/* ---------- Design tokens ---------- */
:root {
  --bg:        #0a0a0a;
  --bg-alt:    #111111;
  --surface:   #161616;
  --surface-2: #1c1c1c;
  --border:    #262626;
  --border-2:  #333333;
  --text:      #ededed;
  --text-mute: #a0a0a0;
  --text-dim:  #6b6b6b;
  --accent:    #f6821f;
  --accent-2:  #faae40;
  --accent-ink:#0a0a0a;
  --success:   #4ade80;
  --danger:    #f87171;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --max-w:   1100px;
  --gutter:  clamp(1rem, 4vw, 2rem);
  --radius:  10px;
  --radius-sm: 6px;
  --shadow:  0 1px 0 rgba(255,255,255,.04), 0 12px 32px -16px rgba(0,0,0,.6);

  --ease: cubic-bezier(.2, .8, .2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
/* UI links: no underline */
.btn, .nav .nav__links a, .brand, .site-footer__inner a { text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
ul, ol { padding-left: 0; list-style: none; margin: 0; }
p { margin: 0; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.25rem, 5vw + 1rem, 4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 2.5rem); letter-spacing: -0.02em; }
h3 { font-size: 1.125rem; }
code, pre {
  font-family: var(--font-mono);
  font-size: 0.95em;
}
strong { font-weight: 600; color: var(--text); }
small { font-size: 0.85em; color: var(--text-mute); }
.muted { color: var(--text-mute); }

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(3rem, 7vw, 6rem);
}
.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}
.section > .container > h2 {
  margin-bottom: 1.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  border: 1px solid transparent;
  transition: background-color .15s var(--ease), border-color .15s var(--ease), color .15s var(--ease), transform .15s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn--primary:hover { background: var(--accent-2); color: var(--accent-ink); }
.btn--secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-2);
}
.btn--secondary:hover { background: var(--surface-2); border-color: var(--accent); color: var(--text); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Accessibility helpers ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Site header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10,10,10,.78);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(10,10,10,.92);
  border-bottom-color: var(--border);
}
.nav {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.brand:hover { color: var(--text); }
.brand__mark {
  width: 28px;
  height: 28px;
  display: inline-block;
}
.brand__name { font-family: var(--font-mono); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-left: auto;
  font-size: 0.92rem;
}
.nav__links a:not(.btn) {
  color: var(--text-mute);
  font-weight: 500;
}
.nav__links a:not(.btn):hover { color: var(--text); }
.nav__toggle {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  position: relative;
}
.nav__toggle-bar,
.nav__toggle-bar::before,
.nav__toggle-bar::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.nav__toggle-bar { position: relative; }
.nav__toggle-bar::before { position: absolute; top: -6px; left: 0; }
.nav__toggle-bar::after  { position: absolute; top:  6px; left: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar::before { transform: translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 720px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem var(--gutter) 1rem;
    margin-left: 0;
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links li { padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
  .nav__links li:last-child { border-bottom: 0; padding-top: 0.85rem; }
  .nav__links .btn { width: 100%; }
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 8vw, 6rem);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(246,130,31,.14), transparent 70%),
    radial-gradient(40% 50% at 80% 20%, rgba(250,174,64,.06), transparent 70%);
  pointer-events: none;
}
.hero > .container { position: relative; max-width: 900px; }
.hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #c9c9c9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  margin-top: 1.25rem;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--text-mute);
  max-width: 60ch;
}
.hero__ctas {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero__meta {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

/* ---------- Cards (Why Garrul) ---------- */
.cards {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}
.cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 820px) {
  .cards--3 { grid-template-columns: 1fr; }
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.card:hover { border-color: var(--border-2); transform: translateY(-2px); }
.card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.card p {
  color: var(--text-mute);
  font-size: 0.95rem;
}

/* ---------- Features grid ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
@media (max-width: 980px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .features { grid-template-columns: 1fr; } }
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: border-color .2s var(--ease);
}
.feature:hover { border-color: var(--accent); }
.feature h3 {
  font-size: 0.98rem;
  color: var(--text);
}
.feature p {
  color: var(--text-mute);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* ---------- How it works ---------- */
.how {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}
.how__diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.how__node {
  flex: 1 1 180px;
  text-align: center;
  padding: 1.25rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text);
  line-height: 1.4;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.how__node small { color: var(--text-dim); font-size: 0.78rem; }
.how__node--accent {
  background: linear-gradient(180deg, rgba(246,130,31,.12), rgba(246,130,31,.03));
  border-color: rgba(246,130,31,.5);
  color: var(--accent-2);
}
.how__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 1.4rem;
  padding: 0 0.5rem;
}
@media (max-width: 720px) {
  .how__diagram { flex-direction: column; }
  .how__arrow { transform: rotate(90deg); }
}
.how__copy { display: grid; gap: 1rem; }
.how__copy p { color: var(--text-mute); }
.how__copy strong { color: var(--text); }
.how__copy code {
  background: var(--surface);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ---------- Code block (Install) ---------- */
.code {
  margin: 1.25rem 0;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text);
}
.code code { font-family: var(--font-mono); }

/* ---------- Cost bullets ---------- */
.lede {
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 1rem;
}
.bullets {
  display: grid;
  gap: 0.5rem;
  margin: 1.25rem 0;
}
.bullets li {
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--text-mute);
}
.bullets strong { color: var(--text); }

/* ---------- FAQ accordion ---------- */
.faq {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s var(--ease);
}
.faq details[open] { border-color: var(--border-2); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 400;
  transition: transform .2s var(--ease);
  line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq summary:hover { color: var(--accent); }
.faq details > p {
  padding: 0 1.25rem 1.1rem;
  color: var(--text-mute);
  font-size: 0.95rem;
}
.faq details > p a { color: var(--accent-2); }

/* ---------- Comments mount ---------- */
.comments-mount {
  margin-top: 1.5rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px dashed var(--border-2);
  border-radius: var(--radius);
  text-align: center;
  min-height: 120px;
  display: grid;
  place-items: center;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
  margin-top: 2rem;
  background: var(--bg-alt);
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
  font-size: 0.9rem;
}
.site-footer a { color: var(--text-mute); }
.site-footer a:hover { color: var(--accent); }