/* =========================
   BACK BUTTON – FUTUREGURU
========================= 
.back-btn{
    display:inline-block;
    margin:20px;
    padding:8px 18px;
    background:#000;
    color:#fff;
    text-decoration:none;
    border-radius:6px;
    font-weight:bold;
    border:2px solid #000;
    transition:all 0.3s ease;
}

/* 🔥 GOLDEN HOVER */
.back-btn:hover{
    background:linear-gradient(135deg, #d4af37, #ffd700);
    color:#000;
    border-color:#d4af37;
    box-shadow:0 0 10px rgba(212,175,55,0.8);
}