/* ── CARD INNER GRID ──────────────────────────────── */
.card-inner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 768px) {
  .card-inner-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* ── SECTORS IMAGE GRID ───────────────────────────── */
.sectors-img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .sectors-img-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .sectors-img-grid > div img { height: 240px; }
}

@media (max-width: 480px) {
  .sectors-img-grid > div img { height: 200px; }
}

/* ── SPLIT SECTIONS ───────────────────────────────── */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.split-section--reverse .reveal-left { order: 2; }
.split-section--reverse .reveal-scale { order: 1; }

@media (max-width: 768px) {
  .split-section {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .split-section--reverse .reveal-left,
  .split-section--reverse .reveal-scale { order: unset; }
}

/* ── SCROLL PROGRESS ─────────────────────────────── */
#scroll-progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 2px; z-index: 1000;
  background: linear-gradient(90deg, var(--blue-core), var(--blue-glow));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s linear;
}

/* ── CANVAS BACKGROUND ───────────────────────────── */
#canvas-bg {
  position: fixed; inset: 0;
  z-index: 0; pointer-events: none;
}
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(14,21,37,0.80) 100%);
}

/* ── NAVIGATION ──────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(14, 21, 37, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  transition: var(--transition);
}
nav.scrolled {
  background: rgba(14, 21, 37, 0.94);
  border-bottom-color: var(--line-blue);
  box-shadow: 0 4px 40px rgba(0,0,0,0.4);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 2rem;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.nav-logo img { height: 36px; width: auto; }
.nav-links {
  display: flex; align-items: center; gap: 2.5rem;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1px; background: var(--blue-bright);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--blue-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--blue-glow) !important;
  transition: var(--transition-fast);
}
.nav-cta:hover {
  background: var(--blue-dim);
  border-color: var(--blue-bright);
  box-shadow: 0 0 20px rgba(59,130,246,0.15);
}
.nav-cta::after { display: none !important; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 1.5px;
  background: var(--text-primary); border-radius: 2px;
  transition: var(--transition-fast);
}

/* ── CONTAINER ────────────────────────────────────── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.container-sm { max-width: 860px; margin: 0 auto; padding: 0 2rem; }

/* ── SECTIONS ─────────────────────────────────────── */
section, header, main { position: relative; z-index: 2; }

.section-pad { padding: 7rem 2rem; }
.section-pad-sm { padding: 4rem 2rem; }

/* ── HERO LAYOUT ──────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 10rem 2rem 6rem;
}

/* ── STATS ROW ────────────────────────────────────── */
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 4rem;
}
.stat-item {
  padding: 2rem 1.5rem;
  border-right: 1px solid var(--line);
  text-align: center;
}
.stat-item:last-child { border-right: none; }

/* ── GRID LAYOUTS ─────────────────────────────────── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-2-1 { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; align-items: center; }

/* ── SECTION HEADER ───────────────────────────────── */
.section-header { margin-bottom: 4rem; }
.section-header.centered { text-align: center; }

/* ── DIVIDER ──────────────────────────────────────── */
.divider {
  width: 3rem; height: 1px;
  background: linear-gradient(90deg, var(--blue-core), transparent);
  margin: 1.5rem 0;
}
.divider.centered { margin: 1.5rem auto; }

/* ── TIMELINE / METHODOLOGY ───────────────────────── */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.timeline::before {
  content: ''; position: absolute; top: 2rem; left: 10%; right: 10%;
  height: 1px; background: linear-gradient(90deg, transparent, var(--blue-border), transparent);
}

/* ── FOOTER ───────────────────────────────────────── */
footer {
  position: relative; z-index: 2;
  background: rgba(10, 16, 30, 0.97);
  border-top: 1px solid var(--line);
  padding: 5rem 2rem 2rem;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem; margin-bottom: 4rem;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
  display: flex; align-items: center; justify-content: space-between;
}

/* ── TOAST ────────────────────────────────────────── */
#toast {
  position: fixed; bottom: 2rem; right: 2rem;
  z-index: 9999;
  background: var(--bg-card);
  border: 1px solid var(--blue-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  backdrop-filter: blur(20px);
  transform: translateY(120%); opacity: 0;
  transition: var(--transition);
  max-width: 320px;
}
#toast.visible { transform: translateY(0); opacity: 1; }

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .timeline::before { display: none; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: fixed; top: 72px; left: 0; right: 0;
    background: rgba(14,21,37,0.97);
    border-bottom: 1px solid var(--line-blue);
    padding: 2rem;
    gap: 1.5rem;
  }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr !important; }
  .grid-2-1 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr !important; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-top: 1px solid var(--line); }
  .stat-item:nth-child(4) { border-top: 1px solid var(--line); border-right: none; }
  .timeline { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .section-pad { padding: 4rem 1.25rem; }
  .section-pad-sm { padding: 2.5rem 1.25rem; }
  .hero { padding: 8rem 1.25rem 4rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }

  /* Fix inline grid overrides — diferenciales, splits, etc. */
  .diff-item { width: 100%; }

  /* Any section using inline style grid 2-col → force single col */
  .container > div[style*="grid-template-columns:1fr 1fr"],
  .container > div[style*="grid-template-columns: 1fr 1fr"],
  .container > div[style*="grid-template-columns:repeat(2, 1fr)"],
  .container > div[style*="grid-template-columns: repeat(2, 1fr)"],
  section > .container > div[style*="grid-template-columns"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 2rem !important;
  }

  /* Vertical card inner grids (fertilizer/construction split) */
  .vertical-card > div[style*="grid-template-columns:1fr 1fr"],
  .vertical-card > div[style*="grid-template-columns: 1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
  }

  /* Sector image trio → single column */
  div[style*="grid-template-columns:repeat(3,1fr)"],
  div[style*="grid-template-columns: repeat(3, 1fr)"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 1rem !important;
  }

  /* Hero background image height */
  .hero { min-height: auto; }

  /* Floating badge on image — hide on mobile */
  div[style*="position:absolute; top:-1rem; right:-1rem"] {
    display: none !important;
  }
  /* Overlapping second image — hide on mobile */
  div[style*="position:absolute; bottom:-2rem; right:-2rem"] {
    display: none !important;
  }

  /* Dossier book mockup — remove 3D transform on mobile */
  div[style*="rotateY(-8deg)"] {
    transform: none !important;
    max-width: 100% !important;
  }

  /* Dossier section grid */
  #dossier .container > div {
    display: flex !important;
    flex-direction: column !important;
    gap: 2.5rem !important;
  }

  /* Timeline steps */
  .step-card { padding: 1rem 0.5rem 1rem 1rem; }
  .step-card::before { display: none; }

  /* Accent line wrap */
  .accent-line { flex-direction: column; gap: 1rem; padding: 1.75rem; }

  /* Display font sizes tighter on mobile */
  .display { font-size: clamp(2.2rem, 10vw, 3.5rem); }
  .display-lg { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .display-sm { font-size: clamp(1.5rem, 6vw, 2.2rem); }

  /* Container padding */
  .container, .container-sm { padding: 0 1.25rem; }

  /* Footer grid full width */
  .footer-grid { gap: 2rem; }

  /* Model cards */
  .model-recommended { position: static; display: inline-block; margin-bottom: 0.5rem; }
}

/* Extra small screens */
@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .btn { padding: 0.85rem 1.25rem; font-size: 0.62rem; }
  .section-pad { padding: 3.5rem 1rem; }
  .card-body { padding: 1.75rem; }
  .vertical-card-body, .vertical-card-header { padding: 1.5rem; }
}