/* Custom CSS untuk Sistem Pakar Diagnosa Penyakit Kulit */

/* General Body Styling */
body {
    font-family: 'Poppins', sans-serif; /* Menggunakan Google Font Poppins */
    background-color: #f8f9fa; /* Warna latar belakang abu-abu terang */
    line-height: 1.6; /* Ketinggian baris untuk keterbacaan */
    color: #343a40; /* Warna teks default */
    padding-top: 56px; /* Padding untuk fixed navbar */
}

/* Navbar Styling */
.navbar {
    transition: background-color 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75); /* Warna link default */
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: white; /* Warna link saat hover */
}

.navbar-nav .nav-item .btn {
    padding: 8px 15px;
    border-radius: 50px; /* Tombol lebih rounded */
    font-weight: 600;
    transition: all 0.3s ease;
}

.navbar-nav .nav-item .btn-primary:hover {
    background-color: #0056b3; /* Darker blue on hover */
    border-color: #0056b3;
}

/* Hero Section Styling */
.hero-section {
    background: linear-gradient(rgba(0, 70, 150, 0.7), rgba(0, 123, 255, 0.7)), url('../img/background-kulit.jpg') no-repeat center center; /* Gradient overlay dengan gambar */
    background-size: cover;
    background-attachment: fixed; /* Efek parallax */
    color: white;
    padding: 120px 0; /* Padding atas dan bawah lebih besar */
    text-align: center;
    min-height: 650px; /* Tinggi minimum section */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden; /* Pastikan tidak ada scroll horizontal dari animasi */
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top left, rgba(255,255,255,0.1), transparent 50%),
                radial-gradient(circle at bottom right, rgba(255,255,255,0.1), transparent 50%);
    pointer-events: none;
    animation: pulseBackground 10s infinite alternate; /* Animasi latar belakang */
}

@keyframes pulseBackground {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.05); opacity: 0.9; }
}

.hero-section h1 {
    font-size: 3.5rem; /* Ukuran judul lebih besar */
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-section p {
    font-size: 1.35rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-section .btn {
    border-radius: 50px;
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.hero-section .btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #343a40;
}

.hero-section .btn-warning:hover {
    background-color: #e0a800;
    border-color: #e0a800;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.hero-section .btn-outline-light:hover {
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Tentang Sistem Section */
#tentang {
    padding: 80px 0;
    background-color: #ffffff;
    border-bottom: 1px solid #e9ecef;
}

#tentang img {
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

#tentang h2 {
    color: #007bff;
    font-size: 2.5rem;
}

/* Fitur Unggulan Section */
#fitur {
    padding: 80px 0;
    background-color: #f8f9fa;
}

#fitur h2 {
    color: #6c757d;
    font-size: 2.5rem;
}

.card-feature {
    border: none;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    background-color: white;
}

.card-feature:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.icon-feature {
    font-size: 3.5rem; /* Ukuran ikon lebih besar */
    color: #007bff; /* Warna ikon */
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.card-feature:hover .icon-feature {
    color: #0056b3; /* Warna ikon berubah saat hover */
}

/* Call to Action Section */
.custom-btn-cta {
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 1.25rem;
    font-weight: 700;
    transition: all 0.3s ease;
    background-color: #ffffff;
    color: #007bff !important; /* Override Bootstrap default */
    border: 2px solid #ffffff;
}

.custom-btn-cta:hover {
    background-color: transparent;
    color: #ffffff !important;
    border-color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Footer Styling */
footer {
    background-color: #212529 !important; /* Darker footer */
    color: rgba(255, 255, 255, 0.8);
    padding: 40px 0;
    font-size: 0.85rem;
}

footer p {
    margin-bottom: 8px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .hero-section h1 {
        font-size: 2.8rem;
    }
    .hero-section p {
        font-size: 1.1rem;
    }
    .hero-section {
        padding: 100px 0;
        min-height: 550px;
    }
    #tentang, #fitur, .bg-primary {
        padding: 60px 0;
    }
    .card-feature {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 56px; /* Sesuaikan padding-top jika navbar berubah tinggi */
    }
    .hero-section h1 {
        font-size: 2.2rem;
    }
    .hero-section p {
        font-size: 1rem;
    }
    .hero-section .btn {
        padding: 10px 20px;
        font-size: 1rem;
        margin-bottom: 15px; /* Spasi antar tombol di mobile */
    }
    .custom-btn-cta {
        padding: 12px 30px;
        font-size: 1.1rem;
    }
    .navbar-brand {
        font-size: 1.3rem;
    }
}