/* Footer Styles */
.site-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-primary);
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-xl) 0 var(--spacing-sm);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-purple), var(--primary-gold), var(--primary-purple), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: var(--font-size-3xl);
    font-weight: bold;
    color: var(--primary-purple);
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-tagline {
    font-size: var(--font-size-lg);
    color: var(--primary-gold);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

.footer-social h3,
.footer-newsletter h3,
.footer-links h3 {
    color: var(--primary-gold);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm);
    background: rgba(157, 78, 221, 0.1);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
    border: 1px solid var(--border-primary);
    width: 50px;
    height: 50px;
}

.social-link:hover {
    background: rgba(157, 78, 221, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(157, 78, 221, 0.3);
}

.social-link svg {
    transition: transform var(--transition-normal);
}

.social-link:hover svg {
    transform: scale(1.1);
}

.social-link.linkedin:hover {
    border-color: #0077b5;
    box-shadow: 0 5px 15px rgba(0, 119, 181, 0.3);
}

.social-link.discord:hover {
    border-color: #5865f2;
    box-shadow: 0 5px 15px rgba(88, 101, 242, 0.3);
}

.social-link.github:hover {
    border-color: #ffffff;
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}

.social-link.kaggle:hover {
    border-color: #20beff;
    box-shadow: 0 5px 15px rgba(32, 190, 255, 0.3);
}

.footer-newsletter {
    max-width: 300px;
}

.footer-newsletter p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.newsletter-input-group {
    display: flex;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: var(--transition-normal);
}

.newsletter-input-group:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(255, 214, 10, 0.2);
}

.newsletter-input-group input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-sm);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    outline: none;
}

.newsletter-input-group input::placeholder {
    color: var(--text-muted);
}

.newsletter-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-dark);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.newsletter-btn:hover {
    transform: translateX(-2px);
    box-shadow: 0 4px 12px rgba(157, 78, 221, 0.4);
}

.newsletter-privacy {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

.newsletter-privacy a {
    color: var(--primary-gold);
    text-decoration: none;
}

.newsletter-privacy a:hover {
    text-decoration: underline;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
    display: block;
    padding: 0.3rem 0;
}

.footer-links ul li a:hover {
    color: var(--primary-gold);
    padding-left: var(--spacing-xs);
}

/* Horizontal quick links on large screens */
@media (min-width: 1024px) {
    .footer-links ul {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

    .footer-links ul li {
        margin-bottom: 0;
    }

    .footer-links ul li a:hover {
        padding-left: 0;
        transform: translateY(-2px);
    }
}

.footer-bottom {
    border-top: 1px solid var(--border-primary);
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-bottom-content p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-bottom-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-normal);
}

.footer-bottom-links a:hover {
    color: var(--primary-gold);
}

/* Mobile Responsiveness for Footer */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-brand,
    .footer-newsletter {
        max-width: 100%;
    }

    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .social-link {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-bottom-links {
        justify-content: center;
    }
}

/* Newsletter Success/Error Messages */
.newsletter-message {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    text-align: center;
    animation: slideIn 0.3s ease;
}

.newsletter-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--color-success);
}

.newsletter-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-error);
}