.summer-header-fixed {
  /* position: fixed; */
  top: 0;
  left: 0;
  width: 100%;
  z-index: 99999;
  background: linear-gradient(135deg, #f9fcff 0%, #eaf4ff 25%, #fff8ec 50%, #eaf4ff 75%, #f9fcff 100%);
  background-size: 200% 200%;
  animation: summer-shimmer 10s ease-in-out infinite;
  border-bottom: 1px solid #d9e8ff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.summer-header-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 15px;
  text-decoration: none;
  flex-wrap: wrap;
}

.summer-header-icon {
  font-size: 22px;
  display: inline-block;
  animation: summer-spin 6s linear infinite;
  line-height: 1;
}

.summer-header-copy {
  color: #4f87d8;
  font-size: 12px;
  font-weight: 500;
}

.summer-header-main {
  color: #2f7ee8;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  animation: summer-glow 2.4s ease-in-out infinite;
}

.summer-header-sub {
  color: #fff;
  background: linear-gradient(90deg, #ff8a3d, #ff6b6b);
  font-size: 14px;
  font-weight: 700;
  padding: 5px 15px;
  border-radius: 999px;
  line-height: 1;
  letter-spacing: 0.1em;
}

.summer-header-date {
  color: #5a78a8;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.summer-header-countdown {
  display: inline-flex;
  gap: 6px;
  background: #2f7ee8;
  border-radius: 999px;
  padding: 5px 15px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.1em;
  /* flex-direction: row; */
  /* flex-wrap: wrap; */
  /* align-content: stretch; */
  /* justify-content: space-evenly; */
  align-items: baseline;
}

.countdown-label {
  line-height: 1;
}

.countdown-time {
  font-family: "Courier New", monospace;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.05em;
}

@keyframes summer-shimmer {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes summer-glow {
  0%,
  100% {
    text-shadow: 0 0 4px rgba(47, 126, 232, 0.25);
  }
  50% {
    text-shadow:
      0 0 14px rgba(47, 126, 232, 0.6),
      0 0 22px rgba(255, 180, 80, 0.45);
  }
}

@keyframes summer-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 767px) {
  .summer-header-link {
    gap: 6px;
    padding: 8px 10px;
  }

  .summer-header-icon {
    font-size: 18px;
  }

  .summer-header-copy {
    width: 100%;
    text-align: center;
    font-size: 11px;
  }

  .summer-header-main {
    font-size: 20px;
  }

  .summer-header-sub {
    font-size: 11px;
  }

  .summer-header-date {
    width: 100%;
    text-align: center;
    font-size: 11px;
  }

  .summer-header-countdown {
    font-size: 11px;
    padding: 3px 12px;
  }

  .countdown-time {
    font-size: 13px;
  }
}