:root {
  --bg: #0f172a;
  --surface: #111827;
  --card: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #38bdf8;
  --primary-strong: #0ea5e9;
  --border: #1f2937;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.15), transparent 35%),
    radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.15), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  line-height: 1.6;
}

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

main {
  width: min(1100px, 92vw);
  margin: 0 auto 4rem;
}

.hero {
  width: min(1100px, 92vw);
  margin: 3rem auto 2.5rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0 0 0.4rem;
}

h1 {
  font-size: clamp(2.2rem, 3vw, 3rem);
  margin: 0 0 0.3rem;
}

.tagline {
  margin: 0 0 1rem;
  color: var(--muted);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
}

.hero-card {
  background: linear-gradient(145deg, var(--card), #151c2e);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.hero-card__title {
  margin: 0 0 0.4rem;
  font-weight: 700;
}

.hero-card__body {
  margin: 0;
  color: var(--muted);
}

.grid.two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.list h3 {
  margin: 0 0 0.2rem;
}

.list p {
  margin: 0;
  color: var(--muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.tags li {
  background: #0b1220;
  border: 1px solid var(--border);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  font-weight: 700;
  border: 1px solid var(--border);
  color: var(--text);
  transition: transform 120ms ease, background 120ms ease, border 120ms ease;
}

.button.primary {
  background: var(--primary);
  color: #04101f;
  border-color: var(--primary-strong);
}

.button.ghost {
  background: transparent;
}

.button:hover {
  transform: translateY(-1px);
}

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

.chat {
  display: grid;
  gap: 0.75rem;
}

.chat-log {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  max-height: 360px;
  overflow-y: auto;
  display: grid;
  gap: 0.75rem;
}

.chat-row {
  display: flex;
  gap: 0.6rem;
}

.chat-row.user {
  justify-content: flex-end;
}

.bubble {
  padding: 0.7rem 0.9rem;
  border-radius: 12px;
  max-width: 75%;
  font-size: 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
}

.bubble.user {
  background: var(--primary);
  color: #04101f;
  border-color: var(--primary-strong);
}

.bubble.bot {
  background: #101827;
}

.chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.chat-form input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  font-size: 1rem;
}

.chat-form input:focus {
  outline: 2px solid var(--primary);
}

.status {
  min-height: 1rem;
  margin: 0;
}

.footer {
  width: min(1100px, 92vw);
  margin: 0 auto 2rem;
  color: var(--muted);
  text-align: center;
  padding-top: 1rem;
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .chat-form {
    grid-template-columns: 1fr;
  }

  .bubble {
    max-width: 100%;
  }
}