:root {
  --lp-bg: #080a0d;
  --lp-bg-soft: #0c0e12;
  --lp-surface: #111318;
  --lp-surface-hover: #161a22;
  --lp-border: #1c2129;
  --lp-border-focus: #2a3340;
  --lp-text: #eef0f4;
  --lp-text-soft: #b8bdc8;
  --lp-muted: #6b7280;
  --lp-accent: #4d9cf7;
  --lp-accent-hover: #6bafff;
  --lp-accent-muted: rgba(77, 156, 247, 0.15);
  --lp-font: 'DM Sans', system-ui, sans-serif;
  --lp-mono: 'JetBrains Mono', monospace;
  --lp-radius: 12px;
  --lp-radius-sm: 8px;
  --lp-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --lp-shadow-glow: 0 0 40px rgba(77, 156, 247, 0.15);
  --lp-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --lp-duration: 0.25s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--lp-font);
  background: var(--lp-bg);
  color: var(--lp-text);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header estilo tools.eruditus.app: barra a ancho completo, contenido centrado */
.landing-header {
  width: 100%;
  border-bottom: 1px solid var(--lp-border);
  background: var(--lp-surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.landing-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
}

.landing-logo {
  font-size: 30px;
  font-weight: 800;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
  color: var(--lp-text);
  text-decoration: none;
  transition: color var(--lp-duration) var(--lp-ease);
}

.landing-logo:hover {
  color: var(--lp-accent);
}

.landing-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.landing-nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--lp-text-soft);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--lp-radius-sm);
  transition: color var(--lp-duration), background var(--lp-duration);
  transition-timing-function: var(--lp-ease);
}

.landing-nav-link:hover {
  color: var(--lp-text);
  background: rgba(255, 255, 255, 0.05);
}

.landing-nav-link:focus-visible {
  outline: 2px solid var(--lp-accent);
  outline-offset: 2px;
}

/* CTA principal en header (como "Abrir App" en tools) */
.landing-header-cta {
  display: inline-block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #0a0c0f;
  background: var(--lp-accent);
  padding: 0.5rem 1rem;
  border-radius: var(--lp-radius-sm);
  text-decoration: none;
  margin-left: 0.5rem;
  transition: background var(--lp-duration), transform var(--lp-duration);
  transition-timing-function: var(--lp-ease);
}

.landing-header-cta:hover {
  background: var(--lp-accent-hover);
}

.landing-header-cta:focus-visible {
  outline: 2px solid var(--lp-accent);
  outline-offset: 2px;
}

.landing-main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  width: 100%;
}

/* Hero: banda full-width con gradiente muy visible */
.hero {
  margin: 20px -1.5rem 4rem;
  padding: 4rem 1.5rem 4.5rem;
  position: relative;
  text-align: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 35%, #0f172a 100%);
  border-bottom: 2px solid rgba(77, 156, 247, 0.4);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 100% 80% at 50% -20%, rgba(77, 156, 247, 0.25) 0%, transparent 55%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #93c5fd;
  background: rgba(77, 156, 247, 0.2);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  margin: 0 0 1.75rem 0;
  border: 1px solid rgba(77, 156, 247, 0.5);
  box-shadow: 0 0 24px rgba(77, 156, 247, 0.2);
  transition: border-color var(--lp-duration), box-shadow var(--lp-duration), transform var(--lp-duration);
}

.hero-badge:hover {
  border-color: rgba(77, 156, 247, 0.8);
  box-shadow: 0 0 32px rgba(77, 156, 247, 0.3);
  transform: scale(1.02);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0 auto 1.35rem;
  line-height: 1.08;
  max-width: 640px;
  background: linear-gradient(180deg, #f8fafc 0%, #cbd5e1 50%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
}

.hero-title br {
  display: block;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: #cbd5e1;
  max-width: 500px;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3.25rem;
}

.hero-cta {
  display: inline-block;
  padding: 1rem 1.85rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--lp-font);
  border-radius: var(--lp-radius);
  text-decoration: none;
  transition: background var(--lp-duration), color var(--lp-duration), border-color var(--lp-duration),
    transform var(--lp-duration), box-shadow var(--lp-duration);
  transition-timing-function: var(--lp-ease);
}

.hero-cta-primary {
  color: #0a0c0f;
  background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 50%, #2563eb 100%);
  border: none;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.5), 0 1px 0 rgba(255, 255, 255, 0.2) inset;
}

.hero-cta-primary:hover {
  background: linear-gradient(180deg, #7ab4ff 0%, #4d9cf7 50%, #3b82f6 100%);
  box-shadow: 0 8px 28px rgba(59, 130, 246, 0.55), 0 1px 0 rgba(255, 255, 255, 0.25) inset;
  transform: translateY(-2px);
}

.hero-cta-primary:active {
  transform: translateY(0) scale(0.98);
}

.hero-cta-secondary {
  color: #e2e8f0;
  background: transparent;
  border: 2px solid rgba(148, 163, 184, 0.5);
}

.hero-cta-secondary:hover {
  border-color: #93c5fd;
  color: #93c5fd;
  background: rgba(77, 156, 247, 0.1);
}

.hero-cta:focus-visible {
  outline: 2px solid var(--lp-accent);
  outline-offset: 3px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.hero-stat {
  text-align: center;
  padding: 1.25rem 0.75rem;
  border-radius: var(--lp-radius);
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(77, 156, 247, 0.25);
  transition: background var(--lp-duration), border-color var(--lp-duration), transform var(--lp-duration);
}

.hero-stat:hover {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(77, 156, 247, 0.5);
  transform: translateY(-2px);
}

.hero-stat-value {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  font-family: var(--lp-mono);
  color: #93c5fd;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: #94a3b8;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.features {
  padding: 2.5rem 0;
}

.features-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0 0 2rem 0;
  text-align: center;
  color: var(--lp-text);
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 1.5rem;
  transition: border-color var(--lp-duration), background var(--lp-duration),
    transform var(--lp-duration), box-shadow var(--lp-duration);
  transition-timing-function: var(--lp-ease);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lp-accent);
  opacity: 0;
  transition: opacity var(--lp-duration) var(--lp-ease);
}

.feature-card:hover {
  border-color: var(--lp-border-focus);
  background: var(--lp-surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--lp-shadow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 1.5rem;
  color: var(--lp-accent);
  margin-bottom: 0.85rem;
  font-family: var(--lp-mono);
  display: inline-block;
  transition: transform var(--lp-duration) var(--lp-ease);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-heading {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--lp-text);
  letter-spacing: -0.01em;
}

.feature-text {
  font-size: 0.9rem;
  color: var(--lp-text-soft);
  margin: 0;
  line-height: 1.55;
}

/* Sección precios estilo tools.eruditus.app (#pricing) */
.pricing-section {
  padding: 3rem 0 2rem;
}

.pricing-title {
  font-size: 1.75rem;
  font-weight: 600;
  text-align: center;
  color: var(--lp-text);
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.02em;
}

.pricing-subtitle {
  font-size: 1rem;
  color: var(--lp-text-soft);
  text-align: center;
  margin: 0 0 2rem 0;
}

.pricing-card {
  max-width: 400px;
  margin: 0 auto;
  background: var(--lp-surface);
  border: 1px solid var(--lp-border);
  border-radius: var(--lp-radius);
  padding: 2rem;
  text-align: center;
  transition: border-color var(--lp-duration), box-shadow var(--lp-duration);
}

.pricing-card:hover {
  border-color: rgba(77, 156, 247, 0.4);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.pricing-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--lp-accent);
  margin: 0 0 1rem 0;
}

.pricing-plan {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--lp-text);
  margin: 0 0 0.25rem 0;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--lp-mono);
  color: var(--lp-text);
  margin: 0 0 0.5rem 0;
}

.pricing-period {
  font-size: 1rem;
  font-weight: 500;
  color: var(--lp-muted);
}

.pricing-desc {
  font-size: 0.95rem;
  color: var(--lp-text-soft);
  margin: 0 0 1.5rem 0;
  line-height: 1.55;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem 0;
  text-align: left;
}

.pricing-features li {
  font-size: 0.9rem;
  color: var(--lp-text-soft);
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--lp-accent);
  font-weight: 700;
}

.pricing-cta {
  display: inline-block;
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: #0a0c0f;
  background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 50%, #2563eb 100%);
  border-radius: var(--lp-radius);
  text-decoration: none;
  text-align: center;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
  transition: background var(--lp-duration), box-shadow var(--lp-duration), transform var(--lp-duration);
}

.pricing-cta:hover {
  background: linear-gradient(180deg, #7ab4ff 0%, #4d9cf7 50%, #3b82f6 100%);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
}

.cta-section {
  text-align: center;
  padding: 3.5rem 1.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--lp-border);
  background: linear-gradient(180deg, transparent 0%, var(--lp-bg-soft) 100%);
  border-radius: var(--lp-radius);
}

.cta-text {
  font-size: 1.05rem;
  color: var(--lp-text-soft);
  margin: 0 auto 1.5rem;
  max-width: 420px;
  line-height: 1.6;
}

.cta-button {
  display: inline-block;
  padding: 0.9rem 1.65rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--lp-text);
  background: transparent;
  border: 2px solid var(--lp-accent);
  border-radius: var(--lp-radius);
  text-decoration: none;
  transition: background var(--lp-duration), color var(--lp-duration),
    border-color var(--lp-duration), box-shadow var(--lp-duration), transform var(--lp-duration);
  transition-timing-function: var(--lp-ease);
}

.cta-button:hover {
  background: var(--lp-accent);
  color: #0a0c0f;
  box-shadow: 0 4px 16px rgba(77, 156, 247, 0.3);
  transform: translateY(-1px);
}

.cta-button:focus-visible {
  outline: 2px solid var(--lp-accent);
  outline-offset: 3px;
}

.landing-footer {
  padding: 1.5rem 1.5rem;
  border-top: 1px solid var(--lp-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--lp-muted);
  background: var(--lp-surface);
}

.landing-footer p {
  margin: 0;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

@media (max-width: 640px) {
  .landing-header-inner {
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .pricing-card {
    margin: 0 1rem;
    padding: 1.5rem;
  }

  .landing-logo {
    font-size: 1.1rem;
  }

  .landing-nav {
    width: 100%;
    justify-content: flex-end;
    gap: 0;
  }

  .landing-nav-link {
    padding: 0.4rem 0.5rem;
    font-size: 0.875rem;
  }

  .landing-header-cta {
    margin-left: 0.25rem;
    padding: 0.45rem 0.75rem;
    font-size: 0.875rem;
  }

  .landing-main {
    padding: 0 1rem 3rem;
  }

  .hero {
    margin-left: -1rem;
    margin-right: -1rem;
    padding: 3rem 1rem 3.5rem;
  }

  .hero-ctas {
    flex-direction: column;
    margin-bottom: 2.5rem;
  }

  .hero-cta {
    width: 100%;
    text-align: center;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1.25rem 1rem;
  }

  .hero-stat-value {
    font-size: 1.1rem;
  }

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