:root {
  --christmas-red: #dc2626;
  --christmas-green: #16a34a;
  --christmas-gold: #fcc419;
  --banner-height: 48px;
}

.snow-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.1;
}

.snowflake {
  position: absolute;
  color: #ffffff;
  font-size: 1em;
  font-family: Arial, sans-serif;
  animation: snowfall linear infinite;
  will-change: transform;
}

@keyframes snowfall {
  0% {
    transform: translateY(-100vh) translateX(0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) translateX(20px) rotate(360deg);
    opacity: 0;
  }
}

.christmas-banner {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  width: 100%;
  height: var(--banner-height);
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 998;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.christmas-banner-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0 1.5rem;
  width: 100%;
  max-width: 1400px;
  height: 100%;
}

.christmas-banner-text {
  color: var(--current-text-color);
  font-weight: 500;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
}

.christmas-banner-code {
  color: var(--christmas-red);
  font-weight: 600;
  font-size: 0.875rem;
  background: rgba(220, 38, 38, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.christmas-countdown {
  display: inline-flex;
  align-items: center;
  gap: 0;
  color: var(--current-text-color);
  font-weight: 600;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, monospace;
  line-height: 1.4;
}

.christmas-countdown > span {
  color: var(--christmas-green);
  font-weight: 700;
  display: inline;
}

.christmas-countdown-separator {
  color: var(--current-text-color);
  opacity: 0.4;
  margin: 0 0.3rem;
  display: inline;
  vertical-align: middle;
}

body.christmas-theme header.header,
body.christmas-theme .header {
  top: 0 !important;
  position: fixed !important;
  z-index: 1000 !important;
}

body.christmas-theme .christmas-banner,
.christmas-banner {
  top: 60px !important;
  z-index: 998 !important;
  position: fixed !important;
}

body.christmas-theme .top-banner-space {
  margin-top: calc(var(--banner-height) + 60px) !important;
}

body.christmas-theme .section {
  padding-top: calc(2rem + var(--banner-height));
}

@media (max-width: 768px) {
  :root {
    --banner-height: 56px;
  }
  
  .christmas-banner-content {
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
  }
  
  .christmas-banner-text {
    font-size: 0.8rem;
  }
  
  .christmas-banner-code {
    font-size: 0.8rem;
    padding: 0.2rem 0.4rem;
  }
  
  .christmas-countdown {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .christmas-banner-text {
    font-size: 0.75rem;
  }
  
  .christmas-countdown {
    font-size: 0.7rem;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.3rem;
  }
}

.christmas-banner {
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}