muted);
  font-size: 0.88rem;
}