/* ==========================================
   Slide Presentation System — Base
   ========================================== */

/* Reset e Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #000;
  background: #fff;
  font-size: 18px;
}

/* Tipografia */
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 40px;
  line-height: 1.2;
}

h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-top: 80px;
  margin-bottom: 24px;
  padding-top: 20px;
  border-top: 1px solid #e0e0e0;
}

h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: 48px;
  margin-bottom: 16px;
}

p {
  margin-bottom: 20px;
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

code {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  background: #f5f5f5;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
  border: 1px solid #e0e0e0;
}

pre {
  background: #f5f5f5;
  padding: 20px;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
  overflow-x: auto;
  margin-bottom: 24px;
}

pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: 14px;
  line-height: 1.5;
}

/* Note/Info Box */
.info-box {
  background: #f0f7ff;
  border-left: 3px solid #3b82f6;
  padding: 20px 24px;
  margin: 24px 0;
}

.info-box h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.info-box p:last-child {
  margin-bottom: 0;
}

/* Demo Container */
.demo-container {
  border: 2px solid #000;
  border-radius: 4px;
  margin: 32px 0;
  overflow: hidden;
}

.demo-controls {
  background: #f5f5f5;
  padding: 16px 20px;
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.demo-area {
  padding: 24px;
  min-height: 200px;
  position: relative;
}

/* Controlli UI */
.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-label {
  font-size: 13px;
  font-weight: 500;
  color: #333;
}

/* Toggle Buttons */
.toggle-group {
  display: flex;
  border: 1px solid #000;
  border-radius: 4px;
  overflow: hidden;
}

.toggle-btn {
  background: #fff;
  border: none;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  border-right: 1px solid #000;
}

.toggle-btn:last-child {
  border-right: none;
}

.toggle-btn:hover {
  background: #f5f5f5;
}

.toggle-btn.active {
  background: #000;
  color: #fff;
}

/* Select Dropdown */
.demo-select {
  background: #fff;
  border: 1px solid #000;
  padding: 8px 12px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  border-radius: 4px;
  min-width: 140px;
}

.demo-select:focus {
  outline: 2px solid #000;
  outline-offset: 2px;
}

/* Range Slider */
.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 150px;
  height: 6px;
  background: #e0e0e0;
  border-radius: 3px;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: #000;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.range-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: #000;
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.range-value {
  font-size: 13px;
  font-weight: 600;
  min-width: 50px;
  text-align: right;
  font-family: monospace;
}

/* Checkbox Toggle */
.checkbox-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox-toggle input {
  width: 18px;
  height: 18px;
  accent-color: #000;
}

/* Tabella comparativa */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.comparison-table th,
.comparison-table td {
  border: 1px solid #000;
  padding: 12px;
  text-align: left;
}

.comparison-table th {
  background: #f5f5f5;
  font-weight: 600;
}

.comparison-table td {
  vertical-align: top;
}

/* Animazioni */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.demo-area {
  animation: fadeIn 0.3s ease;
}

/* ==========================================
   SISTEMA SLIDE PRESENTATION
   ========================================== */

/* Container principale slide */
.slides-container {
  position: fixed;
  inset: 0;
  overflow: hidden;
  background: #fff;
}

/* Singola slide */
.slide {
  position: absolute;
  inset: 0;
  display: none;
  overflow-y: auto;
  padding: 60px 80px 100px;
  background: #fff;
}

.slide.active {
  display: block;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Contenuto slide centrato */
.slide-content {
  max-width: 900px;
  margin: 0 auto;
}

/* Tipografia slide - piu grande per proiezione */
.slide h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 40px;
  line-height: 1.2;
  border-bottom: none;
}

.slide h2 {
  font-size: 2.2rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 32px;
  padding-top: 0;
  border-top: none;
}

.slide h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 20px;
}

.slide p {
  font-size: 1.2rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.slide ul, .slide ol {
  font-size: 1.2rem;
  line-height: 1.7;
  margin-bottom: 24px;
  padding-left: 32px;
}

.slide li {
  margin-bottom: 12px;
}

.slide code {
  font-size: 1.1rem;
  padding: 3px 8px;
  padding-left: 0;
}

.slide pre {
  font-size: 1rem;
  padding: 24px;
  margin: 32px 0;
}

.slide pre code {
  font-size: 1rem;
}

/* Info box in slide */
.slide .info-box {
  font-size: 1.1rem;
  padding: 24px 28px;
  margin: 32px 0;
}

.slide .info-box.warning {
  border-left-color: #f0c040;
  background: #fffdf5;
}

/* Navigazione slide */
.nav-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1000;
  width: 56px;
  height: 56px;
  font-size: 24px;
  background: #000;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.nav-btn:hover {
  background: #333;
  transform: translateY(-50%) scale(1.05);
}

.nav-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.nav-prev {
  left: 20px;
}

.nav-next {
  right: 20px;
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background: #666;
}

.nav-btn:disabled:hover {
  transform: translateY(-50%);
}

/* Progress bar */
.progress-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #e0e0e0;
  z-index: 1000;
}

.progress-fill {
  height: 100%;
  background: #000;
  transition: width 0.3s ease;
  width: 0;
}

/* Indicatore slide corrente */
.slide-indicator {
  position: fixed;
  bottom: 16px;
  right: 24px;
  font-size: 14px;
  color: #666;
  z-index: 1000;
  font-family: monospace;
}

/* Demo container in slide */
.slide .demo-container {
  margin: 24px 0;
}

/* Layout due colonne per slide */
.slide-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 32px 0;
}

.slide-columns.three {
  grid-template-columns: 1fr 1fr 1fr;
}

/* ==========================================
   INTESTAZIONI FISSE SU TUTTE LE SLIDE
   ========================================== */

.slide-header-left,
.slide-header-right,
.slide-footer-left {
  position: fixed;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 11px;
  color: #999;
  z-index: 1000;
}

.slide-header-left {
  top: 16px;
  left: 24px;
}

.slide-header-right {
  top: 16px;
  right: 24px;
}

.slide-footer-left {
  bottom: 16px;
  left: 24px;
}

/* ==========================================
   SLIDE COPERTINA
   ========================================== */

.slide-cover-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
}

.slide-cover-content h1 {
  font-size: 6rem;
  font-weight: 700;
  margin: 0;
}

.cover-subtitle {
  font-size: 1.5rem;
  color: #666;
  margin: 0 0 8px 0;
  font-weight: 400;
}

.cover-credit {
  position: fixed;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 11px;
  color: #999;
  text-align: center;
}

.cover-credit a {
  color: #666;
  text-decoration: underline;
}

.cover-credit a:hover {
  color: #333;
}

/* ==========================================
   SLIDE FINALE: GRAZIE
   ========================================== */

.slide-thanks-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
}

.slide-thanks-content h1 {
  font-size: 5rem;
  font-weight: 700;
  margin: 0;
}

.thanks-credit {
  position: fixed;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 11px;
  color: #999;
  text-align: center;
}

.thanks-credit a {
  color: #666;
  text-decoration: underline;
}

.thanks-credit a:hover {
  color: #333;
}

/* ==========================================
   SLIDE "PROVATE VOI!" (Demo Personali)
   ========================================== */

.slide-try {
  background: linear-gradient(135deg, #f0fff4 0%, #e6ffed 100%);
}

.try-badge {
  display: inline-block;
  background: #22c55e;
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.try-intro {
  font-size: 1.1rem;
  margin-bottom: 32px;
  color: #333;
}

.try-intro a {
  color: #16a34a;
  font-weight: 600;
}

.try-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

@media (max-width: 900px) {
  .try-columns {
    grid-template-columns: 1fr;
  }
}

.try-code h3,
.try-code-full h3,
.try-preview h3,
.try-preview-full h3,
.try-explore h3 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 16px;
  color: #166534;
}

.try-code pre,
.try-code-full pre {
  border: 2px solid #22c55e;
  margin-bottom: 16px;
}

.try-preview {
  background: #fff;
  border: 2px solid #22c55e;
  border-radius: 8px;
  padding: 20px;
}

.try-code-full {
  margin-bottom: 24px;
}

.try-preview-full {
  background: #fff;
  border: 2px solid #22c55e;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 24px;
}

.try-explore {
  background: #dcfce7;
  border-radius: 8px;
  padding: 24px;
}

.try-explore ul {
  margin: 0;
  padding-left: 24px;
}

.try-explore li {
  margin-bottom: 8px;
  color: #166534;
}

/* ==========================================
   SLIDE ESERCIZIO (Fine Sezione)
   ========================================== */

.slide-exercise {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.exercise-badge {
  display: inline-block;
  background: #3b82f6;
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.exercise-goal {
  margin-bottom: 32px;
}

.exercise-goal h3,
.exercise-guidelines h3,
.exercise-starter h3 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 16px;
  color: #1e40af;
}

.exercise-goal > p {
  margin-bottom: 24px;
}

.exercise-preview {
  background: #fff;
  border: 3px solid #3b82f6;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 8px;
}

.exercise-guidelines {
  background: #dbeafe;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 32px;
}

.exercise-guidelines ol {
  margin: 0;
  padding-left: 24px;
}

.exercise-guidelines li {
  margin-bottom: 8px;
  color: #1e40af;
}

.exercise-starter {
  margin-bottom: 24px;
}

.exercise-starter pre {
  background: #fff;
  border: 2px solid #3b82f6;
}

.exercise-solution {
  background: #fff;
  border: 2px solid #3b82f6;
  border-radius: 8px;
  overflow: hidden;
}

.exercise-solution summary {
  padding: 16px 24px;
  background: #3b82f6;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.exercise-solution summary::before {
  content: "▶ ";
}

.exercise-solution[open] summary::before {
  content: "▼ ";
}

.exercise-solution pre {
  margin: 0;
  border: none;
  border-radius: 0;
}

/* Riepilogo tabella */
.summary-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 1rem;
}

.summary-table th,
.summary-table td {
  border: 1px solid #000;
  padding: 12px 16px;
  text-align: left;
}

.summary-table th {
  background: #f5f5f5;
  font-weight: 600;
}

.summary-table td code {
  font-size: 0.9rem;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1200px) {
  .slide {
    padding: 40px 60px 80px;
  }

  .slide h1 {
    font-size: 2.5rem;
  }

  .slide h2 {
    font-size: 1.8rem;
  }

  .slide p, .slide ul, .slide ol {
    font-size: 1.1rem;
  }

  .nav-btn {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
}

@media (max-width: 900px) {
  .slide {
    padding: 32px 40px 80px;
  }

  .slide-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .nav-prev {
    left: 10px;
  }

  .nav-next {
    right: 10px;
  }
}

/* ==========================================
   COVER TAGLINE
   ========================================== */

.cover-tagline {
  font-size: 1.3rem;
  color: #666;
  margin-top: 16px;
  font-weight: 400;
}

/* ==========================================
   LAYOUT CARDS (Anatomia Form)
   ========================================== */

.layout-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 32px 0;
}

@media (max-width: 900px) {
  .layout-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.layout-card {
  background: #f8f9fa;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.layout-card h3 {
  font-size: 1.1rem;
  margin: 0 0 8px 0;
}

.layout-card h3 code {
  display: inline;
  margin-bottom: 0;
}

.layout-card p {
  font-size: 0.9rem;
  margin: 0;
  color: #555;
  margin-top: auto;
  padding-top: 8px;
}


/* ==========================================
   RECAP TABLE (Riepilogo)
   ========================================== */

.recap-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 1rem;
}

.recap-table th,
.recap-table td {
  border: 1px solid #000;
  padding: 10px 14px;
  text-align: left;
}

.recap-table th {
  background: #f5f5f5;
  font-weight: 600;
}

.recap-table td code {
  font-size: 0.9rem;
}

/* ==========================================
   SLIDE INDEX MODAL
   ========================================== */

/* Trigger link */
.slide-index-trigger {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 12px;
  color: #999;
  text-decoration: none;
  padding: 4px 12px;
  border: 1px solid #ddd;
  border-radius: 12px;
  background: #fff;
  transition: all 0.2s;
}

.slide-index-trigger:hover {
  color: #333;
  border-color: #999;
  background: #f5f5f5;
}

/* Dialog */
.slide-index-modal {
  max-width: 560px;
  width: 90vw;
  max-height: 70vh;
  margin: auto;
  border: none;
  border-radius: 12px;
  padding: 0;
  background: #fff;
  color: #000;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.slide-index-modal[open] {
  display: flex;
  flex-direction: column;
  animation: slideIndexFadeIn 0.15s ease;
}

.slide-index-modal::backdrop {
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
}

@keyframes slideIndexFadeIn {
  from { opacity: 0; transform: scale(0.96) translateY(-8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Modal header */
.slide-index-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid #eee;
}

.slide-index-modal-header h3 {
  margin: 0;
  font-size: 1rem;
  flex: 1;
}

/* Shortcut hint */
.slide-index-shortcut-hint {
  font-size: 11px;
  color: #999;
  background: #f0f0f0;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: monospace;
}

/* Close button */
.slide-index-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #999;
  padding: 0 4px;
  line-height: 1;
}

.slide-index-close:hover {
  color: #333;
}

/* Search input */
.slide-index-search {
  display: block;
  width: 100%;
  padding: 10px 20px;
  border: none;
  border-bottom: 1px solid #eee;
  font-size: 14px;
  outline: none;
  background: #fafafa;
  box-sizing: border-box;
}

.slide-index-search:focus {
  background: #fff;
}

/* Slide list */
.slide-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
}

/* List items */
.slide-index-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 20px;
  cursor: pointer;
  transition: background 0.1s;
  font-size: 14px;
}

.slide-index-list li:hover {
  background: #f5f5f5;
}

/* Slide number */
.slide-index-number {
  color: #999;
  font-family: monospace;
  font-size: 12px;
  min-width: 28px;
  text-align: right;
  flex-shrink: 0;
}

/* Slide title */
.slide-index-title {
  flex: 1;
}

/* Slide type badge */
.slide-index-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  text-transform: uppercase;
  font-weight: 600;
  flex-shrink: 0;
}

.slide-index-badge.try {
  background: #e8f5e9;
  color: #2e7d32;
}

.slide-index-badge.exercise {
  background: #e3f2fd;
  color: #1565c0;
}

.slide-index-badge.warning {
  background: #fff8e1;
  color: #f57f17;
}

.slide-index-badge.cover {
  background: #f3e5f5;
  color: #7b1fa2;
}

/* Current slide highlight */
.slide-index-list li.current {
  background: #f0f7ff;
  font-weight: 600;
}

.slide-index-list li.current .slide-index-number {
  color: #000;
}

/* Hidden items (filtered by search) */
.slide-index-list li.hidden {
  display: none;
}