:root {
  --bg: #000;
  --fg: #fff;
  --dim: #888;
  --border: #222;
  --accent: #fff;
}

[data-theme="light"] {
  --bg: #fff;
  --fg: #000;
  --dim: #666;
  --border: #eee;
  --accent: #000;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.8;
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 2rem;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

header {
  margin-bottom: 5rem;
}

h1 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h2, h3, h4 {
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

nav {
  display: flex;
  gap: 2rem;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

nav a {
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Dropdown styling */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--bg);
  min-width: 160px;
  z-index: 1000;
  border: 1px solid var(--border);
  padding: 0.5rem 0;
  left: 0;
  top: 100%;
}

/* Invisible bridge to prevent menu from closing when moving mouse from trigger to content */
.dropdown-content::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 0;
  width: 100%;
  height: 1rem;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--dim);
  text-decoration: none;
  font-size: 0.85rem;
}

.dropdown-content a:hover {
  color: var(--fg);
  background-color: var(--border);
}

.dropdown-trigger {
  cursor: default;
  color: var(--dim);
  padding-bottom: 0.5rem;
}

.dropdown:hover .dropdown-trigger {
  color: var(--fg);
}

a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

footer {
  margin-top: 8rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  margin-bottom: 1.2rem;
}

.post-date {
  color: var(--dim);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.8rem;
  margin-right: 1.5rem;
  display: inline-block;
  width: 100px;
}

.reading-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.repo-meta {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.status-badge {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-read {
  background-color: rgba(0, 255, 0, 0.1);
  color: #4caf50;
  border: 1px solid rgba(0, 255, 0, 0.2);
}

.status-purchased {
  background-color: rgba(0, 0, 255, 0.1);
  color: #2196f3;
  border: 1px solid rgba(0, 0, 255, 0.2);
}

.status-unpurchased {
  background-color: rgba(255, 255, 0, 0.1);
  color: #ffc107;
  border: 1px solid rgba(255, 255, 0, 0.2);
}

pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.9rem;
  background: #111;
  border-radius: 4px;
}

[data-theme="light"] pre, [data-theme="light"] code {
  background: #f5f5f5;
}

pre {
  padding: 1.5rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  margin: 2rem 0;
}

code {
  padding: 0.2rem 0.4rem;
}

pre code {
  padding: 0;
  background: none;
  border: none;
}

article {
  margin-bottom: 4rem;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

blockquote {
  margin: 2rem 0;
  padding-left: 1.5rem;
  border-left: 2px solid var(--fg);
  font-style: italic;
  color: var(--dim);
}

/* Slider styling */
.theme-switch {
  display: inline-block;
  height: 18px;
  position: relative;
  width: 34px;
}

.theme-switch input {
  display: none;
}

.slider {
  background-color: var(--bg);
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: .4s;
  border: 1px solid var(--fg);
}

.slider:before {
  background-color: var(--fg);
  bottom: 3px;
  content: "";
  height: 10px;
  left: 3px;
  position: absolute;
  transition: .4s;
  width: 100%;
  max-width: 10px;
}

input:checked + .slider:before {
  transform: translateX(16px);
}

.slider.round {
  border-radius: 20px;
}

.slider.round:before {
  border-radius: 50%;
}