/* Esconde o conteúdo até o JS carregar */
.sidebar {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar.js-loaded {
    opacity: 1;
}

/* Estrutura de navegação */
.nav-level-0 {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-level-0 > li {
    margin-bottom: 8px;
    padding-bottom: 8px;
}

/* Estilo base para todos os ULs */
.nav-level-0 ul,
.nav-level-1,
.nav-level-2 {
    list-style: none;
    padding-left: 0;
    margin-left: 0.5rem;
}

/* Apenas submenus dentro dos níveis devem começar colapsados */
.submenu-title + ul {
    transition: all 0.3s ease;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    position: relative;
}

/* Quando expandido */
.submenu-title + ul.expanded {
    max-height: 2000px;
    opacity: 1;
    margin-top: 4px;
}

/* Estilo do título do submenu (acordeão) */
.submenu-title {
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    margin: 4px 0;
    background-color: rgba(255, 255, 255, 0.05);
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    -webkit-user-select: none;
    user-select: none;
}

.submenu-title:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(2px);
}

/* Ícone de seta do acordeão */
.submenu-title::after {
    content: "▼";
    margin-left: auto;
    font-size: 0.8em;
    transition: transform 0.3s ease;
    opacity: 0.7;
}

.submenu-title.collapsed::after {
    transform: rotate(-90deg);
}

/* Linhas para a árvore de arquivos */
.nav-level-0 ul li {
    position: relative;
}

.nav-level-0 ul li::before {
    content: "";
    position: absolute;
    left: -0.25rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-level-0 ul li:last-child::before {
    height: 16px;
}

.nav-level-0 ul li::after {
    content: "";
    position: absolute;
    left: -0.25rem;
    top: 14px;
    width: 0.25rem;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Links de navegação */
.nav-level-0 a,
.nav-level-1 a,
.nav-level-2 a {
    display: block;
    padding: 10px 16px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 4px 0;
    position: relative;
    opacity: 0.85;
}

.nav-level-0 a:hover,
.nav-level-1 a:hover,
.nav-level-2 a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    transform: translateX(2px);
    opacity: 1;
}

/* Indicador visual para links */
.nav-level-0 a::before,
.nav-level-1 a::before,
.nav-level-2 a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background-color: var(--primary-color);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.nav-level-0 a:hover::before,
.nav-level-1 a:hover::before,
.nav-level-2 a:hover::before {
    opacity: 1;
}

/* Link ativo */
.nav-level-0 a.active,
.nav-level-1 a.active,
.nav-level-2 a.active {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 1;
}

.nav-level-0 a.active::before,
.nav-level-1 a.active::before,
.nav-level-2 a.active::before {
    opacity: 1;
}

/* Bordas para hierarquia visual */
.nav-level-0 > li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-level-0 > li:last-child {
    border-bottom: none;
}

/* Animações */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.sidebar.js-loaded .nav-level-0 > li {
    animation: fadeIn 0.3s ease forwards;
    opacity: 0;
}

.nav-level-0 > li:nth-child(1) { animation-delay: 0.05s; }
.nav-level-0 > li:nth-child(2) { animation-delay: 0.1s; }
.nav-level-0 > li:nth-child(3) { animation-delay: 0.15s; }
.nav-level-0 > li:nth-child(4) { animation-delay: 0.2s; }
.nav-level-0 > li:nth-child(5) { animation-delay: 0.25s; }
.nav-level-0 > li:nth-child(6) { animation-delay: 0.3s; }
.nav-level-0 > li:nth-child(7) { animation-delay: 0.35s; }
.nav-level-0 > li:nth-child(8) { animation-delay: 0.4s; }
.nav-level-0 > li:nth-child(9) { animation-delay: 0.45s; }
.nav-level-0 > li:nth-child(10) { animation-delay: 0.5s; }

/* Níveis aninhados */
.nav-level-1 > li,
.nav-level-2 > li {
    margin-bottom: 3px;
}

.nav-level-1 a {
    font-size: 0.95em;
    padding: 8px 16px;
}

.nav-level-2 a {
    font-size: 0.9em;
    padding: 6px 16px;
}

/* Mobile */
@media (max-width: 768px) {
    /* Ajustes para touch */
    .submenu-title {
        padding: 12px 15px;
    }
    
    .nav-level-0 a,
    .nav-level-1 a,
    .nav-level-2 a {
        padding: 10px 15px;
    }
    
    /* Melhora a área de toque */
    .nav-level-0 > li {
        margin-bottom: 10px;
        padding-bottom: 10px;
    }
    
    /* Exibir botão hambúrguer apenas no mobile */
    .menu-toggle {
        display: flex !important;
    }
    
    /* Garantir que a sidebar comece escondida no mobile */
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
}

/* Search box */
.search-box {
    margin-bottom: 20px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 16px;
    padding-left: 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(184, 45, 51, 0.15);
    transform: translateY(-1px);
}

.search-box::before {
    content: "🔍";
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.6;
}