:root {
  color-scheme: dark;
  --bg: #0b0f19;
  --panel: #121826;
  --panel-2: #1a2233;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #4f46e5;
  --border: #263144;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(1000px 600px at 10% -10%, #1f2b4a, transparent), var(--bg);
  color: var(--text);
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: linear-gradient(135deg, #1b2336, #101622);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 24px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 28px;
}

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

.badge {
  background: rgba(79, 70, 229, 0.2);
  color: #c7d2fe;
  border: 1px solid rgba(79, 70, 229, 0.4);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.card h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.card.wide {
  grid-column: span 2;
}

.row {
  display: flex;
  gap: 10px;
  align-items: stretch;
  margin-bottom: 12px;
}

input, textarea, select {
  flex: 1;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input.mini {
  max-width: 140px;
}

button {
  background: var(--accent);
  border: none;
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

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

.output {
  background: #0a0f1a;
  border: 1px dashed var(--border);
  padding: 10px 12px;
  border-radius: 10px;
  min-height: 80px;
  max-height: 240px;
  overflow: auto;
  font-size: 12px;
  color: #cbd5f5;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .card.wide {
    grid-column: span 1;
  }
  .hero {
    flex-direction: column;
    align-items: flex-start;
  }
}