:root {
  --bg: #f9fafb;
  --text: #1f2933;
  --muted: #6b7280;
  --accent: #22c55e;
  --card: #ffffff;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

.site-banner {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  font-family: "JetBrains Mono", "Fira Code", monospace;
}

.prompt-line {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.prompt-user {
  color: var(--accent);
}

.prompt-path {
  color: var(--muted);
}

.prompt-char {
  color: var(--text);
}

.prompt-cursor {
  width: 0.6ch;
  height: 1.2em;
  background: var(--accent);
  margin-left: 0.15rem;
  animation: blink 1.2s steps(1) infinite;
}

.prompt-command {
  margin-left: 0.6rem;
  color: var(--muted);
  font-family: "JetBrains Mono", "Fira Code", monospace;
}

.site-tagline {
  margin-top: 0.6rem;
  font-family: system-ui, sans-serif;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Cursor blink */
@keyframes blink {
  50% {
    opacity: 0;
  }
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Dark mode overrides */
body.dark {
  --bg: #0f172a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22c55e;
  --card: #020617;
  --border: #1e293b;
}

button {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: var(--card);
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  margin-bottom: 3rem;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a[aria-current="page"] {
  border-bottom: 2px solid var(--accent);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--text);
  padding: 0.25rem;
}

.theme-toggle .icon-sun {
  display: inline;
}

.theme-toggle .icon-moon {
  display: none;
}

/* When dark mode is active */
body.dark .theme-toggle .icon-sun {
  display: none;
}

body.dark .theme-toggle .icon-moon {
  display: inline;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

h2 {
  margin-top: 2.5rem;
  font-size: 1.5rem;
}

p, ul {
  max-width: 70ch;
}

ul {
  padding-left: 1.2rem;
}

.section-note {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  display: block;
  color: inherit;
}

.card:hover {
  border-color: var(--accent);
}

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}