/* Readable terminal-inspired theme
   - Sans body, mono for code
   - Higher contrast + larger type
   - Comfortable line length
   - No hidden mobile nav
*/

/* ---------- Tokens ---------- */
:root {
  --bg: #0b0d10;
  --panel: #121417;
  --text: #eef2f7;
  --muted: #b8c2cf;
  --accent: #7dd3fc;
  --border: #2a2f37;

  --font-sans:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  --base: 18px; /* bigger base size */
  --lh: 1.65; /* relaxed reading */
  --content: 78ch; /* line length */
  --radius: 12px;
}

/* ---------- Base ---------- */
* {
  box-sizing: border-box;
}
html {
  font-size: var(--base);
}
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-sans);
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 1.25rem;
}
header.container {
  max-width: 1040px;
}
main.container {
  max-width: var(--content);
} /* tighter line length for body */

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

/* ---------- Header / Nav ---------- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 16, 0.82); /* readable blur-free backdrop */
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(120%) blur(6px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 700;
}
.prompt {
  color: var(--accent);
}
.logo {
  text-transform: lowercase;
  letter-spacing: 0.3px;
}
.cursor {
  width: 8px;
  height: 16px;
  background: var(--accent);
  display: inline-block;
  margin-left: 2px;
  animation: blink 1.2s steps(2, start) infinite;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}
nav a {
  color: var(--muted);
  padding: 0.25rem 0.4rem;
  border-radius: 0.5rem;
}
nav a:hover {
  color: var(--text);
  background: rgba(125, 211, 252, 0.08);
}
nav a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Sections ---------- */
.hero {
  padding: 2.2rem 0 0.8rem;
}
.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1.25;
}
.tagline {
  color: var(--muted);
}

.cta {
  margin-top: 1rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.btn {
  background: var(--accent);
  color: #0b0f12;
  padding: 0.6rem 0.95rem;
  border-radius: 10px;
  font-weight: 700;
  border: 1px solid transparent;
}
.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.block {
  padding: 1.9rem 0 0.9rem;
  border-top: 1px dashed var(--border);
  margin-top: 1.6rem;
}
.block h2 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
  letter-spacing: 0.2px;
}

.pull {
  margin: 0.75rem 0;
  padding: 0.9rem 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.pull .attr {
  display: block;
  color: var(--muted);
  margin-top: 0.35rem;
  font-size: 0.95rem;
}

/* ---------- Cards / Terminal ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  margin: 0.7rem 0;
}

.terminal {
  font-family: var(--font-mono);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  overflow: auto;
  margin-top: 1rem;
}
.terminal.small {
  font-size: 0.95rem;
}

/* ---------- Lists ---------- */
.list {
  padding-left: 1.15rem;
}
.list li {
  margin: 0.35rem 0;
}

/* ---------- Demo ---------- */
.demo {
  margin: 0.6rem 0 0;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 0.5rem;
  border-radius: var(--radius);
}
.note {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  color: var(--muted);
}
.footer a {
  color: var(--muted);
}
.footer a:hover {
  color: var(--text);
}
.dot {
  margin: 0 0.35rem;
}

/* ---------- Accessibility & Prefs ---------- */
@keyframes blink {
  50% {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
}

/* Optional light mode for readability in bright environments */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7fafc;
    --panel: #ffffff;
    --text: #0e131a;
    --muted: #4b5563;
    --accent: #0ea5e9;
    --border: #e5e7eb;
  }
  header {
    background: rgba(255, 255, 255, 0.9);
  }
  .btn.ghost {
    color: var(--text);
  }
}