body { font-family: 'Segoe UI', sans-serif; }
.whatsapp-btn {
    position: fixed; bottom: 20px; right: 20px;
    background-color: #25d366; color: white;
    padding: 15px 25px; border-radius: 50px;
    text-decoration: none; font-weight: bold;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3); z-index: 1000;
}
.il-kutu { border: 1px solid #eee; padding: 15px; border-radius: 10px; display: block; text-decoration: none; color: #333; transition: 0.3s; }
.il-kutu:hover { background: #007bff; color: white; transform: translateY(-5px); }