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

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), 
              url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.container {
  position: relative;
  width: 850px;
  height: 550px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  margin: 20px;
}

.form-box {
  position: absolute;
  right: 0;
  width: 50%;
  height: 100%;
  background: #ffffff;
  display: flex;
  align-items: center;
  color: #333;
  text-align: center;
  padding: 40px;
  z-index: 1;
  transition: .6s ease-in-out 1.2s, visibility 0s 1s;
}

.container.active .form-box {
    right: 50%;
}

.form-box.register {
  visibility: hidden;
}

.container.active .form-box.register {
    visibility: visible;
}
form {
  width: 100%;
}

.container h1 {
  font-size: 36px;
  margin: 0 0 10px;
}

.input-box {
  position: relative;
  margin: 18px 0;
}

.input-box input {
  width: 100%;
  padding: 13px 50px 13px 20px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  outline: none;
  font-size: 16px;
  color: #333;
  font-weight: 500;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.input-box input:focus {
  border-color: rgba(116, 148, 236, 0.7);
  box-shadow: 0 0 0 4px rgba(116, 148, 236, 0.18);
}

.input-box input::placeholder {
  color: #888;
  font-weight: 400;
}

.input-box i {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: #888;
}

.forgot-link {
  margin: 2px 0 16px;
}

.forgot-link a {
  font-size: 14.5px;
  color: #333;
  text-decoration: none;
}

.btn {
  width: 100%;
  height: 48px;
  background: #7494ec;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: #fff;
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: #5b7cfa;
  box-shadow: 0 12px 22px rgba(2, 6, 23, 0.18);
  transform: translateY(-1px);
}

.container p {
  font-size: 14.5px;
  margin: 15px 0;
}

.toggle-box {
  position: absolute;
  width: 100%;
  height: 100%;
}

.toggle-box::before {
    content: '';
    position: absolute;
    left: -250%;
    width: 300%;
    height: 100%;
    background: rgba(116, 148, 236, 0.85);
    backdrop-filter: blur(5px);
    z-index: 2;
    border-radius:150px ;
    transition: 1.8s ease-in-out;
}

.container.active .toggle-box::before {
    left: 50%;

}

.toggle-panel {
  position: absolute;
  width: 50%;
  height: 100%;
  display: flex;
  color: #eeeeee;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2;
  transition: .6s ease-in-out;
}

.toggle-panel.toggle-left {
    left:0 ;
    transition-delay: 1.2s;
}

.container.active .toggle-panel.toggle-left {
    left: -50%;
    transition-delay: .6s;

}
.toggle-panel.toggle-right {
    right: -50%;
    transition-delay: .6s;
}

.container.active .toggle-panel.toggle-right {
    right: 0;
    transition-delay: 1.2s;
}
.toggle-panel p {
  margin-bottom: 20px;
}

.toggle-panel .btn {
  width: 160px;
  height: 46px;
  background: transparent;
  border: 2px solid;
  box-shadow: none;
}

@media screen and (max-width: 650px) {
    .container {
        height: calc(100vh - 40px); 
    }

    .form-box {
        bottom: 0;
        width: 100%;
        height: 70%;
    }

    .container.active .form-box {
        right: 0;
        bottom: 30%;
    }

    .toggle-box::before {
        left: 0;
        top: -270%;
        width: 100%;
        height: 300%;
        border-radius: 20vw;
    }

    .container.active .toggle-box::before {
        top: 70%;
        left:0 ;
    }

    .toggle-panel {
        width: 100%;
        height: 30%;
    }

    .toggle-panel.toggle-left {
        top: 0;
    }

    .container.active .toggle-panel.toggle-left {
        left: 0;
        top: -30%;
    }

    .toggle-panel.toggle-right {
        right: 0;
        bottom: -30%;
    }

    .container.active .toggle-panel.toggle-right {
        bottom: 0;
    }
}

@media screen and (max-width: 650px) {
    .form-box {
        padding: 20px; 
    }

    .toggle-panel h1 {
        font-size: 30px;
    }

}