/* ─── Custom properties ─────────────────────────────────── */
:root {
  --bg:        #0a0c10;
  --surface:   #161b22;
  --surface-2: #21262d;
  --border:    #30363d;
  --text:      #e6edf3;
  --muted:     #8b949e;
  --accent:    #00c9a7;
  --green:     #3fb950;
  --yellow:    #d29922;
  --red:       #f85149;
  --blue:      #58a6ff;
  --cyan:      #79c0ff;

  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --radius:    8px;
  --radius-lg: 14px;
  --max-width: 1160px;
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--cyan);
}

/* ─── Accessibility ─────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--accent);
  color: #000;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 9999;
}
.skip-link:focus { top: 1rem; }

/* ─── Navigation ────────────────────────────────────────── */
.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
}
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-gh {
  color: var(--text) !important;
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.85rem !important;
  transition: border-color 0.15s, background 0.15s !important;
}
.nav-gh:hover {
  background: var(--surface);
  border-color: var(--accent);
}

/* ─── Hero ──────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0d1117 0%, var(--bg) 100%);
}
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 2rem 5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}
.accent { color: var(--accent); }
.hero-sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin-bottom: 2rem;
}
.install-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.install-cmd {
  font-family: var(--mono);
  font-size: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  user-select: all;
}
.copy-btn {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}
.copy-btn:hover { opacity: 0.88; }
.copy-btn:active { transform: scale(0.97); }
.copy-btn.copied { background: var(--green); }
.install-note {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ─── Hero terminal ─────────────────────────────────────── */
.hero-terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red    { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green  { background: #28c840; }
.term-title {
  margin-left: auto;
  margin-right: auto;
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
}
.term-body {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  padding: 1.25rem 1.25rem 1.5rem;
  overflow-x: auto;
  white-space: pre;
}

/* ─── Terminal color classes ────────────────────────────── */
.tp { color: var(--green); font-weight: 700; }  /* prompt $ */
.tt { color: var(--muted); }                     /* table borders/dim */
.tg { color: var(--green); }
.ty { color: var(--yellow); }
.tr { color: var(--red); }
.tb { color: var(--blue); }
.tc { color: var(--cyan); }
.td { color: var(--muted); }
.bold { font-weight: 700; }

/* ─── Sections ──────────────────────────────────────────── */
section { padding: 5rem 2rem; }
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 3rem;
}

/* ─── Feature grid ──────────────────────────────────────── */
.features { background: var(--surface); border-bottom: 1px solid var(--border); }
.feature-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent); }
.feature-icon {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-family: var(--mono);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.feature-tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  background: var(--surface-2);
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  border: 1px solid var(--border);
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}
.cmd-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.cmd-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.85rem;
}
.cmd-list li code {
  flex-shrink: 0;
  background: var(--surface-2);
  color: var(--cyan);
}
.cmd-list li span {
  color: var(--muted);
  font-size: 0.8rem;
}

/* ─── Usage section ─────────────────────────────────────── */
.usage { border-bottom: 1px solid var(--border); }
.usage-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.usage-block h3 {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 0.75rem;
  text-transform: lowercase;
}
.term-mini {
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.6;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  overflow-x: auto;
  white-space: pre;
  color: var(--text);
}

/* ─── Get started ───────────────────────────────────────── */
.get-started { background: var(--surface); border-bottom: 1px solid var(--border); }
.steps {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2rem;
}
.step-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  overflow-x: auto;
}
.code-block code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  color: var(--text);
  white-space: pre;
  display: block;
}
.step-note {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ─── Footer ────────────────────────────────────────────── */
.site-footer {
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
}
.sep { color: var(--border); }
.footer-inner a { color: var(--muted); }
.footer-inner a:hover { color: var(--text); }

/* ─── Live demo ─────────────────────────────────────────────── */
.live-demo { border-bottom: 1px solid var(--border); }
.demo-sub {
  text-align: center;
  color: var(--muted);
  font-size: 1rem;
  margin-top: -1.5rem;
  margin-bottom: 2.5rem;
}
.demo-wrap { max-width: 900px; margin: 0 auto; }
.demo-terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.term-output {
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  padding: 1.25rem 1.25rem 0.5rem;
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.term-line { display: block; min-height: 1.4em; }
.term-example {
  cursor: pointer;
  border-radius: 3px;
  padding: 1px 4px;
  margin-left: -4px;
  transition: background 0.1s;
}
.term-example:hover { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.term-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.term-prompt {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
  cursor: default;
}
.term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
  caret-color: var(--accent);
  min-width: 0;
}
.term-input::placeholder { color: var(--muted); opacity: 0.6; }
.term-input:disabled { opacity: 0.5; }
.term-run {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.8rem;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  flex-shrink: 0;
}
.term-run:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.term-link { color: inherit; text-decoration: none; }
.term-link:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.tm   { color: #d2a8ff; }  /* purple for ref counts */
.bold { font-weight: 700; }

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-sub { max-width: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .usage-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  section { padding: 3.5rem 1.25rem; }
  .nav { padding: 1rem 1.25rem; }
  .nav-links { gap: 1.25rem; }
  .hero { padding: 3.5rem 1.25rem; }
  .install-cta { flex-wrap: wrap; }
}