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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #45d4ff 0%, #0e27b0 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  width: 100%;
  max-width: 420px;
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.logo h1 {
  color: #0e27b0;
  font-size: 2rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.logo p {
  color: #666;
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #333;
  font-size: 0.95rem;
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #e1e8ed;
  border-radius: 10px;
  font-size: 1rem;
  transition: all 0.3s;
  background: #f8f9fa;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
  background: white;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn-login {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #45d4ff 0%, #0e27b0 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 10px;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

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

.error-message {
  background: #fee;
  color: #c00;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: none;
  border-left: 4px solid #c00;
  font-size: 0.9rem;
}

.login-footer {
  text-align: center;
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid #e1e8ed;
}

.login-footer p {
  color: #999;
  font-size: 0.85rem;
}

/* Mobile Responsive */
@media (max-width: 480px) {
  .login-container {
    padding: 30px 20px;
  }

  .logo h1 {
    font-size: 1.7rem;
  }

  .form-group input {
    padding: 12px 14px;
  }

  .btn-login {
    padding: 14px;
  }
}