* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #0a1a2e 0%, #1a1a2e 100%);
  color: #e6edf3;
  min-height: 100vh;
  padding: 20px;
}
.container { max-width: 900px; margin: 0 auto; }
h1 { text-align: center; margin-bottom: 10px; }
.subtitle { text-align: center; color: #888; margin-bottom: 30px; }
.content { display: grid; gap: 20px; }
.inputs { background: rgba(255,255,255,0.1); padding: 20px; border-radius: 12px; }
.results { background: rgba(255,255,255,0.1); padding: 20px; border-radius: 12px; }
h2 { margin-bottom: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-bottom: 20px; }
.input-group label { display: block; margin-bottom: 5px; color: #aaa; }
.input-group input { width: 100%; padding: 10px; border-radius: 6px; border: 1px solid #444; background: #1a1a2e; color: #fff; }
button { width: 100%; padding: 12px; background: #4a90d9; border: none; border-radius: 6px; color: white; font-size: 16px; cursor: pointer; }
button:hover { background: #357abd; }
#output { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.output-item { background: rgba(0,0,0,0.2); padding: 15px; border-radius: 8px; text-align: center; }
.output-item strong { display: block; color: #4a90d9; margin-bottom: 5px; }
.output-item span { font-size: 24px; font-weight: bold; }