/* Pengaturan Dasar */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: #333;
}

/* Header dan Logo */
.main-header {
    background-color: #ffffff;
    padding: 20px 15px;
    border-bottom: 1px solid #ddd;
    text-align: center;
}

.logo {
    max-width: 220px;
    height: auto;
    transition: max-width 0.3s ease;
}

/* Kontainer Utama Slider */
main {
    width: 100%;
    padding: 20px 0;
}

.slider-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slide {
    flex: 0 0 100%;
    width: 100%;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.slide-image {
    width: 100%;
    padding-bottom: 50%;
    background-size: cover;
    background-position: center;
}

.slide-info {
    padding: 25px 30px;
    text-align: left;
}

.slide-info h2 {
    margin: 0 0 5px 0;
    font-size: 1.8em;
    color: #1c1c1c;
}

.slide-info p {
    margin: 0 0 20px 0;
    font-size: 1.1em;
    color: #555555;
}

.cta-button {
    background-color: #e53935;
    color: #fff;
    padding: 12px 25px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    display: inline-block;
    cursor: pointer;
}

.cta-button:hover {
    background-color: #c62828;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 20px;
    margin-top: 20px;
    color: #888;
}

/* Tampilan Responsif */
@media (max-width: 768px) {
    .logo { max-width: 180px; }
    .slide-image { padding-bottom: 56.25%; }
    .slide-info h2 { font-size: 1.5em; }
    .slide-info p { font-size: 1em; }
}

@media (max-width: 480px) {
    .logo { max-width: 150px; }
    .slide-info { padding: 20px; }
    .slide-info h2 { font-size: 1.3em; }
    .slide-info p { font-size: 0.9em; }
}

/* --- KODE BARU UNTUK POPUP DAN COUNTDOWN --- */

.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    z-index: 1000;
    display: none; /* Disembunyikan secara default */
    justify-content: center;
    align-items: center;
}

.popup-box {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    max-width: 90%;
    width: 400px;
}

.popup-box h2 {
    margin-top: 0;
    color: #333;
}

.popup-box p {
    color: #555;
    font-size: 1.1em;
}

.countdown-timer {
    font-size: 4em;
    font-weight: bold;
    color: #e53935;
    margin: 10px 0;
}

.popup-box .small-text {
    font-size: 0.8em;
    color: #888;
    margin-top: 20px;
    margin-bottom: 0;
}