/* Mengimpor font 'Poppins', yang modern dan bersih */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&display=swap');

/* Variabel Warna Terinspirasi dari Abcbook */
:root {
    --primary-color: #d92626; /* Merah kuat untuk tombol dan aksen */
    --dark-color: #242424;    /* Warna teks utama yang sangat gelap */
    --grey-color: #7a7a7a;    /* Warna teks sekunder/abu-abu */
    --light-grey-bg: #f9f9f9; /* Warna latar belakang halaman */
    --white-color: #ffffff;
    --border-color: #eeeeee;
}

/* Pengaturan Dasar Body */
body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-grey-bg);
    color: var(--dark-color);
    font-size: 16px;
    line-height: 1.7;
}

/* ====================================================== */
/* DESAIN NAVBAR MINIMALIS                                */
/* ====================================================== */
.navbar {
    background-color: var(--white-color) !important;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    padding: 1rem 0;
}
.navbar .nav-link {
    color: var(--dark-color) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s ease;
}
.navbar .nav-link:hover, .navbar .nav-link.active {
    color: var(--primary-color) !important;
}

/* ====================================================== */
/* HERO SECTION (SELAMAT DATANG)                          */
/* ====================================================== */
#heroCarousel {
    margin-bottom: 3rem; /* Jarak antara carousel dan konten di bawahnya */
    border-radius: 30px; /* Memberi sudut melengkung */
    overflow: hidden; /* Penting agar gambar mengikuti sudut melengkung */
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

#heroCarousel .carousel-inner {
    /* Mengatur bentuk banner agar tidak terlalu tinggi */
    border-radius: 30px; /* Memberi sudut melengkung */
    aspect-ratio: 16 / 5.3; /* Ganti 5 ke angka lebih besar (misal 6) jika ingin lebih pendek */
}

#heroCarousel .carousel-item img {
    /* Membuat gambar mengisi area carousel dengan sempurna */
    width: 100%;
    height: 100%;
    object-fit: cover;
}
/* ====================================================== */
/* DESAIN KARTU BUKU YANG BERSIH                          */
/* ====================================================== */
.card {
    border: none;
    border-radius: 8px;
    background-color: var(--white-color);
    box-shadow: 0 5px 20px rgba(0,0,0,0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden; /* Memastikan gambar tetap di dalam sudut melengkung */
}
.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
.card .card-img-top {
    height: 250px;
    object-fit: cover;
}
.card .card-body {
    padding: 1.5rem;
}
.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.card-text {
    font-size: 0.9rem;
    color: var(--grey-color);
}

/* ====================================================== */
/* DESAIN TOMBOL DAN INPUT                                */
/* ====================================================== */
.btn {
    border-radius: 50px; /* Tombol berbentuk pil */
    font-weight: 700;
    padding: 12px 30px;
    transition: all 0.3s ease;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
    box-shadow: 0 4px 15px rgba(217, 38, 38, 0.3);
}
.btn-primary:hover {
    background-color: #b81212; /* Merah lebih gelap saat hover */
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 38, 38, 0.4);
}
.form-control {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 12px;
}
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(217, 38, 38, 0.15);
}

/* ====================================================== */
/* DESAIN FOOTER                                          */
/* ====================================================== */
.site-footer {
    background-color: var(--dark-color);
    color: rgba(255, 255, 255, 0.7);
    padding: 3rem 0;
    margin-top: 4rem;
}
.site-footer p {
    margin: 0;
}
.site-footer .text-white-50 {
     color: rgba(255, 255, 255, 0.5) !important;
}