/* ---------------------------------------------------------
   LAYOUT · fondo, nav, secciones, grid, footer, responsive
--------------------------------------------------------- */

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

/* Fondo fijo — textura de papel/lino cálida, estática */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 15% 0%, rgba(189, 91, 40, 0.08), transparent 55%),
    radial-gradient(ellipse at 100% 30%, rgba(111, 122, 63, 0.06), transparent 50%),
    repeating-linear-gradient(
      120deg,
      rgba(36, 29, 21, 0.025) 0px,
      rgba(36, 29, 21, 0.025) 1px,
      transparent 1px,
      transparent 5px
    ),
    repeating-linear-gradient(
      32deg,
      rgba(36, 29, 21, 0.02) 0px,
      rgba(36, 29, 21, 0.02) 1px,
      transparent 1px,
      transparent 4px
    );
}

.bg-scene::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 18vw rgba(36, 29, 21, 0.14);
}

/* Barra de progreso de scroll */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  z-index: 200;
  transition: width 0.1s linear;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 236, 221, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 14px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
}

.nav-wordmark {
  font-family: var(--font-hand);
  font-size: 1.9rem;
  line-height: 1;
}

.nav-tagline {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--color-ink-soft);
  transition: color 0.25s var(--ease-soft);
}

.nav-links a:hover {
  color: var(--color-accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
}

/* Secciones base */
section {
  position: relative;
  padding-block: 110px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  margin-bottom: 18px;
}

.section-lead {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
}

/* Split layout */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.split.reverse .split-media {
  order: 2;
}

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

/* Grids */
.grid {
  display: grid;
  gap: 24px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Footer */
.footer {
  padding-top: 90px;
  padding-bottom: 0;
  border-top: 1px solid var(--color-border);
}

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

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-col a,
.footer-col p {
  color: var(--color-ink-soft);
  font-size: 0.94rem;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-block: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-ink-faint);
}

.footer-credit {
  color: var(--color-ink-faint);
  opacity: 0.75;
  transition: opacity 0.2s var(--ease-soft), color 0.2s var(--ease-soft);
}

.footer-credit:hover {
  opacity: 1;
  color: var(--color-accent);
}

/* ---------------------------------------------------------
   RESPONSIVE
--------------------------------------------------------- */

@media (max-width: 900px) {
  section {
    padding-block: 76px;
  }

  .container {
    padding-inline: 24px;
  }

  .nav-links {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: var(--color-surface-solid);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease-soft), transform 0.25s var(--ease-soft);
  }

  .nav-links a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-actions {
    gap: 10px;
  }

  .nav-cta {
    padding: 10px 16px;
    font-size: 0.82rem;
  }

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

  .split .split-media,
  .split.reverse .split-media {
    order: 1;
  }

  .split .split-copy,
  .split.reverse .split-copy {
    order: 2;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px 24px;
  }
}

@media (max-width: 500px) {
  .container {
    padding-inline: 18px;
  }

  .nav-tagline {
    display: none;
  }

  .nav-cta {
    padding: 11px;
    gap: 0;
  }

  .nav-cta .btn-label {
    display: none;
  }

  section {
    padding-block: 60px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}