body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0f172a;
  color: white;
}

.container {
  max-width: 420px;
  margin: auto;
  padding: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

.card {
  background: #1e293b;
  padding: 20px;
  border-radius: 20px;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

input {
  width: 100%;
  padding: 14px;
  margin-top: 10px;
  border-radius: 12px;
  border: none;
  font-size: 16px;
  outline: none;
}

button {
  width: 100%;
  padding: 14px;
  margin-top: 12px;
  border: none;
  border-radius: 14px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}

button:active {
  transform: scale(0.97);
}

.btn-green {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.btn-gray {
  background: #334155;
}

.btn-blue {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

/* 🔥 TOAST (mensagem bonita) */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #22c55e;
  padding: 12px 20px;
  border-radius: 12px;
  color: white;
  font-weight: bold;
  opacity: 0;
  transition: 0.3s;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}