/* reveal-slides custom theme
   Minimalista, coerente con mathofthings design
   Palette: #faf7f2 (background), #ed6f5c (coral), #2c2520 (text)
   Font: Playfair Display (titoli), Georgia (corpo), JetBrains Mono (tecnico)
*/

:root {
  --bg-light: #f5f0e8;
  --bg-dark: #1a1a1a;
  --primary: #ed6f5c;
  --primary-dark: #c2185b;
  --text-light: #2c2520;
  --text-dark: #e0e0e0;
  --border-light: rgba(44, 37, 32, 0.1);
  --reveal-width: 100%;
  --reveal-height: 100%;
}

@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800&family=Georgia:wght@400;700&family=JetBrains+Mono:wght@400;600&display=swap");

/* Dark mode support */
html.dark-mode {
  color-scheme: dark;
}

html:not(.dark-mode) {
  color-scheme: light;
}

/* ─────────────────────────────────────────────────────────────
   TEMA REVEAL.JS BASE
   ───────────────────────────────────────────────────────────── */

.reveal {
  font-family: Georgia, serif;
  font-size: 32px;
  font-weight: normal;
  color: var(--text-light);
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: "Playfair Display", serif;
  font-weight: 700;
  text-transform: none;
  word-wrap: break-word;
  line-height: 1.2;
}

.reveal h1 { font-size: 3.4em; line-height: 1.1; }
.reveal h2 { font-size: 2.4em; }
.reveal h3 { font-size: 1.9em; }
.reveal h4 { font-size: 1.4em; }
.reveal h5 { font-size: 1.1em; }
.reveal h6 { font-size: 0.88em; }

/* Alternanza corsivo/normale nei titoli */
.reveal h1 em,
.reveal h2 em,
.reveal h3 em,
.reveal h4 em {
  font-style: italic;
  color: var(--primary);
  font-weight: 800;
}

.reveal p {
  margin: 20px 0;
  line-height: 1.7;
}

.reveal em {
  font-style: italic;
  color: var(--primary);
}

.reveal strong {
  font-weight: 700;
}

/* ─────────────────────────────────────────────────────────────
   BACKGROUND — sfondo bianco con particles overlay
   ───────────────────────────────────────────────────────────── */

.reveal-viewport {
  background: var(--bg-light);
}

#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* ─────────────────────────────────────────────────────────────
   SLIDE STYLING
   ───────────────────────────────────────────────────────────── */

.reveal {
  background: transparent;
  padding: 0;
}

.reveal .slides {
  text-align: left;
}

.reveal .slides > section {
  box-sizing: border-box;
  padding: 50px 90px;
}

.reveal .slides > section > section {
  box-sizing: border-box;
  padding: 50px 90px;
}

/* ─────────────────────────────────────────────────────────────
   SLIDE TITOLO (H1 isolato)
   ───────────────────────────────────────────────────────────── */

.reveal section.title-slide h1 {
  font-size: 4em;
  letter-spacing: -0.05em;
  margin-bottom: 0.2em;
}

.reveal section.title-slide .subtitle {
  font-size: 1.5em;
  font-style: italic;
  color: var(--primary);
  margin-top: 0.3em;
}

/* ─────────────────────────────────────────────────────────────
   BLOCCHI DEFINIZIONE (colonna coral-left)
   ───────────────────────────────────────────────────────────── */

.definition-block {
  border-left: 4px solid var(--primary);
  padding-left: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
  margin: 24px 0;
  background: rgba(237, 111, 92, 0.04);
  font-size: 0.95em;
}

.definition-block .label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

/* ─────────────────────────────────────────────────────────────
   FORMULA MATEMATICA
   ───────────────────────────────────────────────────────────── */

.reveal .math {
  font-family: Georgia, serif;
  font-size: 1.1em;
  margin: 16px 0;
  padding: 12px 0;
}

/* ─────────────────────────────────────────────────────────────
   CODICE
   ───────────────────────────────────────────────────────────── */

.reveal code {
  font-family: "Fira Code", monospace;
  font-size: 0.9em;
  padding: 2px 6px;
  background: rgba(44, 37, 32, 0.08);
  border-radius: 3px;
  color: var(--text-light);
}

.reveal pre {
  width: 100%;
  margin: 24px 0;
  padding: 16px;
  background: rgba(44, 37, 32, 0.06);
  border-left: 3px solid var(--primary);
  border-radius: 4px;
  font-size: 0.75em;
}

.reveal pre code {
  background: transparent;
  padding: 0;
}

/* ─────────────────────────────────────────────────────────────
   LISTE
   ───────────────────────────────────────────────────────────── */

.reveal ul,
.reveal ol {
  margin: 24px 0;
  padding-left: 40px;
}

.reveal ul li,
.reveal ol li {
  margin-bottom: 12px;
  line-height: 1.6;
}

.reveal ul li::marker {
  color: var(--primary);
}

/* ─────────────────────────────────────────────────────────────
   QUOTE
   ───────────────────────────────────────────────────────────── */

.reveal blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 24px;
  margin: 24px 0;
  font-style: italic;
  background: rgba(237, 111, 92, 0.04);
  font-size: 0.95em;
}

.reveal blockquote > p:first-child::before {
  content: '"';
  color: var(--primary);
  font-size: 1.5em;
  font-weight: 700;
  margin-right: 4px;
}

/* ─────────────────────────────────────────────────────────────
   TABELLE
   ───────────────────────────────────────────────────────────── */

.reveal table {
  margin: 24px auto;
  border-collapse: collapse;
  font-size: 0.85em;
}

.reveal table th {
  border-bottom: 2px solid var(--primary);
  padding: 12px 8px;
  font-weight: 700;
  text-align: left;
  background: rgba(237, 111, 92, 0.06);
}

.reveal table td {
  padding: 8px;
  border-bottom: 1px solid var(--border-light);
}

/* ─────────────────────────────────────────────────────────────
   LINK
   ───────────────────────────────────────────────────────────── */

.reveal a {
  color: var(--primary);
  text-decoration: underline;
  transition: color 0.2s ease;
}

.reveal a:hover {
  color: var(--primary-dark);
}

/* ─────────────────────────────────────────────────────────────
   NOTA (sidebar leggero)
   ───────────────────────────────────────────────────────────── */

.note {
  font-size: 0.75em;
  font-style: italic;
  color: rgba(44, 37, 32, 0.6);
  padding: 12px 16px;
  border-left: 2px solid rgba(237, 111, 92, 0.3);
  margin: 16px 0;
}

/* ─────────────────────────────────────────────────────────────
   CONTROLLI REVEAL
   ───────────────────────────────────────────────────────────── */

.reveal .controls {
  color: var(--primary);
}

.reveal .progress {
  background: rgba(237, 111, 92, 0.3);
  color: var(--primary);
}

.reveal .progress bar {
  background: var(--primary);
}

/* ─────────────────────────────────────────────────────────────
   SPEAKER NOTES
   ───────────────────────────────────────────────────────────── */

.reveal .speaker-notes {
  background: rgba(44, 37, 32, 0.06);
  color: var(--text-light);
  padding: 16px;
  border-top: 1px solid var(--border-light);
  font-size: 0.75em;
}

/* ─────────────────────────────────────────────────────────────
   LAYOUT DUE COLONNE
   ───────────────────────────────────────────────────────────── */

.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7em;
  align-items: center;
  font-size: 0.85em;
}

.two-columns.left-image {
  grid-template-columns: 1fr 1.2fr;
}

.two-columns.right-image {
  grid-template-columns: 1.2fr 1fr;
}

.two-columns img {
  max-width: 100%;
  height: auto;
}

.two-columns > div {
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

/* Descrizione metodo - testo non deborda */
.reveal div[style*="margin-top: 1.5em"] {
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 90%;
  margin-right: 40px;
}

/* Colonna sinistra visibile, destra con fragment (animata) */
.two-columns > div:first-child {
  /* sempre visibile */
}

.two-columns > div:last-child {
  /* animazione fragment */
}

/* ─────────────────────────────────────────────────────────────
   ESEMPI STILATI
   ───────────────────────────────────────────────────────────── */

.example-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75em;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5em;
  letter-spacing: 0.05em;
}

/* ─────────────────────────────────────────────────────────────
   DESCRIZIONE METODO
   ───────────────────────────────────────────────────────────── */

.method-description {
  margin-top: 1.5em;
  padding: 16px;
  border: 1px solid rgba(237, 111, 92, 0.2);
  border-radius: 4px;
  background: rgba(245, 240, 232, 0.5);
}

.method-description-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8em;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.8em;
}

.method-description p {
  font-family: Georgia, serif;
  font-size: 0.95em;
  line-height: 1.7;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .two-columns {
    grid-template-columns: 1fr;
    gap: 1.5em;
  }

  .two-columns.left-image,
  .two-columns.right-image {
    grid-template-columns: 1fr;
  }
}

/* ─────────────────────────────────────────────────────────────
   NUMERAZIONE SLIDE
   ───────────────────────────────────────────────────────────── */

.reveal .slide-number {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8em;
  color: var(--text-light);
  opacity: 0.5;
  font-family: "JetBrains Mono", monospace;
  z-index: 10;
}

/* ─────────────────────────────────────────────────────────────
   DARK MODE
   ───────────────────────────────────────────────────────────── */

html.dark-mode .reveal-viewport {
  background: var(--bg-dark);
}

html.dark-mode .reveal {
  color: var(--text-dark);
}

html.dark-mode .reveal code {
  background: rgba(224, 224, 224, 0.15);
  color: #e0e0e0;
}

html.dark-mode .reveal pre {
  background: rgba(224, 224, 224, 0.06);
  border-left-color: #f08e7c;
}

html.dark-mode .reveal h1,
html.dark-mode .reveal h2,
html.dark-mode .reveal h3,
html.dark-mode .reveal h4,
html.dark-mode .reveal h5,
html.dark-mode .reveal h6 {
  color: var(--text-dark);
}

html.dark-mode .reveal h1 em,
html.dark-mode .reveal h2 em,
html.dark-mode .reveal h3 em,
html.dark-mode .reveal h4 em {
  color: #f08e7c;
}

html.dark-mode .definition-block {
  border-left-color: #f08e7c;
  background: rgba(240, 142, 124, 0.06);
}

html.dark-mode .definition-block .label {
  color: #f08e7c;
}

html.dark-mode .note {
  color: rgba(224, 224, 224, 0.7);
  border-left-color: rgba(240, 142, 124, 0.4);
}

html.dark-mode blockquote {
  border-left-color: #f08e7c;
  background: rgba(240, 142, 124, 0.06);
}

html.dark-mode .reveal a {
  color: #f08e7c;
}

html.dark-mode .reveal a:hover {
  color: #ffb0a0;
}

html.dark-mode .reveal table th {
  border-bottom-color: #f08e7c;
  background: rgba(240, 142, 124, 0.1);
}

html.dark-mode .reveal table td {
  border-bottom-color: rgba(224, 224, 224, 0.2);
}

/* ─────────────────────────────────────────────────────────────
   CALLOUT BOXES
   ───────────────────────────────────────────────────────────── */

.callout {
  border-left: 3px solid var(--primary);
  border-radius: 0 4px 4px 0;
  padding: 10px 16px;
  margin: 0.6em 0;
  font-size: 0.82em;
  line-height: 1.6;
}

.callout-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 0.3em;
}

.callout-warn {
  border-color: var(--primary);
  background: rgba(237, 111, 92, 0.07);
}
.callout-warn .callout-label { color: var(--primary); }

.callout-note {
  border-color: #5a8a5a;
  background: rgba(90, 138, 90, 0.07);
}
.callout-note .callout-label { color: #5a8a5a; }

html.dark-mode .callout-note  { background: rgba(90, 138, 90, 0.13); }
html.dark-mode .callout-warn  { background: rgba(237, 111, 92, 0.13); }
html.dark-mode .callout-note .callout-label { color: #7fc47f; }

/* ─────────────────────────────────────────────────────────────
   TABELLA RIEPILOGO
   ───────────────────────────────────────────────────────────── */

.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8em;
  margin-top: 0.6em;
}

.summary-table th {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  border-bottom: 2px solid var(--primary);
  text-align: left;
}

.summary-table td {
  padding: 6px 14px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.summary-table tr:nth-child(even) td {
  background: rgba(44, 37, 32, 0.03);
}

html.dark-mode .summary-table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.04);
}
html.dark-mode .summary-table td {
  border-bottom-color: rgba(224, 224, 224, 0.1);
}

/* ─────────────────────────────────────────────────────────────
   SLIDE CITAZIONE (sfondo coral, testo bianco)
   ───────────────────────────────────────────────────────────── */

.reveal section.quote-slide {
  color: #ffffff;
}

.reveal section.quote-slide h1,
.reveal section.quote-slide h2,
.reveal section.quote-slide h3,
.reveal section.quote-slide p,
.reveal section.quote-slide a {
  color: #ffffff !important;
}

.reveal section.quote-slide .math-of-things-link {
  color: rgba(255, 255, 255, 0.75) !important;
}

.reveal section.quote-slide .math-of-things-link:hover {
  color: #ffffff !important;
}

/* ─────────────────────────────────────────────────────────────
   TESTO ATTENUATO — usa variabile per dark mode
   ───────────────────────────────────────────────────────────── */

:root {
  --text-muted: rgba(44, 37, 32, 0.78);
}

html.dark-mode {
  --text-muted: rgba(224, 224, 224, 0.72);
}

.text-muted {
  color: var(--text-muted);
}

/* Fix dark mode: override inline styles hardcoded con colori scuri */
html.dark-mode .reveal section:not(.quote-slide) p {
  color: var(--text-dark) !important;
}

html.dark-mode .reveal section:not(.quote-slide) span {
  color: var(--text-dark) !important;
}

/* Ripristina colori speciali coral/verde */
html.dark-mode .reveal .callout-warn .callout-label,
html.dark-mode .reveal .example-label,
html.dark-mode .reveal .definition-block .label,
html.dark-mode .reveal section.title-slide .subtitle em,
html.dark-mode .reveal h1 em,
html.dark-mode .reveal h2 em,
html.dark-mode .reveal h3 em {
  color: var(--primary) !important;
}

html.dark-mode .reveal .callout-note .callout-label {
  color: #7fc47f !important;
}

html.dark-mode .reveal .math-of-things-link {
  color: var(--primary) !important;
}

html.dark-mode .reveal section.title-slide .subtitle {
  color: var(--primary) !important;
}

html.dark-mode .reveal .controls {
  color: #f08e7c;
}

html.dark-mode .reveal .progress {
  background: rgba(240, 142, 124, 0.3);
}

html.dark-mode .reveal .progress bar {
  background: #f08e7c;
}

html.dark-mode .title-slide > div[style*="margin-top: 2.5em"] {
  color: #e0e0e0 !important;
}

/* ─────────────────────────────────────────────────────────────
   LINK THE MATH OF THINGS
   ───────────────────────────────────────────────────────────── */

.math-of-things-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8em;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.math-of-things-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

html.dark-mode .math-of-things-link {
  color: #f08e7c;
}

html.dark-mode .math-of-things-link:hover {
  color: #ffb0a0;
}

/* Auto dark mode based on system preference */
@media (prefers-color-scheme: dark) {
  html:not(.light-mode) {
    --bg-light: var(--bg-dark);
    --text-light: var(--text-dark);
    --primary: #f08e7c;
  }

  html:not(.light-mode) .reveal-viewport {
    background: var(--bg-dark);
  }

  html:not(.light-mode) .reveal {
    color: var(--text-dark);
  }

  html:not(.light-mode) .reveal code {
    background: rgba(224, 224, 224, 0.15);
    color: #e0e0e0;
  }

  html:not(.light-mode) .definition-block {
    border-left-color: #f08e7c;
    background: rgba(240, 142, 124, 0.06);
  }

  html:not(.light-mode) .definition-block .label {
    color: #f08e7c;
  }
}