/* Table of Contents Block Frontend Styles */
.table-of-contents-block {
    margin: 2rem 0;
    background-color: var(--toc-bg-color, #2D303E);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Collapsed state styles */
.table-of-contents-block.is-collapsed {
    background-color: transparent;
    overflow: visible;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Smooth scroll for the page */
html {
    scroll-behavior: smooth;
}

/* Offset for fixed headers */
[id] {
    scroll-margin-top: 100px;
}

/* Toggle Button - Dark theme design */
.toc-toggle-button {
    width: 100%;
    padding: 1rem 2rem;
    background-color: #434654;
    border: none;
    color: #FFFFFF;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    overflow: visible;
    max-width: 240px;
;
}

/* Collapsed state - добавляем скос как в промо-баннере */
.table-of-contents-block.is-collapsed {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.table-of-contents-block.is-collapsed .toc-toggle-button {
    transform: skewX(-10deg);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    background-color: #434654;
    border-radius: 8px;
    width: auto;
    max-width: 240px;
    min-width: 200px;
    margin: 0 auto;
    position: relative;
    flex-shrink: 0;
}

/* Декоративные линии по бокам кнопки */
.table-of-contents-block.is-collapsed::before,
.table-of-contents-block.is-collapsed::after {
    content: '';
    flex: 1;
    height: 2px;
    background-color: #1E202A;
    margin: 0 20px;
}

/* Возвращаем текст в нормальное положение для свернутого состояния */
.table-of-contents-block.is-collapsed .toc-toggle-button .button-text {
    transform: skewX(10deg);
    display: inline-block;
}

/* Стрелка для свернутого состояния */
.table-of-contents-block.is-collapsed .toc-toggle-button::after {
    transform: skewX(10deg) rotate(180deg);
}

.toc-toggle-button::after {
    content: '▲';
    font-size: 10px;
    transition: transform 0.3s ease;
}

.toc-toggle-button:hover {
    transform: skewX(-10deg) translateY(-2px) scale(1.02);
}

/* Hover для свернутого состояния */
.table-of-contents-block.is-collapsed .toc-toggle-button:hover {
    transform: skewX(-10deg) translateY(-2px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.toc-toggle-button:active {
    transform: translateY(0);
}

/* Active для свернутого состояния */
.table-of-contents-block.is-collapsed .toc-toggle-button:active {
    transform: skewX(-10deg) translateY(0) scale(1);
}

/* Content container */
.toc-content {
    padding: 2rem;
    background-color: var(--toc-bg-color, #2D303E);
    animation: slideDown 0.3s ease-out;
}

.table-of-contents-block.is-collapsed .toc-content {
    animation: slideUp 0.3s ease-out;
}

/* Title - Hide by default as per design */
.toc-title {
    display: none;
}

/* Links list */
.toc-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-link-item {
    margin-bottom: 0.75rem;
    transition: all 0.3s ease;
}

.toc-link-item.is-nested {
    margin-left: 2rem;
}

.toc-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #FFFFFF;
    text-decoration: none;
    font-size: 16px;
    line-height: 1.6;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

.toc-link:hover {
    color: var(--toc-accent-color, #2CD8B9);
    transform: translateX(5px);
}

.link-indicator {
    color: #FFFFFF;
    font-size: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #FFFFFF;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.link-indicator::before {
    content: '';
}

.toc-link:hover .link-indicator {
    background-color: var(--toc-accent-color, #2CD8B9);
}

/* Nested items styling */
.toc-link-item.is-nested .link-indicator {
    width: 4px;
    height: 4px;
    opacity: 0.7;
}

.toc-link-item.is-nested .toc-link {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    padding: 0.375rem 0;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .table-of-contents-block {
        margin: 1.2rem;
    }
    
    .toc-toggle-button {
        padding: 0.875rem 1.5rem;
        font-size: 12px;
    }
    
    .toc-content {
        padding: 1.5rem;
    }
    
    .toc-link {
        font-size: 14px;
        padding: 0.375rem 0;
    }
    
    .toc-link-item.is-nested {
        margin-left: 1.5rem;
    }
    
    .toc-link-item.is-nested .toc-link {
        font-size: 12px;
    }
}

/* Active link state */
.toc-link.is-active {
    color: var(--toc-accent-color, #2CD8B9);
    font-weight: 600;
}

.toc-link.is-active .link-indicator {
    background-color: var(--toc-accent-color, #2CD8B9);
    box-shadow: 0 0 8px rgba(44, 216, 185, 0.5);
}