:root {
  color-scheme: light dark;
  --bg: #0b0c10;
  --fg: #eaeff4;
  --muted: #9aa4b5;
  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #6bd3ff;
  --accent-strong: #00b2ff;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 10% 20%, rgba(107, 211, 255, 0.15), transparent 35%),
    radial-gradient(circle at 90% 10%, rgba(122, 166, 255, 0.15), transparent 25%),
    #07080d;
  color: var(--fg);
  line-height: 1.6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

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

.hero {
  padding: 64px 24px 24px;
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
}

.hero h1 {
  margin: 12px 0 4px;
  font-size: clamp(32px, 4vw, 44px);
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.contact {
  margin: 12px 0 16px;
  font-weight: 600;
}

.summary {
  margin: 0 auto 20px;
  max-width: 720px;
  color: var(--fg);
}

.badge {
  display: inline-block;
  padding: 8px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #041421;
  border: none;
}

.button.primary:hover {
  box-shadow: 0 8px 30px rgba(0, 178, 255, 0.25);
}

.button.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.content {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 24px 80px;
  display: grid;
  gap: 28px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.section-header h2 {
  margin: 0;
  font-size: 22px;
}

.pill {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 8px;
}

.card h3 {
  margin: 0;
  font-size: 18px;
}

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

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--fg);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tags span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--fg);
  font-weight: 600;
}

.chat-card {
  background: #04060a;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.chat-log {
  min-height: 220px;
  max-height: 420px;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  padding: 12px 14px;
  border-radius: 12px;
  max-width: 86%;
  white-space: pre-wrap;
  word-break: break-word;
}

.message.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #041421;
}

.message.ai {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.chat-form {
  display: flex;
  gap: 10px;
  padding: 12px;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.chat-form input {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  color: var(--fg);
}

.chat-status {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.footer {
  text-align: center;
  padding: 32px 16px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 640px) {
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .chat-form {
    flex-direction: column;
  }

  .chat-form button {
    width: 100%;
  }
}