body{
    font-family:'Segoe UI',sans-serif;
    background:#f8f9fa;
}

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

.top-header{
    background:#ffffff;
    border-bottom:1px solid #ececec;
    padding:15px 0;
}

.logo{
    width:75px;
    height:75px;
    border-radius:50%;
    object-fit:cover;
    box-shadow:0 5px 15px rgba(0,0,0,.15);
}

.company-name{
    font-size:28px;
    font-weight:700;
    color:#1d3557;
}

.company-tagline{
    color:#777;
    font-size:14px;
}

.contact-box{
    text-align:right;
}

.contact-item{
    display:flex;
    justify-content:flex-end;
    align-items:center;
    margin-bottom:8px;
    color:#555;
}

.contact-item i{
    color:#0d6efd;
    font-size:22px;
    margin-right:10px;
}

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

.navbar{
    background:#0d6efd;
}

.navbar .nav-link{
    color:#fff !important;
    padding:15px 18px;
    font-weight:500;
}

.navbar .nav-link:hover{
    color:#ffd54f !important;
}

.navbar-toggler{
    border:none;
}

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

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

.hero{
    background:linear-gradient(135deg,#6D28D9,#2563EB);
    color:#fff;
    padding:110px 0;
    text-align:center;
}

.hero h1{
    font-size:48px;
    font-weight:bold;
}

.hero p{
    font-size:18px;
    margin-top:15px;
}

/* ========= content ================= */

/* Judul */
.section-title{
    font-weight:700;
    color:#0d6efd;
}

/* Card Buku */
.book-card{
    border:none;
    border-radius:18px;
    overflow:hidden;
    transition:.35s;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
}

.book-card:hover{
    transform:translateY(-8px);
    box-shadow:0 15px 35px rgba(0,0,0,.18);
}

/* Cover */
.book-cover{
    width:100%;
    height:340px;
    object-fit:cover;
}

/* Judul */
.book-title{
    font-size:18px;
    font-weight:700;
    height:52px;
    overflow:hidden;
}

/* Penulis */
.book-author{
    color:#6c757d;
    font-size:14px;
}


/* Badge */
.badge-category{
    font-size:12px;
}


.btn-detail{
    border-radius:30px;
}

/* untuk detail buku */

.info-item{
    padding:12px 0;
    border-bottom:1px solid #eee;
}

.info-item:last-child{
    border:none;
}

.label{
    font-weight:600;
    color:#555;
}

.synopsis{
    text-align:justify;
    line-height:1.8;
    color:#555;
}

.btn-custom{
    border-radius:30px;
    padding:10px 25px;
}

.feature{
    background:#fff;
    border-radius:15px;
    padding:20px;
    text-align:center;
    box-shadow:0 5px 15px rgba(0,0,0,.05);
}

.feature i{
    font-size:35px;
    color:#0d6efd;
}



/* =========== enn content ============= */


/* ==========================
   FOOTER
========================== */

footer{
    background:#1d3557;
    color:#fff;
    padding:20px;
}

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

@media(max-width:991px){

    .logo{
        width:60px;
        height:60px;
    }

    .company-name{
        font-size:22px;
    }

    .contact-box{
        text-align:left;
        margin-top:20px;
    }

    .contact-item{
        justify-content:flex-start;
    }

    .hero{
        padding:70px 20px;
    }

    .hero h1{
        font-size:34px;
    }

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

}