Circle electric login form | 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: radial-gradient(circle at center, #0a0a1f, #050510);
  overflow: hidden;
}

/* Circle Wrapper */
.circle {
  position: relative;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: float 5s ease-in-out infinite;
}

/* Electric rotating ring */
.circle::before {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    #00f0ff,
    #0066ff,
    #00ffff,
    #0066ff,
    #00f0ff
  );
  animation: spin 3s linear infinite;
  z-index: -2;
}

/* Glow layer */
.circle::after {
  content: "";
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: conic-gradient(
    #00f0ff,
    #0066ff,
    #00ffff
  );
  filter: blur(35px);
  opacity: 0.6;
  z-index: -3;
}

/* Inner mask (creates border thickness) */
.mask {
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: #050510;
  z-index: -1;
}

/* Login Card */
.card {
  width: 280px;
  padding: 30px;
  border-radius: 40px;
  background: rgba(15,15,35,0.85);
  backdrop-filter: blur(12px);
  text-align: center;
  color: #fff;
}

/* Title */
h2 {
  margin-bottom: 20px;
  color: #00eaff;
  text-shadow: 0 0 12px #00eaff;
}

/* Inputs */
.input-box {
  margin-bottom: 15px;
}

.input-box input {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: 8px;
  outline: none;
  background: rgba(255,255,255,0.05);
  color: white;
  transition: 0.3s;
}

.input-box input:focus {
  box-shadow: 0 0 10px #00eaff;
}

/* Button */
button {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(90deg, #00eaff, #0066ff);
  color: white;
  cursor: pointer;
  font-size: 15px;
  transition: 0.3s;
}

button:hover {
  transform: scale(1.06);
  box-shadow: 0 0 18px #00eaff;
}

/* Animations */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Hover = stronger electric */
.circle:hover::before {
  animation-duration: 1s;
  filter: brightness(1.6);
}

.circle:hover::after {
  opacity: 0.9;
}

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