/* Subscription form styles and notifications */

.subscription-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    font-weight: 500;
    animation: fadeIn 0.5s ease;
}

.subscription-message.success {
    background-color: var(--success-color);
    color: white;
}

.subscription-message.error {
    background-color: var(--danger-color);
    color: white;
}

.fade-out {
    animation: fadeOut 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* Newsletter form improvements */
.newsletter form {
    position: relative;
}

.newsletter input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.newsletter button[type="submit"] {
    position: relative;
    overflow: hidden;
}

.newsletter button[type="submit"]:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.newsletter button[type="submit"]:hover:before {
    width: 300px;
    height: 300px;
}

/* Form validation styles */
.newsletter input.invalid {
    border: 2px solid var(--danger-color);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    20%, 60% {
        transform: translateX(-5px);
    }
    40%, 80% {
        transform: translateX(5px);
    }
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--secondary-color);
    color: var(--dark-bg);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}