@import url('https://fonts.googleapis.com/css2?family=Montserrat+Alternates:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');

html {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #cfd9e3;
}

h1, h3 {
  font-family: "Montserrat", sans-serif;
}

.container {
  width: 480px;
  height: 630px;
  background: whitesmoke;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-radius: 10px;
  box-shadow: 0 5px 30px 10px rgba(0, 0, 0, 0.4);
}

/* Form */

form {
  width: 90%;
}

.form-group {
  height: 65px;
}

label {
  position: relative;
  bottom: 3px;
}

input {
  width: 100%;
  height: 34px;
  padding: 5px;
  border: 1px solid black;
  border-radius: 5px;
  outline: none;
  box-sizing: border-box;
  transition: all 0.3s;
}

input:valid {
  border: 1px solid green;
}

input:invalid {
 border: 1px solid red;
}

button {
  cursor: pointer;
  color: white;
  background: black;
  border: none;
  border-radius: 5px;
  height: 50px;
  width: 100%;
  font-family: "Montserrat", sans-serif;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1.5px;
  margin-top: 5px; 
}

button:hover {
  filter: brightness(200%);
  background: rgb(22, 22, 22);
}

button:focus {
  outline: none;
}

.message-container {
  border: 1px solid black;
  border-radius: 5px;
  width: 90%;
  margin-top: 20px;
  display: flex;
  justify-content: center;
  color: black;
}