.banner-slider {
    position: relative;
    width: 100%;
    height: 420px;
    overflow: hidden;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.7s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}

.slide-content {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    text-align: center;
    z-index: 2;
    max-width: 90%;
}

.slide-content h1 {
    font-size: 32px;
    font-weight: bold;
}

.slide-content p {
    font-size: 18px;
    margin-top: 8px;
}

/* tombol */
.nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.6);
    border: none;
    font-size: 28px;
    padding: 6px 14px;
    cursor: pointer;
    z-index: 3;
}

.prev { left: 15px; }
.next { right: 15px; }

.nav:hover {
    background: white;
}