* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f1419;
  color: #e7e9ea;
  line-height: 1.5;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #1a2332;
  border-bottom: 1px solid #2f3b4a;
}
.logo { color: #4dabf7; font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.header nav a { color: #adb5bd; margin-left: 12px; text-decoration: none; font-size: 0.9rem; }
.container { max-width: 480px; margin: 0 auto; padding: 20px 16px 40px; }
.card {
  background: #1a2332;
  border-radius: 12px;
  padding: 24px 20px;
  border: 1px solid #2f3b4a;
}
h1 { margin: 0 0 20px; font-size: 1.4rem; }
label { display: block; margin: 12px 0 4px; font-size: 0.85rem; color: #adb5bd; }
input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #2f3b4a;
  border-radius: 8px;
  background: #0f1419;
  color: #e7e9ea;
  font-size: 1rem;
}
.btn-primary {
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: #4dabf7;
  color: #0f1419;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}
.muted { color: #868e96; font-size: 0.9rem; margin-top: 16px; }
.muted a { color: #4dabf7; }
.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem; }
.flash-error { background: #3d1f1f; color: #ff8787; }
.flash-success { background: #1f3d2a; color: #69db7c; }
.footer { text-align: center; padding: 20px; color: #495057; font-size: 0.8rem; }
code { background: #0f1419; padding: 2px 6px; border-radius: 4px; }