/* Reset minimo */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Variables CSS (PRD §19) */
:root {
  --color-primary: #08BFDA;
  --color-primary-light: #65E6F6;
  --color-primary-dark: #068CA0;
  --color-secondary: #7C3AED;
  --color-secondary-light: #A78BFA;
  --color-secondary-dark: #5B21B6;
  --color-accent: #FF6B6B;
  --color-warning: #F59E0B;
  --color-success: #10B981;
  --color-info: #3B82F6;
  --color-bg-dark: #0F172A;
  --color-surface-dark: #1E293B;
  --color-elevated: #334155;
  --color-bg-light: #F0FDFA;
  --color-white: #FFFFFF;
  --color-text-dark: #F1F5F9;
  --color-text-muted: #94A3B8;
  --color-text-light: #0F172A;
  --color-text-light-muted: #475569;
  --gradient-brand: linear-gradient(135deg, #08BFDA 0%, #7C3AED 100%);
  --radius-card: 16px;
  --radius-button: 12px;
  --container: 1180px;
}

/* Base */
html { scroll-behavior: smooth; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--color-white);
  color: var(--color-text-light);
}
h1, h2, h3, h4 {
  font-family: Montserrat, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.25;
}
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* Secciones */
.section { padding-block: 96px; }
.section-dark { background: var(--color-bg-dark); color: var(--color-text-dark); }
.section-light { background: var(--color-bg-light); color: var(--color-text-light); }

@media (max-width: 680px) {
  .section { padding-block: 64px; }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}
.section-dark .eyebrow { color: var(--color-primary-light); }
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
}
.section-copy {
  max-width: 720px;
  color: var(--color-text-light-muted);
  font-size: 18px;
  margin-bottom: 40px;
}
.section-dark .section-copy { color: var(--color-text-muted); }

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius-button);
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
  transition: transform .2s, opacity .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--gradient-brand);
  color: var(--color-white);
}
.btn-ghost {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.section-dark .btn-ghost { border-color: var(--color-primary-light); color: var(--color-primary-light); }

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(8, 191, 218, .12);
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
}
.section-dark .badge { color: var(--color-primary-light); }

/* Cards base */
.feature-card, .profile-card, .solution-card, .trust-card, .step-card, .diff-card {
  border-radius: var(--radius-card);
  border: 1px solid rgba(51, 65, 85, .35);
  box-shadow: 0 4px 16px rgba(15, 23, 42, .06);
  padding: 24px;
  background: var(--color-white);
}
.section-light .feature-card,
.section-light .profile-card,
.section-light .solution-card,
.section-light .trust-card,
.section-light .step-card,
.section-light .diff-card {
  background: var(--color-white);
  color: var(--color-text-light);
}
.section-dark .feature-card,
.section-dark .profile-card,
.section-dark .solution-card,
.section-dark .trust-card,
.section-dark .step-card,
.section-dark .diff-card {
  background: var(--color-surface-dark);
  color: var(--color-text-dark);
  border-color: rgba(148, 163, 184, .2);
}

/* Grids */
.feature-grid, .solution-grid, .trust-grid, .step-grid, .diff-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, 1fr);
}
.profile-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(4, 1fr);
}
.metric-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .feature-grid, .solution-grid, .trust-grid, .step-grid, .diff-grid,
  .profile-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .feature-grid, .solution-grid, .trust-grid, .step-grid, .diff-grid,
  .profile-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Screenshot placeholder (PRD §11, bloque exacto) */
.screenshot-placeholder {
  margin: 0;
}
.problem-visual {
  max-width: 1040px;
  margin: 32px auto 0;
  padding-inline: clamp(12px, 2vw, 24px);
}
.problem-visual img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.16);
}
.placeholder-frame {
  min-height: 280px;
  border: 1.5px dashed rgba(8, 191, 218, 0.55);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(8, 191, 218, 0.08), rgba(124, 58, 237, 0.08)),
    #0F172A;
  color: #F1F5F9;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
}
.placeholder-frame span {
  display: block;
  color: #94A3B8;
  font-size: 14px;
}
.placeholder-frame strong {
  display: block;
  margin-top: 8px;
  color: #65E6F6;
}
.screenshot-placeholder figcaption,
.screenshot-card figcaption {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-light-muted);
  text-align: center;
}
.section-dark .screenshot-placeholder figcaption,
.section-dark .screenshot-card figcaption {
  color: var(--color-text-muted);
}
.screenshot-card img { border-radius: var(--radius-card); }
.screenshot-placeholder.is-hidden { display: none; }

/* Cuando script.js confirma que el archivo existe, se oculta el frame punteado
   (el <strong> con el nombre se queda en el HTML como referencia de lo que falta) */
.screenshot-placeholder.has-image .placeholder-frame { display: none; }
.screenshot-placeholder.has-image img {
  width: 100%;
  border-radius: var(--radius-card);
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.16);
}

/* Tablas */
.table-scroll { overflow-x: auto; }
.module-matrix, .user-types-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}
.module-matrix th, .module-matrix td,
.user-types-table th, .user-types-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(51, 65, 85, .2);
}
.module-matrix thead th, .user-types-table thead th {
  background: var(--color-bg-dark);
  color: var(--color-text-dark);
}
.module-matrix tbody tr:nth-child(even) { background: rgba(8, 191, 218, .04); }
.module-matrix td:first-child, .user-types-table td:first-child {
  font-family: Montserrat, ui-sans-serif, system-ui, sans-serif;
  font-weight: 600;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg-dark);
  border-bottom: 1px solid rgba(148, 163, 184, .15);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-block: 16px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  overflow-x: auto;
}
.nav-links a {
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.is-active {
  color: var(--color-primary-light);
}
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text-dark);
}
.nav-toggle .icon-menu-close { display: none; }
.site-header.nav-open .nav-toggle .icon-menu-open { display: none; }
.site-header.nav-open .nav-toggle .icon-menu-close { display: block; }

@media (max-width: 1024px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--color-bg-dark);
    padding: 16px 24px 24px;
    gap: 16px;
  }
  .site-header.nav-open .nav-links { display: flex; }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
}

/* Hero */
.hero { background: var(--color-bg-dark); color: var(--color-text-dark); padding-block: 64px 96px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  margin-bottom: 20px;
}
.hero-subheadline {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  max-width: 560px;
}
.hero-bullets { margin-bottom: 32px; display: flex; flex-direction: column; gap: 12px; }
.hero-bullets li { display: flex; align-items: center; gap: 10px; }
.hero-bullets svg { color: var(--color-primary-light); flex-shrink: 0; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { flex: 1; }
}

.metric-grid { margin-top: 8px; }
.metric-card {
  border-radius: var(--radius-card);
  border: 1px solid rgba(148, 163, 184, .2);
  background: var(--color-surface-dark);
  padding: 20px;
  text-align: center;
}
.metric-highlight {
  font-family: Montserrat, sans-serif;
  font-weight: 700;
  font-size: 16px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* CTA final */
.cta-band {
  background: var(--gradient-brand);
  color: var(--color-white);
  padding-block: 80px;
}
.cta-inner { text-align: center; }
.cta-band .section-title { color: var(--color-white); }
.cta-band .section-copy { color: rgba(255,255,255,.9); margin-inline: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.cta-band .btn-primary { background: var(--color-white); color: var(--color-secondary-dark); }
.cta-band .btn-ghost { border-color: var(--color-white); color: var(--color-white); }
.cta-contact { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; font-size: 14px; opacity: .9; }

/* Footer */
.site-footer { background: var(--color-bg-dark); color: var(--color-text-muted); padding-block: 56px 24px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand p { margin-top: 12px; font-size: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--color-text-muted); }
.footer-links a:hover { color: var(--color-primary-light); }
.footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid rgba(148, 163, 184, .15);
  font-size: 13px;
}

@media (max-width: 680px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* Icon containers (fallback via gradient background si Lucide no carga) */
.feature-card > i,
.profile-card > i,
.solution-card > i,
.trust-card > i,
.diff-card > i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: var(--color-white);
  margin-bottom: 16px;
}
.feature-card h3, .feature-card h4,
.profile-card h3,
.solution-card h3,
.diff-card h3 { margin-bottom: 8px; }
.feature-card p, .profile-card p, .solution-card p, .diff-card p { color: var(--color-text-light-muted); }
.section-dark .feature-card p,
.section-dark .profile-card p,
.section-dark .solution-card p,
.section-dark .diff-card p { color: var(--color-text-muted); }
.feature-list { margin: 16px 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.feature-list li { padding-left: 20px; position: relative; }
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}
.feature-benefit { font-weight: 600; margin-bottom: 12px; }

/* Fase 8: matriz, diferenciales, confianza, onboarding, galeria */
#funcionalidades .container,
#implementacion .container { margin-bottom: 64px; }
#funcionalidades .container:last-child,
#implementacion .container:last-child { margin-bottom: 0; }

.trust-card, .step-card { text-align: center; }
.step-number {
  display: inline-block;
  font-family: Montserrat, sans-serif;
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.gallery-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1024px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) { .gallery-grid { grid-template-columns: 1fr; } }

/* Reveal on-scroll (contrato 2.7.3) */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s, transform .5s;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}