@font-face {
  font-family: 'GeistMono';
  src: url(/fonts/GeistMono/GeistMono[wght].ttf) format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'GeistMono';
  src: url(/fonts/GeistMono/GeistMono-Italic[wght].ttf) format('truetype');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --text: #18181b;
  --muted: #52525b;
  --faint: #a1a1aa;
  --border: #e4e4e7;
  --code-bg: #f4f4f5;
  --selection: #e4e4e7;
}

[data-theme="dark"] {
  --bg: #09090b;
  --text: #a1a1aa;
  --text-strong: #f4f4f5;
  --muted: #71717a;
  --faint: #3f3f46;
  --border: #18181b;
  --code-bg: #111113;
  --selection: #27272a;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #09090b;
    --text: #a1a1aa;
    --text-strong: #f4f4f5;
    --muted: #71717a;
    --faint: #3f3f46;
    --border: #18181b;
    --code-bg: #111113;
    --selection: #27272a;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

::selection {
  background: var(--selection);
}

html {
  font-family: 'GeistMono', monospace;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-size: 14px;
  line-height: 1.6;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--text-strong);
}

header {
  padding: 64px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 13px;
  font-weight: 500;
}

.site-title a {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo {
  width: 20px;
  height: 20px;
  display: block;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
}

nav a {
  text-decoration: none;
  color: var(--muted);
}

nav a:hover {
  color: var(--text-strong);
}

#theme-toggle {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  transition: color 0.15s;
}

#theme-toggle:hover {
  color: var(--text-strong);
}

main {
  padding-bottom: 96px;
}

.video-embed {
  margin: 24px auto;
  max-width: 720px;
}

.video-embed iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border: 0;
}

/* Landing video */
.hero-video {
  margin-bottom: 24px;
  animation: fadeIn 0.4s ease-out;
}

.hero-video-frame {
  position: relative;
  max-width: 320px;
  margin: 0 auto;
}

.hero-video-caption {
  margin: 8px auto 0;
  max-width: 320px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.hero-video video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--code-bg);
}

.hero-video-toggle {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-video-toggle:hover {
  color: var(--text-strong);
  border-color: var(--faint);
}

.hero-video-toggle .icon {
  display: inline-flex;
}

.hero-video-toggle svg {
  width: 16px;
  height: 16px;
  display: block;
}

.hero-video-toggle[data-muted="false"] .icon-off {
  display: none;
}

.hero-video-toggle[data-muted="true"] .icon-on {
  display: none;
}

/* Posts list */
.posts {
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.4s ease-out;
}

.post-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 24px 0;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  gap: 24px;
}

.post-item:last-child {
  border-bottom: none;
}

.post-item h2 {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-strong);
  line-height: 1.2;
}

.post-item time {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-item:hover h2 {
  color: var(--text);
}

/* Post Content */
.post {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post-header {
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.post-header h1 {
  font-size: 32px;
  font-weight: 500;
  color: var(--text-strong);
  letter-spacing: -0.04em;
  margin-bottom: 0;
  line-height: 1.1;
}

.post-meta {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.post-content {
  font-size: 14px;
  color: var(--text);
}

.post-content h2,
.post-content h3,
.post-content h4 {
  color: var(--text-strong);
  font-weight: 500;
  margin-top: 48px;
  margin-bottom: 16px;
}

.post-content h2 {
  font-size: 18px;
}

.post-content h3 {
  font-size: 16px;
}

.post-content p {
  margin-bottom: 24px;
}

.post-content strong {
  color: var(--text-strong);
  font-weight: 500;
}

.post-content blockquote {
  margin: 32px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--muted);
  background: var(--code-bg);
  color: var(--text);
  border-radius: 0;
  font-style: italic;
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content ul,
.post-content ol {
  margin-bottom: 24px;
  padding-left: 20px;
}

.post-content li {
  margin-bottom: 8px;
}

/* Code styling */
.post-content code {
  font-family: 'GeistMono', monospace;
  font-size: 13px;
}

.post-content :not(pre)>code {
  background: var(--code-bg);
  padding: 2px 4px;
  border-radius: 4px;
  color: var(--text-strong);
}

.post-content pre {
  background: var(--code-bg);
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 32px 0;
  border: 1px solid var(--border);
}

.post-footer {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.post-footer a {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.post-footer a:hover {
  color: var(--text-strong);
}

/* Tags */
.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.post-item-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.post-header .tags {
  justify-content: center;
  margin-top: 12px;
}

/* Tag Monochrome Variants */
.tag-v0 {
  color: var(--muted);
  background: var(--code-bg);
  border-color: var(--border);
}

.tag-v1 {
  color: var(--text-strong);
  background: var(--border);
  border-color: var(--faint);
}

.tag-v2 {
  color: var(--text-strong);
  background: var(--bg);
  border-color: var(--border);
}

.tag-v3 {
  color: var(--bg);
  background: var(--text-strong);
  border-color: var(--text-strong);
}

.tag-v4 {
  color: var(--muted);
  background: transparent;
  border-color: var(--border);
}

footer {
  padding: 48px 0 64px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}

footer a {
  text-decoration: none;
}

footer a:hover {
  color: var(--text-strong);
}

@media (max-width: 600px) {
  .container {
    padding: 0 20px;
  }

  header {
    padding: 40px 0 32px;
  }

  .post-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 24px 0;
  }

  .post-item h2 {
    font-size: 18px;
    line-height: 1.2;
    text-align: left;
  }

  .post-item time {
    order: -1;
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .post-header h1 {
    font-size: 24px;
  }
}