:root {
  font-size: 16px;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  color-scheme: dark;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: #000;
  color: #f9f9f9;
  line-height: 1.7;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
  display: grid;
  gap: 3rem;
}

.site-header {
  padding: 2.5rem 0 2rem;
  display: flex;
  justify-content: center;
  overflow-x: hidden;
  width: 100%;
}

.view-toggle {
  display: inline-flex;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(10, 10, 10, 0.75);
}

.view-toggle__button {
  appearance: none;
  border: none;
  background: transparent;
  color: rgba(45, 45, 45, 0.85);
  font-family: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.9rem 1.75rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.view-toggle__button + .view-toggle__button {
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}

.view-toggle__button:hover,
.view-toggle__button:focus-visible {
  color: rgba(255, 255, 255, 0.8);
  background: rgba(25, 25, 25, 0.65);
  outline: none;
}

.view-toggle__button.is-active {
  background: rgba(255, 255, 255, 0.12);
  color: #f9f9f9;
}

.site-main {
  display: grid;
  gap: 3rem;
}

.post-group {
  display: none;
  gap: 1.5rem;
}

.post-group.is-active {
  display: grid;
}

.post-group__header {
  display: grid;
  gap: 0.4rem;
  text-align: center;
}

.post-group__title {
  margin: 0;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.post-group__subtitle {
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.08em;
}

.posts {
  display: grid;
  gap: 2rem;
}

.post {
  display: grid;
  gap: 1.5rem;
  padding: 2.25rem 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: transparent;
}

.post__header {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.post__title {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.35rem);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  text-align: center;
}

.post__date {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

.post__last-updated {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

.post__body {
  display: grid;
  gap: 1rem;
  color: rgba(255, 255, 255, 0.88);
}

.post__body p {
  margin: 0;
}

.post__body ul {
  margin: 0;
  padding-left: 1.4rem;
  display: grid;
  gap: 0.35rem;
}

.post__body li::marker {
  content: "– ";
  color: rgba(255, 255, 255, 0.65);
}

.post__body code {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 0.2rem;
  letter-spacing: 0.08em;
}

.post__body pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.3rem;
  overflow-x: auto;
}

.post__body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  letter-spacing: 0;
  white-space: pre;
  display: block;
  font-size: 0.85em;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
  font-family: "IBM Plex Mono", "Courier New", monospace;
}

.post__body h2,
.post__body h3 {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.post__body h1 {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
}

.post__body a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.post__body a:hover,
.post__body a:focus-visible {
  color: rgba(255, 255, 255, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.6);
  outline: none;
}

.post__body h2 a,
.post__body h3 a {
  color: inherit;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.post__body h2 a:hover,
.post__body h2 a:focus-visible,
.post__body h3 a:hover,
.post__body h3 a:focus-visible {
  color: rgba(255, 255, 255, 0.85);
  border-bottom-color: rgba(255, 255, 255, 0.5);
}

code {
  font-family: inherit;
  font-size: 0.95em;
}

.empty-state {
  margin: 0;
  padding: 2rem 1.5rem;
  border: 1px dashed rgba(255, 255, 255, 0.25);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

@media (max-width: 640px) {
  .page {
    max-width: 100%;
    padding: 2.5rem 1.15rem 4rem;
  }

  .site-header {
    padding: 2.25rem 0 1.75rem;
  }

  .view-toggle {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    width: 100%;
    gap: 0;
  }

  .view-toggle__button {
    padding: 0.7rem 0.5rem;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    white-space: nowrap;
    text-align: center;
  }

  .view-toggle__button + .view-toggle__button {
    border-left: 1px solid rgba(255, 255, 255, 0.18);
  }

  .post {
    padding: 2rem 1.5rem;
  }
}