/* ============================================================
   h3oGROUP Landing – Hoja de estilos principal
   Premium | Tecnológico | Minimalista | Alta conversión
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --color-bg: #0A0E1A;
  --color-surface: #101524;
  --color-glass-bg: rgba(16, 21, 36, 0.6);
  --color-glass-border: rgba(255, 255, 255, 0.06);

  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-secondary: #8B5CF6;
  --color-secondary-hover: #7C3AED;

  --color-text: #F1F5F9;
  --color-text-secondary: #CBD5E1;
  --color-text-muted: #94A3B8;

  --color-success: #10B981;
  --color-danger: #EF4444;

  --glass-blur: 12px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --container-max: 1200px;
  --container-padding: 1.5rem;
  --section-gap: 6rem;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 1rem;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

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

/* ---------- Tipografía ---------- */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-sm {
  font-size: 0.875rem;
  padding: 0.5rem 1.25rem;
}

.btn-lg {
  font-size: 1.05rem;
  padding: 0.9rem 2rem;
}

.btn-xl {
  font-size: 1.15rem;
  padding: 1rem 2.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
  color: white;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--color-text);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.25);
}

/* ---------- Header / Navegación ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10, 14, 26, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo-img {
  height: 36px;
  width: auto;
}

.main-nav .nav-list {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
}
.nav-link-cta {
  color: var(--color-primary);
}

/* Menú hamburguesa (móvil) */
.menu-toggle {
  display: none; /* visible solo en mobile */
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1000;
}
.menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.menu-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle-icon span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .main-nav {
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 1rem 0;
    display: none;
  }
  .main-nav.nav-open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }
  .nav-link {
    display: block;
    padding: 0.75rem 2rem;
    width: 100%;
    text-align: center;
  }
  .menu-toggle {
    display: flex;
  }
  .header-inner .btn-sm {
    margin-left: auto;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 5rem 0 6rem;
  text-align: center;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 750px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(to right, #fff, #CBD5E1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.hero-visual {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 700px;
  height: 700px;
  pointer-events: none;
  z-index: 0;
}

.hero-glow {
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(59,130,246,0.15) 0%, transparent 70%);
  filter: blur(80px);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
}

/* ---------- Marcas ---------- */
.brands {
  padding: 3rem 0 5rem;
}

.brands-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem 3rem;
  opacity: 0.8;
}
.brands-grid img {
  filter: grayscale(1) brightness(2) contrast(0.9);
  transition: filter var(--transition-base), opacity var(--transition-base);
}
.brands-grid img:hover {
  filter: grayscale(0) brightness(1);
  opacity: 1;
}

/* ---------- Diferenciales ---------- */
.differentials {
  padding: var(--section-gap) 0;
}

.differentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.diff-card {
  background: var(--color-surface);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}
.diff-card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
}

.diff-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(139,92,246,0.15));
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.diff-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.diff-text {
  color: var(--color-text-secondary);
  font-size: 0.975rem;
}

/* ---------- Comparativa ---------- */
.comparison {
  padding: var(--section-gap) 0;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.comparison-card {
  background: var(--color-surface);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.comparison-bad {
  border-left: 4px solid rgba(239,68,68,0.6);
}

.comparison-good {
  border-left: 4px solid rgba(16,185,129,0.6);
  background: linear-gradient(145deg, rgba(16,185,129,0.05), rgba(59,130,246,0.05));
}

.comparison-card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.comparison-list li {
  padding: 0.5rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text-secondary);
}
.comparison-list li::before {
  content: "✕";
  color: var(--color-danger);
  font-weight: bold;
  margin-top: 2px;
}
.comparison-good .comparison-list li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: bold;
}

.comparison-note {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ---------- Tabla de medios ---------- */
.media-table-section {
  padding: var(--section-gap) 0;
}

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-glass-border);
}

.media-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  min-width: 700px;
}

.media-table th {
  background: rgba(255,255,255,0.03);
  text-align: left;
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-glass-border);
}

.media-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  font-size: 0.95rem;
}

.media-table tbody tr:hover {
  background: rgba(59,130,246,0.04);
}

.cell-medium {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.media-favicon {
  border-radius: 4px;
  flex-shrink: 0;
}

.media-link {
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.media-link:hover {
  color: var(--color-primary);
}

.media-lang {
  font-size: 0.7rem;
  background: rgba(255,255,255,0.1);
  padding: 0.15em 0.5em;
  border-radius: 4px;
  text-transform: uppercase;
}

.metrics-note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Responsive: tarjetas en móvil */
@media (max-width: 768px) {
  .table-responsive {
    overflow-x: visible;
  }
  .media-table,
  .media-table tbody,
  .media-table tr,
  .media-table td {
    display: block;
    width: 100%;
  }
  .media-table thead {
    display: none;
  }
  .media-table tr {
    margin-bottom: 1.5rem;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-glass-border);
    padding: 1rem;
  }
  .media-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: none;
    padding: 0.5rem 0.25rem;
    font-size: 0.95rem;
  }
  .media-table td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-right: 1rem;
    white-space: nowrap;
  }
  .cell-medium {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
  .media-link {
    font-size: 1rem;
  }
  .media-table td .btn {
    width: 100%;
    text-align: center;
  }
}

/* ---------- Qué incluye ---------- */
.whats-included {
  padding: var(--section-gap) 0;
}

.included-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.included-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: border-color var(--transition-base);
}
.included-item:hover {
  border-color: var(--color-glass-border);
}

.included-icon {
  color: var(--color-primary);
}

.included-title {
  font-weight: 600;
  font-size: 1.1rem;
}

.included-text {
  color: var(--color-text-secondary);
  font-size: 0.925rem;
}

/* ---------- Descuentos ---------- */
.volume-discounts {
  padding: var(--section-gap) 0;
}

.discounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.discount-card {
  background: var(--color-surface);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition-base), transform var(--transition-base);
}
.discount-card:hover {
  border-color: rgba(59,130,246,0.35);
  transform: translateY(-3px);
}

.discount-card-highlight {
  border-color: rgba(139,92,246,0.5);
  background: linear-gradient(145deg, rgba(139,92,246,0.08), rgba(59,130,246,0.05));
}

.discount-range {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.discount-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.discount-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.discounts-note {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ---------- Cómo funciona ---------- */
.how-it-works {
  padding: var(--section-gap) 0;
}

.steps-list {
  counter-reset: step;
  max-width: 800px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  align-items: flex-start;
}
.step-item:last-child {
  border-bottom: none;
}

.step-number {
  font-size: 2rem;
  font-weight: 700;
  color: rgba(59,130,246,0.3);
  flex-shrink: 0;
  width: 50px;
  line-height: 1;
}

.step-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-text {
  color: var(--color-text-secondary);
}

/* ---------- FAQ ---------- */
.faq {
  padding: var(--section-gap) 0;
}

.faq-visible {
  margin-bottom: 3rem;
}

.faq-list-visible {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.faq-question-visible {
  font-weight: 600;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.faq-answer-visible {
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Acordeón */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-accordion-item {
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.faq-accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 1.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.faq-accordion-trigger:hover,
.faq-accordion-trigger:focus-visible {
  color: var(--color-primary);
}
.faq-accordion-trigger:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.faq-accordion-icon {
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform var(--transition-base);
}

.faq-accordion-trigger[aria-expanded="true"] .faq-accordion-icon {
  transform: rotate(45deg);
}

.faq-accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-accordion-panel.is-open {
  max-height: 500px;
  padding-bottom: 1.5rem;
}

.faq-accordion-answer {
  color: var(--color-text-secondary);
  font-size: 0.975rem;
  line-height: 1.7;
}

/* ---------- CTA Final ---------- */
.cta-final {
  position: relative;
  padding: 5rem 0;
  text-align: center;
  background: linear-gradient(180deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.05) 100%);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}

.cta-final-content {
  position: relative;
  z-index: 2;
}

.cta-final-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-final-text {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 550px;
  margin: 0 auto 2rem;
}

.cta-final-subtext {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 1.5rem;
}

.cta-final-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139,92,246,0.2) 0%, transparent 70%);
  filter: blur(100px);
  z-index: 0;
  pointer-events: none;
}

/* ---------- Contacto ---------- */
.contact-section {
  padding: var(--section-gap) 0;
}

.contact-placeholder {
  text-align: center;
  color: var(--color-text-muted);
  padding: 3rem;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-glass-border);
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.footer-logo {
  height: 30px;
  width: auto;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  width: 100%;
  text-align: center;
  margin-top: 1.5rem;
}

/* ---------- Animaciones al hacer scroll ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- prefers-reduced-motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Utilidades ---------- */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* ---------- Ajustes responsive globales ---------- */
@media (max-width: 768px) {
  :root {
    --section-gap: 4rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .cta-final-title {
    font-size: 2rem;
  }
  .comparison-grid,
  .differentials-grid,
  .discounts-grid,
  .included-grid {
    grid-template-columns: 1fr;
  }
  .step-item {
    flex-direction: column;
    gap: 0.5rem;
  }
}