/* Keep the lesson, resources and transcript together after removing the
   manual note/word-entry sidebar. The modifier overrides old grid breakpoints. */
.study-shell.study-reading {
  grid-template-columns: minmax(0, 1fr);
  max-width: 980px;
  margin-inline: auto;
}

.study-reading .study-header h1 .tt-en { display: block; }
.study-reading .study-header h1 .tt-zh {
  display: block;
  margin: 8px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.45;
  font-weight: 500;
  color: var(--muted);
}
.study-reading .study-header h1 .tt-zh::before { content: none; display: none; }

.series-hero[data-series-id="bbc-world-service"] {
  background: linear-gradient(140deg,
    color-mix(in srgb, var(--series-color) 12%, var(--paper)),
    color-mix(in srgb, var(--series-to, var(--series-color)) 9%, var(--surface)));
}

@media (max-width: 820px), (max-width: 1100px) and (pointer: coarse) {
  /* The former page-action slot removed the right inset for signed-in users. */
  .series-hero, .series-hero.has-mobile-page-actions {
    gap: 20px;
    padding: 18px;
  }
  .series-hero-art {
    width: 100%;
    min-width: 0;
    min-height: 0;
    align-self: center;
    aspect-ratio: 16 / 9;
    border-radius: 16px;
  }
  .series-hero-art img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .series-hero-art:has(img)::after { display: none; }
  .series-hero-content { min-width: 0; }
}

@media (max-width: 820px) {
  .series-hero { grid-template-columns: minmax(0, 1fr); }
}

.reader-vocabulary { margin: 0 0 16px; }
.reader-vocabulary-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.reader-vocabulary-heading h2 { margin: 0; font-size: 14px; line-height: 1.5; font-weight: 600; color: var(--muted); }
.reader-word-translation { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--muted); font: inherit; font-size: 12px; cursor: pointer; }
.reader-word-translation svg { width: 17px; height: 17px; }
.reader-word-translation[aria-pressed="true"] { border-color: color-mix(in srgb, var(--teal-deep) 45%, var(--line)); color: var(--teal-deep); background: color-mix(in srgb, var(--teal-deep) 8%, var(--surface)); }
.reader-word-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); align-items: start; gap: 10px; }
.reader-word-card { --word-accent: var(--word-tone); min-width: 0; padding: 0 14px; border: 1px solid color-mix(in srgb, var(--word-accent) 22%, var(--surface)); border-radius: 18px; background: color-mix(in srgb, var(--word-accent) 4.5%, var(--surface)); transition: background-color 160ms, border-color 160ms; }
:where(html[data-theme="dark"]) .reader-word-card { --word-accent: var(--word-tone-dark); }
.reader-word-card.is-expanded { border-color: color-mix(in srgb, var(--word-accent) 55%, var(--surface)); background: color-mix(in srgb, var(--word-accent) 9%, var(--surface)); }
.reader-word-heading { display: flex; align-items: center; gap: 2px; }
.reader-word-toggle { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; min-height: 60px; padding: 12px 0; border: 0; background: transparent; color: var(--ink); text-align: start; font: inherit; cursor: pointer; }
.reader-word-index { display: grid; place-items: center; flex: none; width: 32px; height: 32px; border-radius: 11px; background: color-mix(in srgb, var(--word-accent) 12%, transparent); color: var(--word-accent); font-size: 11px; font-weight: 700; }
.reader-word-toggle strong { flex: 1; min-width: 0; font-size: 18px; line-height: 1.4; overflow-wrap: anywhere; }
.reader-word-chevron { flex: none; width: 18px; height: 18px; color: var(--muted); transform: rotate(90deg); }
.is-expanded .reader-word-chevron { transform: rotate(-90deg); }
.reader-word-heading .reader-word-save { flex: none; width: 44px; height: 44px; min-width: 44px; padding: 10px; border: 0; border-radius: 12px; background: transparent; box-shadow: none; color: var(--muted); }
.reader-word-save.is-saved, .reader-word-save:disabled { opacity: 1; color: var(--word-accent); }
.reader-word-save.is-saved svg { fill: currentColor; }
.reader-word-meaning { display: grid; gap: 6px; padding-bottom: 14px; }
.reader-word-meaning small { color: var(--muted); font-size: 12px; }
.reader-word-card p { margin: 0; font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.reader-word-definition { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; color: var(--ink); }
.is-expanded .reader-word-definition { display: block; }
.reader-word-card .reader-word-zh { display: none; color: var(--word-accent); font-size: 13px; }
.reader-words-show-zh .reader-word-zh { display: block; }
.reader-word-examples { display: grid; gap: 10px; padding-bottom: 14px; }
.reader-word-examples[hidden] { display: none; }
.reader-word-example { padding: 12px; border-radius: 12px; background: color-mix(in srgb, var(--word-accent) 7%, transparent); }
.reader-word-example-label { display: flex; align-items: center; gap: 5px; margin-bottom: 6px; font-size: 11px; line-height: 1.5; color: var(--word-accent); }
.reader-word-example-label > span { height: 16px; font-size: 26px; line-height: 1; font-weight: 700; }
.reader-word-example p + p { margin-top: 6px; }
.reader-word-example mark { padding: 1px 2px; border-radius: 3px; background: color-mix(in srgb, var(--word-accent) 16%, transparent); color: inherit; font-weight: 650; }
.reader-word-example .learn-example-play { min-height: 44px; margin-top: 6px; color: var(--word-accent); }
.reader-word-example .learn-example-play::before { inset-block: 6px; border-color: color-mix(in srgb, var(--word-accent) 24%, var(--line)); background: color-mix(in srgb, var(--surface) 60%, transparent); }
.reader-word-unavailable { color: var(--muted); font-size: 12px !important; }
.reader-word-toggle:focus-visible, .reader-word-translation:focus-visible { outline: 2px solid var(--word-accent, var(--teal-deep)); outline-offset: 3px; border-radius: 10px; }
@media (prefers-reduced-motion: reduce) { .reader-word-card { transition: none; } }

.reader-panels, .reader-transcript-pane, .reader-notes-pane { display: contents; }
.reader-tab-bar, .reader-dock-action, .reader-vocabulary-empty,
.study-player.reader-video-controls { display: none; }

@media (max-width: 820px), (max-width: 1100px) and (pointer: coarse) {
  body.lesson-immersive { overflow: hidden; }
  body.lesson-immersive .topbar, body.lesson-immersive .mobile-nav,
  body.lesson-immersive #app-release-notice, body.lesson-immersive .app-shell > footer,
  body.lesson-immersive #mini-player, body.lesson-immersive #mini-player-chip { display: none !important; }
  body.lesson-immersive .app-shell { position: fixed; inset: 0; height: var(--reader-viewport-height, 100dvh); min-height: 0; overflow: hidden; background: var(--surface); }
  body.lesson-immersive #main { width: 100%; height: 100%; min-height: 0; margin: 0; padding: 0; overflow: hidden; }
  body.lesson-immersive #app { width: 100%; height: 100%; min-height: 0; margin: 0; padding: 0 !important; }
  body.lesson-immersive .study-shell.study-reading { display: block; width: 100%; max-width: none; height: 100%; padding-inline: env(safe-area-inset-left) env(safe-area-inset-right); }
  body.lesson-immersive .back-top { bottom: calc(var(--reader-dock-height, 64px) + 12px); }
  body.lesson-immersive #native-audio-player { bottom: calc(var(--reader-dock-height, 64px) + 12px); }
  body.lesson-immersive .toast-region, body.lesson-immersive.has-mini-player .toast-region { bottom: calc(var(--reader-dock-height, 64px) + var(--reader-native-height, 0px) + 24px); }
}

/* Keep the desktop reading shortcut just outside the centered content column. */
@media (min-width: 1200px) {
  body:has(.study-shell.study-reading) .back-top {
    right: max(22px, calc((100vw - 980px) / 2 - 60px));
  }

  body:has(.guided-page) .back-top {
    right: max(22px, calc((100vw - 820px) / 2 - 60px));
  }
}

/* Share the first phone row between navigation and actions, keeping all touch
   targets intact. Wider layouts retain the existing badge/action arrangement. */
@media (max-width: 560px) {
  #app:has(.study-shell.study-reading) { padding-top: 12px; }

  .study-reading .study-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 4px 8px;
    margin-bottom: 16px;
  }

  .study-reading .study-header > .back-link {
    grid-area: 1 / 1;
    min-width: 0;
    min-height: 44px;
    margin: 0;
  }

  .study-reading .study-header-top { display: contents; }

  .study-reading .study-header-top > .lesson-actions {
    grid-area: 1 / 2;
    gap: 0;
    padding: 0;
    border: 0;
  }

  .study-reading .study-header-top > .level-badge {
    grid-area: 2 / 1 / auto / -1;
    justify-self: start;
    max-width: 100%;
    white-space: normal;
    line-height: 1.5;
  }

  .study-reading .study-header > h1,
  .study-reading .study-header > .study-meta,
  .study-reading .study-header > .lesson-summary { grid-column: 1 / -1; }

  .study-reading .study-header > h1 {
    min-width: 0;
    margin: 6px 0 4px;
    font-size: clamp(24px, 7vw, 28px);
    line-height: 1.2;
    overflow-wrap: anywhere;
  }

  .study-reading .study-header h1 .tt-zh {
    margin-top: 5px;
    font-size: 17px;
    line-height: 1.45;
  }

  .study-reading .study-meta { gap: 6px; }
  .study-reading .lesson-summary { margin-top: 8px; }
}

/* Shared reading surface: mobile lessons and the radio transcript dialog. */
.reader-app .study-main { display: flex; flex-direction: column; width: min(980px, 100%); height: 100%; min-height: 0; margin-inline: auto; gap: 0; }
.reader-app.lesson-reader-layout .study-header { flex: none; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 4px; padding: calc(4px + env(safe-area-inset-top)) 12px 8px; margin: 0; border-bottom: 1px solid var(--line); background: var(--paper); }
.reader-app .study-header > .back-link { grid-area: 1 / 1; align-self: center; display: flex; align-items: center; min-height: 44px; min-width: 0; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.reader-app .study-header-top { display: contents; }
.reader-app .study-header-top > .lesson-actions { grid-area: 1 / 2; display: flex; gap: 0; padding: 0; border: 0; }
.reader-app .lesson-actions .icon-button { width: 44px; height: 44px; padding: 10px; }
.reader-app .study-header .level-badge, .reader-app .study-header .study-meta,
.reader-app .study-header .lesson-summary { display: none; }
#app .reader-app.lesson-reader-layout .study-header > h1, .radio-transcript-modal.reader-app .study-header > h2 { grid-column: 1 / -1; margin: 4px 4px 0; font-size: 17px; line-height: 1.4; letter-spacing: -.02em; overflow-wrap: anywhere; }
#app .reader-app.lesson-reader-layout .study-header h1 .tt-zh, .radio-transcript-modal.reader-app .study-header h2 .tt-zh { display: block; margin-top: 3px; font-size: 13px; line-height: 1.4; font-weight: 500; color: var(--muted); }
.reader-app .reader-tab-bar { position: relative; z-index: 25; flex: none; display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 44px; padding-inline: 16px 8px; border-bottom: 1px solid var(--line); }
.reader-tabs, .reader-tab-tools { display: flex; align-items: center; gap: 8px; }
.reader-tabs [role="tab"] { min-height: 44px; padding: 8px 12px; border: 0; border-radius: 0; background: transparent; color: var(--muted); font: inherit; font-size: 14px; font-weight: 600; box-shadow: inset 0 -2px transparent; }
.reader-tabs [aria-selected="true"] { color: var(--accent); box-shadow: inset 0 -2px var(--accent); }
.reader-tab-tools .transcript-reading-settings > summary { width: 44px; min-height: 44px; font-size: 22px; }
.reader-tab-tools .transcript-reading-settings-panel { top: calc(100% + 6px); bottom: auto; inset-inline-start: auto; inset-inline-end: 0; }
.reader-tab-tools .zh-toggle { gap: 5px; padding: 6px; border: 0; background: transparent; box-shadow: none; }
.reader-tab-tools .zh-toggle-label { font-size: 12px; }
.reader-notes-active .reader-tab-tools :is([data-zh-toggle], [data-radio-zh-toggle]) { display: none; }
.reader-app .reader-panels { flex: 1; min-height: 0; display: flex; flex-direction: column; overflow: hidden; }
.reader-app [data-reader-pane] { min-height: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; -webkit-overflow-scrolling: touch; }
.reader-app .reader-transcript-pane { display: block; height: 100%; padding: 16px; }
.reader-app .reader-notes-pane { display: none; height: 100%; padding: 0 16px 16px; }
.reader-notes-active .reader-transcript-pane { display: none; }
.reader-notes-active .reader-notes-pane { display: block; }
.reader-app .reader-transcript-pane > .transcript-card { min-height: 0; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.reader-app .reader-transcript-pane .transcript-tools, .reader-app .reader-transcript-pane .transcript-usage-hint { display: none; }
.reader-app .transcript-body { display: block; }
.reader-app #transcript { margin: 0; padding: 0; }
.reader-app .transcript-turn-body, .reader-app #transcript > p { font-size: calc(18px * var(--transcript-font-scale, 1)); line-height: 1.65; overflow-wrap: anywhere; }
.reader-app .transcript-turn { margin-bottom: 18px; }
.reader-app .transcript-turn-heading { font-size: 11px; color: var(--muted); }
.reader-app .transcript-turn-time { display: none; }
.reader-app .transcript-follow-rail { position: sticky; top: 0; height: 0; z-index: 4; }
.reader-app .transcript-follow-button { position: absolute; top: 0; right: 0; left: auto; }
.reader-app .reader-course-notes { display: none; }
.reader-app .reader-notes-pane { padding-top: 16px; }
.reader-app .reader-word-list { grid-template-columns: minmax(0, 1fr); }
.reader-app .reader-vocabulary-empty { display: block; padding: 16px 0; color: var(--muted); font-size: 14px; }
.reader-app .official-video-card { flex: none; max-height: 22dvh; margin: 0; border: 0; border-radius: 0; overflow: hidden; }
.reader-app .official-video-mount, .reader-app .official-video-poster { height: 22dvh; min-height: 80px; }
.reader-app .official-video-mount video { width: 100%; height: 100%; object-fit: contain; }
.reader-app .official-video-caption, .reader-app .official-video-card > .player-video-link { display: none; }
.reader-app .study-player, .reader-app .study-player.reader-video-controls { order: 10; flex: none; display: block; min-height: 0; margin: 0; padding: 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: var(--surface); color: var(--ink); box-shadow: none; overflow: visible; }
.reader-app .study-player > .player-video-link, .reader-app .study-player-art { display: none; }
.reader-app .study-player .study-player-controls { position: relative; display: flex; flex-direction: column; gap: 0; padding: 4px 8px calc(4px + env(safe-area-inset-bottom)); overflow: visible; }
.reader-app .study-player-buttons { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); align-items: center; gap: 0; width: 100%; margin: 0; }
.reader-app .study-player-buttons > button { justify-self: center; width: 48px; height: 48px; min-height: 48px; min-width: 0; margin: 0; padding: 0; }
.reader-app .study-player-buttons .round-play { background: var(--accent); color: white; box-shadow: none; }
.reader-app .study-player-buttons .icon-button { display: inline-flex; border: 0; background: transparent; color: var(--ink); box-shadow: none; }
.reader-app .reader-speed-menu { order: -2; display: block; justify-self: center; }
.reader-app .reader-speed-menu > summary { justify-content: center; gap: 3px; width: 48px; min-height: 48px; padding: 0; color: var(--ink); font-size: 12px; }
.reader-app .reader-speed-menu > summary svg { width: 12px; height: 12px; }
.reader-app .reader-speed-menu > div { z-index: 30; }
.reader-app .reader-rewind { order: -1; }
.reader-app .reader-forward { order: 1; }
.reader-app .reader-next { order: 2; }
.reader-app .study-player-buttons .reader-desktop-speed { display: none; }
.reader-app .reader-playback-details { display: grid; grid-template-columns: 40px minmax(0, 1fr) 40px; align-items: center; gap: 8px; order: -1; min-height: 36px; padding: 0 8px; }
.reader-app .study-progress { grid-area: 1 / 2; min-width: 0; margin: 0; }
.reader-app .study-progress .scrubber { appearance: none; -webkit-appearance: none; height: 36px; margin: 0; padding: 0; border: 0; background: transparent; }
.reader-app .scrubber::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: linear-gradient(to right, var(--accent) var(--reader-position, 0%), var(--line) var(--reader-position, 0%)); }
.reader-app .scrubber::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 14px; height: 14px; margin-top: -5px; border: 0; border-radius: 50%; background: var(--accent); }
.reader-app .scrubber::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line); }
.reader-app .scrubber::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--accent); }
.reader-app .scrubber::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: var(--accent); }
.reader-app .scrubber:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.reader-app .study-time { display: contents; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.reader-app .study-time > span:first-child { grid-area: 1 / 1; white-space: nowrap; }
.reader-app .study-time > span:last-child { grid-area: 1 / 3; text-align: end; white-space: nowrap; }
.reader-app .audio-unavailable { padding: 8px; font-size: 12px; }

.modal.radio-transcript-modal.reader-app { display: block; height: var(--visual-viewport-height, 100dvh); max-height: var(--visual-viewport-height, 100dvh); padding-inline: env(safe-area-inset-left) env(safe-area-inset-right); }
.radio-transcript-modal.reader-app .study-main { width: min(980px, 100%); }
.radio-transcript-modal.reader-app .study-header > .back-link { border: 0; background: transparent; text-align: start; cursor: pointer; }
.radio-transcript-modal.reader-app .study-player { width: 100%; }
.radio-transcript-modal.reader-app .radio-transcript-body { width: 100%; padding: 0; overflow: hidden; }
.radio-transcript-modal.reader-app .radio-transcript-scroll { width: 100%; height: 100%; margin: 0; padding: 16px; overflow-y: auto; }
.radio-transcript-modal.reader-app .radio-follow { right: 16px; }

body:has(.radio-transcript-modal.reader-app) .toast-region { bottom: calc(var(--reader-dock-height, 93px) + 24px); }

.reader-app .study-header .tt-zh::before { content: none; display: none; }