/* ===== Blueinformatic — estilos personalizados ===== */

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem; /* compensa el header fijo al saltar a anclas */
}

body {
  -webkit-font-smoothing: antialiased;
}

/* Texto con degradado azul → cian */
.text-gradient {
  background: linear-gradient(90deg, #608cfa 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Patrón de cuadrícula tenue para fondos oscuros */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  pointer-events: none;
}

/* ===== Header: fondo blanco translúcido (el logo azul siempre legible) ===== */
#header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}
#header .nav-links a { color: #334155; }
#header .nav-toggle { color: #0A2540; }

/* ===== Sombra más marcada al hacer scroll ===== */
#header.scrolled {
  box-shadow: 0 4px 24px rgba(10, 37, 64, 0.08);
}

/* ===== Íconos de marcas (franja de tecnologías) ===== */
.brand-item {
  cursor: default;
  opacity: 0.85;
  transition: opacity 0.2s ease;
}
.brand-item:hover {
  opacity: 1;
}
.brand-item:hover span {
  color: #1D4ED8; /* brand-600 */
}

/* ===== Logo en blanco para fondos oscuros (footer) ===== */
.logo-white {
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

/* ===== Animación de aparición al hacer scroll ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Respeta a quienes prefieren menos movimiento */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}