:root {
    --bs-primary: #2c3e50;
    --bs-secondary: #34495e;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.navbar-brand {
    font-weight: 700;
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.book-cover {
    max-height: 400px;
    object-fit: contain;
}

.rights-badge {
    font-size: 0.75rem;
}

.rights-public { background-color: #27ae60; }
.rights-licensed { background-color: #3498db; }
.rights-copyrighted { background-color: #e74c3c; }
.rights-unknown { background-color: #f39c12; }
.rights-pending { background-color: #95a5a6; }

footer {
    background-color: var(--bs-primary);
    color: white;
    padding: 2rem 0;
    margin-top: auto;
}