:root {
  --reader-bg: #f6f1e7; --reader-text: #302b24; --reader-muted: #736b60;
  --reader-border: #ded5c6; --reader-surface: #eee7db; --reader-font: 18px;
}
body[data-reader-theme="light"] {
  --reader-bg: #fff; --reader-text: #252c35; --reader-muted: #657081;
  --reader-border: #e1e6ec; --reader-surface: #f3f5f8;
}
body[data-reader-theme="dark"] {
  --reader-bg: #15191f; --reader-text: #e0e4e9; --reader-muted: #9ca6b5;
  --reader-border: #303640; --reader-surface: #222832;
}
.reading-mode {
  background: var(--reader-bg); color: var(--reader-text);
  --text: var(--reader-text); --muted: var(--reader-muted);
  --panel: var(--reader-bg); --panel-alt: var(--reader-surface); --border: var(--reader-border);
}
.reading-mode header, .reading-mode nav { background: var(--reader-bg); }
.reading-mode header { border-color: var(--reader-border); }
.reading-mode .controls { display: none; }
.reading-mode .brand-badge { background: var(--reader-surface); color: var(--reader-muted); }
.reading-mode .nav-btn.active { background: var(--reader-surface); color: var(--reader-text); border-color: var(--reader-border); }
.reading-mode main { max-width: none; padding-bottom: 130px; }
#tab-reader { width: 100%; max-width: 700px; margin: 0 auto; }
.reader-toolbar { border-bottom: 1px solid var(--reader-border); padding: 0 0 20px; }
.reader-heading { display: flex; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.reader-heading h2 { font-size: 22px; margin: 0; letter-spacing: -.04em; }
.eyebrow { margin: 0 0 5px; color: var(--reader-muted); font-size: 11px; letter-spacing: .08em; }
.reader-muted { color: var(--reader-muted); font-size: 13px; }
.reader-heading > span { text-align: right; flex-shrink: 0; }
.chapter-picker { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 12px; font-size: 13px; }
.chapter-picker > span { color: var(--reader-muted); }
.chapter-picker select { width: 100%; min-width: 0; padding: 10px 32px 10px 12px;
  border: 1px solid var(--reader-border); background: var(--reader-surface);
  color: var(--reader-text); border-radius: 10px; text-overflow: ellipsis; font-size: 16px; }
.reader-settings { margin-top: 12px; }
.reader-settings summary, .reader-details summary {
  color: var(--reader-muted); font-size: 13px; cursor: pointer; padding: 10px 0;
}
.reader-settings-inner { display: flex; gap: 16px; justify-content: space-between; flex-wrap: wrap; padding: 8px 0 0; }
.font-controls, .theme-controls { display: flex; align-items: center; gap: 6px; }
.font-controls output { font-size: 13px; width: 42px; text-align: center; }
.reader-settings button { border: 1px solid var(--reader-border); border-radius: 9px;
  background: var(--reader-surface); color: var(--reader-text); padding: 8px 11px; font-size: 14px; }
.theme-controls button[aria-pressed="true"] { border-color: #0e7490; color: #0e7490; box-shadow: inset 0 0 0 1px #0e7490; }
body[data-reader-theme="dark"] .theme-controls button[aria-pressed="true"] { border-color: #67d5ee; color: #67d5ee; }
.chapter-heading { padding: 30px 0 12px; }
.chapter-heading h2 { font-size: 23px; line-height: 1.55; letter-spacing: -.04em; margin: 10px 0; }
.chapter-heading p { margin: 0; min-height: 20px; }
.reader-status { display: inline-block; font-size: 11px; color: var(--reader-muted); border: 1px solid var(--reader-border); padding: 3px 8px; border-radius: 6px; }
.reader-box { width: 100%; max-width: none; padding: 12px 0 30px; margin: 0;
  background: transparent; border: 0; border-radius: 0; color: var(--reader-text);
  font-size: var(--reader-font); line-height: 1.95; letter-spacing: -.018em;
  white-space: pre-wrap; overflow-wrap: anywhere; word-break: normal; line-break: strict;
}
.reader-box[aria-busy="true"] { color: var(--reader-muted); }
.reader-details { padding: 10px 0 24px; border-top: 1px solid var(--reader-border); }
#ms-meta { color: var(--reader-muted); font-size: 13px; line-height: 1.8; padding: 8px 0; }
.reader-dock { position: fixed; z-index: 20; bottom: max(12px, env(safe-area-inset-bottom));
  left: calc(50% + 110px); transform: translateX(-50%); width: min(570px, calc(100% - 270px));
  display: grid; grid-template-columns: minmax(0, 1fr) 86px minmax(0, 1fr); gap: 4px;
  background: var(--reader-bg); border: 1px solid var(--reader-border);
  border-radius: 16px; padding: 7px; box-shadow: 0 4px 24px #00000016;
}
.reader-dock button { border: 0; border-radius: 10px; background: var(--reader-surface);
  color: var(--reader-text); padding: 10px 8px; font-size: 14px; min-height: 48px; }
.reader-dock .chapter-position { background: transparent; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 3px; }
.chapter-position span { font-size: 13px; font-weight: 700; }
.chapter-position small { font-size: 10px; color: var(--reader-muted); }
@media (max-width: 800px) {
  .reading-mode main { padding: 20px 20px 130px; }
  .reading-mode header { padding: 12px 16px; }
  .reading-mode .brand h1 { font-size: 14px; }
  .reader-dock { left: 50%; width: calc(100% - 24px); max-width: 570px; }
  .chapter-heading { padding-top: 28px; }
  .chapter-heading h2 { font-size: 21px; }
  .reader-heading h2 { font-size: 20px; }
}
@media (max-width: 360px) {
  .reading-mode main { padding-left: 16px; padding-right: 16px; }
  .reader-heading > span { font-size: 11px; }
  .chapter-picker { grid-template-columns: minmax(0, 1fr); gap: 6px; }
}