/* Toast Notification */
.toast-message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background-color: var(--text-color);
    color: var(--bg-color);
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 3000;
    pointer-events: none;
}

.toast-message.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Shake Animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}