@import url('https://fonts.googleapis.com/css2?family=Noto+Sans:wght@700&family=Poppins:wght@400;500;600&display=swap');
* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Poppins", sans-serif; }
body { margin: 0; padding: 0; height: 100vh; }
.center { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 400px; background: white; border: 1px solid #cdcdcd; border-radius: 10px; box-shadow: 10px 10px 15px rgba(0,0,0,0.05); }
.center-loading { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 400px; background-color: ghostwhite; }
.center h1 { text-align: center; padding: 20px 0; border-bottom: 1px solid silver; }
.center form { padding: 0 40px; box-sizing: border-box; }
form .txt_field { position: relative; border-bottom: 2px solid #adadad; margin: 30px 0; }
.txt_field input { width: 100%; padding: 0 5px; height: 40px; font-size: 16px; border: none; background: none; outline: none; }
.txt_field label { position: absolute; top: 50%; left: 5px; color: #adadad; transform: translateY(-50%); font-size: 16px; pointer-events: none; transition: .5s; }
.txt_field span::before { content: ''; position: absolute; top: 40px; left: 0; width: 0%; height: 2px; background: #1B6EC2; transition: .5s; }
.txt_field input:focus ~ label,
.txt_field input:valid ~ label { top: -5px; color: #1B6EC2; }
.txt_field input:focus ~ span::before,
.txt_field input:valid ~ span::before { width: 100%; }
.pass { margin: -5px 0 20px 5px; color: #a6a6a6; cursor: pointer; }
.pass:hover { text-decoration: underline; }
input[type="submit"] { width: 100%; height: 50px; border: 1px solid; background: #1B6EC2; border-radius: 25px; font-size: 18px; color: #e9f4fb; font-weight: 700; cursor: pointer; outline: none; }
input[type="submit"]:hover { border-color: #1B6EC2; transition: .5s; }
.signup_link { margin: 30px 0; text-align: center; font-size: 16px; color: #666666; }
.signup_link a { color: #1B6EC2; text-decoration: none; }
.signup_link a:hover { text-decoration: underline; }
.error-message { margin-bottom: 30px; }