* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', sans-serif;
  background: #0f1117;
  color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card {
  background: #1e2235;
  border: 1px solid #2a2d3e;
  border-radius: 16px;
  padding: 48px 40px;
  width: 380px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.login-card h1 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.login-card p { font-size: 14px; color: #888; margin-bottom: 32px; }
.login-card input {
  width: 100%;
  padding: 12px 16px;
  background: #0f1117;
  border: 1px solid #2a2d3e;
  border-radius: 8px;
  color: #e0e0e0;
  font-size: 14px;
  margin-bottom: 16px;
  outline: none;
  transition: border-color 200ms;
}
.login-card input:focus { border-color: #5865f2; }
.login-card button {
  width: 100%;
  padding: 12px;
  background: #5865f2;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 200ms;
}
.login-card button:hover { background: #4752c4; }
.error { color: #ed4245; font-size: 13px; margin-top: 8px; display: none; }
.error.visible { display: block; }