/* ==========================================================================
   GIULIO SOMALVICO - PRESENTAZIONE "ARTISTA POLIEDRICO"
   Design System & Luxury Museum Aesthetics
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700;900&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400;1,600&family=Outfit:wght@200;300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0d0d0f;
  --bg-secondary: #141418;
  --bg-card: rgba(26, 26, 32, 0.75);
  --bg-card-hover: rgba(35, 35, 45, 0.9);
  --bg-glass: rgba(18, 18, 22, 0.65);
  
  --text-primary: #f5f2eb;
  --text-secondary: #b8b3a7;
  --text-muted: #7d786d;
  --text-inverted: #0d0d0f;

  --accent-gold: #c5a880;
  --accent-gold-light: #e6cb9d;
  --accent-gold-dark: #8c734b;
  --accent-gold-glow: rgba(197, 168, 128, 0.25);
  
  --accent-amber: #d97706;
  --accent-sand: #d6cfc4;
  --accent-charcoal: #232220;
  
  --border-subtle: rgba(197, 168, 128, 0.15);
  --border-gold: rgba(197, 168, 128, 0.4);
  --border-light: rgba(255, 255, 255, 0.08);

  --shadow-lux: 0 20px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(197, 168, 128, 0.15);

  --font-serif: 'Cormorant Garamond', 'Georgia', serif;
  --font-display: 'Cinzel', serif;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

  --transition-smooth: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease-out;
  
  --slide-aspect: 16 / 9;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Texture Background Overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 50% 50%, rgba(30, 28, 24, 0.3) 0%, rgba(13, 13, 15, 0.85) 100%);
  pointer-events: none;
  z-index: 1;
}

.canvas-particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  opacity: 0.6;
}

/* Presentation Master Container */
.presentation-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 10;
  overflow: hidden;
}

/* Top App Header / Bar */
.pres-header {
  height: 64px;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 50;
  transition: var(--transition-smooth);
}

.pres-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pres-brand-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.badge-poliedrico {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, rgba(197, 168, 128, 0.2) 0%, rgba(140, 115, 75, 0.3) 100%);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold-light);
  padding: 0.25rem 0.75rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: 9999px;
  box-shadow: 0 0 15px var(--accent-gold-glow);
  position: relative;
  overflow: hidden;
}

.badge-poliedrico::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transform: rotate(30deg);
  animation: badgeShine 4s infinite linear;
}

@keyframes badgeShine {
  0% { transform: translateX(-100%) rotate(30deg); }
  20%, 100% { transform: translateX(100%) rotate(30deg); }
}

.pres-controls-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-go-to-site {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, rgba(197, 168, 128, 0.2) 0%, rgba(140, 115, 75, 0.35) 100%);
  border: 1px solid var(--accent-gold);
  color: #ffffff;
  padding: 0.42rem 0.9rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: var(--transition-fast);
  box-shadow: 0 0 14px rgba(197, 168, 128, 0.2);
  white-space: nowrap;
}

.btn-go-to-site:hover {
  background: var(--accent-gold);
  color: #0d0d0f;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(197, 168, 128, 0.4);
}

.btn-go-to-site svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
}

.ctrl-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.ctrl-btn:hover {
  background: rgba(197, 168, 128, 0.15);
  border-color: var(--accent-gold);
  color: var(--accent-gold-light);
  transform: translateY(-1px);
}

.ctrl-btn.active {
  background: var(--accent-gold);
  color: var(--text-inverted);
  border-color: var(--accent-gold-light);
}

.ctrl-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.slide-counter {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  padding: 0 0.75rem;
}

.slide-counter .current-num {
  color: var(--accent-gold-light);
  font-weight: 700;
}

/* Slide Deck Container */
.slides-viewport {
  flex: 1;
  position: relative;
  width: 100%;
  height: calc(100vh - 64px - 48px);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 4rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(0.96) translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.6s ease;
  z-index: 5;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: scale(1) translateY(0);
  z-index: 10;
}

.slide.prev-slide {
  transform: scale(0.96) translateY(-20px);
}

.slide-content-wrapper {
  max-width: 1380px;
  width: 100%;
  height: 100%;
  max-height: 820px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

/* ==========================================================================
   SLIDE 1: FRONTESPIZIO (Hero)
   ========================================================================== */
.slide-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 3.5rem;
  align-items: center;
  width: 100%;
}

.hero-text-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-subtag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.45em;
  color: var(--accent-gold);
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.hero-subtag::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent-gold);
  opacity: 0.6;
}

.hero-subtag::after {
  display: none;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 0%, #f3eee6 50%, #c5a880 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.25rem;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.hero-label-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(90deg, rgba(197, 168, 128, 0.15) 0%, rgba(140, 115, 75, 0.35) 50%, rgba(197, 168, 128, 0.15) 100%);
  border: 1.5px solid var(--accent-gold);
  padding: 0.45rem 1.4rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 25px var(--accent-gold-glow);
}

.hero-label-badge span {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #fff;
}

.hero-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.08rem, 1.4vw, 1.35rem);
  font-style: italic;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 0 2rem 0;
  line-height: 1.6;
}

.hero-actions-group {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  color: #0d0d0f;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.95rem 1.8rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(197, 168, 128, 0.3);
  transition: var(--transition-smooth);
}

.hero-cta-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 35px rgba(197, 168, 128, 0.45);
  background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--accent-gold) 100%);
}

.hero-site-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(197, 168, 128, 0.5);
  color: var(--accent-gold-light);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.95rem 1.8rem;
  border-radius: 6px;
  text-decoration: none;
  transition: var(--transition-smooth);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.hero-site-btn:hover {
  background: rgba(197, 168, 128, 0.2);
  border-color: var(--accent-gold);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(197, 168, 128, 0.25);
}

/* Hero media Showcase frame */
.hero-media-col {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-showcase-frame {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid rgba(197, 168, 128, 0.4);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 35px rgba(197, 168, 128, 0.15);
  max-width: 480px;
  width: 100%;
  transition: var(--transition-smooth);
}

.hero-showcase-frame:hover {
  border-color: var(--accent-gold);
  transform: translateY(-4px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.8), 0 0 50px rgba(197, 168, 128, 0.25);
}

.hero-frame-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-gold);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 5;
}

.hero-showcase-frame img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  filter: contrast(1.05) brightness(0.96);
  transition: transform 0.8s ease;
}

.hero-showcase-frame:hover img {
  transform: scale(1.03);
}

.hero-frame-caption {
  padding: 0.85rem 1.25rem;
  background: linear-gradient(180deg, rgba(20, 20, 24, 0.95) 0%, rgba(13, 13, 15, 0.98) 100%);
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hero-frame-caption .caption-name {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-gold-light);
  letter-spacing: 0.05em;
}

.hero-frame-caption .caption-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SLIDE 2: IDENTITÀ & VISIONE D'INSIEME
   ========================================================================== */
.slide-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.section-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
  display: block;
}

.slide-heading {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.2vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.slide-lead-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.stat-pills-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.stat-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 1.2rem 1rem;
  border-radius: 8px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-gold-light);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.vision-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 2.5rem;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lux);
}

.vision-card::before {
  content: '"';
  position: absolute;
  top: -20px;
  right: 20px;
  font-family: var(--font-serif);
  font-size: 10rem;
  color: rgba(197, 168, 128, 0.06);
  pointer-events: none;
}

.vision-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 1.2rem;
}

.vision-card-quote {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.vision-author {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ==========================================================================
   SLIDE 3: LA SLIDE CENTRALE - IL MAESTRO NEL SUO STUDIO (immagine.jpeg)
   ========================================================================== */
.slide-central-highlight {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3.5rem;
  align-items: center;
  width: 100%;
  height: 100%;
}

.image-showcase-container {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lux), 0 0 50px rgba(197, 168, 128, 0.18);
  border: 1.5px solid var(--accent-gold);
  background: #101014;
}

.image-showcase-container img {
  width: 100%;
  height: 100%;
  max-height: 540px;
  object-fit: cover;
  display: block;
  filter: contrast(1.05) saturate(1.05);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.image-showcase-container:hover img {
  transform: scale(1.03);
}

.image-overlay-badge {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  background: rgba(13, 13, 15, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-gold);
  padding: 0.5rem 1.2rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

.image-overlay-badge .badge-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
}

.image-overlay-badge span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-gold-light);
}

.image-caption-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(10, 10, 12, 0.95) 0%, rgba(10, 10, 12, 0.6) 70%, transparent 100%);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 2;
}

.image-caption-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-primary);
  font-style: italic;
}

.image-meta-tag {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.central-analysis-box {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.badge-central-mega {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(90deg, rgba(197, 168, 128, 0.2) 0%, rgba(217, 119, 6, 0.3) 100%);
  border: 1px solid var(--accent-gold);
  padding: 0.4rem 1.1rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-gold-light);
  box-shadow: 0 0 25px var(--accent-gold-glow);
}

.central-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 2.8vw, 2.8rem);
  line-height: 1.15;
  color: var(--text-primary);
}

.central-lead {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 0.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 0.9rem 1.2rem;
  border-radius: 8px;
  transition: var(--transition-fast);
}

.feature-item:hover {
  border-color: var(--accent-gold);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.feature-icon-box {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 6px;
  background: rgba(197, 168, 128, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold-light);
}

.feature-text-group h4 {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.feature-text-group p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* ==========================================================================
   SLIDE 4: LE 4 FASI DELL'EVOLUZIONE ARTISTICA (Timeline)
   ========================================================================== */
.timeline-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  margin-top: 2rem;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.timeline-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-gold);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(197, 168, 128, 0.15);
  background: var(--bg-card-hover);
}

.timeline-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-gold), transparent);
  border-radius: 10px 10px 0 0;
}

.timeline-phase-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-gold);
  margin-bottom: 0.4rem;
}

.timeline-phase-years {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.timeline-phase-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent-gold-light);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.timeline-phase-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.timeline-phase-tag {
  margin-top: 1.2rem;
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-gold);
  border-top: 1px solid var(--border-light);
  padding-top: 0.75rem;
}

/* ==========================================================================
   SLIDE 5: I 4 PILASTRI DELLA POLIEDRICITÀ (Tecniche e Mezzi)
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.pillar-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.pillar-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(197, 168, 128, 0.12);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold-light);
  margin-bottom: 1.5rem;
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  line-height: 1.2;
}

.pillar-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.2rem;
  flex: 1;
}

.pillar-materials {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  font-size: 0.72rem;
  color: var(--accent-gold-light);
  letter-spacing: 0.05em;
}

/* ==========================================================================
   SLIDE 6: ANTOLOGIA DELLE OPERE ICONICHE
   ========================================================================== */
.artworks-carousel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.artwork-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.artwork-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-gold);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
}

.artwork-preview-box {
  aspect-ratio: 4 / 3;
  width: 100%;
  position: relative;
  overflow: hidden;
  background: #18181c;
}

.artwork-art-render {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}

.artwork-card:hover .artwork-art-render {
  transform: scale(1.06);
}

.art-badge-period {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-gold-light);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.artwork-info-box {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.artwork-year {
  font-size: 0.72rem;
  color: var(--accent-gold);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 0.2rem;
}

.artwork-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.artwork-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   SLIDE 7: SPAZIO MUSEALE ED ESPOSIZIONI (immagine2.jpg)
   ========================================================================== */
.slide-exhibitions-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3.5rem;
  align-items: center;
}

.exhibitions-list-box {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-top: 1rem;
}

.exhibition-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 1.2rem 1.4rem;
  border-radius: 8px;
  transition: var(--transition-fast);
}

.exhibition-card:hover {
  border-color: var(--accent-gold);
  background: var(--bg-card-hover);
}

.exh-date {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.exh-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.exh-place {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SLIDE 8: CRITICA & ARCHIVIO RAGIONATO
   ========================================================================== */
.critics-archive-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  margin-top: 1.5rem;
  align-items: start;
}

.critic-quote-box {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-gold);
  padding: 1.8rem 2rem;
  border-radius: 0 10px 10px 0;
  margin-bottom: 1.2rem;
}

.critic-text {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 0.8rem;
}

.critic-author {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  font-weight: 600;
}

.archive-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-lux);
}

.archive-box-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold-light);
  margin-bottom: 1rem;
}

.archive-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.2rem;
}

.archive-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.archive-pill {
  font-size: 0.72rem;
  background: rgba(197, 168, 128, 0.12);
  border: 1px solid var(--border-subtle);
  color: var(--accent-sand);
  padding: 0.35rem 0.8rem;
  border-radius: 4px;
}

/* ==========================================================================
   SLIDE 9: CONCLUSIONE & CONTATTI
   ========================================================================== */
.slide-contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.contact-card-box {
  background: var(--bg-card);
  border: 1.5px solid var(--accent-gold);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: var(--shadow-lux), var(--shadow-glow);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(197, 168, 128, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold-light);
}

.contact-text h5 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-gold);
  margin-bottom: 0.2rem;
}

.contact-text p {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ==========================================================================
   BOTTOM FOOTER BAR & PROGRESS
   ========================================================================== */
.pres-footer {
  height: 48px;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 50;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.pres-progress-track {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.05);
}

.pres-progress-fill {
  height: 100%;
  width: 11.11%;
  background: linear-gradient(90deg, var(--accent-gold-dark), var(--accent-gold-light));
  box-shadow: 0 0 10px var(--accent-gold);
  transition: width 0.4s ease;
}

.nav-hint-text {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.kbd-tag {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 0.1rem 0.45rem;
  font-size: 0.68rem;
  color: var(--accent-sand);
  font-family: monospace;
}

.pres-nav-arrows {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-arrow-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav-arrow-btn:hover:not(:disabled) {
  background: var(--accent-gold);
  color: #0d0d0f;
  border-color: var(--accent-gold-light);
}

.nav-arrow-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ==========================================================================
   MODALS: OVERVIEW GRID & SPEAKER NOTES
   ========================================================================== */
.overview-modal, .notes-modal, .keyboard-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 2rem;
}

.overview-modal.active, .notes-modal.active, .keyboard-modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-inner-container {
  max-width: 1200px;
  width: 100%;
  max-height: 85vh;
  background: var(--bg-secondary);
  border: 1px solid var(--border-gold);
  border-radius: 16px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.modal-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.15em;
  color: var(--accent-gold-light);
  text-transform: uppercase;
}

.modal-close-btn {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  border-color: var(--accent-gold);
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.2rem;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.overview-card:hover, .overview-card.current {
  border-color: var(--accent-gold);
  background: rgba(197, 168, 128, 0.15);
  transform: scale(1.02);
}

.overview-card.current {
  box-shadow: 0 0 20px var(--accent-gold-glow);
}

.overview-card-num {
  font-size: 0.72rem;
  color: var(--accent-gold);
  font-weight: 700;
  letter-spacing: 0.2em;
}

.overview-card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Speaker Notes Styling */
.notes-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  overflow-y: auto;
  padding-right: 1rem;
}

.notes-body h4 {
  font-family: var(--font-serif);
  color: var(--accent-gold-light);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.notes-body ul {
  list-style: disc;
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.notes-body li {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE OPTIMIZATION
   ========================================================================== */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .slide {
    padding: 2rem 2.5rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    align-items: flex-start;
  }

  .slide-content-wrapper {
    height: auto;
    min-height: 100%;
    max-height: none;
    justify-content: flex-start;
    padding-bottom: 2rem;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }

  .hero-text-col {
    align-items: center;
    text-align: center;
  }

  .hero-quote {
    margin: 0 auto 1.8rem;
  }

  .hero-actions-group {
    justify-content: center;
  }

  .hero-showcase-frame {
    max-width: 520px;
    margin: 0 auto;
  }

  .hero-showcase-frame img {
    height: 320px;
  }

  .slide-grid-2, 
  .slide-central-highlight, 
  .slide-exhibitions-grid, 
  .slide-contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline-cards-grid, 
  .pillars-grid, 
  .artworks-carousel-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .image-showcase-container img {
    max-height: 320px;
  }
}

/* Mobile & Small Tablets (max-width: 768px) */
@media (max-width: 768px) {
  /* 1. Header fisso e minimale: mostra SOLO 'GIULIO SOMALVICO' e 'Vai al Sito' */
  .pres-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 56px;
    padding: 0 1rem;
    z-index: 80;
    background: rgba(13, 13, 15, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .pres-brand {
    display: flex;
    align-items: center;
  }

  .pres-brand-title {
    font-size: 0.92rem;
    letter-spacing: 0.14em;
    font-weight: 700;
  }

  /* Nascondi badge poliedrico nell'header su mobile */
  .badge-poliedrico {
    display: none !important;
  }

  /* Mostra solo il bottone 'Vai al Sito' nei controlli a destra */
  .pres-controls-right {
    gap: 0;
  }

  .btn-go-to-site {
    display: inline-flex !important;
    padding: 0.38rem 0.75rem;
    font-size: 0.74rem;
    gap: 0.35rem;
  }

  .btn-go-to-site svg {
    width: 14px;
    height: 14px;
  }

  /* Nascondi contatore e tutti i pulsanti di controllo secondari su mobile */
  .slide-counter,
  .ctrl-btn {
    display: none !important;
  }

  /* 2. Gestione viewport e contenuti in tutte le slide per non coprire l'header */
  .slides-viewport {
    height: calc(100vh - 56px - 48px);
    margin-top: 56px;
    position: relative;
    width: 100%;
    overflow: hidden;
  }

  .slide {
    padding: 1.5rem 1rem 4rem 1rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
    align-items: flex-start;
  }

  .slide-content-wrapper {
    height: auto;
    min-height: 100%;
    max-height: none;
    justify-content: flex-start;
    gap: 1.25rem;
    padding-bottom: 2.5rem;
  }

  /* Typography on mobile */
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
  }

  .hero-subtag {
    font-size: 0.72rem;
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
    justify-content: center;
  }

  .hero-label-badge {
    padding: 0.35rem 1.1rem;
    margin-bottom: 1.25rem;
  }

  .hero-label-badge span {
    font-size: 0.78rem;
    letter-spacing: 0.2em;
  }

  .hero-quote {
    font-size: 1.05rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
  }

  .hero-actions-group {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-cta-btn,
  .hero-site-btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    font-size: 0.78rem;
  }

  .hero-showcase-frame img {
    height: 240px;
  }

  .hero-frame-caption {
    padding: 0.75rem 1rem;
  }

  .slide-heading {
    font-size: clamp(1.4rem, 6vw, 2rem);
    line-height: 1.2;
    margin-bottom: 0.75rem;
  }

  .slide-lead-text {
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 1rem;
  }

  .stat-pills-row {
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .stat-pill {
    flex: 1 1 calc(33.333% - 0.6rem);
    min-width: 80px;
    padding: 0.5rem 0.75rem;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .stat-label {
    font-size: 0.65rem;
  }

  .vision-card {
    padding: 1.25rem;
  }

  .vision-card-title {
    font-size: 1.1rem;
  }

  .vision-card-quote {
    font-size: 0.98rem;
  }

  /* 4. Slide 3: Rimozione etichetta sovrapposta alla foto su mobile */
  #slide-3 .image-overlay-badge {
    display: none !important;
  }

  /* Single-column grids on smartphones */
  .timeline-cards-grid, 
  .pillars-grid, 
  .artworks-carousel-grid, 
  .overview-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .image-showcase-container img {
    max-height: 230px;
  }

  .central-title {
    font-size: 1.35rem;
  }

  .central-lead {
    font-size: 0.95rem;
  }

  .features-list {
    gap: 1rem;
  }

  .feature-item {
    gap: 0.85rem;
  }

  .artwork-img-box img {
    height: 180px;
  }

  /* 3. Slide 8: gestione grafica con ogni riquadro uno sotto l'altro */
  .critics-archive-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 1.25rem !important;
    margin-top: 1rem !important;
    width: 100% !important;
  }

  .critics-archive-grid > div:first-child {
    display: flex !important;
    flex-direction: column !important;
    gap: 1.25rem !important;
    width: 100% !important;
  }

  .critic-quote-box {
    margin-bottom: 0 !important;
    padding: 1.25rem 1.4rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .critic-text {
    font-size: 1.02rem !important;
    line-height: 1.55 !important;
  }

  .archive-box {
    padding: 1.4rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .archive-box-title {
    font-size: 1rem !important;
    margin-bottom: 0.75rem !important;
  }

  .archive-text {
    font-size: 0.92rem !important;
    line-height: 1.6 !important;
    margin-bottom: 1.2rem !important;
  }

  .archive-badge-row {
    flex-wrap: wrap !important;
    gap: 0.5rem !important;
  }

  .archive-pill {
    font-size: 0.72rem !important;
    padding: 0.35rem 0.75rem !important;
  }

  .contact-card-box {
    padding: 1.25rem;
    gap: 1rem;
  }

  .contact-item {
    padding: 0.75rem;
  }

  /* Footer on mobile */
  .pres-footer {
    height: 48px;
    padding: 0 0.85rem;
  }

  .nav-hint-text {
    display: none;
  }

  .pres-nav-arrows {
    margin-left: auto;
  }

  .nav-arrow-btn {
    width: 36px;
    height: 36px;
  }
}

/* Print Styles for PDF Handout Generation */
@media print {
  body {
    background: #ffffff !important;
    color: #111111 !important;
    overflow: visible !important;
  }
  .pres-header, .pres-footer, .canvas-particles, .noise-overlay, .modal-inner-container {
    display: none !important;
  }
  .presentation-container, .slides-viewport {
    height: auto !important;
    overflow: visible !important;
  }
  .slide {
    position: relative !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    page-break-after: always;
    break-after: page;
    height: 100vh !important;
    padding: 2cm !important;
  }
  .slide-heading, .central-title, .hero-title {
    color: #111111 !important;
    -webkit-text-fill-color: #111111 !important;
  }
  .slide-lead-text, .feature-text-group p, .timeline-phase-desc, .pillar-desc {
    color: #333333 !important;
  }
  .vision-card, .timeline-card, .pillar-card, .artwork-card, .exhibition-card, .contact-card-box {
    background: #f9f9f9 !important;
    border: 1px solid #ddd !important;
    color: #111 !important;
  }
}