/* Interfaccia progressiva condivisa per le pagine-lezione di Storia. */

:root {
  --history-focus-header: 68px;
  --history-focus-dock: 64px;
  --history-ink: #061d2f;
  --history-ink-2: #0b2e47;
  --history-gold: #c99145;
  --history-gold-soft: #e0b36d;
  --history-paper: #f3e4c7;
  --history-paper-2: #fff6df;
  --history-red: #612114;
  --history-text: #17202a;
  --history-muted: #5f523f;
  --history-line: rgba(201, 145, 69, .45);
  --history-shadow: 0 18px 40px rgba(0, 0, 0, .25);
}

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

body.history-focus-active {
  height: 100svh;
  overflow: hidden;
  color: var(--history-text);
  background: var(--history-ink);
}

body.history-focus-active > .skip-link,
body.history-focus-active .app-header > .brand,
body.history-focus-active .app-header > .desktop-nav,
body.history-focus-active .app-header > .menu-toggle,
body.history-focus-active .app-header > #searchToggle,
body.history-focus-active .app-header > .install-button,
body.history-focus-active .topbar > .nav,
body.history-focus-active > .footer,
body.history-focus-active .breadcrumb,
body.history-focus-active #app > .btn[href="#lezioni"],
body.history-focus-active .lesson-tools,
body.history-focus-active .reader-tools,
body.history-focus-active > .notes-drawer,
body.history-focus-active .apparatus-grid:empty {
  display: none !important;
}

body.history-focus-active .app-header,
body.history-focus-active .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;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: none;
  min-height: var(--history-focus-header);
  height: var(--history-focus-header);
  margin: 0;
  padding: calc(.55rem + env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) .55rem max(1rem, env(safe-area-inset-left));
  border: 0;
  background: rgba(6, 29, 47, .985);
  box-shadow: none;
}

.history-focus-home {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0;
  color: var(--history-gold-soft) !important;
  border: 0;
  background: transparent;
  font: 700 1rem/1.1 Georgia, "Times New Roman", serif;
  text-decoration: none;
}

.history-focus-heading {
  min-width: 0;
  text-align: center;
}

.history-focus-heading small {
  display: block;
  margin: 0 0 .18rem;
  overflow: hidden;
  color: var(--history-gold-soft);
  font: 700 .7rem/1.1 system-ui, sans-serif;
  letter-spacing: .09em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.history-focus-heading strong {
  display: block;
  overflow: hidden;
  color: var(--history-paper-2);
  font: 500 clamp(1rem, 2vw, 1.28rem)/1.12 Georgia, "Times New Roman", serif;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-focus-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: .4rem;
}

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

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

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

.history-focus-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(--history-gold);
  border-radius: .55rem;
  color: var(--history-paper-2);
  background: rgba(6, 29, 47, .99);
  box-shadow: 0 16px 36px rgba(0, 0, 0, .32);
}

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

body.history-focus-active #app {
  position: fixed;
  inset: var(--history-focus-header) 0 var(--history-focus-dock);
  box-sizing: border-box;
  width: 100%;
  max-width: none;
  height: auto;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--history-ink);
}

.history-focus-shell {
  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));
  height: 100%;
  margin: 0 auto;
  padding: .7rem 0;
  overflow: hidden;
  background: var(--history-ink);
}

.history-focus-reading {
  box-sizing: border-box;
  min-width: 0;
  min-height: 0;
  height: 100%;
  margin: 0;
  padding: clamp(1.15rem, 3vw, 2rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--history-text);
  border: 1px solid var(--history-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(--history-shadow);
  scrollbar-color: var(--history-gold) rgba(95, 82, 63, .12);
  scrollbar-width: thin;
  scroll-padding-top: 1.5rem;
}

.history-focus-reading > .app-container,
.history-focus-reading.app-container,
.history-focus-reading.reader-panel,
.history-focus-reading.lesson-reader {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: clamp(1.15rem, 3vw, 2rem);
  color: var(--history-text);
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.history-focus-reading > .app-container {
  padding: 0;
}

.history-focus-reading .page-hero {
  width: 100%;
  max-width: none;
  margin: 0 0 1.25rem;
  padding: 0;
  color: var(--history-text);
  border: 0;
  background: transparent;
  box-shadow: none;
}

.history-focus-reading .page-hero > div,
.history-focus-reading .page-hero > * {
  max-width: none;
}

.history-focus-reading .page-hero h1,
.history-focus-reading .section-title {
  margin: 0 0 .4rem;
  color: var(--history-ink);
  font: 500 clamp(2.1rem, 5vw, 3.8rem)/1 Georgia, "Times New Roman", serif;
}

.history-focus-reading .page-hero h1 span,
.history-focus-reading .section-title span {
  color: inherit;
}

.history-focus-reading .page-hero > p:last-child,
.history-focus-reading .page-hero .lead,
.history-focus-reading > .lead {
  color: var(--history-muted);
  font-size: 1.14rem;
  line-height: 1.45;
}

.history-focus-reading .hero-question {
  margin: 1rem 0 0;
  color: var(--history-text);
  border-left-color: var(--history-gold);
  background: rgba(255, 255, 255, .38);
}

.history-focus-reading .lesson-body,
.history-focus-reading .reader-paper,
.history-focus-reading .reader-text {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  color: var(--history-text);
  border: 0;
  background: transparent;
  box-shadow: none;
}

html[data-history-focus-font="large"] .history-focus-reading {
  font-size: 1.1rem;
}

html[data-history-focus-font="xlarge"] .history-focus-reading {
  font-size: 1.2rem;
}

.history-focus-reading h2,
.history-focus-reading h3 {
  color: #173750;
  scroll-margin-top: 1.5rem;
}

.history-focus-reading p,
.history-focus-reading li,
.history-focus-reading td,
.history-focus-reading th {
  color: var(--history-text);
  line-height: 1.72;
}

.history-focus-reading .summary,
.history-focus-reading .in-summary,
.history-focus-reading .problem-card,
.history-focus-reading .activity-card,
.history-focus-reading .lesson-activity,
.history-focus-reading .completion-box {
  color: var(--history-text);
  border-color: var(--history-line);
  background: rgba(255, 255, 255, .38);
}

.history-focus-reading .lesson-nav,
.history-focus-reading .pager {
  margin-bottom: 1rem;
}

.history-focus-sidebar {
  box-sizing: border-box;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  min-width: 0;
  min-height: 0;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: var(--history-paper-2);
  border: 1px solid var(--history-gold);
  border-radius: .6rem;
  background: rgba(6, 29, 47, .96);
  box-shadow: var(--history-shadow);
}

.history-focus-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);
}

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

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

.history-focus-sidebar[data-focus-panel="visual"] .history-focus-notes,
.history-focus-sidebar[data-focus-panel="notes"] .history-focus-visual {
  display: none !important;
}

.history-focus-visual,
.history-focus-notes {
  min-height: 0;
  height: 100%;
}

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

.history-focus-panel-head {
  padding: .72rem .82rem;
  color: var(--history-paper-2);
  background: rgba(6, 29, 47, .98);
}

.history-focus-panel-head small {
  display: block;
  margin: 0 0 .15rem;
  color: #eed2a2;
  font: 700 .68rem/1.2 system-ui, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.history-focus-panel-head h2 {
  margin: 0;
  color: var(--history-paper-2);
  font: 500 1.18rem/1.2 Georgia, "Times New Roman", serif;
}

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

.history-focus-visual-stage > * {
  display: block;
  width: 100%;
  margin: 0 0 .7rem;
  padding: .85rem;
  overflow: hidden;
  color: var(--history-paper-2);
  border: 1px solid var(--history-gold);
  border-radius: .5rem;
  background: linear-gradient(145deg, rgba(7, 39, 60, .98), rgba(12, 58, 87, .96));
  box-shadow: var(--history-shadow);
}

.history-focus-visual-stage > *:last-child {
  margin-bottom: 0;
}

.history-focus-visual-stage h2,
.history-focus-visual-stage h3,
.history-focus-visual-stage p,
.history-focus-visual-stage li,
.history-focus-visual-stage small,
.history-focus-visual-stage strong {
  color: inherit;
}

.history-focus-visual-stage .overline,
.history-focus-visual-stage .kicker {
  color: #eed2a2;
}

.history-focus-visual-stage a,
.history-focus-visual-stage button,
.history-focus-visual-stage .support-link {
  color: var(--history-paper-2);
  border-color: rgba(201, 145, 69, .66);
  background: rgba(255, 255, 255, .06);
}

.history-focus-visual-stage img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 24rem;
  object-fit: contain;
}

.history-focus-links {
  display: grid;
  gap: .45rem;
}

.history-focus-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: .55rem .65rem;
  border: 1px solid rgba(201, 145, 69, .66);
  border-radius: .42rem;
  text-decoration: none;
}

.history-focus-notes {
  display: block;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 .72rem .8rem;
  color: var(--history-ink);
  background: linear-gradient(180deg, var(--history-paper-2), var(--history-paper));
  scrollbar-color: var(--history-gold) rgba(95, 82, 63, .14);
  scrollbar-width: thin;
}

.history-focus-notes .history-focus-panel-head {
  position: sticky;
  top: 0;
  z-index: 4;
  margin: 0 -.72rem .75rem;
}

.history-focus-notes textarea {
  box-sizing: border-box;
  width: 100%;
  min-height: 13rem;
  padding: .8rem;
  color: var(--history-text);
  border: 1px solid rgba(95, 82, 63, .38);
  border-radius: .45rem;
  background: rgba(255, 255, 255, .58);
  font: inherit;
  line-height: 1.5;
  resize: vertical;
}

.history-focus-note-actions,
.history-focus-more-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .42rem;
  margin-top: .6rem;
}

.history-focus-note-actions button,
.history-focus-more-actions button,
.history-focus-more-actions a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .55rem;
  color: var(--history-paper-2);
  border: 1px solid rgba(95, 82, 63, .38);
  border-radius: .42rem;
  background: var(--history-ink);
  font: 700 .76rem/1.15 Georgia, "Times New Roman", serif;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.history-focus-more {
  margin-top: .7rem;
}

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

.history-focus-more summary::-webkit-details-marker {
  display: none;
}

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

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

.history-focus-dock {
  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(--history-focus-dock);
  height: var(--history-focus-dock);
  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(--history-line);
  background: rgba(6, 29, 47, .99);
}

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

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

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

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

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

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

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

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

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

.history-focus-dialog {
  width: min(820px, calc(100% - 2rem));
  max-height: min(84vh, 880px);
  padding: 1.2rem;
  overflow: auto;
  color: var(--history-text);
  border: 1px solid var(--history-gold);
  border-radius: .7rem;
  background: var(--history-paper);
  box-shadow: var(--history-shadow);
}

.history-focus-dialog::backdrop {
  background: rgba(6, 29, 47, .86);
  backdrop-filter: blur(4px);
}

.history-focus-dialog-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 1rem;
}

.history-focus-dialog-head small {
  color: var(--history-red);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.history-focus-dialog-head h2 {
  margin: .2rem 0 0;
  color: var(--history-ink);
}

.history-focus-dialog-close {
  width: 44px;
  height: 44px;
  color: white;
  border: 0;
  border-radius: 50%;
  background: var(--history-red);
  font-size: 1.35rem;
  cursor: pointer;
}

.history-focus-learning-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .42rem;
  margin: 1rem 0;
}

.history-focus-learning-tabs button {
  min-height: 44px;
  padding: .55rem;
  color: var(--history-ink);
  border: 1px solid var(--history-line);
  border-radius: .42rem;
  background: rgba(255, 255, 255, .42);
  font-weight: 700;
  cursor: pointer;
}

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

.history-focus-learning-panel[hidden] {
  display: none !important;
}

.history-focus-learning-panel > * {
  margin-right: 0;
  margin-left: 0;
}

.history-focus-quiz-link {
  display: grid;
  gap: .6rem;
  padding: 1rem;
  border: 1px solid var(--history-line);
  border-radius: .55rem;
  background: rgba(255, 255, 255, .42);
}

.history-focus-quiz-link button {
  min-height: 44px;
  color: var(--history-paper-2);
  border: 1px solid var(--history-gold);
  border-radius: .42rem;
  background: var(--history-ink);
  font-weight: 700;
  cursor: pointer;
}

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

@media (max-width: 820px) {
  :root {
    --history-focus-header: 74px;
  }

  body.history-focus-active .app-header,
  body.history-focus-active .topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: .45rem;
    padding-right: .55rem;
    padding-left: .55rem;
  }

  .history-focus-home {
    width: 44px;
    overflow: hidden;
    font-size: 0;
  }

  .history-focus-home::before {
    content: "←";
    font-size: 1.2rem;
  }

  .history-focus-actions > button[data-history-index] {
    display: none;
  }

  .history-focus-heading small {
    font-size: .58rem;
  }

  .history-focus-heading strong {
    font-size: .9rem;
  }

  .history-focus-shell {
    display: block;
    width: 100%;
    padding: 0;
  }

  .history-focus-reading {
    width: 100%;
    border: 0;
    border-radius: 0;
  }

  .history-focus-sidebar {
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    width: 100%;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .history-focus-tabs {
    display: none;
  }

  .history-focus-shell[data-mobile-panel="read"] .history-focus-sidebar,
  .history-focus-shell[data-mobile-panel="visual"] .history-focus-reading,
  .history-focus-shell[data-mobile-panel="notes"] .history-focus-reading {
    display: none !important;
  }

  .history-focus-shell[data-mobile-panel="read"] .history-focus-reading {
    display: block;
  }

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

  .history-focus-shell[data-mobile-panel="visual"] .history-focus-notes,
  .history-focus-shell[data-mobile-panel="notes"] .history-focus-visual {
    display: none !important;
  }

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

  .history-focus-shell[data-mobile-panel="notes"] .history-focus-notes {
    display: block !important;
  }

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

  .history-focus-dock {
    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));
  }

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

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

  .history-focus-dock-actions button[aria-pressed="true"] {
    color: var(--history-paper-2);
    background: var(--history-ink-2);
  }

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

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

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

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