/* Warna Kustom */
:root {
    --color-primary: #1C2E4A; /* Biru Tua/Navy */
    --color-secondary: #F0F2F5; /* Abu-abu terang untuk latar belakang */
    --color-accent: #FFD700; /* Kuning Keemasan */
    --color-text: #333333;
    --color-text-light: #F8F9FA;
    --color-dark-gray: #6c757d;
}

/* Base Styles */
body {
    font-family: 'Open Sans', sans-serif;
    color: var(--color-text);
    line-height: 1.7;
    background-color: var(--color-secondary);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--color-primary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 3rem;
    color: var(--color-primary);
}

.section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

/* Header */
.main-header {
    background-color: var(--color-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.main-header .logo-text {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: var(--color-accent);
    font-size: 1.8rem;
}

/* Navigasi Desktop */
.main-header .nav-link {
    color: var(--color-text-light);
    font-weight: 400;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.main-header .nav-link:hover {
    color: var(--color-accent);
}

.main-header .login-btn {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transition: background-color 0.3s ease, color 0.3s ease;
    padding: 0.375rem 1rem;
}

.main-header .login-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

/* Navbar Toggler (untuk mobile) */
.navbar-toggler {
    border: none; /* Hilangkan border default */
    padding: 0.25rem 0.75rem;
}

.navbar-toggler .fa-bars {
    font-size: 1.5rem; /* Ukuran ikon hamburger */
    color: var(--color-accent); /* Warna ikon hamburger */
}

/* Offcanvas Menu Styling */
.offcanvas {
    background-color: var(--color-primary); /* Latar belakang menu mobile */
}

.offcanvas-header .offcanvas-title {
    color: var(--color-accent);
    font-family: 'Playfair Display', serif;
}

.offcanvas-header .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%); /* Membuat ikon close putih */
}

.offcanvas-body .navbar-nav .nav-link {
    color: var(--color-text-light);
    font-size: 1.1rem;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); /* Garis pemisah antar menu */
    transition: background-color 0.3s ease, color 0.3s ease;
}

.offcanvas-body .navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-accent);
}

.offcanvas-body .navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-accent);
    font-weight: 600;
}

.offcanvas-body .btn-action { /* Tombol login di menu mobile */
    margin-top: 1.5rem;
}


/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../img/library-bg-elegant.jpg') no-repeat center center/cover;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 3.8rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-light);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
}

.hero-section p.lead {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    color: rgba(255, 255, 255, 0.9);
}

.btn-action {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
    font-weight: 600;
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-action:hover {
    background-color: #E6B800;
    border-color: #E6B800;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    color: var(--color-primary);
}

.btn-outline-light-custom {
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--color-text-light);
    font-weight: 600;
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-outline-light-custom:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Features Section */
.features-section {
    background-color: #ffffff;
}

.features-section .feature-card {
    border: none;
    border-radius: 10px;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    background-color: #ffffff;
    padding: 20px;
}

.features-section .feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.08) !important;
}

.features-section .feature-icon {
    font-size: 4rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
    display: block;
    animation: bounceIn 1s ease-out;
}

.features-section .card-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.features-section .card-text {
    color: var(--color-dark-gray);
}


/* News Section */
.news-section {
    background-color: var(--color-secondary);
}

.news-section .news-card {
    border: none;
    border-radius: 10px;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    background-color: #ffffff;
    padding: 15px;
}

.news-section .news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.8rem 1.5rem rgba(0, 0, 0, 0.07) !important;
}

.news-section .card-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.news-section .card-subtitle {
    font-size: 0.9rem;
    color: var(--color-dark-gray);
}

.news-section .read-more {
    color: var(--color-primary);
    font-weight: 500;
    transition: color 0.2s ease;
    text-decoration: none;
}

.news-section .read-more:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.btn-outline-primary-custom {
    border-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
    padding: 0.6rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-outline-primary-custom:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Call to Action Section */
.cta-section {
    background-color: var(--color-primary);
}

.cta-section h3 {
    font-family: 'Playfair Display', serif;
    font-size: 2.8rem;
    color: var(--color-text-light);
}

.cta-section p.lead {
    color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.main-footer {
    background-color: #212529;
    color: var(--color-text-light);
}

.main-footer .footer-heading {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.main-footer ul {
    padding-left: 0;
}

.main-footer ul li {
    margin-bottom: 0.5rem;
}

.main-footer .footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.main-footer .footer-link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* Animasi sederhana */
@keyframes bounceIn {
    0%, 20%, 40%, 60%, 80%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-10px);
        transform: translateY(-10px);
    }
}
.feature-icon {
    animation-duration: 0.8s;
    animation-timing-function: ease-out;
    animation-fill-mode: both;
}

/* Responsive adjustments */
@media (max-width: 991.98px) { /* breakpoint Bootstrap untuk large (lg) */
    .hero-section h2 {
        font-size: 2.5rem;
    }
    .hero-section p.lead {
        font-size: 1rem;
    }
    .hero-section .btn {
        width: 100%;
        margin-bottom: 10px;
    }
    /* Sembunyikan navigasi desktop di bawah breakpoint lg */
    .main-header .nav {
        display: none !important; /* Pastikan tersembunyi */
    }
    /* Tampilkan tombol hamburger di bawah breakpoint lg */
    .navbar-toggler {
        display: block !important;
    }
    .section-title {
        font-size: 2rem;
    }
    
    
    /* Contoh CSS kustom untuk bagian berita */
    /* Styling untuk bagian Berita yang modern */
    .news-section {
        background-color: #f8f9fa; /* Warna latar belakang yang lembut */
    }
    
    .news-section .section-title {
        color: #212529; /* Warna judul yang gelap */
    }
    
    .news-section .news-card {
        text-decoration: none; /* Menghilangkan garis bawah pada link */
        color: inherit;
        display: block;
        height: 100%;
    }
    
    .news-card .card {
        border-radius: 1rem; /* Sudut membulat */
        transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out; /* Transisi yang halus */
    }
    
    .news-card:hover .card {
        transform: translateY(-10px); /* Efek melayang saat di-hover */
        box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important; /* Bayangan yang lebih menonjol */
    }
    
    .news-card .news-image {
        transition: transform 0.5s ease;
    }
    
    .news-card:hover .news-image {
        transform: scale(1.1); /* Gambar membesar saat di-hover */
    }
    
    .news-card .card-body {
        padding: 1.5rem;
    }
    
    .news-card .card-title {
        font-size: 1.25rem;
        color: #007bff; /* Warna judul yang kontras */
    }
    
    .news-card .card-text {
        font-size: 0.9rem;
    }
    
    .news-card .badge {
        text-transform: uppercase;
        font-weight: bold;
        font-size: 0.75rem;
        padding: 0.5em 0.8em;
    }
    
    /* Penyesuaian untuk tombol pada card */
    .news-card .btn {
        border-radius: 50px; /* Tombol yang membulat */
    }

}