/* ================= HEADER ================= */

.navbar{
    position:sticky;
    top:0;
    z-index:1000;
    background:rgba(14,26,43,0.85);
    backdrop-filter: blur(12px);
    transition:all 0.3s ease;
    padding:15px 0;
}

.navbar.scrolled{
    background:#0E1A2B;
    box-shadow:0 4px 20px rgba(0,0,0,0.15);
}

.navbar-brand{
    font-weight:700;
    font-size:22px;
    color:#fff !important;
    letter-spacing:0.5px;
}

.nav-link{
    color:rgba(255,255,255,0.85) !important;
    margin-left:20px;
    position:relative;
    font-weight:500;
    transition:all 0.3s ease;
}

.nav-link::after{
    content:"";
    position:absolute;
    bottom:-5px;
    left:0;
    width:0%;
    height:2px;
    background:var(--gold);
    transition:0.3s ease;
}

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

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

.navbar-toggler{
    border:none;
}

.navbar-toggler:focus{
    box-shadow:none;
}

.navbar-toggler-icon{
    filter:invert(1);
}

/* ================= HERO ================= */

.hero-section{
    position:relative;
    height:95vh;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
    color:#fff;
}

.hero-bg{
    position:absolute;
    width:100%;
    height:100%;
    background-size:cover;
    background-position:center;
    z-index:1;
    transform:scale(1.05);
    transition:transform 8s ease-in-out;
}

.hero-section:hover .hero-bg{
    transform:scale(1.1);
}

.hero-overlay{
    position:absolute;
    width:100%;
    height:100%;
    background:linear-gradient(
            135deg,
            rgba(14,26,43,0.85),
            rgba(18,58,90,0.7)
    );
    z-index:2;
}

.hero-content{
    position:relative;
    z-index:3;
    max-width:850px;
    animation:fadeUp 1.2s ease forwards;
}

.hero-content h1{
    font-size:52px;
    font-weight:700;
    margin-bottom:20px;
}

.hero-subtitle{
    font-size:20px;
    opacity:0.9;
    margin-bottom:35px;
}

.hero-btn{
    background:#D4AF37;
    color:#0E1A2B;
    padding:14px 40px;
    border-radius:50px;
    font-weight:600;
    text-decoration:none;
    transition:all 0.3s ease;
}

.hero-btn:hover{
    background:#fff;
    color:#0E1A2B;
    transform:translateY(-3px);
}

@keyframes fadeUp{
    from{
        opacity:0;
        transform:translateY(30px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

@media(max-width:768px){

    .hero-content h1{
        font-size:32px;
    }

    .hero-subtitle{
        font-size:16px;
    }

    .hero-section{
        height:75vh;
    }
}
/* ================= GRID ================= */

.service-card{
    position:relative;
    height:var(--card-height,360px);
    border-radius:14px;
    overflow:hidden;
    background:#f3f3f3;
    box-shadow:0 5px 25px rgba(0,0,0,0.08);
    transition:all 0.45s cubic-bezier(.4,0,.2,1);
    display:flex;
    flex-direction:column;
}

/* Cover takes flex ratio */
.service-cover{
    flex: 0 0 65%;
    background-size:cover;
    background-position:center;
    transition:all 0.45s cubic-bezier(.4,0,.2,1);
}

/* Content takes rest */
.service-content{
    flex: 1;
    background:#f3f3f3;
    padding:35px 20px 20px;
    text-align:center;
    transition:all 0.45s cubic-bezier(.4,0,.2,1);
    position:relative;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
}

/* Icon */
.service-icon{
    position:absolute;
    top:-30px;
    left:50%;
    transform:translateX(-50%);
    width:60px;
    height:60px;
    background:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:22px;
    box-shadow:0 5px 15px rgba(0,0,0,0.1);
}

/* Title */
.service-content h5{
    margin-top:10px;
    font-weight:600;
    font-size:18px;
}

/* Description */
.service-content p{
    font-size:14px;
    color:#777;
    margin-bottom:10px;
}

/* Button hidden */
.service-btn{
    margin-top:auto;
    padding:8px 22px;
    border-radius:6px;
    text-decoration:none;
    color:#fff;
    background:var(--btn-color);
    opacity:0;
    transform:translateY(30px);
    transition:all 0.4s ease;
}

/* Hover */
.service-card:hover{
    transform:translateY(-8px);
}

.service-card:hover .service-cover{
    flex: 0 0 30%;
}

.service-card:hover .service-btn{
    opacity:1;
    transform:translateY(0);
}

.service-btn:hover{
    background:var(--btn-hover);
}


/*<!------------------ footer css -------------->*/


 .main-footer{
     background: linear-gradient(135deg,#0E1A2B,#123A5A);
     color:rgba(255,255,255,0.85);
     padding:70px 0 0;
 }

.footer-brand h4{
    font-weight:700;
    margin-bottom:20px;
    color:#fff;
}

.footer-brand p{
    line-height:1.8;
}

.footer-title{
    font-weight:600;
    margin-bottom:20px;
    color:#fff;
    position:relative;
}

.footer-title::after{
    content:"";
    width:40px;
    height:2px;
    background:#D4AF37;
    position:absolute;
    left:0;
    bottom:-8px;
}

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

.footer-links li{
    margin-bottom:10px;
}

.footer-links a{
    color:rgba(255,255,255,0.85);
    text-decoration:none;
    transition:all 0.3s ease;
}

.footer-links a:hover{
    color:#D4AF37;
    padding-left:5px;
}

.footer-contact p{
    margin-bottom:8px;
}

.footer-social a{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    background:#D4AF37;
    color:#0E1A2B;
    border-radius:50%;
    margin-right:8px;
    transition:0.3s;
}

.footer-social a:hover{
    transform:translateY(-4px);
    background:#fff;
    color:#0E1A2B;
}

.footer-bottom{
    background:#0A1523;
    padding:18px 0;
    margin-top:50px;
    font-size:14px;
}

.dev-link{
    color:#D4AF37;
    font-weight:600;
    text-decoration:none;
}

.dev-link:hover{
    text-decoration:underline;
}

.whatsapp-float{
    position:fixed;
    bottom:80px;   /* ← আগের 20px ছিল, এখন উপরে উঠলো */
    right:20px;
    display:flex;
    align-items:center;
    gap:8px;
    background:#25D366;
    color:#fff;
    padding:12px 20px;
    border-radius:50px;
    font-weight:600;
    font-size:15px;
    box-shadow:0 5px 20px rgba(0,0,0,0.3);
    animation:pulse 1.5s infinite;
    text-decoration:none;
    z-index:999;
    transition:all 0.3s ease;
}

.whatsapp-float i{
    font-size:20px;
}

/* Mobile View */
@media(max-width:768px){

    .whatsapp-float{
        width:55px;
        height:55px;
        padding:0;
        justify-content:center;
        border-radius:50%;
        bottom:70px;  /* mobile এ একটু কম রাখলাম */
    }

    .whatsapp-float .wa-text{
        display:none;
    }

    .whatsapp-float i{
        font-size:26px;
    }
}

@keyframes pulse{
    0%{transform:scale(1);}
    50%{transform:scale(1.08);}
    100%{transform:scale(1);}
}


/* Responsive */
@media(max-width:991px){

    .main-footer .row{
        text-align:center;
    }

    .footer-title::after{
        left:50%;
        transform:translateX(-50%);
    }

    .footer-bottom .container{
        flex-direction:column;
        gap:10px;
        text-align:center;
    }
}