/* Base outline container styling */
.outline-sidebar {
    position: sticky;
    top: 20px; /* Default viewport offset - will be overridden by JavaScript */
    width: 250px;
    max-height: calc(100vh - 40px); /* Will be adjusted by JavaScript based on viewport offset */
    overflow-y: auto;
    padding: 16px;
    z-index: 1000;
    align-self: flex-start; /* Important for sticky behavior in flex containers */
}

/* Responsive behavior - hide on mobile */
@media (max-width: 768px) {
    .outline-sidebar {
        position: static;
        width: 100%;
        max-height: none;
        margin: 20px 0;
        border-radius: 4px;
    }
}

/* Outline list styling */
.header-outline {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 14px;
    line-height: 1.4;
}

.header-outline ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Outline items */
.header-outline li {
    margin: 0;
    padding: 0;
}

/* Outline links */
.outline-link {
    display: block;
    padding: 4px 8px;
    color: #6c757d;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s ease;
    word-wrap: break-word;
    hyphens: auto;
}

.outline-link:hover {
    background-color: #dcedfd;
    color: #000000;
}

/* Active state */
.outline-link.active {
    background-color: #e3f2fd;
    color: #1976d2;
    font-weight: 500;
    border-left: 3px solid #1976d2;
    padding-left: 13px;
}

/* Hierarchical indentation */
.outline-level-1 .outline-link {
    font-weight: 600;
    font-size: 15px;
    padding: 6px 8px;
}

.outline-level-2 .outline-link {
    padding-left: 24px;
}

.outline-level-3 .outline-link {
    padding-left: 40px;
    font-size: 13px;
}

.outline-level-4 .outline-link {
    padding-left: 56px;
    font-size: 13px;
}

.outline-level-5 .outline-link {
    padding-left: 72px;
    font-size: 12px;
}

.outline-level-6 .outline-link {
    padding-left: 88px;
    font-size: 12px;
}

/* Adjust active state indentation */
.outline-level-2 .outline-link.active {
    padding-left: 27px;
}

.outline-level-3 .outline-link.active {
    padding-left: 43px;
}

.outline-level-4 .outline-link.active {
    padding-left: 59px;
}

.outline-level-5 .outline-link.active {
    padding-left: 75px;
}

.outline-level-6 .outline-link.active {
    padding-left: 91px;
}

/* Scrollbar styling for webkit browsers */
.outline-sidebar::-webkit-scrollbar {
    width: 6px;
}

.outline-sidebar::-webkit-scrollbar-track {
    background: #f1f3f4;
    border-radius: 3px;
}

.outline-sidebar::-webkit-scrollbar-thumb {
    background: #c1c8cd;
    border-radius: 3px;
}

.outline-sidebar::-webkit-scrollbar-thumb:hover {
    background: #a8b2ba;
}

/* Main content spacing - removed fixed margins for sticky positioning */
.main-content {
    padding: 20px;
}

/* When outline is in a gutter/sidebar layout, ensure proper spacing */
.content-with-outline {
    display: flex;
    gap: 20px;
}

.content-with-outline .main-content {
    flex: 1;
    min-width: 0; /* Prevent flex item from overflowing */
}

.content-with-outline .outline-sidebar {
    flex-shrink: 0; /* Prevent sidebar from shrinking */
}

/* Touch-friendly mobile styling */
@media (max-width: 768px) {
    .outline-link {
        padding: 8px 12px;
        font-size: 16px;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .outline-level-1 .outline-link {
        font-size: 18px;
        padding: 12px;
    }
    
    .outline-level-2 .outline-link {
        padding-left: 24px;
    }
    
    .outline-level-3 .outline-link {
        padding-left: 36px;
    }
    
    /* Reduce deep nesting on mobile */
    .outline-level-4 .outline-link,
    .outline-level-5 .outline-link,
    .outline-level-6 .outline-link {
        padding-left: 48px;
        font-size: 14px;
    }
}