/* ============================================
   LAYOUT.CSS — nav, secciones, container, grid, footer
   ============================================ */

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

main {
  position: relative;
  z-index: 1;
}

section {
  position: relative;
  padding: 120px 0;
}

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

.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(196, 209, 226, 0.55) 100%);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 200;
  background: transparent;
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 12px var(--glow-cyan);
  transition: width 0.1s linear;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 150;
  background: rgba(244, 247, 251, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line-soft);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.nav__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo {
  height: 34px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  flex: 1;
  justify-content: center;
}

.nav__links a {
  color: var(--text-soft);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s var(--ease);
}

.nav__links a:hover {
  color: var(--text);
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.25s var(--ease);
}

.nav__links a:hover::after {
  width: 100%;
}

.nav__cta {
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  flex-shrink: 0;
}

.nav__toggle span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--text);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 8px 32px 24px;
  gap: 4px;
  background: rgba(244, 247, 251, 0.96);
  border-top: 1px solid var(--line-soft);
}

.nav__mobile a {
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-soft);
  border-bottom: 1px solid var(--line-soft);
}

.nav.is-open .nav__mobile {
  display: flex;
}

/* ---------- Hero ---------- */

.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: 160px;
  padding-bottom: 96px;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 880px;
}

.hero__title {
  font-size: clamp(2.4rem, 5.4vw, 4.4rem);
  margin: 24px 0 28px;
  max-width: 18ch;
}

.hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.hero__subtitle {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--text-soft);
  max-width: 56ch;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 72px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 40px;
  width: 100%;
}

.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-hint span {
  width: 3px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
  animation: scrollHint 1.8s ease-in-out infinite;
}

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

.split__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
}

.split--reverse .split__inner {
  grid-template-columns: 0.95fr 1.05fr;
}

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

.split__text p {
  margin-top: 18px;
}

.split__text .section-title {
  margin-top: 12px;
}

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

.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding-top: 80px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer__col h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-faint);
  margin-bottom: 18px;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__col ul a {
  color: var(--text-soft);
  transition: color 0.2s var(--ease);
}

.footer__col ul a:hover {
  color: var(--cyan);
}

.footer__col--brand p {
  margin-top: 16px;
  max-width: 30ch;
  font-size: 0.92rem;
}

.footer__logo {
  height: 30px;
}

.footer__bottom {
  border-top: 1px solid var(--line-soft);
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  padding: 24px 32px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
  .container {
    padding: 0 24px;
  }

  section {
    padding: 88px 0;
  }

  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    padding-top: 132px;
  }

  .hero__stats {
    grid-template-columns: repeat(2, auto);
    row-gap: 28px;
  }

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

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

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

  .footer__bottom-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 500px) {
  .container {
    padding: 0 20px;
  }

  section {
    padding: 72px 0;
  }

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

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

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