/* =========================================================
   Landing ERUM Atlas — Puracé
   Dark Mode + Glassmorphism (coherente con el geovisor)
   ========================================================= */

:root {
  --bg: #0f172a;
  --bg-raised: #1a2332;
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --panel-bg: rgba(15, 23, 42, 0.88);
  --panel-border: rgba(255, 255, 255, 0.12);
  --card-bg: rgba(255, 255, 255, 0.06);
  --card-hover: rgba(56, 189, 248, 0.10);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --max-w: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-strong); }

img { max-width: 100%; display: block; }

/* ---------- Layout helpers ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.8px; color: var(--accent);
  margin-bottom: 12px;
}
.section-label i { font-size: 10px; }

.section-title {
  font-size: 28px; font-weight: 800; letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.section-subtitle {
  font-size: 15px; color: var(--text-dim); max-width: 560px;
  margin-bottom: 40px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  border: 1px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #fff; border: none;
}
.btn-primary:hover { box-shadow: 0 0 20px rgba(56,189,248,0.35); color: #fff; }
.btn-glass {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  color: var(--text);
}
.btn-glass:hover { background: var(--card-hover); border-color: var(--accent); color: var(--text); }

/* ---------- Nav ---------- */
.landing-nav {
  position: sticky; top: 0; z-index: 1000;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  background: rgba(15, 23, 42, 0.85); /* more opaque than geovisor panel */
  border-bottom: 1px solid var(--panel-border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  height: auto; min-height: 64px; padding: 12px 24px;
  max-width: var(--max-w); margin: 0 auto;
}
.nav-brand { display: flex; align-items: center; gap: 16px; }
.nav-logo {
  width: 10vw; min-width: 64px; max-width: 160px;
  flex-shrink: 0;
}
.nav-logo img { width: 100%; height: auto; display: block; }
.nav-text h1 { font-size: 16px; font-weight: 700; }
.nav-text span { font-size: 11px; color: var(--text-dim); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-size: 13px; font-weight: 500; color: var(--text-dim);
}
.nav-links a:hover { color: var(--text); }
.nav-cta { font-size: 13px; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta { padding: 8px 16px; font-size: 12px; }
  .nav-inner { flex-wrap: wrap; gap: 12px; }
  .nav-text { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 100px;
  background: radial-gradient(ellipse 70% 50% at 30% 20%, rgba(56,189,248,0.08), transparent);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: center;
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
}
.hero-text { max-width: 520px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: rgba(56,189,248,0.12);
  border: 1px solid rgba(56,189,248,0.25);
  border-radius: 999px;
  font-size: 12px; font-weight: 600; color: var(--accent);
  margin-bottom: 24px;
}
.hero h1 { font-size: 44px; font-weight: 900; letter-spacing: -1px; line-height: 1.1; margin-bottom: 16px; }
.hero h1 span { background: linear-gradient(135deg, var(--accent-strong), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 17px; color: var(--text-dim); margin-bottom: 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transition: transform 0.3s;
}
.hero-image:hover { transform: translateY(-4px); }
.hero-image img { width: 100%; border-radius: var(--radius); }
.hero-image::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(15,23,42,0.1), transparent 30%, rgba(15,23,42,0.3));
}

.hero-stats {
  display: flex; gap: 16px; margin-top: 32px;
  flex-wrap: wrap;
}
.stat-chip {
  padding: 8px 16px;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.stat-chip strong { color: var(--accent); }

@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 32px; }
  .hero { padding: 48px 0 60px; }
  .hero-image { order: -1; max-height: 240px; }
  .hero-image img { object-fit: cover; height: 240px; }
}

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section:nth-child(even) { background: rgba(255,255,255,0.015); }

/* ---------- Benefits ---------- */
.benefits-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.benefit-card {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
}
.benefit-card:hover {
  background: var(--card-hover);
  border-color: rgba(56,189,248,0.25);
  transform: translateY(-2px);
}
.benefit-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: rgba(56,189,248,0.1);
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 16px;
}
.benefit-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.benefit-card p { font-size: 13px; color: var(--text-dim); line-height: 1.6; }

@media (max-width: 900px) {
  .benefits-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .benefits-grid { grid-template-columns: 1fr; }
}

/* ---------- Capas ---------- */
.capas-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.capa-group {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.25s;
}
.capa-group:hover {
  border-color: rgba(56,189,248,0.25);
}
.capa-group-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--panel-border);
}
.capa-group-header i { color: var(--accent); font-size: 14px; }
.capa-group-header h3 { font-size: 14px; font-weight: 700; }
.capa-group-header .count {
  margin-left: auto;
  font-size: 11px; color: var(--text-dim);
  background: var(--card-bg); padding: 3px 10px;
  border-radius: 999px;
}
.capa-items { display: flex; flex-wrap: wrap; gap: 8px; }
.capa-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  font-size: 12px; font-weight: 500;
}
.capa-swatch {
  width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.2);
}
.capa-chip .feats { color: var(--text-dim); font-size: 10px; }

@media (max-width: 768px) {
  .capas-grid { grid-template-columns: 1fr; }
}

/* ---------- Tech ---------- */
.tech-grid {
  display: flex; flex-wrap: wrap; gap: 12px;
}
.tech-card {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.tech-card:hover { border-color: rgba(56,189,248,0.3); }
.tech-card i { font-size: 20px; color: var(--accent); width: 24px; text-align: center; }
.tech-card .tech-info h4 { font-size: 13px; font-weight: 600; }
.tech-card .tech-info span { font-size: 11px; color: var(--text-dim); }

/* ---------- Docs ---------- */
.docs-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.doc-card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  text-decoration: none; color: var(--text);
  transition: all 0.2s;
}
.doc-card:hover { border-color: var(--accent); background: var(--card-hover); }
.doc-card i { color: var(--accent); font-size: 18px; }
.doc-card h4 { font-size: 14px; font-weight: 700; }
.doc-card p { font-size: 12px; color: var(--text-dim); }

@media (max-width: 768px) {
  .docs-grid { grid-template-columns: 1fr; }
}

/* ---------- Author ---------- */
.author-section {
  padding: 80px 0;
  background: radial-gradient(ellipse 60% 60% at center -20%, rgba(2,132,199,0.1), transparent);
}
.author-card {
  display: flex; align-items: center; gap: 32px;
  max-width: 720px; margin: 0 auto;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 36px;
  transition: all 0.25s;
}
.author-card:hover { border-color: rgba(56,189,248,0.3); }
.author-avatar {
  width: 88px; height: 88px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 36px;
  box-shadow: 0 8px 24px rgba(2,132,199,0.3);
  overflow: hidden;
}
.author-avatar img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: 50%;
}
.author-info h3 { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.author-info .role { font-size: 13px; color: var(--accent); margin-bottom: 8px; }
.author-info p { font-size: 13px; color: var(--text-dim); line-height: 1.6; margin-bottom: 16px; }
.author-links { display: flex; gap: 12px; flex-wrap: wrap; }
.author-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  font-size: 13px; font-weight: 500;
  color: var(--text); text-decoration: none;
  transition: all 0.2s;
}
.author-link:hover { border-color: var(--accent); color: var(--accent); }
.author-link i { color: var(--text-dim); }

@media (max-width: 560px) {
  .author-card { flex-direction: column; text-align: center; }
  .author-links { justify-content: center; }
}

/* ---------- Footer ---------- */
.landing-footer {
  padding: 32px 0;
  border-top: 1px solid var(--panel-border);
  text-align: center;
  font-size: 13px; color: var(--text-dim);
}
.landing-footer a { color: var(--text-dim); }
.landing-footer a:hover { color: var(--text); }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-top: 8px; }

.footer-erum {
  margin-top: 24px; text-align: center;
}
.footer-erum img {
  width: 20vw; min-width: 96px; max-width: 280px;
  height: auto; opacity: 0.9;
  transition: opacity 0.2s;
}
.footer-erum img:hover { opacity: 1; }

/* ---------- Programas ERUM ---------- */
.footer-programas {
  border-top: 1px solid var(--panel-border);
  padding: 40px 24px 56px;
  background: var(--bg-raised);
}
.programas-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.programas-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.8px; color: var(--text-dim);
}
.programas-logos {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 28px;
}
.programas-logos img {
  height: 64px; width: auto; flex: 0 1 auto;
  opacity: 0.88; transition: all 0.2s;
}
.programas-logos img:hover { opacity: 1; transform: translateY(-2px); }

@media (max-width: 560px) {
  .programas-logos img { height: 48px; }
  .programas-logos { gap: 18px; }
}

/* ---------- Decorative background elements ---------- */
.bg-glow {
  position: fixed; pointer-events: none; z-index: -1;
}
.bg-glow-1 {
  width: 600px; height: 600px;
  top: -200px; right: -150px;
  background: radial-gradient(circle, rgba(2,132,199,0.08), transparent 70%);
  border-radius: 50%;
}
.bg-glow-2 {
  width: 500px; height: 500px;
  bottom: -150px; left: -100px;
  background: radial-gradient(circle, rgba(56,189,248,0.06), transparent 70%);
  border-radius: 50%;
}