* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: url('https://smkn4bjm.sch.id/wp-content/uploads/2024/02/WhatsApp-Image-2024-02-12-at-08.31.07-600x600.jpeg') center/cover no-repeat;
            color: #333;
            padding: 10px;
            min-height: 100vh;
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            background-color: rgba(255, 255, 255, 0.5);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            padding: 20px 15px;
            position: relative;
            overflow: hidden;
        }
        
        .header {
            text-align: center;
            padding: 15px 0;
            margin-bottom: 20px;
            border-bottom: 3px solid #1a2a6c;
            position: relative;
        }
        
        .header h1 {
            color: #1a2a6c;
            font-size: 1.8rem;
            margin-bottom: 8px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }
        
        .header h2 {
            color: #b21f1f;
            font-size: 1.4rem;
            font-weight: 600;
        }

        /* Mini button section */
        .mini-section-buttons {
            display: none; /* Sembunyikan di desktop */
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px;
            margin: 15px 0 18px 0;
        }
        .mini-btn {
            background: #1a2a6c;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.09);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.19s, transform 0.13s;
        }
        .mini-btn:hover {
            background: #b21f1f;
            transform: scale(1.09);
        }
        html {
            scroll-behavior: smooth;
        }
        .day-card {
            scroll-margin-top: 85px; /* supaya tidak ketutup header */
        }
        
        .schedule-container {
            display: grid;
            grid-template-columns: 1fr; /* Ubah menjadi 1 kolom seperti di mobile */
            gap: 20px;
        }
        
        .day-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .day-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        
        .day-header {
            padding: 15px;
            text-align: center;
            color: white;
            font-size: 1.4rem;
            font-weight: bold;
        }
        
        .senin .day-header { background: linear-gradient(135deg, #3498db, #1a5276); }
        .selasa .day-header { background: linear-gradient(135deg, #2ecc71, #27ae60); }
        .rabu .day-header { background: linear-gradient(135deg, #e74c3c, #c0392b); }
        .kamis .day-header { background: linear-gradient(135deg, #9b59b6, #8e44ad); }
        .jumat .day-header { background: linear-gradient(135deg, #f39c12, #d35400); }
        
        .subject-list {
            padding: 15px;
            list-style: none;
        }
        
        .subject-item {
            padding: 12px 8px;
            margin-bottom: 8px;
            border-radius: 8px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            transition: background-color 0.2s;
        }
        
        .subject-item.break {
            background-color: #e0e7ef;
            color: #2574a9;
            font-weight: bold;
            justify-content: center;
            font-size: 1.05rem;
        }
        
        .subject-item:hover {
            background-color: #f8f9fa;
        }
        
        .subject-name {
            font-weight: 600;
            color: #2c3e50;
            flex: 1 0 100%;
            margin-bottom: 4px;
        }
        
        .subject-teacher {
            color: #7f8c8d;
            font-size: 0.9rem;
            flex: 1;
        }
        
        .subject-duration {
            background-color: #ecf0f1;
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 600;
            color: #1a2a6c;
            font-size: 0.9rem;
            text-align: right;
        }
        
        .footer {
            text-align: center;
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px solid #eee;
            color: #7f8c8d;
            font-size: 0.85rem;
        }

        .info-jam {
            margin: 0 0 20px 0;
            background: #eaf0fa;
            border-left: 4px solid #1a2a6c;
            padding: 12px 15px;
            border-radius: 7px;
            font-size: 0.95rem;
            line-height: 1.5;
        }

        .mobile-nav {
            display: block; /* Tampilkan di desktop */
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: white;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
            z-index: 1000;
        }
        
        .mobile-nav-buttons {
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
        }
        
        .mobile-nav-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: none;
            border: none;
            font-size: 0.75rem;
            color: #1a2a6c;
            cursor: pointer;
            padding: 5px;
            width: 20%;
        }
        
        .mobile-nav-btn i {
            font-size: 1.2rem;
            margin-bottom: 3px;
        }
        
        .mobile-nav-btn.active {
            color: #b21f1f;
            font-weight: bold;
        }
        
        /* Back to Top Button */
        #backToTopBtn {
            display: none;
            position: fixed;
            bottom: 70px;
            right: 15px;
            z-index: 99;
            background: #1a2a6c;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 45px;
            height: 45px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0,0,0,0.13);
            transition: background 0.18s, transform 0.15s;
            align-items: center;
            justify-content: center;
            padding: 0;
        }
        #backToTopBtn:hover {
            background: #b21f1f;
            transform: scale(1.10);
        }

.hamburger-menu {
    display: flex; /* Tampilkan di desktop */
    position: fixed;
    top: 15px;
    left: 15px;
    background: #1a2a6c;
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    z-index: 1001;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.hamburger-menu.active {
    transform: rotate(90deg);
}

.hamburger-menu i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background: #fff;
    box-shadow: 2px 0 15px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: left 0.3s ease;
    overflow-y: auto;
}

.sidebar.open {
    left: 0;
}

.sidebar-header {
    padding: 20px;
    background: url('https://smkn4bjm.sch.id/wp-content/uploads/2024/11/WhatsApp-Image-2024-11-01-at-08.00.50-600x600.jpeg') center/cover no-repeat;
    color: white;
    text-align: center;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.sidebar a {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s;
}

.sidebar a i {
    margin-right: 12px;
    color: #1a2a6c;
    width: 20px;
    text-align: center;
}

.sidebar a:hover {
    background: #f8f9fa;
    color: #b21f1f;
    padding-left: 25px;
}

.sidebar a:hover i {
    color: #b21f1f;
}

.sidebar-footer {
    padding: 15px;
    text-align: center;
    font-size: 0.8rem;
    color: #7f8c8d;
    border-top: 1px solid #eee;
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
    transition: opacity 0.3s ease;
}

        @media (max-width: 768px) {
            .container {
                padding: 15px 10px;
            }
            
            .header {
                padding: 10px 0;
            }
            
            .header h1 {
                font-size: 1.5rem;
                padding: 0 30px;
            }
            
            .header h2 {
                font-size: 1.2rem;
                padding: 0 20px;
            }
            
            .mini-section-buttons {
                display: none;
            }
            
            .mobile-nav {
                display: block;
            }
            
            .hamburger-menu {
                display: flex;
            }
            
            .subject-name {
                font-size: 1.05rem;
            }
            
            .subject-teacher {
                font-size: 0.85rem;
            }
            
            .subject-duration {
                font-size: 0.85rem;
            }
            
            .info-jam {
                font-size: 0.9rem;
                padding: 10px;
            }
            
            .footer {
                margin-top: 25px;
                font-size: 0.8rem;
            }
            
            #backToTopBtn {
                bottom: 85px;
                right: 17px;
                width: 70px;
                height: 70px;
            }
        }
        
        /* Perubahan untuk desktop - membuat tampilan desktop sama seperti mobile */
        @media (min-width: 769px) {
            .schedule-container {
                grid-template-columns: 1fr; /* Tetap 1 kolom seperti di mobile */
                max-width: 600px; /* Batasi lebar konten */
                margin: 0 auto; /* Pusatkan konten */
            }
            
            .container {
                max-width: 800px; /* Sesuaikan lebar container */
                padding: 30px 20px;
            }
            
            .mini-section-buttons {
                display: none; /* Sembunyikan tombol mini navigasi */
            }
            
            .mobile-nav {
                display: block; /* Tampilkan navigasi mobile di desktop */
            }
            
            .hamburger-menu {
                display: flex; /* Tampilkan hamburger menu di desktop */
            }
            
            /* Sesuaikan jarak bottom untuk back to top button */
            #backToTopBtn {
                bottom: 70px;
            }
        }