/**
 * Navegando por la Historia — Fire Crest
 * Palette: wood (teak, oak, honey, cream) + river (Río de la Plata: brown-grey, warm slate).
 * No blue: river as depth and reflection in warm, muddy tones.
 */
:root {
  /* Wood — base and warmth */
  --wood-teak: #2c2419;
  --wood-deep: #3d3225;
  --wood-mid: #4a3f32;
  --wood-warm: #5c5042;
  --wood-oak: #6b5d4f;
  --wood-honey: #b8860b;
  --wood-gold: #c9a227;
  --wood-cream: #e8dfd0;
  --wood-ivory: #f5f0e8;
  /* River — Río de la Plata: brown-grey, slate, no blue */
  --river-deep: #2a241c;
  --river-mid: #3a3329;
  --river-surface: #4a4338;
  --river-silver: #7a7265;
  --river-mist: #a89f92;
  --river-foam: #c4bcb0;
  /* Text */
  --text-primary: #f5f0e8;
  --text-muted: #b8ad9e;
  --text-accent: #c9a227;
  /* Motion */
  --ease-out-smooth: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-slow: 1.2s;
  --duration-mid: 0.8s;
  --duration-fast: 0.4s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", system-ui, sans-serif;
  font-weight: 300;
  background: var(--wood-teak);
  color: var(--text-primary);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 5vw, 3rem);
}

/* Background: wood + river (warm brown-grey gradient, no blue) */
.river-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(180deg,
      var(--wood-teak) 0%,
      var(--wood-deep) 20%,
      var(--river-mid) 45%,
      var(--wood-mid) 70%,
      var(--wood-teak) 100%
    );
  animation: riverShift 20s ease-in-out infinite alternate;
}

@keyframes riverShift {
  0% { opacity: 1; filter: brightness(0.98); }
  100% { opacity: 1; filter: brightness(1.02); }
}

/* Subtle grain overlay (wood / paper feel) */
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* Hero block */
.hero {
  max-width: 36rem;
  width: 100%;
  text-align: center;
}

.hero__header {
  margin-bottom: clamp(2rem, 6vw, 3.5rem);
}

.hero__label {
  font-size: clamp(0.75rem, 2vw, 0.85rem);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--river-mist);
  margin: 0 0 0.75rem;
  font-weight: 400;
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out-smooth) 0.2s forwards;
}

.hero__title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(2rem, 8vw, 3.25rem);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}

.hero__title-line {
  display: block;
  opacity: 0;
  transform: translateY(1.2rem);
  animation: fadeInUp var(--duration-slow) var(--ease-out-smooth) 0.4s forwards;
}

.hero__title-line--accent {
  color: var(--wood-gold);
  animation-delay: 0.55s;
  animation-fill-mode: both;
}

.hero__boat {
  font-size: clamp(0.85rem, 2.2vw, 1rem);
  font-style: italic;
  color: var(--wood-cream);
  margin: 0;
  opacity: 0;
  animation: fadeInUp var(--duration-mid) var(--ease-out-smooth) 0.85s forwards;
}

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

/* Intro section */
.intro {
  margin-bottom: clamp(2rem, 5vw, 3rem);
  text-align: left;
}

.intro__lead,
.intro__text,
.intro__cta {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  line-height: 1.7;
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  opacity: 0;
  transform: translateY(0.75rem);
  animation: fadeInUp var(--duration-mid) var(--ease-out-smooth) forwards;
}

.intro__lead {
  animation-delay: 1.05s;
  color: var(--text-primary);
  font-weight: 400;
}

.intro__lead em {
  color: var(--wood-gold);
  font-style: italic;
}

.intro__text {
  animation-delay: 1.25s;
}

.intro__cta {
  animation-delay: 1.45s;
  margin-bottom: 0;
}

.intro__cta strong {
  color: var(--wood-cream);
  font-weight: 500;
}

/* Footer line + text */
.hero__footer {
  border-top: 1px solid rgba(201, 162, 39, 0.25);
  padding-top: clamp(1.25rem, 4vw, 1.75rem);
}

.hero__footer-line {
  display: block;
  width: 3rem;
  height: 2px;
  margin: 0 auto 1rem;
  background: linear-gradient(90deg, transparent, var(--wood-honey), transparent);
  opacity: 0;
  animation: fadeIn var(--duration-mid) var(--ease-out-smooth) 1.65s forwards;
}

.hero__footer-text {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--river-silver);
  margin: 0;
  opacity: 0;
  animation: fadeIn var(--duration-mid) var(--ease-out-smooth) 1.8s forwards;
}

.hero__footer-nexttech {
  margin: 1.25rem 0 0;
  opacity: 0;
  animation: fadeIn var(--duration-mid) var(--ease-out-smooth) 1.95s forwards;
}

.nexttech-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--river-silver);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out-smooth);
}

.nexttech-link:hover {
  color: var(--wood-cream);
}

.nexttech-logo {
  flex-shrink: 0;
  opacity: 0.85;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .river-bg,
  .hero__label,
  .hero__title-line,
  .hero__boat,
  .intro__lead,
  .intro__text,
  .intro__cta,
  .hero__footer-line,
  .hero__footer-text,
  .hero__footer-nexttech {
    animation-duration: 0.01ms;
    animation-delay: 0s;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }
}