:root{
  --bg:#0f1115; --fg:#e8eaf0; --muted:#aab2c0;
  --card:#151824; --card2:#10131c; --line:#23283a;
  --acc1:#6ee7f8; --acc2:#a78bfa; --acc3:#22d3ee;
  /* Altura del header. JS la recalcula en runtime */
  --header-h: 64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Inter,Arial;
  /* Fondo uniforme en todas las secciones */
  background:#0f1115;
  color:var(--fg);
}

/* Container & layout */
.container{width:min(1100px,92vw); margin:0 auto}
.section{
  padding:64px 0;
  scroll-margin-top: calc(var(--header-h) + 12px);
}
.subtitle{color:var(--muted); margin-top:-6px}

/* Header fijo y por encima de todo */
.site-header{
  position:fixed; top:0; left:0; right:0;
  z-index:9999; /* alto para estar sobre cualquier cosa */
  min-height:56px;
  display:flex; align-items:center;
  backdrop-filter:saturate(140%) blur(6px);
  background:rgba(10,12,18,0.9);
  border-bottom:1px solid var(--line);
}
.header-spacer{ height:var(--header-h); }

.nav{display:flex; align-items:center; justify-content:space-between; padding:0 0; position:relative}
.brand{color:var(--fg); text-decoration:none; font-weight:700}
.nav-links{display:flex; gap:16px}
.nav-links a{color:var(--muted); text-decoration:none; font-weight:600}
.nav-links a:hover{color:var(--fg)}
/* Active section highlight */
.nav-links a.active{
  color: var(--fg);
  position: relative;
}
.nav-links a.active::after{
  content: "";
  position: absolute; left: 0; right: 0; bottom: -6px; height: 2px;
  background: linear-gradient(90deg, var(--acc1), var(--acc2));
}

/* Toggle (hamburguesa) */
.nav-toggle{display:none; background:transparent; border:0; width:40px; height:40px; padding:0; cursor:pointer; align-items:center; justify-content:center; flex-direction:column; gap:5px}
.nav-toggle .bar{display:block; width:22px; height:2px; background:var(--fg); border-radius:2px; transition:transform .2s ease, opacity .2s ease}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{padding:72px 0 56px}
.hero-inner{display:grid; grid-template-columns:1.2fr 1fr; gap:28px; align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px); line-height:1.1; margin:0 0 8px}
.hero p{color:var(--muted)}
.grad{
  background:linear-gradient(90deg, var(--acc1), var(--acc2)); /* fallback */
  background:linear-gradient(90deg, color-mix(in oklab, var(--acc1) 85%, transparent), var(--acc2));
  -webkit-background-clip:text; background-clip:text; color:transparent
}
.hero-cta{margin-top:18px; display:flex; gap:12px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  height:44px; padding:0 16px; line-height:1;
  border-radius:14px; text-decoration:none; font-weight:700;
  border:1px solid var(--line); background:var(--card); color:var(--fg);
}
.btn.primary{
  background:linear-gradient(90deg, var(--acc3), var(--acc2)); /* fallback */
  background:linear-gradient(90deg, color-mix(in oklab, var(--acc3) 75%, transparent), var(--acc2));
  color:#0b0d12; border:none;
  transition: background .25s ease, filter .25s ease, box-shadow .25s ease, transform .15s ease;
}
/* Hover/active con un poco más de contraste y profundidad */
.btn.primary:hover{
  /* Gradiente con ligero énfasis en acc2 */
  background:linear-gradient(90deg, var(--acc2), var(--acc3)); /* fallback */
  background:linear-gradient(90deg, color-mix(in oklab, var(--acc2) 85%, transparent), color-mix(in oklab, var(--acc3) 70%, transparent));
  filter: brightness(1.06);
  box-shadow:0 8px 20px rgba(0,0,0,.25);
}
.btn.primary:active{ transform: translateY(1px); filter: brightness(1.02); box-shadow:0 6px 14px rgba(0,0,0,.22); }
.btn.ghost{
  background: transparent;
  transition: background .25s ease, filter .25s ease, box-shadow .25s ease, transform .15s ease, border-color .25s ease;
}
.btn.ghost:hover{
  border-color: var(--acc2);
  /* Fallback */
  background: linear-gradient(90deg, var(--acc1), var(--acc2));
  /* Sutil overlay con color-mix */
  background: linear-gradient(90deg, color-mix(in oklab, var(--acc1) 12%, transparent), color-mix(in oklab, var(--acc2) 12%, transparent));
  box-shadow: 0 6px 16px rgba(0,0,0,.18);
}
.btn.ghost:active{ transform: translateY(1px); filter: brightness(1.02); }
.hero-svg{width:100%; height:auto; filter:drop-shadow(0 10px 30px rgba(0,0,0,.4))}

/* Cards & grids */
.grid{display:grid; gap:18px}
.cards{grid-template-columns:repeat(auto-fit, minmax(240px, 1fr))}
.card{
  background:linear-gradient(180deg, var(--card), var(--card2));
  border:1px solid var(--line); border-radius:18px; padding:16px;
  box-shadow:0 8px 24px rgba(0,0,0,.2);
}
.card h3{margin:6px 0 10px; transition: transform .2s ease, color .2s ease; position:relative; display:inline-block}
.card h3::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  /* Fallback */
  background:linear-gradient(90deg, var(--acc1), var(--acc2));
  /* Softer start on modern browsers */
  background:linear-gradient(90deg, color-mix(in oklab, var(--acc1) 75%, transparent), var(--acc2));
  border-radius:2px;
  transform:scaleX(0); transform-origin:left; transition:transform .2s ease; opacity:.9;
}
.kv{font-size:14px; color:var(--muted)}

/* Tables */
.table-wrapper{overflow:auto; border:1px solid var(--line); border-radius:14px}
table{width:100%; border-collapse:collapse; min-width:680px}
th, td{padding:12px 14px; border-bottom:1px solid var(--line); text-align:left}
th{position:sticky; top:0; background:var(--card2); z-index:1}

/* Canvas de gráficos */
.canvas{width:100%; max-width:900px; border:1px dashed var(--line); border-radius:12px; background:rgba(0,0,0,.15); margin-top:12px}
.legend{display:flex; gap:16px; flex-wrap:wrap; margin-top:10px}
.legend .dot{width:10px; height:10px; border-radius:999px; display:inline-block; background:var(--fg); margin-right:6px}

/* Oculta leyendas duplicadas bajo los grficos de almacenamiento */
#storageLegend, #latencyLegend { display:none; }

/* Video embebido responsivo y con buen estilo */
.video-embed{ position:relative; width:100%; max-width:900px; margin:12px auto; border-radius:12px; overflow:hidden; background:#000; aspect-ratio:16/9 }
.video-embed iframe{ position:absolute; inset:0; width:100%; height:100%; border:0 }

/* Comparativa en dos columnas dentro de la tarjeta */
.compare-split{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));
  gap:14px;
  align-items:start;
}
.compare-split .pane{background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent); border:1px solid var(--line); border-radius:12px; padding:12px}
.compare-split .pane h4{margin:6px 0 8px}
.compare-split .pane ul{margin:8px 0 0 16px}
.img-slot{
  width:100%;
  aspect-ratio:16/9;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(0,0,0,.12);
  display:flex; align-items:center; justify-content:center;
  color:var(--muted); font-size:12px;
  overflow:hidden; /* recorta esquinas de la imagen */
  position:relative;
  box-shadow:0 6px 16px rgba(0,0,0,.25);
  transition: box-shadow .2s ease;
}
.img-slot img{
  width:100%; height:100%; object-fit:cover; display:block;
  border-radius:inherit; opacity:.88; transition:opacity .2s ease;
  border:none; box-shadow:none;
}
.img-slot:hover img{ opacity:1; }

/* Card que ocupa toda la fila en grilla de tarjetas */
.cards .full-row{ grid-column: 1 / -1; }

/* Reordenar tarjetas de SSD */
/* Ocultar duplicado inferior de comparativa y la tarjeta superior de "ruta vs autopista" */
/* Mostrar la tarjeta inferior de "ruta vs autopista" y colocarla antes de Gráficos */
/* Colocar la tarjeta de Gráficos después usando :has() para detectar el canvas */

/* Comparativa */
.equipos-table td:first-child { font-weight:700; width: 22%; white-space: nowrap; }

/* FAQ */
.faq{background:var(--card); border:1px solid var(--line); border-radius:12px; padding:12px; margin-bottom:10px}
.faq summary{cursor:pointer; font-weight:700}

/* Footer staff */
.footer-staff{margin:40px 0 60px 0}
.footer-staff h4{margin:20px 0 20px 0; font-size:16px; text-align:center}
.staff-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap:8px 16px;
  justify-items:center;
  color:var(--muted);
}
.staff-grid span{font-weight:600}

/* Footer */
.site-footer{padding:40px 0 5px 0; border-top:1px solid var(--line); margin-top:40px}
.site-footer p{color:var(--muted); text-align:center; display:flex; align-items:center; justify-content:center; gap:4px; position:relative}
/* Trust/Sectigo badge inline con el texto del footer */
#comodoTL{
  position:absolute; left:0; top:50%; transform:translateY(-50%);
  display:inline-flex; align-items:center; gap:4px;
  text-decoration:none; color:inherit;
}
#comodoTL img{ height:18px; width:auto; display:block; }

/* Footer inline badge (preferred) */
.footer-badge{ display:inline-flex; align-items:center; gap:4px; margin-left:0; vertical-align:middle; }
.footer-badge img{ height:18px; width:auto; display:block; }

/* Fondo animado de líneas */
#bgLines{
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0; /* por debajo del header fijo */
  pointer-events: none;
  opacity: .16;
}

/* Contenido sobre el canvas (excluye header para no romper su fixed) */
.section, .site-footer{
  position: relative;
  z-index: 1;
}

/* Imágenes responsivas dentro de tarjetas */
.card img{max-width:100%; height:auto; display:block; border-radius:12px; opacity:.92; border:none; box-shadow:none; transition:opacity .2s ease}
/* Limitar hover a la sección Comparativa General */
#almacenamiento-ssd article.card:hover .compare-split img{ opacity:1; }

/* Refuerzo visual: aumentar sombra del contenedor al hover en la tarjeta */
#almacenamiento-ssd article.card:hover .img-slot{ box-shadow:0 10px 24px rgba(0,0,0,.32); }

/* Aplicar mismo efecto a "La ruta vs la autopista" */
#card-ruta-autopista-bottom{ transition: box-shadow .2s ease; }
#card-ruta-autopista-bottom:hover{ box-shadow:0 12px 28px rgba(0,0,0,.32); }
#card-ruta-autopista-bottom:hover img{ opacity:1; }

/* Efecto equivalente para el card de Gráficos */
#card-graficos{ transition: box-shadow .2s ease; }
#card-graficos:hover{ box-shadow:0 12px 28px rgba(0,0,0,.32); }

/* Animación de títulos en hover para tarjetas clave */
#card-comparativa:hover h3,
#card-ruta-autopista-bottom:hover h3,
#card-graficos:hover h3{
  color: var(--acc1);
  transform: translateY(-2px);
}
#card-comparativa:hover h3::after,
#card-ruta-autopista-bottom:hover h3::after,
#card-graficos:hover h3::after{
  transform:scaleX(1);
}

/* Ajuste de imágenes en la nueva sección de CPU/GPU */
#corazon-ia .canvas{padding:0; display:flex; align-items:center; justify-content:center}
#corazon-ia .canvas img{width:100%; height:100%; object-fit:contain}

@media (max-width: 640px){
  /* Reducir alto visual de espacios de imagen en móviles */
  #corazon-ia .canvas[style*="height:180px"]{height:150px !important}
  #corazon-ia .canvas[style*="height:120px"]{height:100px !important}
}


/* Responsive */
@media (max-width: 880px){
  .hero-inner{grid-template-columns:1fr}
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;
    position:absolute;
    top:100%; left:0; right:0;
    background:rgba(10,12,18,0.98);
    flex-direction:column;
    gap:0;
    border-bottom:1px solid var(--line);
  }
  .nav-links a{padding:14px 16px; border-top:1px solid var(--line)}
  .nav-links.open{display:flex}
}

.card:hover h3{ color: var(--acc1); transform: translateY(-2px); }
.card:hover h3::after{ transform: scaleX(1); }

/* Section separators (gradient line + glow dot) */
.section{ position: relative; }
.section:not(:first-of-type)::before{
  content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:min(1100px,92vw); height:1px;
  background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--acc1) 60%, transparent), color-mix(in oklab, var(--acc2) 60%, transparent), transparent);
  opacity:.8;
}
.section:not(:first-of-type)::after{
  content:""; position:absolute; top:-3px; left:50%; transform:translateX(-50%);
  width:10px; height:10px; border-radius:999px;
  background:radial-gradient(circle at 50% 50%, var(--acc2) 0 50%, transparent 55%);
  box-shadow:0 0 18px color-mix(in oklab, var(--acc2) 55%, transparent);
  opacity:.9;
}

/* Optional manual divider */
hr.divider{
  border:0; height:1px; width:min(1100px,92vw); margin:32px auto; display:block;
  background:linear-gradient(90deg, transparent, var(--line), transparent);
}

/* Loader overlay */
.loader-overlay{
  position: fixed; inset: 0; z-index: 10000;
  display:flex; align-items:center; justify-content:center;
  background: #0f1115; /* sólido para evitar flicker */
  transition: opacity .3s ease, visibility .3s ease;
}
.loader-overlay.hidden{ opacity:0; visibility:hidden; pointer-events:none; }
.loader-box{
  display:flex; align-items:center; gap:12px;
  padding:12px 16px; border:1px solid var(--line); border-radius:12px;
  background:linear-gradient(180deg, var(--card), var(--card2));
  box-shadow:0 10px 28px rgba(0,0,0,.35);
  color:var(--fg); font-weight:700;
}
.spinner{
  width:18px; height:18px; border-radius:999px;
  border:2px solid rgba(255,255,255,.25);
  border-top-color: var(--acc2);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Carrusel genérico dentro de tarjetas */
.carousel{ position:relative; width:100%; margin-top:8px; }
.carousel-viewport{ overflow:hidden; width:100%; border:1px solid var(--line); border-radius:12px; background:#000; aspect-ratio:16/9; box-shadow:0 8px 20px rgba(0,0,0,.28); }
.carousel-track{ display:flex; width:100%; height:100%; transition: transform .35s ease; }
.carousel-slide{ min-width:100%; height:100%; display:flex; align-items:center; justify-content:center; background:#000; }
.carousel-slide img{ width:100%; height:100%; object-fit:contain; display:block; }
.carousel-btn{ position:absolute; top:50%; transform:translateY(-50%); z-index:2; width:40px; height:40px; border-radius:999px; border:1px solid var(--line); background:rgba(10,12,18,.55); color:var(--fg); display:flex; align-items:center; justify-content:center; cursor:pointer; backdrop-filter: blur(4px); }
.carousel-btn:hover{ background:rgba(10,12,18,.75); }
.carousel-btn.prev{ left:8px; }
.carousel-btn.next{ right:8px; }
.carousel-dots{ position:absolute; left:50%; bottom:8px; transform:translateX(-50%); display:flex; gap:6px; z-index:2; }
.carousel-dots button{ width:8px; height:8px; border-radius:999px; border:0; background:rgba(255,255,255,.35); cursor:pointer; padding:0; }
.carousel-dots button[aria-current="true"]{ background:var(--acc2); }

/* Pie/caption sutil */
.caption{ color:var(--muted); font-size:12px; margin:8px 2px 0; }
.caption a{ color:var(--muted); text-decoration:underline; }

/* Fuente / bibliografía links, estilo unificado */
.source-link{
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in oklab, var(--acc2) 55%, transparent);
}
.source-link:hover{
  color: var(--fg);
  border-bottom-style: solid;
}