:root {
  --bg: #0b1020;
  --bg2: #111936;
  --card: rgba(15, 23, 42, 0.72);
  --border: rgba(148, 163, 184, 0.18);
  --text: #e5eefb;
  --muted: #9fb0cf;
  --accent: #7c3aed;
  --accent-2: #22c55e;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.28), transparent 30%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.16), transparent 25%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}
.shell { max-width: 1200px; margin: 0 auto; padding: 32px 20px 56px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.hero {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  padding: 28px;
  margin-bottom: 24px;
}
.badge {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.18);
  color: #d7c7ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
}
h1 { font-size: clamp(2.5rem, 5vw, 4.75rem); margin: 12px 0 8px; }
.lede, .hero-note p, .feature p, .footer p { color: var(--muted); line-height: 1.6; }
.hero-note { padding: 20px; border-radius: 20px; background: rgba(255,255,255,0.04); align-self: center; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.panel { padding: 20px; }
.panel-head, .actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel-head h2 { margin: 0 0 10px; }
textarea {
  width: 100%;
  min-height: 360px;
  resize: vertical;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  padding: 16px;
  font: 500 15px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(2, 6, 23, 0.6);
  color: var(--text);
  outline: none;
}
textarea:focus { border-color: rgba(124, 58, 237, 0.7); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.16); }
button {
  border: none;
  border-radius: 14px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}
button:hover { transform: translateY(-1px); }
.primary-btn { background: linear-gradient(135deg, var(--accent), #2563eb); color: white; }
.ghost-btn { background: rgba(255,255,255,0.06); color: var(--text); }
.toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}
.toggles label { display: inline-flex; align-items: center; gap: 8px; }
.stats { margin-top: 14px; color: var(--muted); font-size: 14px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.feature { padding: 20px; }
.feature h3 { margin-top: 0; }
.footer { text-align: center; margin-top: 28px; }

@media (max-width: 920px) {
  .hero, .grid, .features { grid-template-columns: 1fr; }
  textarea { min-height: 280px; }
}