/* Background */
.signup-bg {
  min-height: 100vh;
  overflow: hidden;
}

/* Card */
.signup-card {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(20px);
  border-radius: 1.5rem;
  width: 100%;
  max-width: 480px;
  color: #fff;
  animation: fadeIn 1s ease;
  box-shadow: 0 0 30px rgba(255, 193, 7, 0.3);
}
.signup-card:hover {
  box-shadow: 0 0 50px rgba(255, 193, 7, 0.6);
}

/* Title */
.shimmer {
  font-size: 1.8rem;
  font-weight: bold;
  background: linear-gradient(90deg, #FFC107, #FF8C00, #FFC107);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: shimmer 3s linear infinite;
}

/* Floating Labels */
.floating-label {
  position: relative;
  display: block;
  width: 100%;
}
.floating-label i {
  position: absolute;
  top: 50%;
  left: 15px;
  transform: translateY(-50%);
  color: #FFC107;
  font-size: 1.2rem;
}
.floating-label input {
  width: 100%;
  padding: 0.9rem 2.5rem 0.9rem 2.8rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  color: #fff;
  font-size: 1rem;
  transition: all 0.3s ease;
}
.floating-label span {
  position: absolute;
  top: 50%;
  left: 2.8rem;
  transform: translateY(-50%);
  font-size: 0.9rem;
  color: #bbb;
  transition: 0.3s ease;
  pointer-events: none;
}
.floating-label input:focus {
  border-color: #FFC107;
  box-shadow: 0 0 20px rgba(255, 193, 7, 0.5);
  outline: none;
}
.floating-label input:focus + span,
.floating-label input:not(:placeholder-shown) + span {
  top: -8px;
  left: 2.5rem;
  font-size: 0.75rem;
  color: #FFC107;
  background: rgba(0,0,0,0.6);
  padding: 0 5px;
  border-radius: 4px;
}

/* Password Toggle Eye */
.password-toggle {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: #FFC107;
  font-size: 1.2rem;
  transition: color 0.3s;
}
.password-toggle:hover {
  color: #FF8C00;
}

/* Errors */
.error-message {
  color: #ff6b6b;
  font-size: 0.8rem;
  margin-top: 0.3rem;
  display: block;
}

/* Button */
.btn-submit {
  background: linear-gradient(90deg, #FFC107, #FF8C00);
  color: #fff;
  padding: 0.9rem;
  border: none;
  border-radius: 0.75rem;
  font-size: 1.1rem;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(255, 193, 7, 0.4);
}
.btn-submit:hover {
  transform: scale(1.05);
  background: linear-gradient(90deg, #FF8C00, #FFC107);
  box-shadow: 0 0 30px rgba(255, 193, 7, 0.6);
}

/* Link */
.link-info {
  color: #FFC107;
  font-weight: bold;
}
.link-info:hover {
  color: #FF8C00;
  text-decoration: underline;
}

/* Animations */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}