:root {
  --primary-color: #2c3e50;
  --secondary-color: #34495e;
  --accent-color: #1abc9c;
  --background-color: #f2ebd9;
  --text-color-dark: #2c3e50;
  --text-color-light: #ecf0f1;
  --border-color: #bdc3c7;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-color-dark);
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-width: 400px;
}

.container {
    min-width: 300px;
    max-width: 800px;
    padding: 40px;
    margin: 0 20px 50px 20px;
    background-color: #f3f3f3;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: left;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.7em;
}
h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.2em;
}

p {
    margin-bottom: 30px;
    color: var(--secondary-color);
}

.form-group {
    margin-bottom: 25px;
}

input[type="email"] {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input[type="email"]:focus {
    border-color: var(--primary-color);
    outline: none;
}

button {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: none;
    padding: 15px 30px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--secondary-color);
}

footer {
    margin-top: 40px;
    font-size: 14px;
    color: var(--secondary-color);
}