body {
    background-color: #1a1a1a !important;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-image: url('https://raw.githubusercontent.com/kajuss8/L4d-hand/main/hand.jpg');
    background-size: 50% auto;
    background-repeat: no-repeat;
    background-position: left center;
    background-attachment: fixed;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    z-index: -1;
}

.card {
    transition: transform 0.3s ease;
    border-width: 2px !important;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.3);
}

.navbar {
    box-shadow: 0 2px 10px rgba(220, 53, 69, 0.5);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

h1 {
    color: #dc3545;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.list-unstyled li {
    position: relative;
    padding-left: 10px;
    border-left: 3px solid #dc3545;
    margin-left: 10px;
    color: #dc3545;
}

.card-title {
    border-bottom: 2px solid #dc3545;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.secret-button {
    cursor: pointer;
    opacity: 0.1;
    transition: opacity 0.3s ease;
    font-size: 1.5rem;
}

.secret-button:hover {
    opacity: 1;
}

@keyframes zombie-shake {
    0% { transform: translate(0, 0); }
    25% { transform: translate(-5px, -5px); }
    50% { transform: translate(5px, 5px); }
    75% { transform: translate(-3px, -3px); }
    100% { transform: translate(0, 0); }
}

.zombie-shake {
    animation: zombie-shake 0.5s ease-in-out;
}