/* Table of Contents by studyquell.com - Enhanced Version */
.toc {
    background-color: #ffffff;
    border: 1px solid #e1e4e8;
    border-radius: 8px; /* Rounded corners */
    padding: 15px 20px;
    display: table;
    line-height: 1.7em;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); /* Soft shadow */
    font-family: 'Segoe UI', Roboto, sans-serif;
    min-width: 250px;
    margin: 20px 0;
}

.toc h2 {
    display: inline-block;
    margin: 0 15px 0 0;
    font-size: 1.2rem;
    color: #2c3e50;
    font-weight: 600;
}

.toc a {
    text-decoration: none;
    color: #34495e;
    transition: all 0.2s ease; /* Smooth hover effect */
}

.toc a:hover {
    text-decoration: none;
    color: #007bff; /* Professional Blue */
    padding-left: 5px; /* Subtle slide effect */
}

.toc ul {
    list-style-type: none;
    margin: 10px 0 0 0;
    padding: 0;
    text-align: left;
}

.toc ul li {
    margin-bottom: 5px;
}

.toc ul li a {
    margin-left: 0.5em;
    font-size: 0.95rem;
}

.toc ul li ul {
    margin-left: 1.5em;
    border-left: 2px solid #f0f0f0; /* Side line for nested items */
    padding-left: 10px;
}

.toctogglelabel {
    cursor: pointer;
    color: #007bff;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Checkbox and Toggle Logic */
:not(:checked) > .toctoggle {
    display: inline !important;
    position: absolute;
    opacity: 0;
}

:not(:checked) > .toctogglespan:before { content: '['; color: #aaa; }
:not(:checked) > .toctogglespan:after { content: ']'; color: #aaa; }

.toctoggle:not(:checked) + .toctitle .toctogglelabel:after {
    content: 'Hide';
}

.toctoggle:checked + .toctitle .toctogglelabel:after {
    content: 'Show';
}

.toctoggle:checked ~ ul {
    display: none;
}

:target::before {
    content: '';
    display: block;
    height: 20px;
    margin-top: -20px;
    visibility: hidden;
}