body {
    font-family: Arial, sans-serif;
    background: #f4f7f4;
    text-align: center;
    margin-top: 120px;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background: #2c3e50;
    color: #ecf0f1;
}

.title {
    font-size: 72px;
    font-weight: bold;
    color: #2ecc71;
    margin-bottom: 80px;
}

.button {
    display: block;
    width: 260px;
    margin: 20px auto;
    padding: 18px;
    font-size: 22px;
    font-weight: bold;
    border-radius: 14px;
    border: 2px solid #ddd;
    background: white;
    cursor: pointer;
    transition: 0.25s;
}

.button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
}

.helpme {
    color: #e74c3c;
}

.helper {
    color: #3498db;
}

.guardian {
    color: #8e44ad;
}

#dark-mode-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid #ddd;
    background: white;
    cursor: pointer;
}