:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --background-color: #ecf0f1;
    --text-color: #333;
    --container-bg: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

header h1 {
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.main-page .button-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* Stylizacja formularza */
form {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--secondary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    font-size: 1rem;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.5);
}

.back-link {
    display: block;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-decoration: none;
}

/* Responsywność */
@media (min-width: 768px) {
    .main-page .button-container {
        flex-direction: row;
        justify-content: center;
    }
}