/* Modern Table of Contents Styles */
.study-toc-container {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 24px;
    margin: 32px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    width: 95%;
    max-width: 100%;
    direction: rtl;
    font-family: 'Inter', 'Outfit', sans-serif;
    transition: all 0.3s ease;
}

.study-toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    cursor: pointer;
}

.study-toc-container.collapsed .study-toc-header {
    margin-bottom: 0;
    border-bottom: none;
}

.study-toc-header span {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    color: var(--primary-color, #d32f2f);
}

.study-toc-header i {
    color: var(--primary-color, #d32f2f);
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.study-toc-container.collapsed .study-toc-header i {
    transform: rotate(-180deg);
}

.study-toc-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 0 0;
    border-top: 1px solid #f1f5f9;
    padding-top: 15px;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
    overflow: hidden;
}

.study-toc-container.collapsed .study-toc-list {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.study-toc-item {
    margin-bottom: 12px;
    position: relative;
    padding-right: 20px;
}

.study-toc-item::before {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: #cbd5e1;
    border-radius: 50%;
    transition: background 0.3s ease, transform 0.3s ease;
}

.study-toc-item:hover::before {
    background: var(--primary-color, #d32f2f);
    transform: translateY(-50%) scale(1.4);
}

.study-toc-item a {
    text-decoration: none;
    color: #475569;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease, margin-right 0.3s ease;
    display: block;
}

.study-toc-item a:hover {
    color: var(--primary-color, #d32f2f);
    margin-right: 5px;
}

.study-toc-item-h3 {
    margin-right: 20px;
    font-size: 0.9rem;
}

.study-toc-item-h3::before {
    width: 4px;
    height: 4px;
    background: #e2e8f0;
}

/* Scroll padding for anchors */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

/* Glassmorphism variant */
.modern-toc {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
    .study-toc-container {
        max-width: 100%;
        margin: 20px 0;
    }
}