/* ===== SIDEBAR NAVIGATION STYLES ===== */

/* Sidebar container */
.sidebar {
    height: calc(100vh - 70px);
    overflow-y: auto;
    position: sticky;
    top: 70px;
    background-color: var(--sidebar-bg) !important;
    border-right-color: var(--border-color);
}

/* Sidebar menu */
.sidebar-menu {
    padding: 1rem;
}

.sidebar-menu .nav-link {
    color: var(--text-primary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-menu .nav-link:hover {
    color: var(--link-color);
    background-color: var(--bg-secondary);
}

/* 홈 사이드바의 파일 링크도 동일한 활성 스타일 적용 */
.sidebar-menu .file-link.active {
    background-color: #3b82f6 !important;
    color: white !important;
    font-weight: 600;
    border-left: 4px solid #1d4ed8;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    border-radius: 6px;
    margin: 2px 0;
}

.sidebar-menu .file-link.active .bi-file-text {
    color: white !important;
}

.sidebar-menu .file-link.active .text-muted {
    color: rgba(255, 255, 255, 0.9) !important;
}

.sidebar-menu .file-link.active:hover {
    background-color: #2563eb !important;
    color: white !important;
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

/* Tree navigation styles */
.tree-nav .nav-link {
    padding: 0.375rem 0.75rem;
    border: none;
    transition: all 0.2s ease;
    border-radius: 4px;
    margin-bottom: 2px;
}

.tree-nav .folder-link {
    font-weight: 500;
    color: var(--text-primary);
}

.tree-nav .folder-link:hover {
    background-color: var(--bg-secondary);
    color: var(--link-color);
}

.tree-nav .folder-link.active-path {
    background-color: var(--bg-tertiary);
    color: var(--link-color);
    font-weight: 600;
    border-left: 3px solid var(--link-color);
}

.tree-nav .file-link {
    color: var(--text-secondary);
    font-weight: 400;
}

.tree-nav .file-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--link-color);
}

.tree-nav .file-link.active {
    background-color: #3b82f6 !important; /* 고정된 블루 색상 */
    color: white !important;
    font-weight: 600;
    border-left: 4px solid #1d4ed8; /* 더 진한 블루 테두리 */
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3); /* 블루 계열 그림자 */
    border-radius: 6px;
    margin: 2px 0;
}

.tree-nav .file-link.active .bi-file-text {
    color: white !important;
}

.tree-nav .file-link.active .text-muted {
    color: rgba(255, 255, 255, 0.9) !important;
}

.tree-nav .file-link.active:hover {
    background-color: #2563eb !important; /* 호버 시 더 진한 블루 */
    color: white !important;
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.tree-nav .toggle-icon {
    transition: transform 0.2s ease;
    font-size: 0.875rem;
}

.tree-nav .folder-icon {
    color: #ffc107;
}

.tree-nav .folder-icon.active-path {
    color: #ff9800;
}

.tree-nav .collapse {
    border-left: 2px solid var(--border-color);
    margin-left: 1rem;
}

.tree-nav .nav-item {
    border: none;
}

/* ===== SIDEBAR TOGGLE FUNCTIONALITY ===== */

/* Sidebar toggle button */
#sidebar-toggle {
    border: none;
    background: transparent;
    color: var(--text-primary);
    padding: 0.375rem 0.5rem;
    transition: all 0.2s ease;
}

#sidebar-toggle:hover {
    background-color: var(--bg-secondary) !important;
    color: var(--link-color);
}

#sidebar-toggle:focus {
    box-shadow: none;
    background-color: var(--bg-secondary);
}

/* Sidebar states */
.sidebar {
    transform: translateX(0);
    /* transition은 JavaScript에서 동적으로 설정 */
}

.sidebar.collapsed {
    transform: translateX(-100%);
    width: 0 !important;
    min-width: 0 !important;
    border-right: none;
    overflow: hidden;
}

/* Content area adjustments when sidebar is collapsed */
.content-area {
    /* transition은 JavaScript에서 동적으로 설정 */
}

.sidebar.collapsed ~ .content-area {
    margin-left: 0;
}

/* For larger screens, adjust the grid layout when collapsed */
@media (min-width: 768px) {
    .container-main {
        position: relative;
    }
    
    .sidebar.collapsed {
        position: absolute;
        left: -100%;
        z-index: -1;
    }
    
    .sidebar.collapsed ~ .content-area {
        flex: 0 0 75%;
        max-width: 75%;
    }
    
    .sidebar.collapsed ~ .content-area ~ .toc {
        flex: 0 0 25%;
        max-width: 25%;
    }
}

@media (min-width: 992px) {
    .sidebar.collapsed ~ .content-area {
        flex: 0 0 83.333333%;
        max-width: 83.333333%;
    }
    
    .sidebar.collapsed ~ .content-area ~ .toc {
        flex: 0 0 16.666667%;
        max-width: 16.666667%;
    }
}

/* Mobile responsive - sidebar overlay on small screens */
@media (max-width: 767.98px) {
    .sidebar {
        position: fixed;
        top: 70px;
        left: 0;
        z-index: 1040;
        width: 280px !important;
        max-width: 280px;
        box-shadow: var(--shadow-md);
    }
    
    .sidebar.collapsed {
        transform: translateX(-100%);
    }
    
    /* Content should not adjust on mobile */
    .sidebar.collapsed ~ .content-area {
        margin-left: 0;
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    /* Backdrop for mobile sidebar */
    .sidebar-backdrop {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100vw;
        height: calc(100vh - 70px);
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 1039;
        opacity: 0;
        visibility: hidden;
        /* transition은 JavaScript에서 동적으로 설정 */
    }
    
    .sidebar-backdrop.show {
        opacity: 1;
        visibility: visible;
    }
}