/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #f4f4f4;
  color: #333;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
  background: #111;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 70px;
}

.logo-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 2px solid #00bfff;
  animation: logoBounce 2s infinite;
}

.logo-circle img {
  width: 50px;
  height: 50px;
}

header nav {
  display: flex;
  align-items: center;
}

header nav a {
  color: #fff;
  margin-left: 20px;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

header nav a:hover, header nav .btn:hover {
  color: #00bfff;
}

/* Auth Section */
.auth-section {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 70px);
  background: linear-gradient(135deg, #00bfff, #111);
  padding: 40px 20px;
}

.auth-box {
  background: #fff;
  padding: 40px 30px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 400px;
  text-align: center;
  animation: fadeInUp 1s ease-in-out;
}

.auth-box h2 {
  font-size: 32px;
  margin-bottom: 25px;
  color: #111;
}

.auth-box form input {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 16px;
  transition: 0.3s;
}

.auth-box form input:focus {
  border-color: #00bfff;
  outline: none;
}

.auth-btn {
  width: 100%;
  padding: 12px;
  border-radius: 50px;
  background: #00bfff;
  color: #fff;
  font-size: 18px;
  border: none;
  cursor: pointer;
  transition: 0.3s;
}

.auth-btn:hover {
  background: #0095cc;
}

.auth-box p {
  margin-top: 15px;
}

.auth-box a {
  color: #00bfff;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

.auth-box a:hover {
  text-decoration: underline;
}

/* Animations */
@keyframes fadeInUp {0%{opacity:0;transform:translateY(30px);}100%{opacity:1;transform:translateY(0);}}
@keyframes logoBounce {0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}

@media(max-width:480px){
  .auth-box {padding:30px 20px;}
}