/* ==========================================================================
   Smart Money Guide — Layout estructural
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
}

section {
  padding: 140px 0;
}

/* ---- Fondo 3D fijo ---- */

.scene-wrap {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--bg);
}

#scene-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 30%, rgba(10, 8, 5, 0.55) 78%, var(--bg) 100%),
    linear-gradient(rgba(10, 8, 5, 0.2), rgba(10, 8, 5, 0.55) 60%, var(--bg) 100%);
}

/* ---- Barra de progreso ---- */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  z-index: 1000;
  transition: width 0.1s linear;
}

/* ---- Nav ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(10, 8, 5, 0.5);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-gold);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-cta {
  flex-shrink: 0;
}

/* ---- Grids compartidos ---- */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 56px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Split sections ---- */

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.split-reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.split-reverse .split-visual {
  order: -1;
}

/* ---- Lead magnet ---- */

.lead-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: center;
}

/* ---- Footer ---- */

.footer {
  border-top: 1px solid var(--border-gold);
  background: rgba(10, 8, 5, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 56px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-gold);
  padding: 28px 32px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  section {
    padding: 96px 0;
  }

  .container {
    padding: 0 24px;
  }

  .nav-links {
    display: none;
  }

  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }

  .split,
  .split-reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .split-reverse .split-visual {
    order: 0;
  }

  .split-visual {
    height: 220px;
  }

  .lead-card {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  section {
    padding: 72px 0;
  }

  .container {
    padding: 0 20px;
  }

  .topics-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    padding: 24px 20px;
  }
}