.com-bibliotecafectrans-documento {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: Arial, sans-serif;
}

.documento-header {
    text-align: center;
    margin-bottom: 30px;
}

.documento-header h1 {
    font-family: Arial, sans-serif;
    font-size: 18px;
    font-weight: bold;
    margin: 0 0 10px;
}

.documento-header p {
    font-size: 14px;
    color: #555;
}

.pdf-layout {
    display: flex;
    gap: 20px;
    flex-direction: row;
}

.thumbnails-sidebar {
    flex: 0 0 120px;
    order: 2;
    max-height: 700px;
    overflow-y: auto;
    background: #f5f5f5;
    border-radius: 8px;
    padding: 10px;
}

.thumbnails-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.thumbnail {
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 4px;
    width: 100%;
    height: auto;
}

.thumbnail:hover {
    border-color: #3498db;
}

.thumbnail.active {
    border-color: #e74c3c;
}

.viewer-main {
    flex: 1;
    order: 1;
    text-align: center;
    background: #e9ecef;
    padding: 20px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#pdf-canvas {
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    max-width: 100%;
    height: auto;
    background: white;
}

/* Barra superior */
.top-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    padding: 10px;
    background: #f0f0f0;
    border-radius: 50px;
    align-items: center;
}

.top-toolbar button {
    background: #3498db;
    border: none;
    color: white;
    padding: 6px 12px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    font-size: 13px;
    transition: background 0.2s;
}

.top-toolbar button:hover {
    background: #2980b9;
}

.page-indicator {
    background: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: bold;
    color: #333;
}

#zoom-level {
    background: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: bold;
    min-width: 50px;
    display: inline-block;
}

/* Barra inferior unificada (todos os botões em ícones) */
.bottom-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding: 8px 20px;
    background: #f8f9fa;
    border-radius: 50px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.icon-btn {
    background: #2c3e50;
    border: none;
    color: white;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: #1a252f;
    transform: scale(1.05);
}

.social-icons {
    display: flex;
    gap: 8px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background-color: #333;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.2rem;
    transition: transform 0.2s, background-color 0.2s;
}

.social-icon:hover {
    transform: scale(1.1);
}

/* Cores nativas das redes sociais (com !important para garantir) */
.social-icon.facebook { background-color: #3b5998 !important; }
.social-icon.instagram { background: radial-gradient(circle at 30% 110%, #fdf497, #fdf497, #fd5949, #d6249f, #285aeb) !important; }
.social-icon.telegram { background-color: #0088cc !important; }
.social-icon.whatsapp { background-color: #25D366 !important; }
.social-icon.twitter { background-color: #000000 !important; }
@media (max-width: 768px) {

    .top-toolbar {
        border-radius: 20px;
        gap: 5px;
    }

    .top-toolbar button {
        padding: 4px 10px;
        font-size: 11px;
    }

    .bottom-bar {
        gap: 8px;
        padding: 6px 12px;
        border-radius: 40px;
    }

    .icon-btn, .social-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .pdf-layout {
        flex-direction: column;
    }

    .thumbnails-sidebar {
        order: 2;
        flex: auto;
        max-height: 120px;
        overflow-x: auto;
    }

    .thumbnails-list {
        flex-direction: row;
    }

    .viewer-main {
        order: 1;
    }

    .thumbnail {
        width: 80px;
    }
}