.su-offline-banner {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translate(-50%, 110%);
  width: min(400px, calc(100% - 2rem));
  box-sizing: border-box;
  padding: 1rem 1.25rem;
  background-image: linear-gradient(to bottom right, #2d3c96, #d53392);
  border: 2px solid transparent;
  color: var(--color-accent, #ffd700);
  text-align: center;
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease;
  z-index: 2000;
  animation: suOfflineBorderPulse 6s linear infinite;
}

.su-offline-banner.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.su-offline-banner__icon {
  display: block;
  width: 48px;
  height: 48px;
  margin: 0 auto 0.35rem;
  color: var(--color-accent, #ffd700);
  animation: suOfflineColorPulse 6s linear infinite;
}

.su-offline-banner__title {
  margin: 0 0 0.25rem 0;
  font-weight: 700;
  font-size: 1.05rem;
}

.su-offline-banner__message {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.4;
}

@keyframes suOfflineBorderPulse {
  0%,
  33.333% {
    border-color: var(--color-accent, #ffd700);
  }
  41.666%,
  58.333% {
    border-color: transparent;
  }
  66.666%,
  100% {
    border-color: var(--color-accent, #ffd700);
  }
}

@keyframes suOfflineColorPulse {
  0%,
  33.333% {
    color: var(--color-accent, #ffd700);
  }
  41.666%,
  58.333% {
    color: rgba(255, 215, 0, 0);
  }
  66.666%,
  100% {
    color: var(--color-accent, #ffd700);
  }
}