body {
  background: linear-gradient(120deg,#1976d2 0%,#42a5f5 100%);
  font-family: 'Segoe UI', Arial, sans-serif;
  min-height: 100vh;
  margin: 0;
}
.container {
  max-width: 400px;
  margin: 48px auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 6px 32px rgba(0,0,0,0.14);
  padding: 32px 28px 18px 28px;
}
input,button {
  width: 100%;
  padding: 11px;
  margin: 9px 0 18px 0;
  border-radius: 5px;
  border: 1px solid #bdbdbd;
  font-size: 1rem;
}
input:focus {
  border-color: #1976d2;
  outline: none;
}
label {
  font-size: 1.05em;
}
button {
  background: #1976d2;
  color: #fff;
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: background .18s;
}
button:hover {
  background: #1565c0;
}
.msg-erro {
  background: #ffebee;
  color: #b71c1c;
  border-left: 4px solid #f44336;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}
.msg-sucesso {
  background: #e8f5e9;
  color: #1b5e20;
  border-left: 4px solid #43a047;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}
@media (max-width: 500px) {
  .container { padding: 22px 6px; }
  body { font-size: 15px; }
}