[data-theme="dark"] {
  --color-foreground-base: #ff7f36;

  --color-foreground-10: oklch(from var(--color-foreground-base) 90% c h);
  --color-foreground-20: oklch(from var(--color-foreground-base) 80% c h);
  --color-foreground-30: oklch(from var(--color-foreground-base) 70% c h);
  --color-foreground-40: oklch(from var(--color-foreground-base) 60% c h);
  --color-foreground-50: oklch(from var(--color-foreground-base) 50% c h);
  --color-foreground-90: oklch(from var(--color-foreground-base) 90% c h);

  --color-background-base: #141414;

  --color-background-10: oklch(from var(--color-background-base) 90% c h);
  --color-background-20: oklch(from var(--color-background-base) 80% c h);
  --color-background-30: oklch(from var(--color-background-base) 70% c h);
  --color-background-40: oklch(from var(--color-background-base) 60% c h);
  --color-background-50: oklch(from var(--color-background-base) 50% c h);
  --color-background-25: oklch(from var(--color-background-base) 25% c h);
      /* Colores base (puedes ajustar tonos aquí) */
      --bg-start: #050816;   /* azul muy oscuro casi negro */
      --bg-end:   #0a0f24;   /* azul profundo */
      --blue-1:   #1a6bff;
      --blue-2:   #0ad3ff;
      --blue-3:   #2d9cdb;
      --violet-1: #7a3cff;
      --violet-2: #a45cff;

      /* Intensidad/estética */
      --blur: 30px;             /* Desenfoque de cada blob */
      --blob-size: 58vmin;      /* Tamaño base de los blobs */
      --opacity: 0.5;           /* Opacidad de los blobs */

}
:root {
 /** --bulma-link-h: 35deg; /** Este valor modifica muchos inputs!...**/
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  margin: 0;
  font-family: 'Raleway', sans-serif;
  background: var(--color-background-25);
  color: var(--color-background-10);
}
body a {
        text-decoration: none;
    transition: 150ms;
}

.top-nav-title, .top-nav-links {
    display: inline-block;
}


.top-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
     display: flex;
  align-items: center;
  justify-content: space-between;
  flex-direction: row;
}
.top-nav, footer {
    background: var(--color-background-base);
    color: var(--color-background-10);
    padding: 15px;
}
footer {
    display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: row;
  text-align: center;
}
.top-nav a, footer a {
    color: var(--color-background-20);
}
.top-nav a:hover, footer a:hover {
    color: var(--color-foreground-10);
}
.top-nav-title a {
    color: var(--color-background-10);
}
.main {
    padding: 15px;
}
.container {
    width: 100%;
    max-width: 1100px;
    margin: auto;
}

.acrylic-effect {
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(20px) contrast(120%) saturate(150%);
  transition: all 300ms ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  border-bottom: 1px rgba(255,255,255,0.1) solid;
}
.htecno {
    max-width: 1000px; margin: auto;
    border:1px var(--color-background-10) solid;
    border-radius: 2em;
}

.htecno.fa-solid, .htecno.fa-brands {
    font-size: 3em; margin-bottom: 0.2em;
}

.hero {
      position: relative;
      min-height: 70vh; /* hero alto; ajusta según tu proyecto */
      display: grid;
      width: 100vw;
      height: 100vh; /* ahora ocupa el 100% del viewport */
      place-items: center;
      overflow: hidden;
      background: radial-gradient(1200px 800px at 50% 10%, #0e122b 0%, transparent 60%),
                  radial-gradient(900px 600px at 90% 30%, #0a0e24 0%, transparent 70%),
                  linear-gradient(180deg, var(--bg-start), var(--bg-end));
      color: #e6f1ff;
      isolation: isolate; /* para que los mix-blend funcionen bien */
      margin:-15px;
      margin-bottom: 20px;
      align-items: center;
  justify-content: center;
  flex-direction: row;
  text-align: center;
    }

    /* Contenido de ejemplo: coloca aquí tu H1, CTA, etc. */
    .hero__content {
      position: relative;
      z-index: 2;
      text-align: center;
      padding: 4rem 1rem;
      max-width: 70ch;
    }
    .hero__title { font: 800  clamp(2.2rem, 6vw, 4.2rem)/1.05 system-ui, -apple-system, Segoe UI, Roboto, Inter, sans-serif;
        color: white; text-shadow: 2px 1px 30px #000;
     }
    .hero__subtitle { font: 400 clamp(1rem, 2.2vw, 1.25rem)/1.4 Inter, system-ui, sans-serif; opacity: .85; margin-top: 0.9rem; }

    /* Lienzo de blobs */
    .blobs {
      position: absolute;
      inset: -10vmax;  /* permite que entren/salgan suave */
      filter: blur(var(--blur));
      pointer-events: none;
      z-index: 1;
    }

    .blob {
      position: absolute;
      width: var(--blob-size);
      aspect-ratio: 1 / 1;
      border-radius: 50%;
      opacity: var(--opacity);
      will-change: transform, opacity;
      mix-blend-mode: screen; /* ilumina sobre fondo oscuro */
      transform: translate3d(0,0,0) scale(1);
      animation: float var(--dur, 20s) var(--ease, cubic-bezier(.22,.61,.36,1)) infinite alternate,
                 drift calc(var(--dur, 20s) * 1.2) linear infinite;
      /* degradado radial para dar profundidad de color */
      background: radial-gradient(circle at 30% 30%, var(--c1) 0%, var(--c2) 40%, transparent 70%);
      box-shadow: 0 0 120px 40px color-mix(in oklab, var(--c2) 60%, transparent);
    }

    /* Animaciones */
    @keyframes float {
      0%   { transform: translate3d(var(--x0, 0), var(--y0, 0), 0) scale(var(--s0, 1)); }
      100% { transform: translate3d(var(--x1, 20%), var(--y1, -10%), 0) scale(var(--s1, 1.15)); }
    }
    @keyframes drift {
      0%   { filter: blur(var(--blur)); }
      50%  { filter: blur(calc(var(--blur) * 1.18)); }
      100% { filter: blur(var(--blur)); }
    }

    /* Bruma/sutil grano opcional para más textura */
    .mist { position:absolute; inset:-20%; z-index:0; opacity:.06; background: repeating-radial-gradient(circle at 50% 50%, #fff 0 1px, transparent 1px 4px); filter: blur(2px); mix-blend-mode: overlay; }

    /* Accesibilidad: reduce movimiento si el usuario lo pide */
    @media (prefers-reduced-motion: reduce) {
      .blob { animation: none; }
    }