:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --border: #2a2a2a;
  --text: #e0e0e0;
  --muted: #888;
  --accent: #3b82f6;
  --success: #22c55e;
  --error: #ef4444;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; font-family: system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }
.wrap { max-width: 56rem; margin: 0 auto; padding: 1.5rem; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.6rem 1rem; font-size: 0.9rem; border: none; border-radius: 6px; cursor: pointer; background: var(--accent); color: #fff; text-decoration: none; }
.btn:hover { opacity: 0.9; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.sec { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--error); }
.flash { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.flash.success { background: rgba(34,197,94,0.2); color: var(--success); }
.flash.error { background: rgba(239,68,68,0.2); color: var(--error); }
.flash.info { background: rgba(59,130,246,0.2); }
.section { margin-bottom: 1.5rem; }
.section h2 { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.5rem; }
textarea { width: 100%; min-height: 300px; padding: 0.75rem; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); font-family: monospace; font-size: 0.875rem; }
.loader { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 1rem auto; }
@keyframes spin { to { transform: rotate(360deg); } }