/* --- Import Google Font --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

/* --- Variabel Warna (Oranye-Kuning) --- */
:root {
    --primary-color: #F39C12; /* Oranye (Sunflower) */
    --secondary-color: #F1C40F; /* Kuning (Sun) */
    --dark-color: #2C3E50; /* Abu-abu Gelap (Midnight Blue) */
    --text-color: #34495E; /* Abu-abu Teks */
    --light-bg: #FFFBF5; /* Latar belakang (Sangat muda) */
    --white: #ffffff;
    --grey-border: #ecf0f1;
}

/* --- Reset Dasar & Font --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--light-bg);
    color: var(--text-color);
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

/* --- Bagian Header / Navbar --- */
.navbar {
    background-color: var(--white);
    padding: 15px 0;
    border-bottom: 2px solid var(--primary-color);
    position: sticky; /* Diubah ke sticky agar menu mobile bisa menempel */
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    position: relative;
    z-index: 1001;

    /* TAMBAHAN BARU */
    display: flex;         /* Membuat <img> dan <span> sejajar */
    align-items: center;   /* Menjajarkan secara vertikal */
    gap: 10px;             /* Memberi jarak 10px antara logo & teks */
}

/* GANTI Teks "IPS Seru" agar ukurannya tetap */
.logo span {
    font-size: 24px; 
}

.logo img {
    height: 35px; /* Anda bisa sesuaikan ukurannya di sini */
    width: auto;  /* Biarkan lebar otomatis agar proporsional */
}

.menu-toggle {
    font-size: 28px;
    background: none;
    border: none;
    color: var(--dark-color);
    cursor: pointer;
    transition: transform 0.2s ease;
    /* Tambahkan ini agar tombol di atas menu */
    position: relative;
    z-index: 1001;
}

.menu-toggle:hover {
    transform: scale(1.1);
}

/* --- Navigasi (Mobile) --- */
.main-nav {
    /* Sembunyikan secara default */
    display: none; 

    /* Jadikan overlay yang menempel di bawah header */
    position: absolute;
    top: 100%; /* Persis di bawah parent (.navbar) */
    left: 0;
    right: 0; /* Lebar penuh */
    
    background-color: var(--dark-color);
    z-index: 1000; /* Di bawah logo/hamburger, di atas konten */
}

/* Saat menu mobile aktif (di-klik) */
.main-nav.active {
    display: block;
}

.main-nav ul {
    list-style-type: none;
}

.main-nav ul li a {
    display: block;
    padding: 15px 20px;
    text-decoration: none;
    color: var(--white);
    border-bottom: 1px solid #4a637c;
    transition: background-color 0.2s;
}

.main-nav ul li a:hover {
    background-color: var(--primary-color);
}

/* --- Konten Utama --- */
main {
    padding-top: 20px;
    padding-bottom: 40px;
}

/* --- Hero Section Keren --- */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.3);
}
.hero-section h1 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.hero-section p { font-size: 16px; font-weight: 400; }

h2 { font-size: 24px; font-weight: 600; margin-bottom: 20px; border-bottom: 3px solid var(--grey-border); padding-bottom: 10px; color: var(--dark-color); }
h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: #E67E22; }

/* --- Desain Kartu (Card) --- */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
}
.card {
    background-color: var(--white);
    border: 1px solid var(--grey-border);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.6s ease-out forwards;
}
.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:hover {
    transform: translateY(-7px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid var(--grey-border);
}
.card h3, .card p { padding: 0 20px; }
.card p { padding-bottom: 20px; font-size: 15px; }
.card.kuis {
    border-left: 5px solid var(--secondary-color);
    padding: 15px 0;
}
.card.kuis h3, .card.kuis p { padding-left: 15px; }

/* --- Footer --- */
footer {
    background-color: var(--dark-color);
    color: #ecf0f1;
    text-align: center;
    padding: 25px 0;
    margin-top: 20px;
}

/* --- Keyframes untuk Animasi Load --- */
@keyframes fadeInSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================== */
/* --- Bagian RESPONSIVE (Untuk Tablet/Desktop) --- */
/* ============================================== */

@media (min-width: 768px) {
    .container {
        width: 85%;
    }
    .hero-section h1 { font-size: 34px; }

    /* *** INI UNTUK MEMPERBAIKI LAYOUT KARTU ANDA *** */
    .card-grid {
        grid-template-columns: repeat(2, 1fr); 
    }

    /* --- Perbaikan Navigasi Desktop --- */
    
    /* Sembunyikan tombol hamburger */
    .menu-toggle {
        display: none;
    }

    /* Kembalikan .main-nav ke layout normal */
    .main-nav {
        display: block;
        position: static; /* Batalkan 'position: absolute' */
        background: none;
        width: auto; /* Biarkan lebarnya otomatis */
        z-index: 1; 
    }
        
    .main-nav ul {
        display: flex; /* INI KUNCINYA: buat menu jadi horizontal */
    }
        
    .main-nav ul li a {
        color: var(--text-color); /* Kembalikan warna teks */
        border-bottom: none;
        padding: 8px 15px;
        font-weight: 600;
        border-radius: 6px;
    }
    .main-nav ul li a:hover {
        background: #FEF5E7; 
        color: var(--primary-color);
    }
}

@media (min-width: 1024px) {
    /* *** INI UNTUK MEMPERBAIKI LAYOUT KARTU ANDA *** */
    .card-grid {
        grid-template-columns: repeat(3, 1fr); 
    }
}