/* ================= NAVBAR ================= */

.navbar{
    background: rgba(15, 23, 42, 0.7) !important;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 12px 0;
    transition: 0.3s;
}

/* brand */
.navbar-brand{
    font-weight: 700;
    font-size: 22px;
    color: #0ea5e9 !important;
    letter-spacing: 1px;
}

/* nav links */
.nav-link{
    color: #e2e8f0 !important;
    font-size: 15px;
    margin-right: 10px;
    transition: 0.3s;
    position: relative;
}

/* hover underline effect */
.nav-link::after{
    content: "";
    position: absolute;
    width: 0%;
    height: 2px;
    bottom: -3px;
    left: 0;
    background: #0ea5e9;
    transition: 0.3s;
}

.nav-link:hover{
    color: #0ea5e9 !important;
}

.nav-link:hover::after{
    width: 100%;
}

/* dropdown */
.dropdown-menu{
    background: rgba(17, 24, 39, 0.95);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(15px);
    padding: 10px;
}

.dropdown-item{
    color: #cbd5e1;
    border-radius: 8px;
    transition: 0.2s;
}

.dropdown-item:hover{
    background: #0ea5e9;
    color: white;
}

/* dropdown header */
.dropdown-header{
    color: #06b6d4;
    font-size: 13px;
}

/* search box */
form input.form-control{
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
}

form input::placeholder{
    color: #cbd5e1;
}

form input:focus{
    box-shadow: none;
    background: rgba(255,255,255,0.15);
}

/* buttons */
.btn-primary{
    background: linear-gradient(135deg, #0ea5e9, #6366f1);
    border: none;
}

.btn-outline-light{
    border: 1px solid rgba(255,255,255,0.5);
}

/* NAVBAR always top */
.navbar{
    position: relative;
    z-index: 9999;
}

/* dropdown highest */
.dropdown-menu{
    z-index: 99999;
}

/* hero নিচে থাকবে */
.hero-section{
    position: relative;
    z-index: 1;
}

/* ================= MOBILE ================= */

@media(max-width:991px){

    .navbar-collapse{
        background: rgba(15, 23, 42, 0.95);
        padding: 15px;
        border-radius: 10px;
        margin-top: 10px;
    }

    .nav-link{
        padding: 10px 0;
    }

    .dropdown-menu{
        background: transparent;
        border: none;
        padding-left: 10px;
    }

    .dropdown-item{
        padding-left: 20px;
    }

    form{
        margin-top: 10px;
    }
}