/* Footer Styles */
footer {
    background: linear-gradient(135deg, #0a0f1f 0%, #0f172a 100%);
    color: #94a3b8;
    padding: 4rem 0 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary, #3b82f6), transparent);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

/* Kolom 1 - Logo & Deskripsi */
.footer-col:nth-child(1) {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 1.5rem;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.footer-logo:hover {
    transform: translateY(-2px);
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
}

.footer-description {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.8rem;
    color: #94a3b8;
}

/* Kolom 2 & 3 - Quick Links & Categories */
.footer-col {
    display: flex;
    flex-direction: column;
}

.footer-title {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    position: relative;
    display: inline-block;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary, #3b82f6), transparent);
    border-radius: 3px;
}

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

.footer-links li {
    margin-bottom: 0.9rem;
    transition: transform 0.3s ease;
}

.footer-links li:hover {
    transform: translateX(5px);
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    padding: 4px 0;
}

.footer-links a:hover {
    color: #fff;
}

.footer-links a::before {
    content: '▸';
    color: var(--primary, #3b82f6);
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.footer-links a:hover::before {
    opacity: 1;
}

/* Kolom 4 - Newsletter & Social */
.footer-col:nth-child(4) {
    max-width: 320px;
}

.footer-newsletter {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.newsletter-title {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.newsletter-input {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary, #3b82f6);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.newsletter-button {
    padding: 12px 24px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.newsletter-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

/* Social Links */
.footer-social {
    margin-top: 2rem;
}

.footer-social-title {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.social-link:hover {
    background: rgba(59, 130, 246, 0.2);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.social-link:hover::before {
    left: 100%;
}

/* Facebook khusus */
.social-link:nth-child(1):hover {
    background: #1877f2;
}

/* Twitter/X khusus */
.social-link:nth-child(2):hover {
    background: #000000;
}

/* Instagram khusus */
.social-link:nth-child(3):hover {
    background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
}

/* LinkedIn khusus */
.social-link:nth-child(4):hover {
    background: #0a66c2;
}

/* YouTube khusus */
.social-link:nth-child(5):hover {
    background: #ff0000;
}

/* Footer Bottom */
.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-copyright {
    color: #64748b;
    font-size: 0.9rem;
}

.footer-bottom-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.2rem 0;
}

.footer-bottom-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary, #3b82f6);
    transition: width 0.3s ease;
}

.footer-bottom-links a:hover {
    color: #fff;
}

.footer-bottom-links a:hover::after {
    width: 100%;
}

/* Back to Top Button */
.back-to-top {
    position: absolute;
    right: 2rem;
    top: -25px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    z-index: 2;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

/* Responsive Footer */
@media (max-width: 1100px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 2.5rem;
    }
    
    .footer-col:nth-child(4) {
        grid-column: span 3;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-col:nth-child(1) {
        grid-column: span 2;
        max-width: 100%;
    }
    
    .footer-col:nth-child(4) {
        grid-column: span 2;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .back-to-top {
        position: relative;
        right: auto;
        top: auto;
        margin: 1.5rem auto 0;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-col:nth-child(1),
    .footer-col:nth-child(4) {
        grid-column: span 1;
    }
    
    .footer-logo {
        font-size: 1.5rem;
    }
    
    .footer-description {
        font-size: 0.9rem;
    }
    
    .footer-bottom-links {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-container {
        padding: 0 1.5rem;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}