.pi-call-button {
    position: fixed;
    padding: 12px 24px;
    border-radius: 5px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    z-index: 999;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.pi-call-button:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transform: translateY(-2px);
}

.pi-call-button i {
    font-size: 18px;
}

/* Animations */
.pi-animation-pulse {
    animation: pi-pulse 2s infinite;
}

.pi-animation-bounce {
    animation: pi-bounce 1s infinite;
}

.pi-animation-shake {
    animation: pi-shake 1s infinite;
}

@keyframes pi-pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes pi-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

@keyframes pi-shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}