* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f2f3f6 0%, #eef0f3 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.signup-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
  padding: 40px;
  width: 100%;
  max-width: 520px;
  position: relative;
  overflow: hidden;
}

.signup-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  background-size: 200% 100%;
  animation: gradientMove 3s ease-in-out infinite;
}

@keyframes gradientMove {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.header {
  text-align: center;
  margin-bottom: 35px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.logo img {
  max-height: 50px;
  max-width: 200px;
  object-fit: contain;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: #333;
}

.welcome-text {
  font-size: 28px;
  font-weight: 600;
  color: #333;
  margin-bottom: 8px;
}

.subtitle {
  color: #666;
  font-size: 16px;
}

.form-row {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
}

.form-group {
  flex: 1;
  position: relative;
}

.form-group.full-width {
  flex: none;
  width: 100%;
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  color: #333;
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 14px;
}

.input-wrapper {
  position: relative;
}

.form-group input {
  width: 100%;
  padding: 16px 20px;
  border: 2px solid #e1e5e9;
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: #fff;
  outline: none;
}

.form-group input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
}

.form-group input::placeholder {
  color: #aaa;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 25px 0;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
}

.checkbox-group label {
  color: #666;
  font-size: 14px;
  cursor: pointer;
  line-height: 1.4;
}

.checkbox-group a {
  color: #667eea;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.checkbox-group a:hover {
  color: #764ba2;
}

.signup-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
  position: relative;
  overflow: hidden;
}

.signup-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.signup-btn:hover::before {
  left: 100%;
}

.signup-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.signup-btn:active {
  transform: translateY(0);
}

.signup-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-section {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #e1e5e9;
}

.login-section p {
  color: #666;
  font-size: 14px;
}

.login-section a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
  margin-left: 5px;
  transition: color 0.3s ease;
}

.login-section a:hover {
  color: #764ba2;
}

.footer {
  text-align: center;
  margin-top: 35px;
  color: #999;
  font-size: 12px;
}

@media (max-width: 480px) {
  .signup-container {
    margin: 10px;
    padding: 30px 25px;
  }

  .welcome-text {
    font-size: 24px;
  }

  .form-row {
    flex-direction: column;
    gap: 20px;
  }

  .form-group {
    margin-bottom: 0;
  }
}

.floating-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape:nth-child(1) {
  top: 20%;
  left: 10%;
  width: 80px;
  height: 80px;
  background: #667eea;
  border-radius: 50%;
  animation-delay: 0s;
}

.shape:nth-child(2) {
  top: 60%;
  right: 10%;
  width: 60px;
  height: 60px;
  background: #764ba2;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  animation-delay: 2s;
}

.shape:nth-child(3) {
  bottom: 20%;
  left: 20%;
  width: 100px;
  height: 100px;
  background: #667eea;
  border-radius: 20px;
  animation-delay: 4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

.error-message {
  color: #ff6b6b;
  font-size: 12px;
  margin-top: 5px;
  display: none;
}

.form-group.error input {
  border-color: #ff6b6b;
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.success-message {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: none;
}

.password-strength {
  margin-top: 5px;
  font-size: 12px;
}

.strength-weak {
  color: #ff6b6b;
}
.strength-medium {
  color: #ffa500;
}
.strength-strong {
  color: #4ecdc4;
}