:root {
  --bg: #111827;
  --bg-alt: #1f2937;
  --panel: #1b2533;
  --border: #2b3850;
  --text: #e5e9f0;
  --muted: #9aa7bd;
  --accent: #38bdf8;
  --plus: #34d399;
  --minus: #f87171;
  --radius: 14px;
  --maxw: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

code {
  font-family: var(--mono);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  padding: 0.12em 0.4em;
  border-radius: 6px;
  font-size: 0.9em;
}

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

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1200px 600px at 70% -10%, rgba(56, 189, 248, 0.18), transparent 60%), var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding-bottom: 64px;
}

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

.brand__logo {
  border-radius: 8px;
  object-fit: cover;
}

.brand__name {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.nav__link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.nav__link:hover { color: var(--text); }

.hero__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 24px 0;
  text-align: center;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
  font-weight: 800;
}

.hero__subtitle {
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 1.15rem;
  color: var(--muted);
}

.hero__cta {
  display: flex;
  justify-content: center;
}

.hero__cta a {
  display: inline-flex;
  transition: transform 0.12s ease;
}
.hero__cta a:hover { transform: translateY(-2px); }

.hero__note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- Hero demo ---------- */
.hero__demo {
  max-width: 620px;
  margin: 48px auto 0;
  padding: 0 24px;
}

.chat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
  font-size: 0.95rem;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
}

.chat__line { margin: 6px 0; color: var(--text); }
.chat__user { font-weight: 700; color: var(--accent); }
.chat__karma {
  font-family: var(--mono);
  color: var(--plus);
  font-weight: 700;
}
.chat__bot {
  margin: 6px 0 14px;
  padding-left: 14px;
  border-left: 2px solid var(--border);
  color: var(--muted);
}
.chat__bot:last-child { margin-bottom: 0; }
.chat__bot-name {
  display: inline-block;
  font-weight: 700;
  color: var(--text);
  margin-right: 8px;
}
.chat__bot strong { color: var(--text); }

/* ---------- Sections ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 24px;
}

.section--alt {
  max-width: none;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section--alt > * {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  text-align: center;
  font-weight: 800;
}

.section__lead {
  text-align: center;
  color: var(--muted);
  margin: 0 auto 48px;
  max-width: 560px;
}

/* ---------- Grids / cards ---------- */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); margin-top: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  font-family: var(--mono);
  font-weight: 800;
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.card__badge--plus { background: rgba(52, 211, 153, 0.15); color: var(--plus); }
.card__badge--minus { background: rgba(248, 113, 113, 0.15); color: var(--minus); }
.card__badge--cap { background: rgba(56, 189, 248, 0.15); color: var(--accent); }

.card__title { margin: 0 0 8px; font-size: 1.2rem; }
.card p { margin: 0; color: var(--muted); }

.feature {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature__title { margin: 0 0 8px; font-size: 1.1rem; }
.feature p { margin: 0; color: var(--muted); }

/* ---------- Commands ---------- */
.commands {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.command {
  display: flex;
  align-items: baseline;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
}
.command__name {
  flex: 0 0 auto;
  background: rgba(56, 189, 248, 0.12);
}
.command__desc { color: var(--muted); }

/* ---------- CTA ---------- */
.section--cta { text-align: center; }
.cta__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  font-weight: 800;
}
.cta__subtitle { color: var(--muted); margin: 0 0 28px; }

/* ---------- Legal / prose ---------- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 80px;
}
.legal__back {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 24px;
}
.legal__back:hover { color: var(--text); }
.legal h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  font-weight: 800;
}
.legal__meta { color: var(--muted); font-size: 0.9rem; margin: 0 0 40px; }
.legal h2 {
  font-size: 1.3rem;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}
.legal h3 {
  font-size: 1.05rem;
  margin: 24px 0 6px;
  letter-spacing: -0.01em;
}
.legal p { color: var(--text); margin: 0 0 14px; }
.legal ul { color: var(--text); margin: 0 0 14px; padding-left: 22px; }
.legal li { margin: 6px 0; }
.legal a { color: var(--accent); text-decoration: none; }
.legal a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--text); }
.footer__links { display: flex; gap: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .grid--3 { grid-template-columns: 1fr; }
  .grid--2 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .command { flex-direction: column; gap: 6px; }
  .footer { flex-direction: column; gap: 10px; text-align: center; }
}