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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;      
  justify-content: center;  
  background: url("../images/oz.jpg") no-repeat center center fixed;
  background-size: cover;
  padding: 10px;
}

.wrapper {
  width: 90%;              
  max-width: 400px;        
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  color: #fff;
  background: rgba(0,0,0,0.3);
  position: relative;
}

form {
  display: flex;
  flex-direction: column;
}

h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.input-field {
  position: relative;
  border-bottom: 2px solid #ccc;
  margin: 15px 0;
}

.input-field label {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  font-size: 16px;
  color: #fff;
  pointer-events: none;
  transition: 0.15s ease;
}

.input-field input {
  width: 100%;
  height: 40px;
  background: transparent;
  border: none;
  outline: none;
  font-size: 16px;
  color: #fff;
  text-align: right;
}

.input-field input:focus~label,
.input-field input:valid~label {
  font-size: 0.8rem;
  top: 10px;
  transform: translateY(-120%);
}

.forget {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 25px 0 35px 0;
  flex-wrap: wrap;
}

#remember {
  accent-color: #fff;
}

.forget label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.wrapper a {
  color: #efefef;
  text-decoration: none;
}

.wrapper a:hover {
  text-decoration: underline;
}

button {
  background: #fff;
  color: #000;
  font-weight: 600;
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  border-radius: 3px;
  font-size: 16px;
  transition: 0.3s ease;
}

button:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

.register {
  text-align: center;
  margin-top: 30px;
}

/* دکمه برگشت */
.back-btn {
  position: absolute;
  top: 10px;
  left: 15px;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 5px;
  background: rgba(255,255,255,0.2);
  color: #fff;
  transition: 0.3s ease;
}

.back-btn:hover {
  background: rgba(255,255,255,0.4);
}

/* 📱 ریسپانسیو موبایل */
@media (max-width: 480px) {
  .wrapper {
    padding: 20px;
  }
  h2 {
    font-size: 1.5rem;
  }
  .forget {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  button {
    width: 100%;
  }
}