body {
    background: #111;
    color: #212529;
    font-family: 'Segoe UI', 'Arial', sans-serif;
    margin: 0;
    min-height: 100vh;
    position: relative;
}
.bg-caver {
    background: url('../images/bg-caver.jpg') no-repeat left bottom fixed;
    background-size: cover;
    position: fixed;
    top: 0; left: 0; height: 100%; width: 100vw;
    z-index: 0;
    opacity: 0.64;
}

.main-container {
    z-index: 1;
    position: relative;
    background: #fff;
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
    border-radius: 12px;
    margin-top: 24px;
}

.header-images img {
    height: 82px;
    object-fit: cover;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

nav.nav-tabs .nav-link {
    color: #212529;
    font-weight: 500;
    font-size: 1rem;
    border: none;
}
nav.nav-tabs .nav-link.active, nav.nav-tabs .nav-link:hover {
    color: #d02121;
    background: #f7e3c6;
}

.side-bar {
    border-right: 1px solid #eee;
    background: #fffbe9;
    min-height: 100%;
    position: relative;
}

.vertical-text {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 1.1rem;
    font-weight: bold;
    letter-spacing: 0.12em;
    color: #222;
    margin-top: 22px;
    margin-bottom: 15px;
}

.side-link {
    display: block;
    color: #c00909;
    text-decoration: none;
    margin-bottom: 12px;
    font-weight: 500;
    transition: color 0.2s;
}
.side-link:hover {
    color: #eb8422;
}

h1, h2 {
    font-family: inherit;
    font-weight: bold;
}

article {
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 1px 12px rgba(0,0,0,0.05);
    padding: 16px 12px;
}

.text-danger {
    color: #c40412 !important;
}

footer {
    font-size: 0.95rem;
    background: #fff;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

@media (max-width: 991px) {
    .side-bar {
        display: none;
    }
    main.col-md-10 {
        width: 100%;
    }
}
.gallery-list .gallery-thumb {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid #eee;
    background: #f8f8f8;
}
@media (max-width: 991px) {
    .gallery-list .gallery-thumb {
        width: 36px;
        height: 36px;
    }
}