/* Pocket journal. All existing desktop component styles remain in app.css. */
.mobile-bottom-nav,
.mobile-practice-strip,
.mobile-popover-close { display: none; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 1000; padding: 12px 16px; color: var(--paper); background: var(--ink); transform: translateY(-200%); }
.skip-link:focus { transform: none; }

@media (max-width: 768px) {
  html { scroll-padding-bottom: calc(6rem + env(safe-area-inset-bottom, 0px)); }
  body { --control-height: 48px; padding: 0; }
  .site-wrapper { width: 100%; max-width: 42rem; padding: 0 20px calc(5.5rem + env(safe-area-inset-bottom, 0px)); min-height: 100svh; }
  /* The desktop paper bleeds beyond its column; a phone has no outer gutter. */
  .site-wrapper::after { inset: 0; border: 0; }
  .site-wrapper::before { opacity: 0.16; }
  #page-content { min-width: 0; outline: none; }
  :where(button, a, input, select, summary, textarea) { touch-action: manipulation; }
  :where(button, a, input, select, summary, textarea):focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
  input, select, textarea { font-size: 16px; }
  .btn, .masthead-pill { min-height: 48px; line-height: 1.35; white-space: normal; letter-spacing: 0.07em; }

  /* Compact masthead: the brand, level and menu share two deliberate rows. */
  .masthead { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 8px; row-gap: 0; padding: 16px 0 10px; text-align: left; align-items: center; }
  .masthead-title { grid-column: 1; grid-row: 1; font-size: clamp(1.4rem, 5.8vw, 2rem); letter-spacing: -0.035em; line-height: 1.1; }
  .masthead-title a { display: inline-flex; align-items: center; min-height: 44px; max-width: none; }
  .masthead-tagline { grid-column: 1; grid-row: 2; margin: 0; font-size: 9px; letter-spacing: 0.09em; max-width: 24ch; }
  .masthead-nivel { grid-column: 2; grid-row: 2; min-height: 44px; margin: 0; padding: 4px 0 4px 8px; border: 0; background: transparent; font-size: 10px; letter-spacing: 0.02em; color: var(--accent); justify-content: flex-end; }
  .masthead-bar { display: contents; }
  .masthead-edition { display: none; }
  .masthead-mobile-menu-toggle { display: inline-flex; grid-column: 2; grid-row: 1; min-width: 0; min-height: 44px; padding: 8px 12px; font-size: 10px; }
  .masthead-mobile-menu-panel { grid-column: 1 / -1; width: 100%; max-width: none; margin: 8px 0 0; padding: 16px; border: 1px solid var(--rule); border-top: 2px solid var(--accent); background: var(--surface); box-shadow: none; display: flex; flex-direction: column; gap: 12px; }
  .mobile-ui-ready .masthead-mobile-menu-panel { display: none; }
  .mobile-ui-ready .masthead-bar.mobile-menu-open .masthead-mobile-menu-panel { display: flex; }
  html:not(.mobile-ui-ready) .masthead-mobile-menu-toggle { display: none; }
  .masthead-mobile-menu-panel .masthead-bar-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: 8px; }
  .masthead-mobile-menu-panel .masthead-bar-extra { display: grid; width: 100%; gap: 8px; }
  .masthead-mobile-menu-panel .masthead-bar-extra:empty { display: none; }
  .masthead-mobile-menu-panel .masthead-pill { width: 100%; font-size: 11px; }
  .masthead-profile-pill { flex-wrap: wrap; }
  .masthead-profile-counts { letter-spacing: 0; }
  .masthead-icon-svg { animation: none; }
  .masthead-mobile-menu-panel :is(.masthead-info, .daily-challenge-menu) { width: 100%; margin-bottom: 0; }
  [data-masthead-side-panel-content] { width: min(100vw, 390px); padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px)); }
  .masthead-mobile-menu-panel .masthead-bar-extra:has(details[open]) { margin-bottom: 0; }
  .masthead-mobile-menu-panel .daily-challenge-menu-item { min-height: 44px; display: flex; align-items: center; white-space: normal; }
  .masthead + hr { margin: 0 0 20px; border-top: 2px solid var(--ink); }

  /* Thumb navigation is outside the paper's stacking context. */
  .mobile-bottom-nav { position: fixed; inset: auto 0 0; z-index: 500; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 0 max(8px, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(8px, env(safe-area-inset-left, 0px)); border-top: 1px solid var(--rule); background: var(--surface); }
  .mobile-bottom-nav a { position: relative; min-width: 0; min-height: 64px; padding: 9px 4px 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; color: var(--ink-muted); text-decoration: none; font-family: var(--font-meta); font-size: 10px; line-height: 1.2; letter-spacing: 0.04em; }
  .mobile-bottom-nav svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
  .mobile-bottom-nav a[aria-current] { color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }
  .mobile-bottom-nav a[aria-current]::before { content: ""; position: absolute; top: -1px; left: 24%; right: 24%; height: 2px; background: var(--accent); }
  .mobile-keyboard-open .mobile-bottom-nav { display: none; }
  .colophon { margin: 40px 0 0; padding: 20px 0; }
  .colophon p { font-size: 10px; letter-spacing: 0.05em; line-height: 2; overflow-wrap: anywhere; }
  .colophon a { display: inline-flex; align-items: center; min-height: 44px; }

  /* The practice strip is intentionally scrollable, not the document. */
  .mobile-practice-strip { display: flex; gap: 8px; max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; padding: 0 0 12px; margin: 0 0 8px; scrollbar-width: thin; scrollbar-color: var(--rule) transparent; }
  .mobile-practice-strip a { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border: 1px solid var(--rule); font-family: var(--font-meta); font-size: 11px; letter-spacing: 0.02em; text-decoration: none; background: var(--surface); }
  .mobile-practice-strip a[aria-current] { color: var(--accent); background: var(--paper); border-color: var(--ink); }
  .mobile-article-tools { display: block; max-width: 100%; margin: 24px 0; }
  .mobile-article-tools-toggle { display: flex; width: 100%; justify-content: space-between; min-height: 48px; background: transparent; border-color: var(--rule); }
  .mobile-article-tools-panel { display: block; width: 100%; max-width: none; }
  .mobile-ui-ready .mobile-article-tools-panel { display: none; }
  .mobile-ui-ready .article-tools-open .mobile-article-tools-panel { display: block; }
  html:not(.mobile-ui-ready) .mobile-article-tools-toggle { display: none; }
  .article-tools-open .mobile-article-tools-panel { padding: 12px; border: 1px solid var(--rule); border-top: 0; background: var(--surface); }
  .homepage-feed-controls { display: flex; flex-direction: column; align-items: stretch; width: 100%; max-width: none; gap: 12px; margin: 12px 0 0; }
  .homepage-feed-controls > a { display: none; } /* Same destinations remain in the thumb bar. */
  .homepage-search-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; max-width: none; width: 100%; gap: 8px; }
  .homepage-search-input { min-width: 0; width: 100%; max-width: none; font-size: 16px; letter-spacing: 0; min-height: 48px; }
  .source-filter, .source-filter-summary { min-width: 0; max-width: 100%; }
  .source-filter-summary { min-height: 48px; display: flex; align-items: center; justify-content: space-between; font-size: 11px; white-space: normal; }
  .source-filter .filter-row { position: static; width: 100%; min-width: 0; max-width: 100%; transform: none; }
  .filter-chip { width: 100%; min-height: 44px; white-space: normal; overflow-wrap: anywhere; }
  .date-divider { margin-top: 28px; margin-bottom: 20px; }
  .date-divider-label { font-size: 10px; letter-spacing: 0.06em; white-space: normal; }
  .article-item { padding-bottom: 24px; margin-bottom: 24px; }
  .article-section-label { margin-bottom: 8px; }
  .article-section-label .meta-accent { font-size: 10px; letter-spacing: 0.08em; }
  .article-headline, .article-headline.lead { font-size: clamp(1.5rem, 5.8vw, 1.9rem); line-height: 1.15; letter-spacing: -0.02em; text-wrap: pretty; }
  .article-deck, .article-deck.lead { font-size: 17px; line-height: 1.55; margin-top: 10px; }
  .article-byline { flex-wrap: wrap; gap: 4px 12px; margin-top: 12px; }
  .pagination-links { flex-wrap: wrap; gap: 12px; }

  /* Practice feels like a margin note, not boxes nested inside more boxes. */
  .daily-challenge { margin: 0 0 24px; padding: 18px 14px; border: 1px solid var(--rule); border-top: 3px solid var(--accent); background: var(--surface); }
  .daily-challenge-header { align-items: flex-start; gap: 8px; margin-bottom: 16px; }
  .daily-challenge-header > div { min-width: 0; }
  .daily-challenge-header .meta { font-size: 11px; letter-spacing: 0.08em; }
  .daily-challenge-dismiss { flex-shrink: 0; min-height: 44px; padding: 8px; font-size: 10px; letter-spacing: 0.02em; }
  .daily-challenge-grid, .reading-grid-progressive { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .daily-challenge-box { padding: 0; border: 0; background: transparent; min-width: 0; }
  .daily-challenge-box + .daily-challenge-box { padding-top: 14px; border-top: 1px solid var(--rule); }
  .daily-challenge-paragraph, .daily-challenge-solution { font-size: 18px; line-height: 1.6; }
  .daily-challenge-stats, .reading-inline-stats { display: flex; flex-wrap: nowrap; gap: 8px; }
  .daily-challenge-stat, .reading-inline-stat, .word-typing-item .reading-inline-stat { flex: 1; font-size: 11px; padding: 6px 10px; letter-spacing: 0.04em; text-align: center; }
  .daily-challenge-complete-row, .reading-inline-complete-row { flex-direction: column; gap: 12px; }
  .daily-challenge-input-shell, .reading-inline-input-shell { width: 100%; min-width: 0; min-height: 50px; border-radius: 0; }
  .daily-challenge-target-text, .daily-challenge-input, .reading-inline-target-text, .reading-inline-input { font-size: 16px; line-height: 1.5; padding-top: 12px; padding-bottom: 12px; }
  .daily-challenge-complete-btn, .reading-proceed-btn, .reading-complete-btn { width: 100%; min-height: 48px; }
  .daily-challenge-complete-btn:not(:disabled), .reading-proceed-btn:not(:disabled), .reading-complete-btn:not(:disabled) { color: var(--paper); background: var(--ink); border-color: var(--ink); }
  /* Match app.css hover specificity so the solid action keeps its contrast. */
  .daily-challenge-complete-btn:not(:disabled):hover, .reading-proceed-btn:not(:disabled):hover, .reading-complete-btn:not(:disabled):hover { color: var(--paper); background: var(--ink); border-color: var(--ink); }
  .daily-challenge-ghost-text, .reading-inline-ghost-text { opacity: 1; }
  .word-matching-grid, .reading-inline-match-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .word-match-source, .word-match-target { min-width: 0; min-height: 52px; padding: 10px 8px; font-size: 14px; line-height: 1.3; letter-spacing: 0; overflow-wrap: anywhere; white-space: normal; }
  .word-typing-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .word-typing-item { padding: 14px 12px; min-width: 0; }
  .word-typing-english { font-size: 20px; margin-bottom: 10px; }
  .wordle-input-section { display: grid; grid-template-columns: minmax(0, 1fr) auto; width: 100%; gap: 8px; }
  .wordle-input { width: 100%; min-width: 0; max-width: 100%; font-size: 16px; min-height: 48px; }
  .wordle-grid { max-width: 100%; }
  .wordle-cell { width: clamp(34px, 10vw, 48px); height: clamp(34px, 10vw, 48px); }
  .wordle-cell.wordle-absent { opacity: 1; color: var(--ink-muted); background: var(--highlight); }
  .daily-flashcard-card, .article-final-flashcard-card { min-height: 190px; padding: 20px 16px; display: flex; flex-direction: column; justify-content: center; }
  .daily-flashcard-actions, .article-final-flashcard-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .daily-flashcard-actions .btn, .article-final-flashcard-actions .btn { min-width: 0; width: 100%; }

  /* Continuous reader: primary text first, optional help in the margin. */
  .article-top-row { gap: 12px; margin-bottom: 20px; }
  .article-header { margin-bottom: 20px; }
  .article-title { font-size: clamp(2rem, 8vw, 3rem); line-height: 1.08; letter-spacing: -0.035em; }
  .article-deck-detail { font-size: 18px; line-height: 1.55; margin-top: 16px; }
  .article-byline-detail { margin-top: 16px; flex-wrap: wrap; gap: 4px 12px; }
  .article-toolbar { margin-bottom: 16px; }
  .article-toolbar-actions { display: none; } /* Accessible from the fixed navigation. */
  .article-toolbar .frequent-words { width: 100%; }
  .frequent-words-summary, .frequent-word { min-height: 44px; }
  hr.ornamental { margin: 24px 0; }
  .level-select { margin: 24px 0; }
  .level-select-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .level-select-card { min-width: 0; min-height: 76px; padding: 14px 8px; gap: 6px; }
  .level-select-label { font-size: 11px; white-space: normal; letter-spacing: 0.04em; }
  .reading-wait-shell { margin: 20px 0 28px; padding: 18px 14px; }
  .reading-wait-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .reading-wait-book { width: min(12rem, 68vw); justify-self: center; grid-row: 1; }
  .reading-wait-copy { grid-row: 2; text-align: left; }
  .reading-wait-copy h2 { font-size: 30px; }
  .reading-wait-challenge .daily-challenge { margin: 0; padding-inline: 0; border-inline: 0; }
  .reading-wait-actions { justify-content: stretch; }
  .reading-wait-cycle { width: 100%; }
  .reading-wait-ready-slot { width: 100%; }
  .reading-wait-ready-button { width: 100%; }
  .reading-segment { margin-bottom: 28px; padding-bottom: 24px; }
  .reading-spanish-paragraph, .article-body p { font-size: 20px; line-height: 1.75; text-align: justify; hyphens: auto; overflow-wrap: break-word; }
  .reading-paragraph-header { gap: 12px; margin-bottom: 8px; }
  .audio-play-btn { min-width: 44px; min-height: 44px; }
  .reading-col-translation { padding: 14px; border: 1px solid var(--rule); border-left: 2px solid var(--accent); background: color-mix(in srgb, var(--surface) 65%, transparent); }
  .reading-col-translation p { font-size: 18px; line-height: 1.6; }
  .reading-blurred { max-height: 3.2rem; overflow: hidden; }
  .reading-reveal-btn { min-height: 44px; }
  .reading-inline-challenge { padding: 16px 14px; margin-top: 20px; background: var(--surface); border: 1px solid var(--rule); border-top: 2px solid var(--accent); }
  .reading-proceed-section, .reading-complete-section { margin-top: 16px; }

  /* Touch annotation panel: stays in the original DOM for save/tip handlers. */
  .popover { position: fixed; top: auto; left: 12px !important; right: 12px; bottom: calc(76px + env(safe-area-inset-bottom, 0px) + var(--mobile-keyboard-inset, 0px)); width: auto; max-width: none; max-height: min(48dvh, 25rem); overflow-y: auto; padding: 20px; border: 1px solid var(--rule); border-top: 3px solid var(--accent); background: var(--surface); box-shadow: none; text-align: left; z-index: 400; }
  .popover::before, .popover::after { display: none; }
  .popover-gloss { font-size: 24px; line-height: 1.3; padding-right: 36px; }
  .popover-phonetic { font-size: 17px; }
  .mobile-popover-close { display: flex; position: absolute; top: 8px; right: 8px; align-items: center; justify-content: center; width: 44px; height: 44px; background: transparent; border: 0; color: var(--ink); font-size: 24px; cursor: pointer; }
  .highlight-orb-row { gap: 14px; padding-top: 4px; }
  .highlight-orb { width: 44px; height: 44px; min-width: 44px; border-width: 8px; border-color: var(--surface); outline: 1px solid var(--rule); outline-offset: 0; }
  .highlight-orb.is-active { outline: 2px solid var(--ink); outline-offset: 2px; }
  .mobile-keyboard-open .popover { bottom: calc(12px + var(--mobile-keyboard-inset, 0px)); }

  /* Personal library: readable entries, not a squeezed desktop index. */
  .vocab-header { align-items: stretch; flex-direction: column; gap: 16px; margin: 24px 0 20px; padding-bottom: 16px; }
  .vocab-header h2 { font-family: var(--font-display); font-size: 32px !important; line-height: 1.1; letter-spacing: -0.02em; text-transform: none; }
  .vocab-toggle { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
  .vocab-toggle .sep { display: none; }
  .vocab-toggle a, .vocab-select-btn { display: inline-flex; min-height: 44px; align-items: center; padding: 8px 12px; border: 1px solid var(--rule); font-size: 11px; letter-spacing: 0.04em; }
  .vocab-toggle a.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
  .vocab-index { columns: 1; column-gap: 0; }
  .vocab-index-entry { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; padding: 16px 0; }
  .vocab-index-entry .vocab-word { flex: 1 1 45%; }
  .vocab-index-entry .vocab-gloss { flex: 1 1 40%; }
  .vocab-entry { padding: 16px 0; }
  .vocab-entry-text { min-width: 0; }
  .vocab-word { font-size: 22px; overflow-wrap: anywhere; }
  .vocab-gloss { font-size: 18px; margin-left: 0; overflow-wrap: anywhere; }
  .vocab-entry-text .vocab-gloss { display: block; margin-top: 2px; }
  .vocab-sentence { font-size: 17px; line-height: 1.55; }
  .vocab-source-link { display: inline-flex; min-height: 44px; align-items: center; }
  .vocab-checkbox { width: 44px; height: 44px; min-width: 44px; }
  .bulk-action-row, .bulk-action-right, .bulk-confirm-row { flex-wrap: wrap; gap: 8px 12px; }
  .bulk-confirm-row > span:first-child { flex-basis: 100%; }
  .bulk-action-quitar, .bulk-confirm-btn { min-height: 44px; padding: 8px; line-height: 1.4; }
  .saved-article-item { align-items: flex-start; flex-direction: column; gap: 12px; padding: 20px 0; }
  .saved-article-title { font-size: 24px; line-height: 1.2; overflow-wrap: anywhere; }
  .saved-article-remove, .saved-article-recover { min-height: 44px; padding: 8px 12px; border: 1px solid var(--rule); line-height: 1.3; }
  .saved-article-recover-row { flex-wrap: wrap; gap: 12px; }
  .flashcard-custom-word { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; min-height: 52px; }
  .flashcard-custom-word input { grid-row: span 2; width: 24px; height: 24px; }
  .flashcard-custom-gloss { grid-column: 2; }
  .vocab-flashcards-header, .flashcard-setup { padding: 16px; }

  /* Settings and account pages share the same calm, compact rhythm. */
  .settings-page, .pricing-page, .account-page, .auth-page { margin: 20px 0 32px; }
  .settings-hero { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 24px 0; }
  .settings-hero h1 { font-size: 44px; line-height: 1; max-width: none; }
  .settings-kicker { margin-bottom: 12px; font-size: 10px; }
  .settings-hero-deck { margin-top: 14px; font-size: 17px; }
  .settings-hero-mark { display: none; }
  .settings-form { margin-top: 24px; }
  .settings-card-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .settings-card { min-width: 0; padding: 18px 14px; gap: 12px; }
  .settings-card-number { writing-mode: horizontal-tb; }
  .settings-card-featured { grid-row: auto; }
  .settings-card-desc, .settings-panel-desc { font-size: 17px; }
  .settings-select { min-width: 0; font-size: 16px; min-height: 52px; letter-spacing: 0; text-transform: none; }
  .settings-sources-panel { flex-direction: column; align-items: stretch; padding: 18px 14px; }
  .settings-refresh-actions { width: 100%; justify-content: flex-start; }
  .settings-save-button, .settings-refresh-button, .settings-feedback-button { width: 100%; min-height: 48px; }
  .settings-feedback-form textarea { font-size: 16px; }
  .pricing-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .pricing-card { padding: 24px 20px; min-width: 0; }
  .pricing-card .btn, .account-page .btn, .account-page form { width: 100%; }
  .account-card { display: block; padding: 20px 16px; }
  .account-card p { overflow-wrap: anywhere; }
  .plan-badge { max-width: 100%; white-space: normal; margin-top: 12px; }
  .upgrade-prompt { padding: 20px 16px; }
  .upgrade-prompt h2 { padding-right: 32px; }
  .upgrade-prompt-close { min-width: 44px; min-height: 44px; top: 4px; right: 4px; }
  .upgrade-prompt-actions { align-items: stretch; flex-direction: column; gap: 12px; }
  .upgrade-prompt-actions .btn { width: 100%; }
  .auth-card { gap: 20px; padding: 24px 0; }
  .auth-card-intro { padding: 0; }
  .auth-card h2 { font-size: 44px; line-height: 1; }
  .auth-deck { font-size: 18px; }
  .auth-rule { margin: 20px 0 0; }
  .auth-journal { height: 5rem; }
  .auth-form-panel { padding: 20px 16px; min-width: 0; }
  .auth-field input { min-height: 50px; font-size: 18px; }
  .auth-switch { line-height: 1.6; }
  .auth-switch a { display: inline-flex; min-height: 44px; align-items: center; }
}

@media (max-width: 359px) {
  .site-wrapper { padding-inline: 14px; }
  .masthead-title { font-size: 1.3rem; }
  .masthead-tagline { font-size: 8px; }
  .daily-challenge { padding-inline: 12px; }
}

@media (max-width: 768px) and (prefers-reduced-motion: reduce) {
  .masthead-mobile-menu-chevron, .mobile-article-tools-chevron { transition: none; }
  .daily-challenge-typing-caret, .reading-inline-typing-caret { animation: none; }
}