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

body{
  background:radial-gradient(circle at top,#0f2027,#203a43,#2c5364);
  color:#fff;
  height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
}

.login-container{
  display:flex;
  justify-content:center;
  align-items:center;
  height:100vh;
  animation:fadeIn 1.2s ease;
}

.login-box{
  position:relative;
  background:rgba(255,255,255,0.08);
  padding:45px 40px 45px;
  border-radius:16px;
  backdrop-filter:blur(15px);
  box-shadow:0 4px 40px rgba(0,255,198,0.15);
  text-align:center;
  width:360px;
  transition:.3s;
}

.login-box h1{
  font-weight:600;
  font-size:28px;
  margin-bottom:10px;
}

h1 span{ color:#00ffc6; }

.login-box p{
  color:#ccc;
  margin-bottom:25px;
  font-size:15px;
  line-height:1.5;
}

.login-box input{
  width:100%;
  margin: 0;
  padding:12px;
  border:none;
  border-radius:10px;
  background:rgba(255,255,255,0.1);
  color:#fff;
  font-size:14px;
  transition:.3s;
}

.login-box input::placeholder{ color:#aaa; }

.login-box input:focus{
  outline:1px solid #00ffc6;
  box-shadow:0 0 10px rgba(0,255,198,0.4);
  background:rgba(255,255,255,0.15);
}

.input-group{
  position:relative;
  width:100%;
  margin:15px 0;
}

.input-group i{
  position:absolute;
  top:50%;
  left:10px;
  transform:translateY(-50%);
  color:#00ffc6;
  font-size:16px;
}

.input-group input{
  width:100%;
  padding:12px 12px 12px 40px;             
  border:1px solid rgba(255,255,255,0.25);   
  border-radius:10px;
  background:rgba(255,255,255,0.10);
  color:#fff;
  transition:.25s;
}

.options{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin:15px 0 25px;
  font-size:14px;
  color:#bbb;
}

.options label{
  display:flex;
  align-items:center;
  gap:8px;
  cursor:pointer;
}

.options a{
  color:#00ffc6;
  text-decoration:none;
  transition:.3s;
}

.options a:hover{
  color:#00b3ff;
  text-shadow:0 0 8px rgba(0,255,198,0.5);
}

.options input[type="checkbox"]{
  appearance:none;
  width:12px;
  height:12px;
  border:1px solid #00ffc6;
  border-radius:2px;
  background:transparent;
  cursor:pointer;
  position:relative;
  transition:all .25s ease;
}

.options input[type="checkbox"]:checked{
  background:linear-gradient(90deg,#00ffc6,#00b3ff);
  border:none;
  box-shadow:0 0 6px rgba(0,255,198,0.6);
}

.options input[type="checkbox"]:checked::after{
  content:"";
  position:absolute;
  inset:0;
  background:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='black' d='M4.2 8.4L1.8 6l.9-.9 1.5 1.5L9.3 1.5l.9.9-6 6z'/%3E%3C/svg%3E") center/contain no-repeat;
}

.login-box button{
  width:100%;
  padding:12px 0;
  background:linear-gradient(90deg,#00ffc6,#00b3ff);
  border:none;
  border-radius:30px;
  color:#000;
  font-weight:600;
  font-size:15px;
  cursor:pointer;
  transition:.3s;
}

.login-box button:hover{
  transform:translateY(-2px);
  box-shadow:0 0 20px rgba(0,255,198,0.6);
}

.signup-text{
  margin-top:25px;
  font-size:14px;
  color:#bbb;
}

.signup-text a{
  color:#00ffc6;
  text-decoration:none;
  transition:.3s;
}

.signup-text a:hover{
  color:#00b3ff;
  text-shadow:0 0 8px rgba(0,255,198,0.5);
}

.back-link{
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;

  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 4px 40px rgba(0,255,198,0.15);

  color: #00ffc6;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: .25s ease;
}

.back-link:hover{
  color:#00b3ff;
  border-color: rgba(255,255,255,0.18);
  box-shadow: 0 6px 44px rgba(0,255,198,0.18);
}

.input-group input:focus {
  outline: none;
  border: 1px solid #00ffc6;
  background: rgba(255,255,255,0.15);
  box-shadow: 0 0 0 2px rgba(0,255,198,0.12);
}

.input-group input:-webkit-autofill {
  -webkit-text-fill-color: #fff !important;
  caret-color: #fff !important;
  border: 1px solid rgba(255,255,255,0.25) !important;
  border-radius: 10px;
  box-shadow: 0 0 0 1000px rgba(255,255,255,0.10) inset !important;
  transition: background-color 9999s ease-in-out 0s;
}

.input-group input:-webkit-autofill:focus {
  -webkit-text-fill-color: #fff !important;
  caret-color: #fff !important;
  border: 1px solid #00ffc6 !important;
  border-radius: 10px;
  box-shadow: 0 0 0 1000px rgba(255,255,255,0.10) inset !important;
}

.input-group input:-moz-autofill {
  -moz-text-fill-color: #fff !important;
  border: 1px solid rgba(255,255,255,0.25) !important;
  border-radius: 10px;
  box-shadow: 0 0 0 1000px rgba(255,255,255,0.10) inset !important;
}

.input-group input:-moz-autofill:focus {
  -moz-text-fill-color: #fff !important;
  border: 1px solid #00ffc6 !important;
  border-radius: 10px;
  box-shadow: 0 0 0 1000px rgba(255,255,255,0.10) inset !important;
}

.error-box {
  background-color: rgba(255, 0, 0, 0.15);
  border: 1px solid rgba(255, 75, 75, 1);
  color: #ff6b6b;
  padding: 10px 15px;
  border-radius: 8px;
  margin-bottom: 15px;
  font-weight: 500;
  font-size: 14px;
  animation: fadeIn 0.4s ease;
}

.success-box {
  background-color: rgba(40, 167, 69, 0.15);  
  border: 1px solid rgba(40, 167, 69, 1);     
  color: #d4edda;                              
  padding: 10px 15px;
  border-radius: 8px;
  margin-bottom: 15px;
  font-weight: 500;
  font-size: 14px;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn{
  from{opacity:0; transform:translateY(20px);}
  to{opacity:1; transform:translateY(0);}
}

.loader {
  margin-top: 20px;
  border: 6px solid rgba(255, 255, 255, 0.2);
  border-top: 6px solid #00ffc6;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  animation: spin 0.7s linear infinite;
  margin-left: auto;
  margin-right: auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}