/* ================================================================
   HummingX-BI — Sistema de Diseño Principal
   Versión: 1.0.0
   Descripción: Variables CSS, reset, preloader, navegación y hero.
   Arquitectura: Mobile-first, BEM, Variables CSS nativas.
   ================================================================ */


/* ================================================================
   1. VARIABLES DEL SISTEMA DE DISEÑO (Design Tokens)
   ================================================================ */
:root {
  /* --- Paleta de colores --- */
  /* Fondos oscuros (gradiente Azul Marino Profundo) */
  --color-bg-deepest:     #070E1A;
  --color-bg-base:        #0B1325;
  --color-bg-mid:         #0F1D38;
  --color-bg-elevated:    #132040;
  --color-bg-card:        rgba(15, 29, 56, 0.6);
  --color-bg-card-hover:  rgba(19, 38, 70, 0.8);

  /* Acentos principales */
  --color-teal:           #0D9488;
  --color-teal-light:     #14B8AA;
  --color-teal-glow:      rgba(13, 148, 136, 0.25);
  --color-teal-glow-strong: rgba(13, 148, 136, 0.5);
  --color-purple:         #581C87;
  --color-purple-light:   #7C3AED;
  --color-purple-glow:    rgba(88, 28, 135, 0.3);

  /* Textos */
  --color-text-primary:   #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-text-muted:     #4A5568;
  --color-text-accent:    #0D9488;

  /* Bordes */
  --color-border:         rgba(255, 255, 255, 0.06);
  --color-border-accent:  rgba(13, 148, 136, 0.3);
  --color-border-hover:   rgba(13, 148, 136, 0.7);

  /* --- Tipografía --- */
  --font-display:   'Syncopate', 'Montserrat', sans-serif;
  --font-heading:   'Montserrat', 'Inter', sans-serif;
  --font-body:      'Inter', sans-serif;

  /* Escala tipográfica (base 16px, ratio 1.25) */
  --text-xs:        0.75rem;    /* 12px */
  --text-sm:        0.875rem;   /* 14px */
  --text-base:      1rem;       /* 16px */
  --text-lg:        1.125rem;   /* 18px */
  --text-xl:        1.25rem;    /* 20px */
  --text-2xl:       1.5rem;     /* 24px */
  --text-3xl:       1.875rem;   /* 30px */
  --text-4xl:       2.25rem;    /* 36px */
  --text-5xl:       3rem;       /* 48px */
  --text-6xl:       3.75rem;    /* 60px */
  --text-7xl:       4.5rem;     /* 72px */

  /* --- Espaciado --- */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;
  --space-32:  8rem;

  /* --- Contenedor --- */
  --container-max:  1280px;
  --container-pad:  var(--space-6);

  /* --- Bordes redondeados --- */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   18px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* --- Sombras --- */
  --shadow-glow-teal:   0 0 30px rgba(13, 148, 136, 0.2), 0 0 60px rgba(13, 148, 136, 0.05);
  --shadow-glow-purple: 0 0 30px rgba(88, 28, 135, 0.2), 0 0 60px rgba(88, 28, 135, 0.05);
  --shadow-card:        0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 4px rgba(0, 0, 0, 0.3);
  --shadow-card-hover:  0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(13, 148, 136, 0.15);
  --shadow-btn:         0 4px 20px rgba(13, 148, 136, 0.3);
  --shadow-btn-hover:   0 6px 30px rgba(13, 148, 136, 0.5), 0 0 20px rgba(13, 148, 136, 0.3);

  /* --- Transiciones --- */
  --transition-fast:   150ms ease;
  --transition-base:   300ms ease;
  --transition-slow:   600ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- Z-index --- */
  --z-preloader: 9999;
  --z-navbar:    1000;
  --z-overlay:    800;
  --z-dropdown:   900;
  --z-base:         1;
}


/* ================================================================
   2. RESET & BASE STYLES
   ================================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ocultar scroll-bar cuando el preloader está activo */
body.loading {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
}

/* Focus visible accesible */
:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Selección de texto */
::selection {
  background: var(--color-teal-glow);
  color: var(--color-text-primary);
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-deepest);
}
::-webkit-scrollbar-thumb {
  background: var(--color-teal);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-teal-light);
}


/* ================================================================
   3. UTILIDADES GLOBALES
   ================================================================ */

/* Contenedor centrado responsive */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Texto en gradiente Teal → Purple */
.gradient-text {
  background: linear-gradient(135deg, var(--color-teal-light) 0%, var(--color-purple-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* X de HummingX en color acento */
.accent-x {
  color: var(--color-teal);
}

/* Encabezados de sección */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-teal);
  background: rgba(13, 148, 136, 0.1);
  border: 1px solid rgba(13, 148, 136, 0.3);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.7;
}


/* ================================================================
   4. BOTONES (Sistema global)
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
}

/* Botón primario (Teal sólido) */
.btn--primary {
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
  color: white;
  box-shadow: var(--shadow-btn);
}

.btn--primary:hover {
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-2px);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-btn);
}

/* Botón con efecto glow pulsante */
.btn--glow {
  animation: btn-glow-pulse 3s ease-in-out infinite;
}

.btn--glow:hover {
  animation: none;
  box-shadow: 0 0 0 4px var(--color-teal-glow), var(--shadow-btn-hover);
}

@keyframes btn-glow-pulse {
  0%, 100% { box-shadow: var(--shadow-btn); }
  50%       { box-shadow: 0 0 0 6px var(--color-teal-glow), var(--shadow-btn-hover); }
}

/* Botón ghost (contorno) */
.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-5);
}

.btn--ghost:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* Botón en navbar */
.btn--nav {
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
  color: white;
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-btn);
}

.btn--nav:hover {
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-1px);
}

/* Botón ancho completo */
.btn--full {
  width: 100%;
  padding-block: var(--space-4);
  font-size: var(--text-base);
}

/* Efecto shimmer en botones (pseudo-elemento) */
.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.btn--primary:hover::before {
  transform: translateX(100%);
}


/* ================================================================
   5. PRELOADER VECTORIAL INTERACTIVO — HummingX-BI
   ================================================================ */

/* Contenedor principal: ocupa toda la pantalla */
.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-preloader);
  background: #050b14;                /* Fondo oscuro profundo */
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  visibility: visible;
  opacity: 1;
}

/* Estado: oculto */
.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Resplandor de fondo */
.preloader__background-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.15) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 1;
}

/* Contenido centrado */
.preloader__content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 400px;
  padding: var(--space-6);
}

/* Contenedor del colibrí */
.preloader__bird-container {
  width: 220px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: hover-flight 2.8s ease-in-out infinite,
             hummingbird-vibe 0.09s linear infinite;
  transform-style: preserve-3d;
  will-change: transform;
}

.preloader__bird {
  height: 140px;
  width: 140px;
  max-width: 100%;
  filter: drop-shadow(0 8px 32px rgba(13, 148, 136, 0.45));
  will-change: transform;
  transition: transform 1.2s cubic-bezier(0.25, 1, 0.35, 1);
}

/* --- Animación de Partes Internas del Colibrí (SVG Inline) --- */
.logo-wing-top,
.logo-wing-bottom {
  transform-origin: 430px 380px;
  will-change: transform;
}

.logo-body {
  transform-origin: 570px 550px;
  will-change: transform;
}

/* Animaciones del preloader (Aleteo ultra rápido) */
#preloader-bird .logo-wing-top {
  animation: flap-top 0.08s ease-in-out infinite alternate;
}

#preloader-bird .logo-wing-bottom {
  animation: flap-bottom 0.08s ease-in-out infinite alternate;
}

#preloader-bird .logo-body {
  animation: body-bob 0.16s ease-in-out infinite alternate;
}

/* Animaciones en la navbar al hacer HOVER (Aleteo interactivo premium) */
.nav__logo:hover .nav__logo-icon .logo-wing-top {
  animation: flap-top 0.12s ease-in-out infinite alternate;
}

.nav__logo:hover .nav__logo-icon .logo-wing-bottom {
  animation: flap-bottom 0.12s ease-in-out infinite alternate;
}

.nav__logo:hover .nav__logo-icon .logo-body {
  animation: body-bob 0.24s ease-in-out infinite alternate;
}

/* Keyframes de aleteo realista de colibrí */
@keyframes flap-top {
  0% {
    transform: rotate(-35deg) scaleX(0.7) scaleY(0.75) skewY(-5deg);
  }
  100% {
    transform: rotate(42deg) scaleX(1.15) scaleY(1.05) skewY(8deg);
  }
}

@keyframes flap-bottom {
  0% {
    transform: rotate(35deg) scaleX(0.75) scaleY(0.7) skewY(5deg);
  }
  100% {
    transform: rotate(-42deg) scaleX(1.1) scaleY(1.05) skewY(-8deg);
  }
}

@keyframes body-bob {
  0% {
    transform: translateY(-3px) rotate(-1.5deg);
  }
  100% {
    transform: translateY(3px) rotate(1.5deg);
  }
}


@keyframes hover-flight {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%      { transform: translateY(-9px) translateX(6px) rotate(1deg); }
  66%      { transform: translateY(7px) translateX(-6px) rotate(-1deg); }
}

@keyframes hummingbird-vibe {
  0%, 100% { transform: translate(0, 0) scale(1) rotate(0); }
  20%      { transform: translate(-1px, 1px) scale(0.99) rotate(-0.3deg); }
  40%      { transform: translate(1px, -1px) scale(1.01) rotate(0.3deg); }
  60%      { transform: translate(-1.5px, -0.5px) scale(1) rotate(0); }
  80%      { transform: translate(1px, 1.5px) scale(0.99) rotate(-0.2deg); }
}

/* Título de marca */
.preloader__brand-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: white;
  margin-top: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-shadow: 0 0 25px rgba(13, 148, 136, 0.4);
  animation: title-fade-in 0.8s ease 0.2s both;
}

.preloader__brand-sub {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-teal);
  padding: 1px 5px;
  border: 1px solid var(--color-teal);
  border-radius: 3px;
  text-shadow: none;
}

@keyframes title-fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Barra de progreso glassmorphic */
.preloader__progress-bar-container {
  width: 220px;
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  margin-top: var(--space-6);
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
  animation: bar-fade-in 0.8s ease 0.4s both;
}

.preloader__progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
  box-shadow: 0 0 8px var(--color-teal);
  transition: width 0.4s cubic-bezier(0.1, 0.8, 0.25, 1);
}

@keyframes bar-fade-in {
  from { opacity: 0; transform: scaleX(0.85); }
  to   { opacity: 1; transform: scaleX(1); }
}

/* Texto de estado */
.preloader__status-text {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.22);
  margin-top: var(--space-4);
  transition: opacity 0.4s ease;
  animation: text-pulse 2s ease-in-out infinite;
}

@keyframes text-pulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

/* --- Estados de vuelo dinámico (para JS) --- */
.preloader__bird.is-migrating {
  animation: hummingbird-vibe 0.04s linear infinite !important; /* Vibración acelerada en vuelo rápido */
  z-index: 10000;
}

/* Destello en el logo de la navbar al aterrizar */
.nav__logo.logo-landing-glow {
  position: relative;
}

.nav__logo.logo-landing-glow::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 30px; /* Centrado aproximado sobre el logo del pájaro */
  transform: translate(-50%, -50%) scale(0.2);
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.75) 0%, transparent 68%);
  border-radius: 50%;
  pointer-events: none;
  animation: landing-flash 0.9s cubic-bezier(0.08, 0.82, 0.17, 1) both;
  z-index: 50;
}

@keyframes landing-flash {
  0%   { transform: translate(-50%, -50%) scale(0.2); opacity: 0; }
  10%  { opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1.6); opacity: 0; }
}

/* --- Estilo del Logo del Header e Interacción Hover --- */
.nav__logo-icon {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1),
              filter 0.4s ease;
  will-change: transform;
}

.nav__logo:hover .nav__logo-icon {
  transform: scale(1.22) rotate(-8deg);
  filter: drop-shadow(0 4px 16px rgba(13, 148, 136, 0.5));
}

/* Pulso en el nodo de red (icono de tarjeta 3) — conservado para la sección de atributos */
.node-pulse {
  animation: node-pulse-anim 2s ease-in-out infinite;
}

@keyframes node-pulse-anim {
  0%   { r: 8;  opacity: 0.4; }
  50%  { r: 14; opacity: 0.1; }
  100% { r: 8;  opacity: 0.4; }
}



/* ================================================================
   6. CONTENIDO PRINCIPAL (Oculto mientras carga)
   ================================================================ */
.main-content {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s ease 0.1s, transform 0.7s ease 0.1s;
}

.main-content.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ================================================================
   7. NAVEGACIÓN
   ================================================================ */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  padding-block: var(--space-4);
  transition: all var(--transition-base);
  background: rgba(5, 11, 20, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Navbar con blur al hacer scroll */
.nav-header.scrolled {
  padding-block: var(--space-3);
  background: rgba(5, 11, 20, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
  line-height: 1;
}

.nav__logo-sub {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-teal);
  padding: 1px 5px;
  border: 1px solid var(--color-teal);
  border-radius: 3px;
  letter-spacing: 0.15em;
  vertical-align: middle;
  margin-left: 2px;
}

/* Menú desktop */
.nav__menu {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-teal);
  transition: width var(--transition-base);
}

.nav__link:hover {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  width: 100%;
}

.nav__link[aria-current="page"] {
  color: var(--color-text-primary);
}

/* Hamburger (móvil) */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.nav__hamburger:hover {
  background: rgba(255, 255, 255, 0.05);
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* Hamburger → X cuando el menú está abierto */
.nav__hamburger.is-active .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
  background: var(--color-teal);
}
.nav__hamburger.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
  background: var(--color-teal);
}

/* Menú móvil */
.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(7, 14, 26, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  padding: var(--space-6);
}

.mobile-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-menu__link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-primary);
  padding-left: var(--space-5);
}

.mobile-menu__cta {
  margin-top: var(--space-4);
  text-align: center;
}


/* ================================================================
   8. HERO SECTION
   ================================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-block: var(--space-32) var(--space-32);
  background: linear-gradient(
    165deg,
    var(--color-bg-deepest)  0%,
    var(--color-bg-base)    40%,
    var(--color-bg-mid)     70%,
    var(--color-bg-elevated) 100%
  );
}

/* Canvas de partículas */
.hero__particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 1; /* Eliminada la opacidad 0.6 para que brillen con todo su resplandor */
}

/* Rejilla decorativa de fondo */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  z-index: 0;
}

/* Orbes de luz */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -200px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.12) 0%, transparent 70%);
  animation: orb-float 8s ease-in-out infinite;
}

.hero__orb--2 {
  width: 500px;
  height: 500px;
  bottom: -150px;
  left: -150px;
  background: radial-gradient(circle, rgba(88, 28, 135, 0.1) 0%, transparent 70%);
  animation: orb-float 10s ease-in-out infinite 2s;
}

@keyframes orb-float {
  0%, 100% { transform: translate(0, 0)   scale(1);    }
  33%       { transform: translate(20px, -30px) scale(1.05); }
  66%       { transform: translate(-15px, 20px) scale(0.95); }
}

/* Contenido del hero */
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Eyebrow label */
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal);
  background: rgba(13, 148, 136, 0.08);
  border: 1px solid rgba(13, 148, 136, 0.25);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
}

.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-teal);
  animation: dot-blink 2s ease-in-out infinite;
}

@keyframes dot-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* Titular principal */
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 7vw, var(--text-7xl));
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
}

/* Subtítulo */
.hero__subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--color-text-secondary);
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

/* Grupo de CTAs */
.hero__cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero__cta-group .btn--primary {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.hero__cta-group .btn--ghost {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* Métricas de confianza */
.hero__metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  padding: var(--space-4) var(--space-6);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  max-width: fit-content;
  margin-inline: auto;
  gap: var(--space-4);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}

.hero__metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1 1 90px;
  min-width: 160px;
  text-align: center;
}

.hero__metric-number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1;
}

.hero__metric-number span {
  color: var(--color-teal);
  font-size: var(--text-xl);
}

.hero__metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__metric-divider {
  display: none; /* Ocultar por defecto en móvil para evitar roturas visuales al envolver */
  width: 1px;
  height: 40px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* Indicador de scroll */
.hero__scroll-indicator {
  display: none; /* Ocultar por defecto en móvil para evitar amontonamiento */
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  cursor: pointer;
}

.scroll-text {
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-dot-wrapper {
  width: 24px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 6px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--color-teal);
  border-radius: var(--radius-full);
  animation: scroll-dot-anim 1.8s ease-in-out infinite;
}

@keyframes scroll-dot-anim {
  0%   { transform: translateY(0);   opacity: 1;   }
  80%  { transform: translateY(16px); opacity: 0;   }
  100% { transform: translateY(0);   opacity: 0;   }
}


/* ================================================================
   9. ANIMACIONES DE REVEAL (Scroll-triggered)
   ================================================================ */

/* Estado inicial: elementos ocultos */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estado visible: después del IntersectionObserver */
.reveal-up.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible {
  opacity: 1;
  transform: translate(0);
}

/* Delay escalonado para hijos de un grupo */
.reveal-up:nth-child(1) { transition-delay: 0ms;   }
.reveal-up:nth-child(2) { transition-delay: 100ms;  }
.reveal-up:nth-child(3) { transition-delay: 200ms;  }
.reveal-up:nth-child(4) { transition-delay: 300ms;  }
.reveal-up:nth-child(5) { transition-delay: 400ms;  }

/* Dentro del hero: delay acumulado por clase custom */
.hero__eyebrow.reveal-up  { transition-delay: 300ms; }
.hero__title.reveal-up    { transition-delay: 450ms; }
.hero__subtitle.reveal-up { transition-delay: 600ms; }
.hero__cta-group.reveal-up{ transition-delay: 750ms; }
.hero__metrics.reveal-up  { transition-delay: 900ms; }


/* ================================================================
   10. RESPONSIVE — BREAKPOINTS
   ================================================================ */

/* Tablet: ≥ 768px */
@media (min-width: 768px) {
  :root {
    --container-pad: var(--space-8);
  }

  .nav {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
  }

  #nav-cta-btn {
    justify-self: end;
  }

  .nav__menu {
    display: flex;
  }

  .nav__hamburger {
    display: none;
  }

  .mobile-menu {
    display: none;
  }

  .hero__metrics {
    gap: var(--space-10);
    padding: var(--space-5) var(--space-8);
  }

  .hero__metric {
    flex: none;
  }

  .hero__metric-divider {
    display: block;
  }
}

/* Desktop: ≥ 1024px */
@media (min-width: 1024px) {
  :root {
    --container-pad: var(--space-10);
  }
}

/* Large Desktop: ≥ 1280px */
@media (min-width: 1280px) {
  :root {
    --container-pad: var(--space-12);
  }
}

/* Responsive para pantallas de baja altura (evita amontonamientos en laptops) */
@media (max-height: 750px) {
  .hero {
    padding-block: var(--space-24) var(--space-20);
  }
  .hero__eyebrow {
    margin-bottom: var(--space-4);
  }
  .hero__title {
    margin-bottom: var(--space-4);
  }
  .hero__subtitle {
    margin-bottom: var(--space-6);
  }
  .hero__cta-group {
    margin-bottom: var(--space-10);
  }
}

/* Preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .bird-wing-top,
  .bird-wing-bottom,
  .btn--glow,
  .hero__orb--1,
  .hero__orb--2,
  .preloader__bar {
    animation: none !important;
  }
}