body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow-x: hidden;
}

.bg-image {
  position: fixed;
  inset: 0;
  z-index: -4;
  background: url("../img/bg.png") center/cover no-repeat;
  background-color: #000; /* fallback */
}

.ambient-layer {
  position: fixed;
  inset: -10%;
  z-index: -3;
  pointer-events: none;
  background:
    radial-gradient(42% 38% at 18% 22%, rgba(56,189,248,0.28), transparent 72%),
    radial-gradient(36% 32% at 82% 20%, rgba(37,99,235,0.22), transparent 72%),
    radial-gradient(44% 40% at 55% 78%, rgba(14,165,233,0.25), transparent 74%);
  mix-blend-mode: screen;
  filter: blur(10px) saturate(115%);
  opacity: 0.82;
  animation: ambient-drift 20s ease-in-out infinite alternate, ambient-pulse 10s ease-in-out infinite;
}

.grain-layer {
  position: fixed;
  inset: -25%;
  z-index: -2;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(255,255,255,0.08) 0.6px, transparent 0.7px),
    radial-gradient(rgba(255,255,255,0.04) 0.6px, transparent 0.7px);
  background-size: 3px 3px, 5px 5px;
  background-position: 0 0, 1px 1px;
  mix-blend-mode: soft-light;
  opacity: 0.2;
  animation: grain-shift 0.9s steps(8) infinite;
}

.gradient-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at center, rgba(0,0,0,0.4), rgba(0,0,0,0.9));
  transition: background 0.2s;
}

@keyframes ambient-drift {
  0% {
    transform: translate3d(-1.5%, 1%, 0) scale(1);
  }
  100% {
    transform: translate3d(1.5%, -1%, 0) scale(1.04);
  }
}

@keyframes ambient-pulse {
  0%,
  100% {
    opacity: 0.72;
  }
  50% {
    opacity: 0.9;
  }
}

@keyframes grain-shift {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(-2%, 2%);
  }
}

/* Estilos para o switcher de idioma */
.lang-link {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  margin: 0 5px;
  font-weight: bold;
}
.lang-link:hover {
  color: rgba(255,255,255,1);
}
.lang-link:focus-visible {
  outline: 2px solid rgba(255,255,255,0.85);
  outline-offset: 2px;
}
.lang-active {
  color: rgba(255,255,255,1);
  text-decoration: underline;
}
.lang-sep {
  color: rgba(255,255,255,0.5);
}

/* Hover para badges dos apps */
.app-badge {
  transition: transform 0.2s ease;
}
.app-badge:hover {
  transform: scale(1.04);
}

.app-more-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  width: 100%;
  margin-top: 1rem;
  padding: 0.72rem 0.95rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(255,255,255,0.22);
  background: linear-gradient(135deg, rgba(59,130,246,0.88), rgba(37,99,235,0.88));
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 24px rgba(15,23,42,0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.app-more-btn::after {
  content: "\2192";
  display: inline-block;
  transition: transform 0.2s ease;
}

.app-more-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(15,23,42,0.45);
  background: linear-gradient(135deg, rgba(37,99,235,0.95), rgba(29,78,216,0.95));
}

.app-more-btn:hover::after {
  transform: translateX(5px);
}

.app-more-btn:focus-visible {
  outline: 2px solid rgba(255,255,255,0.9);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .ambient-layer,
  .grain-layer,
  .gradient-overlay,
  .app-badge,
  .app-more-btn,
  .app-more-btn::after {
    transition: none;
    animation: none;
  }

  .app-badge:hover {
    transform: none;
  }

  .app-more-btn:hover {
    transform: none;
  }

  .app-more-btn:hover::after {
    transform: none;
  }
}