/* Premium Modern Table of Contents Styles */
.study-toc-container {
    background: linear-gradient(145deg, #ffffff, #fafafa);
    border: 1px solid #eef2f6;
    border-radius: 16px;
    padding: 24px;
    margin: 32px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0,0,0,0.02);
    width: 95%;
    max-width: 100%;
    direction: rtl;
    font-family: 'Inter', 'Outfit', sans-serif;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Subtle left accent border */
.study-toc-container::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color, #794E13);
    border-radius: 0 16px 16px 0;
    opacity: 0.8;
}

.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: 1.15rem;
    font-weight: 700;
    color: var(--primary-color, #794E13);
    display: flex;
    align-items: center;
    gap: 8px;
}

.study-toc-header span i {
    font-size: 1.1rem;
    color: #9E6B20;
}

.study-toc-header > i {
    color: #9E6B20;
    font-size: 1rem;
    transition: transform 0.3s ease;
    background: #FAF3E8;
    padding: 8px;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.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: 20px;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin-top 0.4s 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: 14px;
    position: relative;
    padding-right: 24px;
}

.study-toc-item::before {
    content: '';
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: #cbd5e1;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.study-toc-item:hover::before {
    background: var(--primary-color, #794E13);
    transform: translateY(-50%) scale(1.5);
    box-shadow: 0 0 0 4px rgba(121, 78, 19, 0.1);
}

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

.study-toc-item a:hover {
    color: var(--primary-color, #794E13);
    transform: translateX(-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;
}

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