:root {
  --sand: #f4efe6;
  --muted: #6b6b6b;
  --accent: #6bb8f3;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: 'Poppins', system-ui, Arial;
  background: linear-gradient(180deg, var(--sand), #fbfaf8);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
main { overflow-x: hidden; }

/** Header **/
header {
  position: fixed;
  left: 0; right: 0; top: 12px;
  z-index: 1200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 2.2rem;
  width: calc(100% - 48px);
  max-width: 1400px;
  background: rgba(255,255,255,0.30);
  backdrop-filter: blur(6px) saturate(110%);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(12,14,20,0.07);
  border: 1px solid rgba(255,255,255,0.35);
}

.brand { font-weight: 700; }
nav a { margin-left: 14px; font-size: 0.95rem; color: #1b2b3a; opacity: 0.95; }
nav a:hover { color: var(--accent); }

/** Hero **/
.hero {
  width:100%;
  height: 92vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background: linear-gradient(90deg, rgba(244,239,230,1) 0 4vw, rgba(255,255,255,1) 4vw 96vw, rgba(244,239,230,1) 96vw 100%);
  position: relative;
}

.hero-title {
  font-family: 'Playfair Display', serif;
}

.poster {
  width: min(1200px, 96%);
  height: calc(92vh - 4vh);
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 18px 60px rgba(20,24,30,0.08);
}

.poster img {
  width: calc(100% - 6vw);
  height: auto;
  max-height: 88vh;
  object-fit: contain;
  display:block;
  margin: 0 auto;
}

.poster .title {
  position:absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255,255,255,0.72);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight:600;
  color: #111;
  box-shadow: 0 8px 20px rgba(10,12,18,0.06);
  font-size: clamp(1rem, 1.8vw, 1.4rem);
  backdrop-filter: blur(3px);
}

/* === Epic Cinematic-Scientific Hero === */
.hybrid-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  background: linear-gradient(90deg, #f4efe6 0%, #ffffff 100%);
  overflow: hidden;
  padding: 8vh 5vw;
  position: relative;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1600px;
  width: 100%;
  gap: 5vw;
}

.hero-left {
  flex: 1 1 60%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.poster {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  width: 100%;
  box-shadow: 0 18px 50px rgba(0,0,0,0.2);
  background: radial-gradient(circle at 60% 40%, rgba(0,0,0,0.15), transparent 80%);
}

#heroImage {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  transform: scale(1.03);
}

#neuralOverlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.75;
}

.hero-right {
  flex: 1 1 40%;
  text-align: left;
  color: #1c1c1c;
  z-index: 5;
}

.hero-title {
  font-weight: 800;
  font-size: clamp(2rem, 3.6vw, 3rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: #0e1b2b;
  text-align: center;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.7;
  color: #444;
  margin-bottom: 40px;
  max-width: 540px;
}

.cta-scroll {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: relative;
  transition: transform 0.25s ease, color 0.25s ease;
}

.cta-scroll:hover {
  color: #338dd8;
  transform: translateY(-2px);
}

.scroll-icon {
  font-size: 1.4rem;
  animation: bounce 1.8s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

@media (max-width: 900px) {
  .hero-content { flex-direction: column-reverse; text-align: center; }
  .hero-right { flex: 1 1 100%; text-align: center; }
  .hero-left { flex: 1 1 100%; }
  .poster { width: 100%; max-width: 600px; }
}


/** General sections **/
section { padding:7vh 4vw; max-width:1400px; margin: 0 auto; }
.intro { margin-top: 40px; color: #222; }
.section-subtitle {
  font-size: 1.15rem;
  color: rgba(0,0,0,0.65);
  text-align: center;
  margin-top: -8px;
  margin-bottom: 24px;
  letter-spacing: 0.2px;
  line-height: 1.5;
}


/* === Section Layout & Typography === */
section {
  padding: 7vh 5vw;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  background-color: #fff;
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.04);
  margin-top: 60px;
}

section:nth-of-type(even) {
  background-color: var(--sand);
}

.section-title {
  font-family: 'Poppins', system-ui, sans-serif;
  font-weight: 700;
  font-size: clamp(1.2rem, 2.1vw, 1.6rem);
  color: #111;
  margin-bottom: 14px;
  text-align: center;
}

.section-desc {
  font-family: 'Poppins', system-ui, sans-serif;
  font-weight: 400;
  font-size: 1rem;
  color: #333;
  line-height: 1.8;
  text-align: justify;
  max-width: 900px;
  margin: 0 auto 20px auto;
}
.section-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: #555;
  text-align: center;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
  font-weight: 400;
  opacity: 0.85;
}

.intro {
  background: linear-gradient(180deg, #f4efe6 0%, #fbfaf8 100%);
  padding: 8vh 4vw;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  margin-top: 60px;
}

.intro .section-desc {
  max-width: 1000px;
  text-align: justify;
  margin: 0 auto 20px auto;
  line-height: 1.7;
  color: #333;
}


/* === Category Cards for Manual Notations === */
.manual-notations {
  background-color: #fbfaf8;
  box-shadow: 0 10px 36px rgba(0,0,0,0.06);
  border-radius: 18px;
  padding: 70px 6vw;
}

.subsection-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #222;
  text-align: left;
  margin-top: 42px;
  margin-bottom: 14px;
  border-left: 5px solid var(--accent);
  padding-left: 10px;
}

.category-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.04);
  padding: 20px 28px;
  margin-bottom: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.category-list {
  margin-left: 1.4em;
  line-height: 1.7;
  color: #333;
}
.category-list li {
  margin-bottom: 8px;
}


.computational-models {
  background: var(--sand);
  padding: 7vh 4vw;
  border-top: 1px solid rgba(0,0,0,0.05);
}

.computational-models .category-card {
  max-width: 1100px;
  margin: 0 auto 32px auto;
  text-align: justify;
  position: relative;
}

.computational-models canvas {
  display: block;
  margin: 20px auto 0 auto;
  border-radius: 10px;
  background: linear-gradient(180deg,#f2f2f2,#e6e6e6);
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}


/* === Harmonize alternating backgrounds === */
body {
  background: linear-gradient(180deg, #f8f7f5 0%, #fefefe 100%);
}

main > section {
  margin-bottom: 60px;
}


/** Streams **/
.streams { display:flex; flex-direction:column; gap:18px; width:100%; }

/* Film strip video */
.film-strip {
  position: relative;
  height: 240px;
  padding: 14px;
  border-radius: 12px;
  background-color: #000;
  overflow: hidden;
  border: 2px solid #000;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  z-index: 1; /* serve solo come contesto per ::before/::after */
}

.film-strip::before,
.film-strip::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 16px;
  background: repeating-linear-gradient(
    90deg,
    #000 0 6px,
    var(--sand) 6px 16px
  );
  z-index: 2; /* quadratini decorativi sopra sfondo */
}

/* Tag sopra tutto nello strip video */
.film-strip .tag {
  position: absolute;
  z-index: 5; /* sopra i quadratini */
}

.film-strip::before { top: 0; }
.film-strip::after  { bottom: 0; }

.film-strip .frames-bg {
  position: absolute;
  top: 16px;
  left: 0;
  width: 200%;
  height: calc(100% - 32px);
  display: flex;
  gap: 20px;
  z-index: 1;
}

.film-strip .frames-bg .cell {
  width: 190px;
  height: 100%;
  background-color: #000;
  border-radius: 4px;
  flex-shrink: 0;
}

.frames {
  display: flex;
  gap: 20px;
  align-items: center;
  position: absolute;
  top: 16px;
  left: 0;
  height: calc(100% - 32px);
  will-change: transform;
  z-index: 3;
}

.frames img {
  width: 190px;
  height: 190px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  flex-shrink: 0;
  position: relative;
}

/* Audio strip */
/* Audio strip */
.audio-strip {
  position: relative;
  height: 140px;
  border-radius: 8px; /* ridotto da 12px → 8px */
  overflow: visible;  /* consentiamo ai tag di uscire */
  background-color: #fff;
  border: 2px solid #000; /* bordo nero sottile */
  padding: 10px;
  display: flex;
  align-items: center;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  z-index: 1; /* contesto */
}

/* Canvas onda sonora */
canvas#wave {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 6px; /* più coerente col nuovo bordo */
  background: linear-gradient(180deg, #e9e2d6, #f4efe6);
  position: relative;
  z-index: 1;
}

/* Tag audio */
.audio-strip .tag {
  position: absolute;
  z-index: 5; /* sopra al bordo e all’onda */
  pointer-events: none;
}

/* Floating tags */
.tag {
  position: absolute;
  padding:8px 12px;
  border-radius:999px;
  color:#fff; font-weight:700; font-size:0.95rem;
  pointer-events:none; white-space:nowrap;
  box-shadow:0 10px 22px rgba(10,12,18,0.12);
  transform-origin:center;
  opacity:0;
  will-change:transform,opacity,left,top;
}

/* Category colors */
.tag.animals   { background: linear-gradient(90deg,#7fcf9b,#4fa77a); }
.tag.bodyparts { background: linear-gradient(90deg,#f7c6a3,#f1a77d); color:#2b1200;}
.tag.humanface { background: linear-gradient(90deg,#a3c9ff,#6b9efc); color: #fff;}
.tag.animalface { background: linear-gradient(90deg,#8bd6c6,#4fb39a); color:#fff;}
.tag.houses   { background: linear-gradient(90deg,#ffd486,#ffb347); color:#2b1b00;}
.tag.location { background: linear-gradient(90deg,#d6c6ff,#b89ef8); color:#24124a;}
.tag.landscape{ background: linear-gradient(90deg,#c6e7ff,#89c9ff); color:#07203a;}
.tag.objects  { background: linear-gradient(90deg,#d9b7ff,#b88ef8); color:#2b0a43;}
.tag.person   { background: linear-gradient(90deg,#f7a3b6,#f07a9e); color:#3a0b1a;}
.tag.vehicles { background: linear-gradient(90deg,#ffb2b2,#ff8e8e); color:#3a0202;}
.tag.scenes   { background: linear-gradient(90deg,#9be7d6,#6fd1b7); color:#053227;}
.tag.cuts     { background: linear-gradient(90deg,#f2e3b8,#e7c87f); color:#332a05;}
.tag.subtitles{ background: linear-gradient(90deg,#e8f0ff,#cfe2ff); color:#04204a;}
.tag.text     { background: linear-gradient(90deg,#f8dfc8,#f2c9a1); color:#3b2a0f; }

/* Audio category colors */
.tag.audio.animals    { background: linear-gradient(90deg,#69b97f,#3e8f5f); }
.tag.audio.objects    { background: linear-gradient(90deg,#c78feb,#a767e9); }
.tag.audio.person     { background: linear-gradient(90deg,#e88aa0,#d85b82); }
.tag.audio.vehicles   { background: linear-gradient(90deg,#ff9f9f,#ff6b6b); }
.tag.audio.audiodescription { background: linear-gradient(90deg,#cfe3ff,#9fc9ff); color:#04204a;}
.tag.audio.dialogue   { background: linear-gradient(90deg,#9be7d6,#6fd1b7); color:#053227;}
.tag.audio.soundtrack { background: linear-gradient(90deg,#bfe0ff,#8fbfff); color:#073252;}

/* Responsive adjustments */
@media (max-width:900px){
  .frames img { width:130px; height:120px; }
  .film-strip { height:150px; }
  .audio-strip { height:120px; }
  header{ padding:0.45rem 1rem; width:calc(100% - 20px) }
  .poster img{ width: calc(100% - 8vw); }
}

/* Dataset info */
.dataset-extended { margin-top:50px; }
.charts-row {
  display:flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.chart-container {
  flex: 1 1 300px;
  background: #fff;
  border-radius:10px;
  padding: 18px 14px;
  box-shadow: 0 8px 22px rgba(0,0,0,0.05);
  opacity: 0;
  transform: translateY(40px);
}
.stimulus-icons {
  display:flex;
  justify-content:center;
  gap:40px;
  margin-top:28px;
  opacity: 0;
  transform: translateY(40px);
}
.stimulus-icons div {
  text-align:center;
  font-size:1rem;
  color:#333;
}
.stimulus-icons span {
  display:block;
  font-size:2rem;
}
svg text { font-family:'Poppins',sans-serif; font-size:0.8rem; fill:#333; }
svg rect { fill: var(--accent); rx:4; }
svg line { stroke: #ddd; stroke-width:1; }

.section-desc a {
  color: #0066cc;        /* or any visible color */
  text-decoration: underline;
  cursor: pointer;
}


footer {
  background: #fff;
  box-shadow: 0 -6px 20px rgba(0,0,0,0.03);
  border-top: 1px solid rgba(0,0,0,0.05);
  padding: 2vh 4vw;
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}