:root {
  --gray-1: #0f2a3a;
  --gray-2: #0c1f2e;
  --gray-2_5: #0a1622;
  --gray-3: #0a1926;
  --gray-4: #041014;
  --gray-5: #050b12;
  --gray-6: #02070d;
  --white-1: #e9fff5;
  --white-2: #b8d7ff;
  --accent-green: #3bf7a6;
  --accent-blue: #58c4ff;
  --accent-cyan: #2bf1d3;
  --glow-strong: 0 0 35px rgba(43, 241, 211, 0.18);
  --panel-glass: rgba(12, 27, 41, 0.82);
  --border-strong: rgba(88, 196, 255, 0.25);
  --snow-bright: rgba(255, 255, 255, 0.85);
  --snow-dim: rgba(233, 255, 245, 0.55);
  --snow-faint: rgba(233, 255, 245, 0.35);
}

@media (prefers-color-scheme: light) {
  :root {
    --gray-1: #dbeaf5;
    --gray-2: #c8deee;
    --gray-2_5: #bed6e8;
    --gray-3: #b7d3e8;
    --gray-4: #0f2535;
    --gray-5: #e6f3fb;
    --gray-6: #f2f9ff;
    --white-1: #0d1a26;
    --white-2: #16324a;
    --accent-green: #0bcf99;
    --accent-blue: #1fa0f2;
    --accent-cyan: #0bbf92;
    --glow-strong: 0 0 25px rgba(31, 160, 242, 0.2);
    --panel-glass: rgba(255, 255, 255, 0.82);
    --border-strong: rgba(31, 160, 242, 0.2);
    --snow-bright: rgba(15, 37, 53, 0.55);
    --snow-dim: rgba(15, 37, 53, 0.35);
    --snow-faint: rgba(15, 37, 53, 0.2);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --gray-1: #0f2a3a;
    --gray-2: #0c1f2e;
    --gray-2_5: #0a1622;
    --gray-3: #0a1926;
    --gray-4: #041014;
    --gray-5: #050b12;
    --gray-6: #02070d;
    --white-1: #e9fff5;
    --white-2: #b8d7ff;
    --accent-green: #3bf7a6;
    --accent-blue: #58c4ff;
    --accent-cyan: #2bf1d3;
    --glow-strong: 0 0 35px rgba(43, 241, 211, 0.18);
    --panel-glass: rgba(12, 27, 41, 0.82);
    --border-strong: rgba(88, 196, 255, 0.25);
  }
}

[data-theme="light"] {
  --gray-1: #dbeaf5;
  --gray-2: #c8deee;
  --gray-2_5: #bed6e8;
  --gray-3: #b7d3e8;
  --gray-4: #0f2535;
  --gray-5: #e6f3fb;
  --gray-6: #f2f9ff;
  --white-1: #0d1a26;
  --white-2: #16324a;
  --accent-green: #0bcf99;
  --accent-blue: #1fa0f2;
  --accent-cyan: #0bbf92;
  --glow-strong: 0 0 25px rgba(31, 160, 242, 0.2);
  --panel-glass: rgba(255, 255, 255, 0.82);
  --border-strong: rgba(31, 160, 242, 0.2);
  --snow-bright: rgba(15, 37, 53, 0.55);
  --snow-dim: rgba(15, 37, 53, 0.35);
  --snow-faint: rgba(15, 37, 53, 0.2);
}

[data-theme="dark"] {
  --gray-1: #0f2a3a;
  --gray-2: #0c1f2e;
  --gray-2_5: #0a1622;
  --gray-3: #0a1926;
  --gray-4: #041014;
  --gray-5: #050b12;
  --gray-6: #02070d;
  --white-1: #e9fff5;
  --white-2: #b8d7ff;
  --accent-green: #3bf7a6;
  --accent-blue: #58c4ff;
  --accent-cyan: #2bf1d3;
  --glow-strong: 0 0 35px rgba(43, 241, 211, 0.18);
  --panel-glass: rgba(12, 27, 41, 0.82);
  --border-strong: rgba(88, 196, 255, 0.25);
  --snow-bright: rgba(255, 255, 255, 0.85);
  --snow-dim: rgba(233, 255, 245, 0.55);
  --snow-faint: rgba(233, 255, 245, 0.35);
}

#category-modal-bg {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  z-index: 10;
  display: none;
  visibility: hidden;
}

#category-modal {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  max-width: 850px;
  max-height: 60vh;
  border-radius: 1rem;
  padding: 1rem;
  margin: auto;
  background: linear-gradient(145deg, var(--gray-3), var(--gray-5)),
    var(--panel-glass);
  border: 1px solid var(--border-strong);
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.55), var(--glow-strong);
  display: none;
  visibility: hidden;
  line-height: 140%;
  overflow: hidden;
}

#category-modal-content {
  position: relative;
  max-height: calc(100% - 5rem);
  overflow: auto;
  padding-right: 0.25rem;
}

#category-modal-title {
  margin-bottom: 1rem;
  font-size: 2rem;
  padding: 1rem;
  color: var(--white-1);
  letter-spacing: 0.04em;
}

#category-modal-bg.open,
#category-modal.open {
  display: block;
  visibility: visible;
}

.modal-article,
.modal-article-date {
  display: block;
  color: var(--white-2);
}

.modal-article {
  margin-bottom: 0.5rem;
  padding: 0.5rem 1rem;
  transition: all 0.2s ease-in-out;
  border-radius: 0.75rem;
  border: 1px solid transparent;
  background: linear-gradient(
    120deg,
    rgba(59, 247, 166, 0.12),
    rgba(88, 196, 255, 0.12)
  );
}

.modal-article-date {
  font-size: 0.8rem;
}

.modal-article:hover {
  border-color: var(--border-strong);
  color: var(--white-1);
  box-shadow: var(--glow-strong);
}

hr {
  border-top: 1px dashed rgba(43, 241, 211, 0.6) !important;
  border-bottom: none !important;
  border-left: none !important;
  border-right: none !important;
  margin-bottom: 1.75rem !important;
}

/* Copy code button */
.copy-code-button {
  position: absolute;
  right: 0.25rem;
  bottom: 0.25rem;
  opacity: 0;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  line-height: normal;
  border: 1px solid var(--border-strong);
  border-radius: 0.25rem;
  cursor: pointer;
  background-color: rgba(88, 196, 255, 0.12);
  color: var(--white-1);
  transition: opacity 0.2s ease-in-out, background-color 0.2s ease-in-out,
    box-shadow 0.2s ease-in-out;
}

pre:hover .copy-code-button {
  opacity: 1;
}

.copy-code-button:hover {
  background-color: rgba(59, 247, 166, 0.2);
  box-shadow: var(--glow-strong);
}

.view-counter {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
}

.snowfall {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
  opacity: 0.9;
  background-image: radial-gradient(
      2px 2px at 18px 22px,
      var(--snow-bright) 0%,
      var(--snow-bright) 60%,
      transparent 72%
    ),
    radial-gradient(
      1px 1px at 64px 130px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    ),
    radial-gradient(
      3px 3px at 140px 40px,
      var(--snow-bright) 0%,
      var(--snow-bright) 60%,
      transparent 72%
    ),
    radial-gradient(
      1.5px 1.5px at 210px 180px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    ),
    radial-gradient(
      2.5px 2.5px at 90px 210px,
      var(--snow-dim) 0%,
      var(--snow-dim) 60%,
      transparent 72%
    ),
    radial-gradient(
      1px 1px at 34px 170px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    ),
    radial-gradient(
      2px 2px at 170px 90px,
      var(--snow-dim) 0%,
      var(--snow-dim) 60%,
      transparent 72%
    ),
    radial-gradient(
      1.5px 1.5px at 120px 240px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    );
  background-size: 260px 260px;
  animation: snowfall-mid 18s linear infinite;
}

.snowfall::before,
.snowfall::after {
  content: "";
  position: absolute;
  inset: -20vh 0 0 0;
  background-image: radial-gradient(
      3px 3px at 24px 36px,
      var(--snow-bright) 0%,
      var(--snow-bright) 60%,
      transparent 72%
    ),
    radial-gradient(
      2px 2px at 110px 80px,
      var(--snow-dim) 0%,
      var(--snow-dim) 60%,
      transparent 72%
    ),
    radial-gradient(
      1.5px 1.5px at 200px 60px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    ),
    radial-gradient(
      3.5px 3.5px at 160px 150px,
      var(--snow-bright) 0%,
      var(--snow-bright) 60%,
      transparent 72%
    ),
    radial-gradient(
      2px 2px at 60px 190px,
      var(--snow-dim) 0%,
      var(--snow-dim) 60%,
      transparent 72%
    ),
    radial-gradient(
      1px 1px at 240px 210px,
      var(--snow-faint) 0%,
      var(--snow-faint) 60%,
      transparent 72%
    );
  background-size: 320px 320px;
  animation: snowfall-slow 26s linear infinite;
  opacity: 0.75;
}

.snowfall::after {
  background-size: 180px 180px;
  animation: snowfall-fast 12s linear infinite;
  opacity: 0.6;
}

@keyframes snowfall-mid {
  0% {
    background-position: 0 -30vh, 0 -30vh, 0 -30vh, 0 -30vh, 0 -30vh,
      0 -30vh, 0 -30vh, 0 -30vh;
    transform: translateX(0);
  }
  50% {
    transform: translateX(10px);
  }
  100% {
    background-position: 35px 120vh, -10px 120vh, 20px 120vh, -25px 120vh,
      15px 120vh, -5px 120vh, 28px 120vh, -18px 120vh;
    transform: translateX(-6px);
  }
}

@keyframes snowfall-slow {
  0% {
    background-position: 0 -35vh, 0 -35vh, 0 -35vh, 0 -35vh, 0 -35vh, 0 -35vh;
    transform: translateX(-6px);
  }
  50% {
    transform: translateX(6px);
  }
  100% {
    background-position: -20px 125vh, 25px 125vh, -10px 125vh, 18px 125vh,
      -28px 125vh, 12px 125vh;
    transform: translateX(-2px);
  }
}

@keyframes snowfall-fast {
  0% {
    background-position: 0 -25vh, 0 -25vh, 0 -25vh, 0 -25vh, 0 -25vh, 0 -25vh;
    transform: translateX(0);
  }
  50% {
    transform: translateX(14px);
  }
  100% {
    background-position: 22px 115vh, -18px 115vh, 12px 115vh, -8px 115vh,
      16px 115vh, -12px 115vh;
    transform: translateX(-8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .snowfall,
  .snowfall::before,
  .snowfall::after {
    animation: none;
  }
}

.view-counter img {
  height: 22px;
  width: auto;
  image-rendering: pixelated;
  transform: translateY(1px);
}

[data-theme="light"] .copy-code-button {
  background-color: rgba(31, 160, 242, 0.12);
  color: var(--white-2);
}

[data-theme="light"] .copy-code-button:hover {
  background-color: rgba(11, 191, 146, 0.2);
}

@media (prefers-color-scheme: light) {
  .copy-code-button {
    background-color: rgba(31, 160, 242, 0.12);
    color: var(--white-2);
  }

  .copy-code-button:hover {
    background-color: rgba(11, 191, 146, 0.2);
  }
}