/* ==================== VARIABLES HEADER ==================== */
:root {
  --header-border: rgba(114, 214, 255, 0.2);
  --header-accent: #72d6ff;
  --header-accent-purple: #ff7fff;
  --header-height: 70px;
  --header-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --header-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* ==================== HEADER PRINCIPAL ==================== */
.site-header {
  position: relative;
  z-index: 2;
  overflow: hidden;
  text-align: center;

}

header {
  background: rgba(10, 10, 30, 0.95);
  z-index: 90;
  border-bottom: 1px solid rgba(114, 214, 255, 0.2);
}





/* Línea brillante superior */
.site-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    var(--header-accent) 20%,
    var(--header-accent-purple) 50%,
    var(--header-accent) 80%,
    transparent
  );
  box-shadow: 0 0 18px rgba(114, 214, 255, 0.5);
  animation: headerGlow 6s ease-in-out infinite;
  z-index: 10;
}









/* ==================== NAVEGACIÓN DESKTOP ==================== */
.site-header nav {
  gap: 12px;
  z-index: 5;
}

.site-header nav a {
  padding: 10px 14px;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 8px;
  transition: var(--header-transition);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--header-accent);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.site-header nav a svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
  transition: transform var(--header-transition);
}

/* Shimmer al hover */
.site-header nav a::before {
  content: '';
  position: absolute;
  width: 100%; height: 100%;
  transition: left 0.5s ease;
}

.site-header nav a:active {
  transform: scale(0.95);
  color: var(--header-accent-purple);
}

.site-header nav a.nav-highlight {
  background: linear-gradient(135deg, rgba(114,214,255,0.2), rgba(255,127,255,0.2));
  border-color: var(--header-accent);
  font-weight: 700;
}








/* ==================== HOVER (solo desktop) ==================== */

  .site-header nav a:hover::before {
    left: 100%;
  }

  .site-header nav a:hover,
  .site-header nav a:focus {
    color: var(--header-accent-purple);
  }





/* ====================== MOBILE ============================= */