/* Resetování některých výchozích stylů */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f7fc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: #333;
}

h1 {
  text-align: center;
  font-size: 2rem;
  color: #2c3e50;
  margin-bottom: 20px;
}

form {
  background-color: #ffffff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  max-width: 500px;
  width: 100%;
  margin: 20px;
}

label {
  font-weight: bold;
  margin-bottom: 8px;
  display: block;
  color: #34495e;
}

input[type="text"], input[type="email"], textarea {
  width: 100%;
  padding: 12px;
  margin-top: 5px;
  margin-bottom: 15px;
  border: 2px solid #bdc3c7;
  border-radius: 5px;
  font-size: 1rem;
  background-color: #f9f9f9;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus, input[type="email"]:focus, textarea:focus {
  border-color: #3498db;
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 150px;
}

input[type="submit"] {
  width: 100%;
  padding: 12px;
  background-color: #3498db;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: background-color 0.3s ease;
}

input[type="submit"]:hover {
  background-color: #2980b9;
}

input[type="submit"]:active {
  background-color: #1f6ba3;
}