/* Import Poppins font from Google Fonts for a modern look */
@import url("https://fonts.googleapis.com/css2?family=Poppins: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&display=swap");

/* Reset default browser styles and set base font */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

/* Header styles: fixed at the top, blurred background, flex layout */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 100px;
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  z-index: 99;
}

/* Logo styling */
.logo {
  font-size: 30px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  margin-right: auto;
}

/* Navigation links styling */
nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  margin-left: 40px;
}

/* User authentication area */
.user-auth {
  margin-left: 40px;
}

/* Login button in header */
.user-auth .login-btn-modal {
  height: 40px;
  padding: 0 35px;
  background: transparent;
  border: 2px solid #fff;
  border-radius: 40px;
  font-size: 16px;
  color: #fff;
  font-weight: 500;
  cursor: pointer;
  transition: .5s;
}

/* Login button hover effect */
.user-auth .login-btn-modal:hover {
  background: #fff;
  color: #222;
}

/* Main section with background image */
section {
  position: relative;
  background: url('download (1).webp') no-repeat center center/cover;
  min-height: 100vh;
  padding: 0 100px;
}

/* Welcome message styling */
section h1 {
  position: absolute;
  bottom: 40px;
  left: 40px;
  font-size: 25px;
  color: #fff;
  font-weight: 600;
}

/* Modal container for login/register forms */
.auth-modal{
  position: fixed;
  width: 420px;
  height: 440px;
  background: rgba(0,0,0, .3);
  border: 2px solid rgba(255,255,255, .3);
  border-radius: 20px;
  box-shadow: 0 0 30px rgba(0,0,0, .3);
  backdrop-filter: blur(20px);
  color: #fff;
  inset: 0;
  margin: auto;
  display: none; /* Hidden by default */
  align-items: center;
  overflow: hidden;
  transition: height .2s ease, transform .5s ease;
}

/* Show modal when .show class is added */
.auth-modal.show{
  transform: scale(1);
  display: flex;
}

/* Slide effect for register form */
.auth-modal.slide{
  height: 520px;
}

/* Form box styling for both login and register */
.auth-modal .form-box{
  width: 100%;
  padding: 40px;
}

/* Show login form by default, register form slides in */
.auth-modal .form-box.login,
.auth-modal.slide .form-box.register{
  transform: translateX(0);
  transition: transform 0.1s ease;
}

/* Hide login form when sliding to register */
.auth-modal.slide .form-box.login{
  transform: translateX(-400px);
  transition: none;
}

/* Register form is positioned off-screen by default */
.auth-modal .form-box.register{
  position: absolute;
  transform: translateX(400px);
}

/* Form headings */
.form-box h2{
  font-size: 35px;
  text-align: center;
}

/* Input box styling */
.input-box{
  position: relative;
  width: 100%;
  height: 50px;
  margin: 30px 0;
}

/* Input fields */
.input-box input{
  width: 100%;
  height: 100%;
  background: transparent;
  border: 2px solid rgba(255,255,255, .3);
  outline: none;
  border-radius: 40px;
  font-size: 16px;
  color: #fff;
  padding: 20px 45px 20px 20px;
}

/* Placeholder text color */
.input-box input::placeholder{
  color: #fff;
}

/* Icon inside input box */
.input-box i {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
}

/* Form buttons */
.btn{
  width: 100%;
  height: 45px;
  background: #fff;
  border-radius: 40px;
  box-shadow: 0 0 10px rgba(0,0,0, .1);
  font-size: 16px;
  color: #222;
  font-weight: 500;
  cursor: pointer;
}

/* Paragraphs in forms */
.form-box p{
  font-size: 14.5px;
  text-align: center;
  margin: 25px 0 10px;
}

/* Links in forms */
.form-box p a{
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

/* Hover effect for links */
.form-box p a:hover{
  text-decoration: underline;
}

/* Close button for modal */
.auth-modal .close-btn-modal{
  position: absolute;
  top: 0;
  right: 0;
  width: 45px;
  height: 45px;
  background: #fff;
  border: none;
  border-bottom-left-radius: 20px;
  font-size: 35px;
  color: #222;
  cursor: pointer;
  z-index: 1;
}