/* Lesson-specific styles: Details, Dialog e Popover */

.layout-card-highlight {
  border-color: #111;
  background: #fffbe6;
}

.native-map-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.native-map-cards .layout-card {
  text-align: left;
  gap: 10px;
}

.native-map-cards .layout-card > p {
  margin-top: 0;
  padding-top: 0;
}

.card-rendered-example {
  margin-top: auto;
  padding-top: 8px;
}

.card-rendered-example details {
  border: 1px solid #111;
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}

.card-rendered-example summary {
  cursor: pointer;
  font-weight: 700;
  padding: 9px 10px;
  background: #f5f5f5;
}

.card-rendered-example details p {
  padding: 10px;
}

.card-rendered-example p {
  font-size: 0.92rem;
  line-height: 1.35;
  margin: 0;
}

.card-demo-button {
  width: 100%;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  border: 2px solid #111;
  border-radius: 6px;
  background: #111;
  color: #fff;
  padding: 9px 10px;
  cursor: pointer;
}

.intro-card-dialog {
  width: min(420px, calc(100vw - 48px));
  margin: auto;
}

.intro-popover-trigger {
  anchor-name: --intro-filtri-anchor;
}

.intro-card-popover {
  width: 260px;
  overflow: visible;
}

.intro-card-popover:popover-open {
  inset: 50% auto auto 50%;
  margin: 0;
  transform: translate(-50%, -50%);
}

.intro-card-popover::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 22px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-top: 2px solid #111;
  border-left: 2px solid #111;
  transform: rotate(45deg);
}

.intro-card-popover label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  line-height: 1.3;
  margin: 10px 0;
}

.intro-card-popover input {
  accent-color: #111;
}

@supports (top: anchor(bottom)) {
  .intro-card-popover:popover-open {
    position: absolute;
    position-anchor: --intro-filtri-anchor;
    inset: auto;
    top: anchor(bottom);
    left: anchor(left);
    margin-top: 10px;
    transform: none;
  }
}

.details-key-points h3 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: 1.2rem;
}

.details-key-points ul {
  margin-bottom: 0;
  padding-left: 22px;
}

.details-key-points li {
  font-size: 1rem;
  line-height: 1.45;
  margin-bottom: 10px;
}

.css-details-demo-item {
  border: 2px solid #111;
  border-radius: 8px;
  background: #fff;
}

.css-details-demo-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 800;
  padding: 16px 18px;
  background: #f8fafc;
}

.css-details-demo-item summary::marker {
  content: "";
}

.css-details-demo-item summary::-webkit-details-marker {
  display: none;
}

.css-details-demo-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 1.4rem;
  line-height: 1;
}

.css-details-demo-item[open] summary::after {
  rotate: 45deg;
}

.css-details-demo-item::details-content {
  display: grid;
  gap: 12px;
  background: #fff;
}

.css-details-demo-item p {
  margin: 0;
  padding: 0 18px;
}

.css-details-demo-item p:first-of-type {
  padding-top: 16px;
  border-top: 1px solid #d4d4d4;
}

.css-details-demo-item p:last-of-type {
  padding-bottom: 18px;
}

#prova-faq-accessibile .try-preview-full {
  border-color: #d8cec0;
  background: #f8f3ea;
}

#prova-faq-accessibile .try-preview-full h3 {
  color: #6d4a22;
}

/* Reset confinato alla preview: nel CodePen il reset equivalente è globale. */
.faq,
.faq *,
.faq *::before,
.faq *::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

.faq {
  font-family: sans-serif;
}

/* Imposto il layout generale della FAQ e la tonalità base. */
.faq {
  --hue: 32;
  --text-color: hsl(calc(var(--hue) + 0) 20% 11%);
  --muted-text-color: hsl(calc(var(--hue) + 0) 15% 29%);
  --border-color: hsl(calc(var(--hue) + 3) 24% 80%);
  --surface-color: hsl(calc(var(--hue) + 8) 50% 98%);
  --shadow-color: hsl(calc(var(--hue) - 2) 18% 10% / 0.08);
  --open-border-color: hsl(calc(var(--hue) - 3) 56% 50%);
  --summary-background-color: hsl(calc(var(--hue) + 5) 42% 93%);
  --summary-border-color: hsl(calc(var(--hue) + 2) 29% 85%);
  --focus-color: hsl(calc(var(--hue) + 1) 52% 44%);
  --marker-background-color: hsl(calc(var(--hue) + 4) 66% 94%);
  --marker-color: hsl(calc(var(--hue) - 3) 77% 31%);
  max-width: 720px;
  display: grid;
  gap: 0.75rem;
  color: var(--text-color);
}

/* Rendo il titolo più compatto rispetto al titolo della pagina. */
.faq h2 {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
}

/* Stilo ogni details come una card e taglio il contenuto agli angoli arrotondati. */
.faq details {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--surface-color);
  box-shadow: 0 2px 8px var(--shadow-color);
  overflow: clip;
}

/* Evidenzio il blocco aperto con un bordo più caldo. */
.faq details[open] {
  border-color: var(--open-border-color);
}

/* Trasformo summary in una riga flex con testo a sinistra e marker a destra. */
.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  color: var(--text-color);
}

/* Aggiungo feedback visivo al passaggio del mouse e al focus da tastiera. */
.faq summary:hover {
  background: var(--summary-background-color);
}

.faq summary:focus-visible {
  outline: 3px solid var(--focus-color);
  outline-offset: 3px;
}

/* Quando il details è aperto, separo il summary dal contenuto. */
.faq details[open] summary {
  background: var(--summary-background-color);
  border-bottom: 1px solid var(--summary-border-color);
}

/* Nascondo il marker nativo, incluso quello usato da Safari. */
.faq summary::marker {
  content: "";
}

.faq summary::-webkit-details-marker {
  display: none;
}

/* Ricreo il marker con un + allineato a destra. */
.faq summary::after {
  content: "+";
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--marker-background-color);
  color: var(--marker-color);
  /* Il + di alcuni font sans-serif non risulta ben centrato. */
  font-family: monospace;
  font-size: 1.2rem;
  line-height: 1;
}

/* Ruoto il + quando il details è aperto. */
.faq details[open] summary::after {
  rotate: 45deg;
}

/* Uso ::details-content per gestire lo spazio tra più paragrafi. */
.faq details::details-content {
  display: grid;
  gap: 0.75rem;
}

/* Sistemo spaziatura e leggibilità dei paragrafi interni. */
.faq details p {
  margin: 0;
  padding: 0 1.1rem;
  color: var(--muted-text-color);
  line-height: 1.55;
}

.faq details p:first-of-type {
  padding-top: 0.85rem;
}

.faq details p:last-of-type {
  padding-bottom: 1.1rem;
}

/* Reset confinato alla preview: nel CodePen il reset equivalente è globale. */
.danger-zone,
.danger-zone *,
.danger-zone *::before,
.danger-zone *::after,
#conferma,
#conferma *,
#conferma *::before,
#conferma *::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

.danger-zone,
#conferma {
  font-family: sans-serif;
}

/* Definisco la palette del componente partendo da una tonalità. */
.danger-zone {
  --hue: 12;
  --text-color: hsl(calc(var(--hue) + 0) 24% 12%);
  --muted-text-color: hsl(calc(var(--hue) + 0) 14% 36%);
  --surface-color: hsl(calc(var(--hue) + 12) 42% 98%);
  --panel-color: hsl(calc(var(--hue) + 8) 46% 95%);
  --border-color: hsl(calc(var(--hue) + 4) 24% 78%);
  --danger-color: hsl(calc(var(--hue) + 0) 72% 42%);
  --danger-hover-color: hsl(calc(var(--hue) + 0) 72% 35%);
  --button-text-color: hsl(calc(var(--hue) + 8) 35% 98%);
  --shadow-color: hsl(calc(var(--hue) + 0) 28% 10% / 0.18);
  --backdrop-color: hsl(calc(var(--hue) + 0) 18% 10% / 0.65);
  --focus-color: hsl(calc(var(--hue) + 8) 80% 45%);
}

/* Organizzo pulsante e output come controlli dello stesso gruppo. */
.danger-zone {
  max-width: 560px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  color: var(--text-color);
}

/* Rendo evidente che il pulsante avvia un'azione critica. */
#apri {
  font: inherit;
  font-weight: 700;
  border: 1px solid var(--danger-color);
  border-radius: 8px;
  background: var(--danger-color);
  color: var(--button-text-color);
  padding: 0.75rem 1rem;
  cursor: pointer;
}

#apri:hover {
  background: var(--danger-hover-color);
}

/* Mostro lo stato dell'interazione vicino al pulsante. */
#risultato {
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--panel-color);
  color: var(--muted-text-color);
  padding: 0.55rem 0.8rem;
}

/* Centro e stilo il dialog aperto con showModal(). */
#conferma {
  width: 420px;
  max-width: calc(100% - 2rem);
  margin: auto;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--surface-color);
  color: var(--text-color);
  box-shadow: 0 16px 48px var(--shadow-color);
  padding: 0;
  overflow: visible;
}

#conferma::backdrop {
  background: var(--backdrop-color);
}

/* Creo un contenitore interno per posizionare il pulsante di chiusura. */
#conferma .dialog-content {
  position: relative;
  padding: 1.25rem;
}

#conferma .dialog-close-form {
  margin: 0;
}

/* Sistemo gerarchia e leggibilità del contenuto. */
#conferma h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
}

#conferma p {
  margin: 0;
  color: var(--muted-text-color);
  line-height: 1.45;
}

/* Allineo le azioni del dialog e distinguo primaria e secondaria. */
#conferma form {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

#conferma button {
  font: inherit;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--panel-color);
  color: var(--text-color);
  padding: 0.65rem 0.9rem;
  cursor: pointer;
}

/* Ancoro il centro della X al vertice in alto a destra del dialog. */
#conferma .dialog-close {
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(50%, -50%);
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--surface-color);
  padding: 0;
}

#conferma button[value="elimina"] {
  border-color: var(--danger-color);
  background: var(--danger-color);
  color: var(--button-text-color);
}

#conferma button[value="elimina"]:hover {
  background: var(--danger-hover-color);
}

/* Mantengo visibile il focus da tastiera. */
#apri:focus-visible,
#conferma button:focus-visible {
  outline: 3px solid var(--focus-color);
  outline-offset: 3px;
}

.rendered-example {
  border: 2px solid #111;
  border-radius: 8px;
  background: #fff;
  padding: 18px;
  margin: 18px 0 28px;
}

.rendered-example-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  color: #555;
  margin-bottom: 12px;
}

.rendered-example details {
  border: 2px solid #111;
  border-radius: 6px;
  background: #fff;
}

.rendered-example summary {
  cursor: pointer;
  font-weight: 700;
  padding: 12px 14px;
  background: #f5f5f5;
}

.rendered-example details > p,
.rendered-example details > ul {
  margin: 0;
  padding: 14px 16px 16px;
}

.css-details-demo details > p {
  padding: 0 18px;
}

.css-details-demo details > p:first-of-type {
  padding-top: 16px;
}

.css-details-demo details > p:last-of-type {
  padding-bottom: 18px;
}

.rendered-dialog-box {
  max-width: 430px;
  margin: 0 auto;
  border: 2px solid #111;
  border-radius: 8px;
  background: #fff;
  padding: 20px;
  box-shadow: 8px 8px 0 #e5e7eb;
}

.rendered-dialog-box h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.rendered-dialog-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 18px;
}

.rendered-dialog-actions button,
.rendered-chat-box button {
  font: inherit;
  border: 2px solid #111;
  border-radius: 6px;
  background: #fff;
  color: #111;
  padding: 8px 12px;
}

.rendered-dialog-actions button:last-child {
  background: #111;
  color: #fff;
}

.rendered-choice-dialog[open] {
  position: static;
  width: min(100%, 560px);
  margin: 0;
}

.rendered-choice-dialog form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 18px;
}

.rendered-choice-dialog button {
  font: inherit;
  border: 2px solid #111;
  border-radius: 6px;
  background: #fff;
  color: #111;
  padding: 8px 12px;
}

.rendered-choice-dialog .danger {
  border-color: #7f1d1d;
  background: #7f1d1d;
  color: #fff;
}

.browser-surface {
  position: relative;
  min-height: 190px;
  border: 1px solid #d0d0d0;
  border-radius: 8px;
  background: linear-gradient(#f8fafc, #eef2ff);
  padding: 18px;
  overflow: hidden;
}

.surface-card {
  width: 58%;
  min-height: 36px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid #d7d7d7;
  margin-bottom: 10px;
}

.rendered-chat-box {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: min(260px, 48%);
  border: 2px solid #111;
  border-radius: 8px;
  background: #fff;
  padding: 16px;
  box-shadow: 6px 6px 0 rgb(17 17 17 / 0.12);
}

.backdrop-render {
  position: relative;
  min-height: 230px;
  border-radius: 8px;
  background: #e5e7eb;
  overflow: hidden;
}

.backdrop-render::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, #fff 0 62%, transparent 62%),
    repeating-linear-gradient(#cbd5e1 0 12px, transparent 12px 28px);
  opacity: 0.75;
}

.backdrop-render::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.65);
}

.backdrop-render .rendered-dialog-box {
  position: relative;
  z-index: 1;
  margin: 42px auto 0;
  box-shadow: none;
}

.semantic-popover-render {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.semantic-popover-card {
  border: 2px solid #111;
  border-radius: 8px;
  padding: 14px;
  background: #fff;
}

.semantic-popover-render .demo-action {
  width: 100%;
}

.semantic-popover-card strong {
  display: block;
  margin-bottom: 8px;
}

/* Il wrapper tiene il trigger in linea con il testo della slide. */
.anchor-demo {
  display: inline-block;
}

/* Il pulsante diventa l'ancora: il nome sarà richiamato dal popover. */
.anchor-trigger {
  anchor-name: --filtri;
  width: 13rem;
  font: inherit;
  border: 2px solid #111;
  border-radius: 6px;
  background: #111;
  color: #fff;
  padding: 0.7rem 1rem;
  text-align: left;
}

/* Il popover segue l'ancora invece di restare centrato nella viewport. */
.anchor-menu {
  position: absolute;
  position-anchor: --filtri;
  /* anchor(bottom) prende il bordo basso del pulsante e aggiunge spazio. */
  top: calc(anchor(bottom) + 0.5rem);
  right: auto;
  bottom: auto;
  /* anchor(left) allinea il bordo sinistro del popover al pulsante. */
  left: anchor(left);
  margin: 0;
  width: 13rem;
  /* anchor-size(width) impedisce al menu di essere più stretto del trigger. */
  min-width: anchor-size(width);
  border: 2px solid #111;
  border-radius: 8px;
  background: #fff;
  padding: 0.85rem;
  box-shadow: 6px 6px 0 #e5e7eb;
}

/* Solo da aperto il popover diventa una griglia di opzioni. */
.anchor-menu:popover-open {
  display: grid;
  gap: 0.5rem;
  /* Safari: evita distribuzioni verticali inattese nel grid del popover. */
  align-content: start;
}

/* Stili interni: rendono leggibili titolo e opzioni del menu. */
.anchor-menu strong {
  display: block;
  font-size: 0.95rem;
}

.anchor-menu button {
  font: inherit;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #f8fafc;
  padding: 0.55rem 0.65rem;
  text-align: left;
}

.concept-panel {
  border: 2px solid #111;
  border-radius: 8px;
  padding: 20px;
  background: #fafafa;
}

.concept-panel h3 {
  margin-top: 0;
}

.disclosure-demo .demo-area details,
.details-group-demo details {
  border: 2px solid #111;
  border-radius: 6px;
  background: #fff;
  margin: 10px 0;
  padding: 0;
}

.disclosure-demo summary,
.details-group-demo summary {
  cursor: pointer;
  font-weight: 700;
  padding: 14px 18px;
  background: #f5f5f5;
}

.disclosure-demo details > p,
.details-group-demo details > p,
.details-group-demo details > ul {
  padding: 16px 18px 18px;
  margin: 0;
}

.live-code-display {
  background: #2d2d2d;
  border-radius: 8px;
  padding: 12px;
  margin: 0 20px 20px;
  overflow-x: auto;
}

.live-code-display pre {
  margin: 0;
  border: none;
  padding: 0;
  background: transparent;
}

.top-layer-diagram {
  display: grid;
  gap: 12px;
  margin: 32px 0;
}

.top-layer-diagram > div {
  border: 2px solid #111;
  border-radius: 8px;
  padding: 18px;
  font-size: 1.1rem;
  text-align: center;
}

.page-layer { background: #eef2ff; }
.css-layer { background: #fef3c7; }
.browser-layer { background: #dcfce7; }

.demo-action,
.lesson-dialog button,
.lesson-popover button {
  font: inherit;
  border: 2px solid #111;
  background: #111;
  color: #fff;
  border-radius: 6px;
  padding: 10px 16px;
  cursor: pointer;
}

.demo-action.secondary,
.lesson-dialog button:not(.danger-button),
.lesson-popover button {
  background: #fff;
  color: #111;
}

.danger-button {
  background: #b91c1c;
  border-color: #b91c1c;
}

.lesson-dialog {
  margin: auto;
  border: 2px solid #111;
  border-radius: 8px;
  padding: 28px;
  max-width: 520px;
  color: #111;
}

.lesson-dialog h3 {
  margin-top: 0;
}

.lesson-dialog::backdrop {
  background: rgb(0 0 0 / 0.65);
}

.dialog-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

.dialog-demo output {
  font-family: 'SF Mono', Monaco, monospace;
  background: #fff;
  border: 1px solid #bbb;
  border-radius: 6px;
  padding: 8px 12px;
}

.lesson-popover,
.popover-dialog {
  border: 2px solid #111;
  border-radius: 8px;
  padding: 18px;
  background: #fff;
  color: #111;
  max-width: 320px;
}

.lesson-popover:not(.intro-card-popover):popover-open,
.popover-dialog:popover-open {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
}

.lesson-popover h3,
.popover-dialog h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.lesson-popover button {
  display: block;
  width: 100%;
  margin: 8px 0 0;
  text-align: left;
}

.status-popover {
  margin: auto;
}

.filter-popover label {
  display: block;
  margin: 10px 0;
}

.search-popover form {
  display: grid;
  gap: 12px;
}

.search-popover input {
  font: inherit;
  padding: 10px;
  border: 1px solid #999;
  border-radius: 6px;
}

.image-with-note {
  margin: 24px 0;
}

.image-with-note img,
.image-gallery img,
.exercise-preview img {
  max-width: 100%;
  height: auto;
  border: 1px solid #d0d0d0;
  border-radius: 8px;
  background: #fff;
}

.image-with-note.compact img {
  max-height: 330px;
  object-fit: contain;
}

.image-with-note p {
  font-size: 0.95rem;
  color: #555;
  margin-top: 8px;
}

.image-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.image-gallery figure {
  margin: 0;
}

.image-gallery figcaption {
  font-size: 0.9rem;
  color: #444;
  margin-top: 8px;
  text-align: center;
}

#esempi-popover-reali .image-gallery {
  grid-template-columns: 1fr;
  gap: 28px;
}

#esempi-popover-reali .image-gallery figure {
  max-width: 980px;
}

#esempi-popover-reali .image-gallery img {
  display: block;
  width: 100%;
  max-height: 560px;
  object-fit: contain;
}

#esempi-popover-reali .image-gallery figcaption {
  margin-top: 10px;
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
}

.decision-table {
  table-layout: fixed;
}

.decision-table th:first-child,
.decision-table td:first-child {
  width: 26%;
}

.decision-table th:nth-child(2),
.decision-table td:nth-child(2),
.decision-table th:nth-child(3),
.decision-table td:nth-child(3) {
  width: 37%;
}

.exercise-intro {
  font-size: 1.15rem;
}

.exercise-guide {
  display: grid;
  grid-template-columns: 100%;
  gap: 24px;
  margin-top: 24px;
}

.exercise-guide-section {
  background: #fff;
  border: 2px solid #3b82f6;
  border-radius: 8px;
  padding: 20px 24px;
}

.exercise-guide-section h3 {
  margin-top: 0;
  color: #1e40af;
}

.exercise-guide-section h4 {
  margin: 22px 0 10px;
  color: #1e3a8a;
  font-size: 1rem;
}

.exercise-guide-section > :last-child {
  margin-bottom: 0;
}

.exercise-guide pre {
  overflow: auto;
}

.exercise-guide-section pre {
  margin-top: 12px;
}

.exercise-guide-section li + li {
  margin-top: 8px;
}

.exercise-guide-section details.guide-hint {
  margin: 14px 0;
  border: 1px solid #93c5fd;
  border-radius: 8px;
  background: #eff6ff;
  overflow: clip;
}

.exercise-guide-section details.guide-hint > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-weight: 600;
  color: #1e40af;
  list-style: none;
  cursor: pointer;
}

.exercise-guide-section details.guide-hint > summary::marker { content: ""; }
.exercise-guide-section details.guide-hint > summary::-webkit-details-marker { display: none; }

.exercise-guide-section details.guide-hint > summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  border: 1px solid #93c5fd;
  border-radius: 999px;
  background: #fff;
  color: #1e40af;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  line-height: 1;
}

.exercise-guide-section details.guide-hint[open] > summary::before {
  content: "−";
}

.exercise-guide-section details.guide-hint[open] > summary {
  border-bottom: 1px solid #cbd9ff;
}

.exercise-guide-section details.guide-hint > p {
  margin: 12px 14px;
  color: #1f2a44;
}

.exercise-guide-section details.guide-hint > pre {
  margin: 12px 14px;
}

.exercise-guide-section details.guide-hint code {
  background: #dbeafe;
  color: #1e3a8a;
  padding: 1px 5px;
  border-radius: 4px;
}

.exercise-guide-section details.guide-hint > pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  border-radius: 0;
}

.exercise-levels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.exercise-level {
  background: #fff;
  border: 2px solid #3b82f6;
  border-radius: 8px;
  padding: 16px;
}

.exercise-level h3 {
  margin-top: 0;
  font-size: 1rem;
  color: #1e40af;
}

.exercise-level ul {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.exercise-hints,
.exercise-checklist {
  background: #fff;
  border-radius: 8px;
  padding: 18px 22px;
  margin: 20px 0;
}

.exercise-hints h3,
.exercise-checklist h3 {
  margin-top: 0;
  color: #1e40af;
}

.slide-thanks-content .thanks-tagline,
.slide-thanks-content .thanks-next {
  max-width: 760px;
  text-align: center;
}

@media (max-width: 1200px) {
  .image-gallery {
    grid-template-columns: 1fr;
  }

  .image-gallery img {
    max-height: 220px;
    object-fit: contain;
  }
}