/* ═══════════════════════════════════════════════════════
   NOSSO INFINITO — Cinematic Premium Styles
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Great+Vibes&display=swap');

:root {
  --bg-void: #030008;
  --bg-deep: #08001a;
  --rose: #ff6b9d;
  --rose-soft: #ff8fb3;
  --rose-deep: #c94b7a;
  --rose-glow: rgba(255, 107, 157, 0.5);
  --gold: #d4a853;
  --gold-light: #f0d890;
  --gold-glow: rgba(240, 216, 144, 0.4);
  --cream: #fdf6ec;
  --burgundy: #722f37;
  --violet: #9b59b6;
  --violet-deep: #6c3483;
  --text-soft: rgba(255, 255, 255, 0.7);
  --text-whisper: rgba(255, 255, 255, 0.4);
  --glass-bg: rgba(10, 0, 25, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  overflow: hidden;
  background: var(--bg-void);
  font-family: 'Playfair Display', Georgia, serif;
  color: white;
  cursor: default;
  user-select: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ═══════════════════════════════════════════
   PRELOADER
   ═══════════════════════════════════════════ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  background: var(--bg-void);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.preloader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader-heart {
  font-size: 3rem;
  color: var(--rose);
  animation: heartbeat 1.2s ease-in-out infinite;
  filter: drop-shadow(0 0 20px var(--rose-glow));
}
.preloader-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  color: var(--text-whisper);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 300;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.3); }
  30% { transform: scale(1); }
  45% { transform: scale(1.2); }
  60% { transform: scale(1); }
}

/* ═══════════════════════════════════════════
   CANVAS
   ═══════════════════════════════════════════ */
#webgl {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  opacity: 0;
  transition: opacity 2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
#webgl.visible {
  opacity: 1;
}

/* ═══════════════════════════════════════════
   INTRO SCREEN
   ═══════════════════════════════════════════ */
.intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: 
    radial-gradient(ellipse at 30% 20%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(255, 107, 157, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, #0d0025 0%, #060012 40%, var(--bg-void) 100%);
  transition: opacity 1.2s ease, visibility 1.2s ease, transform 1.2s ease;
}
.intro.fade-out {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.05);
}

.intro-bg-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.intro-content {
  text-align: center;
  position: relative;
  max-width: 600px;
  padding: 3rem 2rem;
}

.intro-ornament {
  font-size: 1.2rem;
  color: var(--gold);
  opacity: 0.5;
  letter-spacing: 1em;
  animation: ornamentPulse 3s ease-in-out infinite;
}
.intro-ornament.top {
  margin-bottom: 1.5rem;
}
.intro-ornament.bottom {
  margin-top: 2rem;
}

@keyframes ornamentPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

.intro-kicker {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.75rem, 2vw, 0.95rem);
  color: var(--text-whisper);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 300;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease 0.3s both;
}

.intro-title {
  font-family: 'Great Vibes', 'Dancing Script', cursive;
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 400;
  background: linear-gradient(
    135deg, 
    var(--gold-light) 0%, 
    var(--rose-soft) 25%, 
    var(--gold) 50%, 
    var(--rose) 75%, 
    var(--gold-light) 100%
  );
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmerGold 5s ease-in-out infinite, fadeInUp 1s ease 0.5s both;
  line-height: 1.2;
  filter: drop-shadow(0 0 30px rgba(212, 168, 83, 0.3));
}

@keyframes shimmerGold {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.intro-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 1.2rem 0;
  animation: fadeInUp 1s ease 0.7s both;
}
.divider-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.divider-heart {
  color: var(--rose);
  font-size: 1rem;
  animation: heartGlow 2s ease-in-out infinite;
}

@keyframes heartGlow {
  0%, 100% { 
    filter: drop-shadow(0 0 4px transparent); 
    transform: scale(1);
  }
  50% { 
    filter: drop-shadow(0 0 12px var(--rose-glow)); 
    transform: scale(1.15);
  }
}

.intro-subtitle {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 300;
  font-style: italic;
  color: var(--text-soft);
  margin-bottom: 2.5rem;
  letter-spacing: 0.1em;
  animation: fadeInUp 1s ease 0.9s both;
}

.start-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 48px;
  border: 1px solid rgba(212, 168, 83, 0.35);
  border-radius: 60px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--gold-light);
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  animation: fadeInUp 1s ease 1.1s both, btnPulse 3s ease-in-out 2s infinite;
}

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 168, 83, 0); }
  50% { box-shadow: 0 0 0 15px rgba(212, 168, 83, 0.08); }
}

.btn-glow {
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--rose-glow), var(--gold-glow), var(--rose-glow));
  background-size: 200% 200%;
  opacity: 0;
  transition: opacity 0.5s ease;
  animation: shimmerGold 3s ease-in-out infinite;
  z-index: 0;
}

.start-btn:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 
    0 10px 50px rgba(212, 168, 83, 0.25),
    0 0 100px rgba(255, 107, 157, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.start-btn:hover .btn-glow {
  opacity: 0.2;
}
.start-btn:active {
  transform: translateY(-1px);
}

.btn-icon {
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
}
.btn-text {
  position: relative;
  z-index: 1;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════════
   OVERLAY TEXT — Glassmorphism
   ═══════════════════════════════════════════ */
.overlay {
  position: fixed;
  bottom: 6%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 10;
  pointer-events: none;
  width: 92%;
  max-width: 680px;
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.overlay.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(20px);
  pointer-events: none;
}

.overlay-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(25px) saturate(1.2);
  -webkit-backdrop-filter: blur(25px) saturate(1.2);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2rem 2.5rem;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.page-title {
  font-family: 'Great Vibes', 'Dancing Script', cursive;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 400;
  background: linear-gradient(135deg, var(--rose-soft), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.page-title.visible {
  opacity: 1;
  transform: translateY(0);
}

.page-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 0.8rem auto;
  opacity: 0;
  transition: opacity 0.8s ease 0.2s;
}
.page-title.visible ~ .page-divider {
  opacity: 1;
}

.page-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 300;
  font-style: italic;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.9;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
}
.page-text.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.nav-arrows {
  position: fixed;
  top: 50%;
  right: 3%;
  transform: translateY(-50%);
  z-index: 15;
  transition: opacity 0.5s ease;
}
.nav-arrows.hidden {
  opacity: 0;
  pointer-events: none;
}

.nav-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  color: var(--gold-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  animation: arrowPulse 2s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 168, 83, 0); }
  50% { box-shadow: 0 0 0 8px rgba(212, 168, 83, 0.1); }
}

.nav-btn:hover {
  border-color: var(--gold);
  background: rgba(212, 168, 83, 0.1);
  transform: scale(1.1);
}
.nav-btn svg {
  width: 22px;
  height: 22px;
}

/* ─── Hint ─── */
.hint {
  position: fixed;
  bottom: 2%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.9rem;
  color: var(--text-whisper);
  letter-spacing: 0.12em;
  animation: hintPulse 3s ease-in-out infinite;
  transition: opacity 0.6s ease;
  text-transform: uppercase;
}
.hint.hidden {
  opacity: 0;
}
.hint-icon {
  display: inline-block;
  animation: bounce 1.5s ease-in-out infinite;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.6; }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* ─── Page Counter ─── */
.page-counter {
  position: fixed;
  top: 24px;
  right: 28px;
  z-index: 10;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.85rem;
  color: var(--text-whisper);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: opacity 0.5s ease;
  background: rgba(0, 0, 0, 0.3);
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
}
.page-counter.hidden {
  opacity: 0;
}

/* ─── Audio Toggle ─── */
.audio-toggle {
  position: fixed;
  top: 24px;
  left: 28px;
  z-index: 10;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.3s ease;
}
.audio-toggle.hidden {
  opacity: 0;
  pointer-events: none;
}
.audio-toggle:hover {
  border-color: var(--gold);
  background: rgba(212, 168, 83, 0.1);
}

/* ═══════════════════════════════════════════
   FINALE
   ═══════════════════════════════════════════ */
.final-message {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: 
    radial-gradient(ellipse at 50% 40%, rgba(255, 107, 157, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at center, rgba(10, 0, 20, 0.9), rgba(3, 0, 8, 0.97));
  opacity: 0;
  pointer-events: none;
  transition: opacity 2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.final-message.visible {
  opacity: 1;
  pointer-events: auto;
}

.final-message h1 {
  font-family: 'Great Vibes', cursive;
  font-size: clamp(4rem, 12vw, 9rem);
  background: linear-gradient(
    135deg, 
    var(--rose-soft), 
    var(--gold-light), 
    var(--rose), 
    var(--gold)
  );
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmerGold 3s ease-in-out infinite;
  filter: drop-shadow(0 0 40px rgba(255, 107, 157, 0.3));
  line-height: 1.2;
}
.final-message p {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  color: var(--text-soft);
  margin-top: 1.2rem;
  font-style: italic;
  font-weight: 300;
  letter-spacing: 0.1em;
}
.final-hearts {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.final-float-heart {
  position: absolute;
  bottom: -20px;
  color: var(--rose);
  font-size: 1.4rem;
  opacity: 0;
  animation: floatUpFinal 5s ease-in-out infinite;
}

@keyframes floatUpFinal {
  0% {
    transform: translateY(0) scale(0.5);
    opacity: 0;
  }
  20% { opacity: 0.6; }
  100% {
    transform: translateY(-110vh) scale(1.2);
    opacity: 0;
  }
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {
  .overlay {
    bottom: 4%;
  }
  .overlay-glass {
    padding: 1.5rem 1.8rem;
    border-radius: 18px;
  }
  .nav-arrows {
    right: 2%;
  }
  .nav-btn {
    width: 42px;
    height: 42px;
  }
  .intro-content {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .overlay-glass {
    padding: 1.2rem 1.4rem;
  }
  .nav-arrows {
    top: auto;
    bottom: 12%;
    right: 5%;
  }
}