/*
 * Hoja de estilos moderna para la landing (UI en español)
 * - Diseño con gradientes, glassmorphism y tipografías contemporáneas
 * - Comentarios en español para documentación
 */

/* Importar fuentes de Google */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
  /* Paleta de colores moderna */
  --bg: #0b1020;               /* Fondo profundo azulado */
  --fg: #e6eaf2;               /* Texto principal claro */
  --muted: #a6b0c3;            /* Texto secundario */
  --primary: #7c3aed;          /* Morado vibrante */
  --primary-2: #2563eb;        /* Azul moderno */
  --accent: #06b6d4;           /* Cian brillante */
  --success: #10b981;          /* Verde éxito */
  --warning: #f59e0b;          /* Ámbar */

  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.16);

  --radius: 16px;
  --radius-lg: 20px;
  --shadow-1: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* Variables para tema claro (aplicadas cuando html[data-theme="light"]) */
html[data-theme="light"] {
  --bg: #f7f8fc;               /* Fondo claro */
  --fg: #0b1020;               /* Texto oscuro */
  --muted: #5b6475;            /* Texto secundario oscuro */
  --primary: #7c3aed;          /* Conserva identidad */
  --primary-2: #2563eb;
  --accent: #0ea5b7;
  --success: #089981;
  --warning: #b45309;

  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.08);
}

/* Reset y base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(124,58,237,0.15), transparent 60%),
              radial-gradient(1000px 500px at 90% 20%, rgba(37,99,235,0.15), transparent 60%),
              radial-gradient(900px 600px at 50% 90%, rgba(6,182,212,0.12), transparent 60%),
              var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
/* Fondo en modo claro: gradientes más sutiles */
html[data-theme="light"] body {
  background: radial-gradient(1200px 600px at 10% 10%, rgba(124,58,237,0.08), transparent 60%),
              radial-gradient(1000px 500px at 90% 20%, rgba(37,99,235,0.08), transparent 60%),
              radial-gradient(900px 600px at 50% 90%, rgba(6,182,212,0.06), transparent 60%),
              var(--bg);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { border: 0; background: none; cursor: pointer; }

.container { width: 92%; max-width: 1200px; margin: 0 auto; }

/* Header pegajoso con glassmorphism */
.header {
  position: sticky; top: 0; z-index: 1000;
  background: linear-gradient(to bottom, rgba(11,16,32,0.8), rgba(11,16,32,0.4));
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; letter-spacing: 0.5px; font-size: 1.4rem;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand .logo { height: 28px; width: auto; display: block; }
@media (min-width: 768px) { .brand .logo { height: 32px; } }
/* Alternar logo por tema */
.brand .logo-light { display: none; }
html[data-theme="light"] .brand .logo-light { display: block; }
html[data-theme="light"] .brand .logo-dark { display: none; }
.nav a { margin-left: 22px; color: var(--muted); font-weight: 500; position: relative; }
.nav a:hover { color: var(--fg); }
.nav a::after { content: ''; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width .25s ease; }
.nav a:hover::after { width: 100%; }
html[data-theme="light"] .nav a { color: #ffffff; }
html[data-theme="light"] .nav a:hover { color: #ffffff; }

/* CTA del menú (Acceso y Registro) como píldoras destacadas */
.nav .nav-cta { 
  padding: 8px 14px; border-radius: 999px; font-weight: 600; line-height: 1; 
  border: 1px solid var(--glass-border); background: rgba(255,255,255,0.06); color: var(--fg);
  box-shadow: var(--shadow-1); transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease; 
}
.nav .nav-cta:hover { background: rgba(255,255,255,0.12); box-shadow: var(--shadow-2); transform: translateY(-2px); }
.nav .nav-cta::after { display: none; }

/* Variante primaria para Registro */
.nav .nav-cta.signup { background: linear-gradient(90deg, var(--primary), var(--accent)); color: #ffffff; border-color: transparent; }
.nav .nav-cta.signup:hover { box-shadow: var(--shadow-2), 0 0 0 6px rgba(124,58,237,0.18); }

/* Variante contorno para Acceso */
.nav .nav-cta.login { backdrop-filter: blur(6px); }

/* Ajustes en tema claro */
html[data-theme="light"] .nav .nav-cta { border-color: rgba(0,0,0,0.08); background: rgba(0,0,0,0.04); color: #0b1020; }
html[data-theme="light"] .nav .nav-cta:hover { background: rgba(0,0,0,0.08); }
html[data-theme="light"] .nav .nav-cta.signup { color: #ffffff; }

/* Separador en el menú desktop */
.nav .nav-sep { display: inline-block; width: 1px; height: 24px; background: rgba(255,255,255,0.14); margin: 0 12px; vertical-align: middle; }
html[data-theme="light"] .nav .nav-sep { background: rgba(0,0,0,0.12); }

/* Botón hamburguesa (solo móvil) */
.menu-toggle {
  display: none; margin-left: 10px; width: 40px; height: 40px; border-radius: 999px;
  display: none; /* visible en móvil */
  place-items: center; color: var(--fg);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.06);
  box-shadow: var(--shadow-1);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.menu-toggle:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); background: rgba(255,255,255,0.12); }
html[data-theme="light"] .menu-toggle { background: rgba(0,0,0,0.04); }
html[data-theme="light"] .menu-toggle:hover { background: rgba(0,0,0,0.08); }

/* Menú móvil overlay */
.mobile-nav { position: fixed; inset: 0; background: rgba(11,16,32,0.45); backdrop-filter: blur(6px); opacity: 0; pointer-events: none; transition: opacity .25s ease; z-index: 1100; }
.mobile-nav.open { opacity: 1; pointer-events: auto; }
.mobile-nav-panel {
  position: absolute; right: 0; top: 0; height: 100%;
  width: 90vw; max-width: 440px; /* ancho cómodo en móviles */
  background: var(--bg); border-left: 1px solid var(--glass-border);
  padding: 22px; box-sizing: border-box; display: flex; flex-direction: column; gap: 10px;
  transform: translateX(100%); transition: transform .28s ease;
  box-shadow: -24px 0 60px rgba(0,0,0,0.45);
  overflow-y: auto; overflow-x: hidden; -webkit-overflow-scrolling: touch;
}
.mobile-nav.open .mobile-nav-panel { transform: translateX(0); }
.mobile-nav-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; color: var(--fg); }
.menu-close { 
  width: 36px; height: 36px; border-radius: 999px; display: grid; place-items: center; color: var(--fg);
  border: 1px solid var(--glass-border); background: rgba(255,255,255,0.06); box-shadow: var(--shadow-1);
}
.mobile-nav a { 
  display: flex; align-items: center; gap: 10px; 
  padding: 14px 12px; border-radius: 12px; color: var(--fg); border: 1px solid transparent; font-size: 1.05rem; 
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mobile-nav a:hover { background: rgba(255,255,255,0.06); border-color: var(--glass-border); }
.mobile-nav .nav-cta { text-align: center; }
.mobile-nav hr { border: 0; border-top: 1px solid var(--glass-border); margin: 8px 0; }

/* Evitar scroll de fondo cuando menú está abierto */
.no-scroll { overflow: hidden; }

/* Botón de cambio de tema */
.theme-toggle {
  margin-left: 14px; width: 40px; height: 40px; border-radius: 999px;
  display: grid; place-items: center; color: var(--fg);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.06);
  box-shadow: var(--shadow-1);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.theme-toggle:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); background: rgba(255,255,255,0.12); }
html[data-theme="light"] .theme-toggle { background: rgba(0,0,0,0.04); }
html[data-theme="light"] .theme-toggle:hover { background: rgba(0,0,0,0.08); }

/* Hero con slider de fondo */
.hero {
  position: relative; min-height: 92vh; display: grid; place-items: center; overflow: hidden;
}
.hero::before { /* brillo degradado */
  content: ''; position: absolute; inset: -10%;
  background: radial-gradient(600px 300px at 20% 30%, rgba(124,58,237,0.25), transparent 60%),
              radial-gradient(600px 300px at 80% 20%, rgba(37,99,235,0.25), transparent 60%),
              radial-gradient(600px 300px at 50% 80%, rgba(6,182,212,0.2), transparent 60%);
  filter: blur(30px); z-index: 0;
}
.hero-slider { position: absolute; inset: 0; z-index: 0; }
.slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1.5s ease; transform: scale(1.03);
}
.slide.active { opacity: 0.55; animation: kenburns-zoom 16s ease-in-out infinite; }

@keyframes kenburns-zoom {
  0% { transform: scale(1.03); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1.03); }
}

.hero-content { position: relative; z-index: 1; text-align: center; padding: 80px 0; }
.hero-eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 2px; font-weight: 600; font-size: 0.85rem; }
.hero-title {
  font-family: 'Space Grotesk', sans-serif; font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.1; margin: 14px 0 10px;
  text-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.hero-subtitle { color: var(--muted); font-size: clamp(1rem, 2.6vw, 1.25rem); max-width: 820px; margin: 0 auto 26px; }

.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.btn {
  padding: 14px 22px; border-radius: 999px; font-weight: 600; letter-spacing: .2px;
  box-shadow: var(--shadow-1); transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn-primary { background: linear-gradient(90deg, var(--primary), var(--accent)); color: white; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-2), 0 0 0 6px rgba(124,58,237,0.18); }
.btn-primary:active { transform: translateY(-1px); }
.btn-ghost { color: var(--fg); border: 1px solid var(--glass-border); background: rgba(255,255,255,0.06); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
html[data-theme="light"] .btn-ghost { border-color: rgba(0,0,0,0.08); background: rgba(0,0,0,0.04); }
html[data-theme="light"] .btn-ghost:hover { background: rgba(0,0,0,0.08); }

/* Secciones con tarjetas de vidrio */
.section { padding: 88px 0; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 2px; font-weight: 600; font-size: 0.8rem; }
.section-title { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 10px 0 8px; }
.section-sub { color: var(--muted); max-width: 760px; margin: 0 auto; }

.grid {
  display: grid; gap: 22px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}
.card {
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-1);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  will-change: transform;
}
.card:hover { --liftY: -6px; box-shadow: var(--shadow-2); border-color: rgba(255,255,255,0.24); }
html[data-theme="light"] .card:hover { border-color: rgba(0,0,0,0.2); }
.card-icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(6,182,212,0.25));
}
.card h4 { margin: 6px 0 8px; font-size: 1.1rem; }
.card p { color: var(--muted); margin: 0; }

/* Showcase / Dashboard preview (placeholder) */
.showcase { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: stretch; }
.showcase .panel { border-radius: var(--radius-lg); overflow: hidden; position: relative; background: linear-gradient(160deg, rgba(124,58,237,0.12), rgba(37,99,235,0.12)); border: 1px solid var(--glass-border); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; will-change: transform; }
.showcase .panel:hover { --liftY: -6px; box-shadow: var(--shadow-2); border-color: rgba(255,255,255,0.24); }
.showcase .panel::after { content: ''; position: absolute; inset: 0; background: radial-gradient(400px 200px at 75% 20%, rgba(255,255,255,0.12), transparent 60%); pointer-events: none; }
.showcase .copy { display: flex; flex-direction: column; justify-content: center; }
.showcase .copy p { color: var(--muted); }

/* Pricing */
.pricing { grid-template-columns: repeat(3, 1fr); }
.price-card { padding: 28px; border-radius: var(--radius); background: var(--glass-bg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-1); }
.price-card.featured { background: linear-gradient(160deg, rgba(124,58,237,0.18), rgba(6,182,212,0.18)); border: 1px solid rgba(255,255,255,0.28); transform: scale(1.02); }
.price-card { transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; will-change: transform; }
.price-card:hover { --liftY: -6px; box-shadow: var(--shadow-2); border-color: rgba(255,255,255,0.24); }
.price { font-size: 2.2rem; font-weight: 700; margin: 6px 0 10px; }
.price small { font-size: 0.8rem; color: var(--muted); }
.features { list-style: none; padding: 0; margin: 12px 0 18px; }
.features li { margin: 8px 0; color: var(--muted); }

/* Testimonials */
.testimonials { grid-template-columns: repeat(3, 1fr); }
.quote { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 22px; }
.quote { transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; will-change: transform; }
.quote:hover { --liftY: -6px; box-shadow: var(--shadow-2); border-color: rgba(255,255,255,0.24); }
.avatar { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); display: inline-grid; place-items: center; font-weight: 700; margin-right: 10px; }

/* Contact */
.form { max-width: 680px; margin: 0 auto; }
.input { width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--glass-border); background: rgba(255,255,255,0.04); color: var(--fg); outline: none; }
.input:focus { border-color: rgba(255,255,255,0.28); box-shadow: 0 0 0 4px rgba(124,58,237,0.18); }
.label { display: block; margin: 12px 0 6px; color: var(--muted); font-weight: 600; }

/* Footer */
.footer { text-align: center; color: var(--muted); padding: 32px 0 40px; border-top: 1px solid rgba(255,255,255,0.08); margin-top: 60px; }
html[data-theme="light"] .footer { border-top: 1px solid rgba(0,0,0,0.08); }

/* Utilidades de animación */
.reveal { opacity: 0; transform: translateY(calc(var(--liftY, 0px) + 24px)) rotateX(var(--tiltX, 0deg)) rotateY(var(--tiltY, 0deg)); transition: opacity .6s ease, transform .6s ease; transform-style: preserve-3d; backface-visibility: hidden; }
.reveal.in-view { opacity: 1; transform: translateY(var(--liftY, 0px)) rotateX(var(--tiltX, 0deg)) rotateY(var(--tiltY, 0deg)); }

/* Responsive */
@media (max-width: 1024px) {
  .showcase { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .pricing, .testimonials { grid-template-columns: 1fr; }
  .menu-toggle { display: grid; }
  .navbar { padding: 12px 0; }
}