/* --- EASTER EGG: VINTAGE MODE --- */
body.vintage-mode {
    filter: sepia(100%) contrast(1.2) brightness(0.9) grayscale(0.2);
    background-image: url('https://www.transparenttextures.com/patterns/aged-paper.png');
}

/* Ubah font jadi serif ala koran */
body.vintage-mode * {
    font-family: 'Times New Roman', Times, serif !important;
    color: #2b2b2b !important;
    text-shadow: none !important;
    box-shadow: none !important;
}

/* Sembunyikan elemen modern yang tidak cocok */
body.vintage-mode .footer-wave,
body.vintage-mode .join-bg-deco,
body.vintage-mode .about-blob,
body.vintage-mode .mount1,
body.vintage-mode .mount2,
body.vintage-mode .bush1,
body.vintage-mode .bush2,
body.vintage-mode .leaf1,
body.vintage-mode .leaf2 {
    display: none !important;
}

body.vintage-mode header.sticky {
    background: rgba(255, 248, 220, 0.95) !important;
    border-bottom: 2px solid #000;
}

body.vintage-mode .btn-news,
body.vintage-mode .btn-join,
body.vintage-mode .btn-detail-org,
body.vintage-mode .category-badge {
    background: #000 !important;
    color: #fff !important;
    border-radius: 0 !important;
    box-shadow: 5px 5px 0px rgba(0, 0, 0, 0.2) !important;
}

/* Overlay Noise Grainy */
.vintage-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    background-image: url("https://upload.wikimedia.org/wikipedia/commons/7/76/Noise_overlay.png");
    mix-blend-mode: overlay;
    transition: opacity 1s;
}

body.vintage-mode .vintage-overlay {
    opacity: 0.3;
}