:root {
  --bg: #0b1220;
  --card: #121a2b;
  --text: #e6eefc;
  --muted: #9fb0d3;
  --accent: #7aa2ff;
  --border: #1e2a44;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 100% 0, #0e1830 0, var(--bg) 50%);
}

.app {
  max-width: 900px;
  margin: 24px auto;
  padding: 16px;
}

header {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: .3px;
}

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

.controls {
  margin: 16px 0 12px;
  display: grid;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
}

.row {
  display: grid;
  gap: 6px;
}

.row.two {
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  color: var(--muted);
  font-size: 12px;
}

input, select, textarea {
  background: #0d1424;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(122,162,255,.15);
}

#chat {
  display: grid;
  gap: 10px;
  margin: 14px 0;
}

.msg {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.msg.user {
  background: #0e1a34;
  border-color: #12244a;
}

.msg.assistant {
  background: #0f1e2f;
}

/* Code block styling */
.msg pre {
  background: #0d1424;
  padding: 10px;
  border-radius: 8px;
  overflow-x: auto;
}

.msg code {
  background: #1a2338;
  color: #ffda75;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

/* Composer (input area) */
#composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  position: sticky;
  bottom: 10px;
}

#composer textarea {
  min-height: 56px;
  resize: vertical;
}

#composer button {
  background: var(--accent);
  border: none;
  color: #081022;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
}

#composer button:hover {
  filter: brightness(1.05);
}

code {
  background: #0d1424;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.social-links {
      display: flex;
      gap: 16px;
      margin-bottom: 12px;
    }
    .social-links a {
      color: #fff;
      text-decoration: none;
      font-size: 22px;
      transition: opacity 0.2s ease;
    }
    .social-links a:hover {
      opacity: 0.7;
    }