body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: #0f172a; color: #e2e8f0; margin: 0; }
.app { max-width: 760px; margin: 40px auto; padding: 24px; background: #111827; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); }
h1 { margin: 0 0 6px; }
.tag { margin: 0 0 20px; color: #93c5fd; }
.controls { margin-bottom: 10px; }
textarea { width: 100%; height: 140px; padding: 12px; border-radius: 8px; border: 1px solid #334155; background: #0b1220; color: #e2e8f0; }
button { margin-top: 10px; padding: 10px 14px; border: 0; border-radius: 8px; background: #3b82f6; color: white; font-weight: 600; cursor: pointer; }
button:disabled { opacity: .6; cursor: not-allowed; }
.output { margin-top: 18px; white-space: pre-wrap; background: #0b1220; padding: 12px; border-radius: 8px; border: 1px solid #334155; }
.disclaimer { font-size: 12px; color: #94a3b8; margin-top: 14px; }