Interactive Embossed Login form UI | HTML, CSS & JavaScript

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

body{
  height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
  background:
    linear-gradient(145deg,#f2f2f2,#cfcfcf);
  overflow:hidden;
}

/* Main Circle */
.circle{
  position:relative;
  width:380px;
  height:380px;
  border-radius:50%;
  display:flex;
  justify-content:center;
  align-items:center;
  animation:float 5s ease-in-out infinite;
}

/* Outer Ring */
.circle::before{
  content:"";
  position:absolute;
  inset:-6px;
  border-radius:50%;

background:
    linear-gradient(145deg,#ffffff,#bdbdbd);

box-shadow:
    12px 12px 25px rgba(0,0,0,0.18),
    -10px -10px 25px rgba(255,255,255,0.9),
    inset 3px 3px 8px rgba(255,255,255,0.8),
    inset -4px -4px 10px rgba(0,0,0,0.15);

animation:spin 8s linear infinite;
  z-index:-2;
}

/* Glow */
.circle::after{
  content:"";
  position:absolute;
  inset:-25px;
  border-radius:50%;
  background:
    radial-gradient(circle,
    rgba(255,255,255,0.7),
    rgba(180,180,180,0.2));

filter:blur(25px);
  z-index:-3;
}

/* Inner Mask */
.mask{
  position:absolute;
  inset:10px;
  border-radius:50%;

background:
    linear-gradient(145deg,#e8e8e8,#c8c8c8);

box-shadow:
    inset 12px 12px 24px rgba(0,0,0,0.15),
    inset -10px -10px 20px rgba(255,255,255,0.9);

z-index:-1;
}

.card{
  width:340px;
  height:340px;
  padding:55px 45px;
  border-radius:50%;
  background:
    linear-gradient(145deg,#f8f8f8,#d5d5d5);
  box-shadow:
    18px 18px 35px rgba(0,0,0,0.18),
    -12px -12px 25px rgba(255,255,255,0.95),
    inset 2px 2px 4px rgba(255,255,255,0.7),
    inset -3px -3px 6px rgba(0,0,0,0.08);
  text-align:center;
  position:relative;
  overflow:hidden;
}

/* Title */
h2{
  margin-bottom:30px;
  color:#555;
  font-size:30px;
  letter-spacing:1px;

text-shadow:
    2px 2px 4px rgba(0,0,0,0.15),
    -2px -2px 4px rgba(255,255,255,0.8);
}

/* Input Box */
.input-box{
  position:relative;
  margin-bottom:28px;
}

/* Input */
.input-box input{
  width:100%;
  padding:16px 14px 10px;
  border:none;
  outline:none;
  border-radius:15px;

background:
    linear-gradient(145deg,#d9d9d9,#f9f9f9);

color:#555;
  font-size:15px;

box-shadow:
    inset 6px 6px 12px rgba(0,0,0,0.12),
    inset -5px -5px 10px rgba(255,255,255,0.9);

transition:0.35s;
}

.input-box input::placeholder{
  color:transparent;
}

/* Floating Label */
.input-box label{
  position:absolute;
  left:16px;
  top:15px;
  color:#888;
  font-size:15px;
  pointer-events:none;
  transition:0.35s ease;
}

.input-box input:focus + label,
.input-box input:valid + label{
  top:-10px;
  left:12px;
  font-size:12px;
  padding:3px 10px;
  border-radius:20px;

background:
    linear-gradient(145deg,#ffffff,#d6d6d6);

color:#666;

box-shadow:
    3px 3px 6px rgba(0,0,0,0.12),
    -3px -3px 6px rgba(255,255,255,0.9);
}

/* Button */
button{
  width:100%;
  padding:14px;
  border:none;
  border-radius:16px;

background:
    linear-gradient(145deg,#ffffff,#cfcfcf);

color:#555;
  font-size:16px;
  font-weight:600;
  cursor:pointer;

box-shadow:
    8px 8px 16px rgba(0,0,0,0.18),
    -6px -6px 14px rgba(255,255,255,0.95),
    inset 2px 2px 5px rgba(255,255,255,0.8),
    inset -3px -3px 6px rgba(0,0,0,0.08);

transition:0.35s;
}

button:hover{
  transform:translateY(-3px);
}

/* Success Message */
.success{
  position:absolute;
  inset:0;
  border-radius:50%;

background:
    linear-gradient(145deg,#f8f8f8,#d5d5d5);

display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;

opacity:0;
  visibility:hidden;
  transform:scale(0.8);

transition:0.5s;
}

/* Show Success */
.success.active{
  opacity:1;
  visibility:visible;
  transform:scale(1);
}

/* Success Icon */
.check{
  width:90px;
  height:90px;
  border-radius:50%;

display:flex;
  justify-content:center;
  align-items:center;

font-size:45px;
  color:#4CAF50;

background:
    linear-gradient(145deg,#ffffff,#d6d6d6);

box-shadow:
    10px 10px 20px rgba(0,0,0,0.15),
    -8px -8px 18px rgba(255,255,255,1);

animation:pop 0.5s ease;
}

/* Success Text */
.success h3{
  margin-top:18px;
  color:#555;
  font-size:24px;
}

.success p{
  margin-top:8px;
  color:#777;
  font-size:14px;
}

/* Animations */
@keyframes spin{
  from{transform:rotate(0deg);}
  to{transform:rotate(360deg);}
}

@keyframes float{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}

@keyframes pop{
  0%{
    transform:scale(0);
  }
  100%{
    transform:scale(1);
  }
}

- Interactive Embossed Login form UI

Live Preview