:root {
    --primary: #2c3e50;
    --text-light: #ecf0f1;
    --shadow: rgba(0, 0, 0, 0.1);
}

footer {
    background: linear-gradient(45deg, #2c3e50, #3498db);
    color: var(--text-light);
    padding: 1.3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: auto;
}

footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(
        90deg,
        #4a90e2 0%,    /* Blue */
        #48bb78 33%,   /* Green */
        #4a90e2 66%,   /* Blue */
        #48bb78 100%   /* Green */
    );
    background-size: 300% 100%;
    animation: gradient-shift 8s linear infinite;
}

@keyframes gradient-shift {
    0% { background-position: 100% 0; }
    100% { background-position: 0 0; }
}

.copyright {
    font-size: 0.95rem;
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    cursor: default;
}

.copyright:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px var(--shadow);
}

.copyright::after {
    content: " ♥";
    display: inline-block;
    color: #e74c3c;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s ease;
}

.copyright:hover::after {
    opacity: 1;
    transform: scale(1) translateY(-2px);
}

@media (max-width: 768px) {
    footer {
        padding: 1.25rem;
    }

    .copyright {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    footer {
        padding: 1rem;
    }

    .copyright {
        font-size: 0.85rem;
        line-height: 1;
    }
}