body {
    margin: 0;
    padding: 0;
}

nav {
    height: 80px;
}

:root {
    --brand-green: #018D68;
    --soft-green: #E9FFEF;
}

.hero-shell {
    background: var(--soft-green);
    border-radius: 28px;
    padding: 16px;
}

.hero-card {
    position: relative;
    border-radius: 22px;
    overflow: hidden;
    min-height: 320px;
    display: flex;
    align-items: center;
    /* gambar background di-set per slide via style background-image */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    box-shadow: 0 8px 28px rgba(0, 0, 0, .08);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    /* gradasi agar teks terbaca di atas gambar */
    background: linear-gradient(90deg, rgba(0, 0, 0, .45) 0%, rgba(0, 0, 0, .20) 50%, rgba(0, 0, 0, 0) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: #fff;
    max-width: 720px;
}

.hero-title {
    font-weight: 800;
    line-height: 1.2;
}

.download-btn {
    background: var(--brand-green);
    border: none;
    border-radius: 999px;
    padding: .9rem 1.4rem;
    font-weight: 700;
}

.download-btn:hover {
    filter: brightness(.95);
}

/* Mobile Navbar Full Width Background */
@media (max-width: 767.98px) {
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100vw;
        margin-left: calc(-50vw + 50%);
        background-color: #f8f9fa;
        border-radius: 0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

    .navbar-nav {
        padding: 1rem 0;
        width: 100%;
    }

    .navbar-nav .nav-item {
        width: 100%;
        text-align: center;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        transition: background-color 0.3s ease;
    }

    .navbar-nav .nav-item:last-child .nav-link {
        border-bottom: none;
    }

    .navbar-nav .nav-link:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }
}

/* Alternatif: Full Screen Mobile Menu */
@media (max-width: 767.98px) {
    .navbar-collapse.full-screen {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: #f8f9fa;
        z-index: 9999;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0;
    }

    .navbar-collapse.full-screen .navbar-nav {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .navbar-collapse.full-screen .nav-item {
        margin: 1rem 0;
    }

    .navbar-collapse.full-screen .nav-link {
        font-size: 1.5rem;
        padding: 1rem 2rem;
        border-radius: 0.5rem;
        transition: all 0.3s ease;
    }

    .navbar-collapse.full-screen .nav-link:hover {
        background-color: #e9ecef;
        transform: translateY(-2px);
    }
}