/* Interfaccia progressiva delle lezioni di Manzoni, allineata a Foscolo. */

:root {
  --study-topbar-h: 4.25rem;
  --study-bottom-h: 4rem;
}

body.manzoni-focus-active .reading-tools,
body.manzoni-focus-active .reading-progress,
body.manzoni-focus-active .study-actions > [data-theme],
body.manzoni-focus-active .study-actions > [data-font],
body.manzoni-focus-active .study-bottombar > [data-learning],
body.manzoni-focus-active .notebook-actions,
body.manzoni-focus-active .mobile-study-tabs,
body.manzoni-focus-active .visual-panel > .context-image,
body.manzoni-focus-active .visual-panel > .context-caption,
body.manzoni-focus-active .visual-panel > .visual-choices {
  display: none !important;
}

.focus-appearance-popover[hidden],
.focus-selection-tools[hidden] {
  display: none !important;
}

body.study-mode.manzoni-focus-active {
  height: 100svh;
  overflow: hidden;
  color: var(--text);
  background: #061d2f;
}

body.manzoni-focus-active .site-header.study-topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) minmax(15rem, 2fr) minmax(8rem, 1fr);
  grid-template-rows: 1fr;
  gap: 1rem;
  width: 100%;
  min-height: var(--study-topbar-h);
  height: var(--study-topbar-h);
  padding: calc(.55rem + env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) .55rem max(1rem, env(safe-area-inset-left));
  border-bottom: 0;
  background: rgba(6, 29, 47, .985);
}

body.manzoni-focus-active .study-home {
  justify-self: start;
  min-height: 44px;
  padding: 0;
  color: var(--gold-soft);
  border: 0;
  border-radius: 0;
  background: transparent;
  font-weight: 700;
}

body.manzoni-focus-active .study-heading span {
  margin-bottom: .18rem;
  color: var(--gold-soft);
  font: 700 .7rem/1.15 system-ui, sans-serif;
  letter-spacing: .09em;
}

body.manzoni-focus-active .study-heading h1 {
  margin: 0;
  color: var(--paper-2);
  font-size: clamp(1rem, 2vw, 1.28rem);
  font-weight: 500;
  line-height: 1.12;
}

body.manzoni-focus-active .study-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: .4rem;
}

body.manzoni-focus-active .study-actions button,
.focus-appearance-trigger {
  min-height: 44px;
  padding: .5rem .75rem;
  color: var(--paper-2);
  border: 1px solid rgba(201, 145, 69, .72);
  border-radius: .45rem;
  background: #0b2e47;
  font: 700 .88rem/1.1 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

.focus-appearance-control {
  position: relative;
}

.focus-appearance-trigger {
  min-width: 44px;
  font-size: 1rem !important;
}

.focus-appearance-popover {
  position: absolute;
  top: calc(100% + .45rem);
  right: 0;
  z-index: 1100;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .35rem;
  width: 13.5rem;
  padding: .55rem;
  border: 1px solid var(--gold);
  border-radius: .55rem;
  color: var(--paper-2);
  background: rgba(6, 29, 47, .99);
  box-shadow: 0 16px 36px rgba(0, 0, 0, .32);
}

.focus-appearance-popover button {
  min-height: 44px;
  padding: .55rem;
  border: 1px solid rgba(201, 145, 69, .72);
  border-radius: .42rem;
  color: var(--paper-2);
  background: #0b2e47;
  font: 700 .82rem/1.15 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

body.manzoni-focus-active .lesson-shell {
  position: fixed;
  inset: var(--study-topbar-h) 0 var(--study-bottom-h);
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(0, 2.35fr) minmax(330px, .95fr);
  gap: .9rem;
  align-items: stretch;
  width: min(1440px, calc(100% - 1.25rem));
  max-width: none;
  height: auto;
  margin: 0 auto;
  padding: .7rem 0;
  overflow: hidden;
  background: #061d2f;
}

body.manzoni-focus-active .lesson-article {
  min-width: 0;
  min-height: 0;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--text);
  border: 1px solid var(--gold);
  border-radius: .45rem;
  background:
    linear-gradient(rgba(255, 246, 223, .96), rgba(243, 228, 199, .98)),
    radial-gradient(circle at 10% 5%, rgba(201, 145, 69, .16), transparent 28%);
  box-shadow: var(--shadow);
  scrollbar-color: var(--gold) rgba(95, 82, 63, .12);
  scrollbar-width: thin;
  scroll-padding-top: 1.5rem;
}

body.manzoni-focus-active .reading-source {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: clamp(1.15rem, 3vw, 2rem);
  color: var(--text);
  font-size: 1rem;
  line-height: normal;
}

html[data-focus-font="large"] body.manzoni-focus-active .reading-source {
  font-size: 1.1rem;
}

html[data-focus-font="xlarge"] body.manzoni-focus-active .reading-source {
  font-size: 1.2rem;
}

body.manzoni-focus-active .reading-source > h1 {
  margin: 0 0 .4rem;
  color: var(--ink);
  font-size: clamp(2.1rem, 5vw, 3.8rem);
  font-weight: 500;
  line-height: 1;
}

body.manzoni-focus-active .reading-source h2,
body.manzoni-focus-active .reading-source h3 {
  color: #173750;
  scroll-margin-top: 1.5rem;
}

body.manzoni-focus-active .reading-source p,
body.manzoni-focus-active .reading-source li,
body.manzoni-focus-active .reading-source td,
body.manzoni-focus-active .reading-source th {
  color: var(--text);
  font-size: 1.05em;
  line-height: 1.72;
}

body.manzoni-focus-active .lesson-brief,
body.manzoni-focus-active .lesson-note,
body.manzoni-focus-active .callout {
  color: var(--text);
  background: rgba(255, 255, 255, .38);
}

body.manzoni-focus-active .lesson-sidebar {
  position: static;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  min-width: 0;
  min-height: 0;
  height: 100%;
  max-height: none;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--gold);
  border-radius: .6rem;
  background: rgba(6, 29, 47, .96);
  box-shadow: var(--shadow);
}

.focus-panel-tabs {
  position: relative;
  z-index: 6;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .3rem;
  padding: .42rem;
  border-bottom: 1px solid rgba(201, 145, 69, .42);
  background: rgba(6, 29, 47, .99);
}

.focus-panel-tabs button {
  min-height: 44px;
  padding: .55rem .65rem;
  border: 1px solid transparent;
  border-radius: .42rem;
  color: #eed2a2;
  background: transparent;
  font: 700 .9rem/1.1 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

.focus-panel-tabs button[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--gold);
  background: linear-gradient(180deg, var(--paper-2), #e9c98d);
}

body.manzoni-focus-active .lesson-sidebar[data-focus-panel="visual"] .notebook-panel,
body.manzoni-focus-active .lesson-sidebar[data-focus-panel="notes"] .visual-panel {
  display: none !important;
}

body.manzoni-focus-active .visual-panel,
body.manzoni-focus-active .notebook-panel {
  min-height: 0;
  height: 100%;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body.manzoni-focus-active .visual-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  padding: 0;
  overflow: hidden;
  color: var(--paper-2);
  background: rgba(8, 42, 65, .96);
}

body.manzoni-focus-active .visual-panel > header {
  display: block;
  margin: 0;
  padding: .72rem .82rem;
  color: var(--paper-2);
  background: rgba(6, 29, 47, .98);
}

body.manzoni-focus-active .visual-panel > header p {
  margin: 0 0 .15rem;
  color: #eed2a2;
  font: 700 .68rem/1.2 system-ui, sans-serif;
  letter-spacing: .08em;
}

body.manzoni-focus-active .visual-panel > header h2 {
  margin: 0;
  color: var(--paper-2);
  font-size: 1.18rem;
  font-weight: 500;
}

.focus-visual-stage {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: .65rem;
  scroll-behavior: smooth;
  scrollbar-color: var(--gold) rgba(255, 246, 223, .12);
  scrollbar-width: thin;
}

.focus-visual-card {
  margin: 0 0 .7rem;
  overflow: hidden;
  border: 1px solid var(--gold);
  border-radius: .5rem;
  color: var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.focus-visual-card:last-child {
  margin-bottom: 0;
}

.focus-visual-card button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #071b2d;
  cursor: zoom-in;
}

.focus-visual-card button::after {
  position: absolute;
  right: .55rem;
  bottom: .55rem;
  content: "Apri e ingrandisci";
  padding: .42rem .55rem;
  border: 1px solid rgba(255, 246, 223, .75);
  border-radius: 999px;
  color: var(--paper-2);
  background: rgba(6, 29, 47, .9);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .28);
  font: 700 .7rem/1 Georgia, "Times New Roman", serif;
  pointer-events: none;
}

.focus-visual-card img {
  display: block;
  width: 100%;
  max-height: 25rem;
  object-fit: contain;
  background: #071b2d;
}

.focus-visual-card figcaption {
  padding: .65rem .75rem;
  color: var(--ink);
  font-size: .82rem;
  line-height: 1.3;
}

body.manzoni-focus-active .notebook-panel {
  display: block;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 .72rem .8rem;
  color: var(--ink);
  background: linear-gradient(180deg, #fff6df, #f3e4c7);
  scrollbar-color: var(--gold) rgba(95, 82, 63, .14);
  scrollbar-width: thin;
}

body.manzoni-focus-active .notebook-panel > header {
  position: sticky;
  top: 0;
  z-index: 4;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  margin: 0 -.72rem .65rem;
  padding: .72rem .82rem;
  color: var(--paper-2);
  border-bottom: 1px solid rgba(201, 145, 69, .42);
  background: rgba(6, 29, 47, .98);
}

body.manzoni-focus-active .notebook-panel > header p,
body.manzoni-focus-active .notebook-panel > header span {
  color: #eed2a2;
}

body.manzoni-focus-active .notebook-panel > header h2 {
  color: var(--paper-2);
}

.focus-selection-tools {
  position: fixed;
  left: 50%;
  bottom: calc(var(--study-bottom-h) + .75rem);
  z-index: 1015;
  display: flex;
  gap: .4rem;
  padding: .42rem;
  border: 1px solid var(--gold);
  border-radius: .6rem;
  background: rgba(6, 29, 47, .98);
  box-shadow: 0 16px 34px rgba(0, 0, 0, .34);
  transform: translateX(-50%);
}

.focus-selection-tools button {
  min-height: 44px;
  padding: .62rem .78rem;
  border: 1px solid rgba(201, 145, 69, .72);
  border-radius: .42rem;
  color: var(--ink);
  background: linear-gradient(180deg, var(--paper-2), #e9c98d);
  font: 700 .82rem/1.1 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

.focus-note-tools {
  position: sticky;
  bottom: -.8rem;
  z-index: 5;
  margin: .8rem -.72rem -.8rem;
  padding: .58rem .72rem calc(.58rem + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(95, 82, 63, .28);
  background: rgba(243, 228, 199, .98);
}

.focus-note-tools summary {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .55rem .7rem;
  border: 1px solid rgba(95, 82, 63, .38);
  border-radius: .42rem;
  color: var(--ink);
  background: rgba(255, 255, 255, .48);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.focus-note-tools summary::-webkit-details-marker {
  display: none;
}

.focus-note-menu {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .42rem;
  margin-top: .5rem;
}

.focus-note-menu button {
  min-height: 44px;
  padding: .55rem;
  border: 1px solid rgba(95, 82, 63, .38);
  border-radius: .42rem;
  color: var(--paper-2);
  background: var(--ink);
  font: 700 .76rem/1.15 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

.focus-note-menu button.danger {
  background: #612114;
}

.focus-note-menu button:disabled {
  opacity: .48;
  cursor: not-allowed;
}

body.manzoni-focus-active .site-footer.study-bottombar {
  position: fixed;
  inset: auto 0 0;
  z-index: 1000;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) auto;
  align-items: center;
  gap: .5rem;
  width: 100%;
  min-height: var(--study-bottom-h);
  height: var(--study-bottom-h);
  margin: 0;
  padding: .55rem max(1rem, env(safe-area-inset-right)) calc(.55rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  border-top: 1px solid var(--line);
  background: rgba(6, 29, 47, .99);
}

.focus-reading-progress {
  display: grid;
  grid-template-columns: auto minmax(4rem, 1fr);
  align-items: center;
  gap: .55rem;
  min-width: 0;
  color: var(--gold-soft);
}

.focus-reading-progress span {
  display: grid;
  line-height: 1;
}

.focus-reading-progress strong {
  font-size: .82rem;
}

.focus-reading-progress small {
  margin-top: .15rem;
  color: rgba(255, 246, 223, .72);
  font-size: .58rem;
  font-weight: 400;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.focus-reading-progress i {
  display: block;
  height: .38rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 246, 223, .18);
}

.focus-reading-progress b {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--gold-soft);
}

.focus-dock-actions {
  display: grid;
  grid-template-columns: auto;
  gap: .4rem;
}

body.manzoni-focus-active .focus-dock-actions button {
  min-width: 11rem;
  min-height: 44px;
  padding: .55rem .8rem;
  border: 1px solid var(--gold);
  border-radius: .42rem;
  color: var(--ink);
  background: linear-gradient(180deg, var(--paper-2), #e9c98d);
  font: 700 .88rem/1.1 Georgia, "Times New Roman", serif;
  cursor: pointer;
}

.focus-mobile-panel-button {
  display: none;
}

.focus-learning-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .42rem;
  margin-top: .85rem;
  clear: both;
}

.focus-learning-tabs button {
  min-height: 44px;
  color: var(--ink);
  background: rgba(255, 255, 255, .42);
}

.focus-learning-tabs button[aria-selected="true"] {
  color: var(--paper-2);
  background: var(--ink);
}

@media (max-width: 1080px) and (min-width: 821px) {
  body.manzoni-focus-active .lesson-shell {
    grid-template-columns: minmax(0, 2fr) minmax(310px, .9fr);
  }
}

@media (max-width: 820px) {
  :root {
    --study-topbar-h: 4.65rem;
  }

  body.manzoni-focus-active .site-header.study-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-rows: 1fr;
    gap: .45rem;
    padding-bottom: .5rem;
  }

  body.manzoni-focus-active .study-home span,
  body.manzoni-focus-active .focus-panel-tabs {
    display: none;
  }

  body.manzoni-focus-active .lesson-shell {
    display: block;
    width: 100%;
    padding: 0;
  }

  body.manzoni-focus-active .lesson-article {
    border: 0;
    border-radius: 0;
  }

  body.manzoni-focus-active .lesson-sidebar {
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="read"] .lesson-sidebar,
  body.manzoni-focus-active .lesson-shell[data-mobile-panel="visual"] .lesson-article,
  body.manzoni-focus-active .lesson-shell[data-mobile-panel="notes"] .lesson-article {
    display: none !important;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="read"] .lesson-article {
    display: block;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="visual"] .lesson-sidebar,
  body.manzoni-focus-active .lesson-shell[data-mobile-panel="notes"] .lesson-sidebar {
    display: grid;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="visual"] .notebook-panel,
  body.manzoni-focus-active .lesson-shell[data-mobile-panel="notes"] .visual-panel {
    display: none !important;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="visual"] .visual-panel {
    display: grid !important;
  }

  body.manzoni-focus-active .lesson-shell[data-mobile-panel="notes"] .notebook-panel {
    display: block !important;
  }

  body.manzoni-focus-active .site-footer.study-bottombar {
    grid-template-columns: 1fr;
    padding: .42rem max(.42rem, env(safe-area-inset-right)) calc(.42rem + env(safe-area-inset-bottom)) max(.42rem, env(safe-area-inset-left));
  }

  .focus-reading-progress {
    display: none;
  }

  .focus-dock-actions {
    grid-template-columns: repeat(3, 1fr);
  }

  body.manzoni-focus-active .focus-dock-actions button,
  .focus-mobile-panel-button {
    display: block;
    min-width: 0;
    padding: .55rem .35rem;
    font-size: .76rem;
  }

  body.manzoni-focus-active .focus-dock-actions button[aria-pressed="true"] {
    color: var(--paper-2);
    background: #0b2e47;
  }

  .focus-selection-tools {
    right: .45rem;
    bottom: calc(var(--study-bottom-h) + .5rem);
    left: .45rem;
    justify-content: stretch;
    transform: none;
  }

  .focus-selection-tools button {
    flex: 1 1 0;
    padding-right: .45rem;
    padding-left: .45rem;
    font-size: .75rem;
  }
}

@media (max-width: 520px) {
  .focus-appearance-popover {
    right: -3.3rem;
    width: 12.5rem;
  }

  .focus-learning-tabs,
  .focus-note-menu {
    grid-template-columns: 1fr;
  }
}