/* ==========================================
   GRAMSETHU MODERN FOOTER
   ========================================== */
.main-footer {
    background: #0f172a; /* Deep Dark Blue */
    color: #cbd5e1;
    padding: 70px 0 0;
    margin-top: 50px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}

/* Brand Column */
.footer-logo {
    margin-bottom: 20px;
}
.footer-logo a {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: 1px;
}
.footer-logo span { color: #3b82f6; }

.footer-desc {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 25px;
}

.footer-social {
    display: flex;
    gap: 15px;
}
.footer-social a {
    width: 38px;
    height: 38px;
    background: #1e293b;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: 0.3s;
    text-decoration: none;
}
.footer-social a:hover {
    background: #3b82f6;
    transform: translateY(-3px);
}

/* Links Columns */
.footer-col h4 {
    color: #fff;
    margin-bottom: 25px;
    font-size: 18px;
    position: relative;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 30px;
    height: 2px;
    background: #3b82f6;
}

.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 14px;
    transition: 0.3s;
}
.footer-col ul li a:hover {
    color: #3b82f6;
    padding-left: 5px;
}

/* Contact & Badges */
.contact-info {
    font-size: 14px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-badge {
    margin-top: 20px;
    background: #1e293b;
    padding: 10px;
    border-radius: 8px;
    border: 1px dashed #334155;
    text-align: center;
}

/* Footer Bottom */
.footer-bottom {
    background: #020617;
    padding: 25px 0;
    border-top: 1px solid #1e293b;
}
.bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}
.bottom-links {
    display: flex;
    gap: 20px;
    list-style: none;
}
.bottom-links a { color: #64748b; text-decoration: none; }

/* Back to Top Button */
#backToTop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    background: #3b82f6;
    color: white;
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-social, .footer-col h4::after {
        justify-content: center;
    }
    .footer-col h4::after { left: 50%; transform: translateX(-50%); }
    .bottom-flex {
        flex-direction: column;
        gap: 15px;
    }
}