:root {
            --ums-green: #006837;
            --ums-light-green: #4CAF50;
            --ums-gold: #FFD700;
            --ums-light: #f8f9fa;
            --ums-red: #dc3545;
            --ums-blue: #007bff;
            --ums-orange: #fd7e14;
            --ums-dark: #112E81;
            --ums-primary: #4647AE;
            --ums-sky: #4382DF;
            --ums-soft: #AACCD6;
            --strip-color: #F5F5F5; /* warna selingan abu-abu */
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Open Sans', sans-serif;
            color: var(--ums-dark);
            line-height: 1.6;
            background-color: #f9f9f9;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            color: var(--ums-green);
        }
        
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        
        .navbar-brand span {
            color: var(--ums-green);
        }
        
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-link:hover {
            color: var(--ums-light-green) !important;
        }
        
        /* Jumbotron slider */
        .jumbotron {
            background: linear-gradient(rgba(47, 49, 132, 0.85), rgba(124, 125, 178, 0.9)), url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?ixlib=rb-4.0.3&auto=format&fit=crop&w=1470&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            margin-bottom: 0;
        }
        
        /* ========= SELANG-SELING SECTION ========= */
        .section-strip {
            padding: 70px 0;
            transition: all 0.2s;
        }
        /* Ganjil (1,3,5,...) -> background putih */
        .section-strip:nth-child(odd) {
            background-color: white;
        }
        /* Genap (2,4,6,...) -> background #DDDDDD */
        .section-strip:nth-child(even) {
            background-color: var(--strip-color);
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--ums-dark);
            position: relative;
            padding-bottom: 12px;
            margin-bottom: 40px;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 70px;
            height: 4px;
            background: var(--ums-primary);
            border-radius: 4px;
        }
        
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        
        /* Card styles */
        .card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        .card:hover {
            transform: translateY(-10px);
        }
        .news-card .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .activity-card .card-img-top {
            height: 180px;
            object-fit: cover;
        }
        .announcement-card {
            border-left: 5px solid var(--ums-green);
            transition: all 0.3s;
        }
        .announcement-card.important { border-left-color: var(--ums-red); }
        .announcement-card.info { border-left-color: var(--ums-blue); }
        .announcement-card.warning { border-left-color: var(--ums-orange); }
        .announcement-card:hover {
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            border-left-width: 8px;
        }
        .announcement-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 24px;
            color: white;
        }
        .icon-important { background-color: var(--ums-red); }
        .icon-info { background-color: var(--ums-blue); }
        .icon-warning { background-color: var(--ums-orange); }
        .icon-normal { background-color: var(--ums-green); }
        
        /* Alumni slider (pengurus) */
        .alumni-slider img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 50%;
            border: 3px solid var(--ums-light-green);
        }
        .testimonial-card {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            height: 100%;
        }
        .testimonial-card i {
            color: var(--ums-gold);
            font-size: 24px;
            margin-bottom: 15px;
        }
        .contact-info i {
            color: var(--ums-light-green);
            font-size: 24px;
            margin-right: 10px;
        }
        .footer {
            background-color: #383434;
            color: white;
        }
        .footer a {
            color: var(--ums-gold);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover { color: white; }
        
        .btn-ums {
            background-color: var(--ums-green);
            color: white;
            padding: 10px 25px;
            border-radius: 30px;
            transition: background-color 0.3s;
        }
        .btn-ums:hover {
            background-color: var(--ums-light-green);
            color: white;
        }
        
        /* Galeri card style */
        .galeri-card {
            cursor: pointer;
            transition: all 0.3s ease;
            border-radius: 1rem;
            overflow: hidden;
            background: white;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }
        .galeri-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 30px -8px rgba(17,46,129,0.3);
        }
        .galeri-card img {
            transition: transform 0.4s ease;
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }
        .galeri-card:hover img { transform: scale(1.02); }
        .galeri-caption {
            padding: 12px;
            text-align: center;
            background: white;
        }
        .galeri-caption h6 { color: #112E81; font-weight: 700; }
        
        .carousel-control-prev-icon, .carousel-control-next-icon {
            display: inline-block;
            width: 2rem;
            height: 2rem;
            background-repeat: no-repeat;
            background-position: center;
            background-size: 100% 100%;
        }
        .carousel-control-prev, .carousel-control-next {
            opacity: 0.9;
            width: 8%;
        }
        .carousel-control-prev:hover .carousel-control-prev-icon,
        .carousel-control-next:hover .carousel-control-next-icon {
            background-color: rgba(0,0,0,0.8) !important;
            transform: scale(1.1);
        }
        @media (max-width: 768px) {
            .carousel-control-prev-icon, .carousel-control-next-icon {
                width: 1.5rem;
                height: 1.5rem;
                padding: 1rem !important;
            }
        }