main {
    font-family: Arial, sans-serif;
    background-color: #f3f3f3;
    padding: 20px;
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container {
    max-width: 800px;  /* Adjusted from 100% for better readability */
    width: 100%;
    background: white;
    padding: 20px;
    margin: 0 auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    text-align: center;  /* Center all text content */
}
.container {
    padding: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.toggle-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 0 10px;
}

.toggle-group {
    display: flex;
    align-items: center;
    gap: 15px; /* Space between switch and label */
}

.toggle-label {
    font-size: 1em;
    color: #333;
}

.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #4CAF50;
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.gemini-trans {
    display: none;
    color: gray;
    margin-top: 5px;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 15px;
    }
    .toggle-container {
        flex-direction: column;
        gap: 15px;
    }
    h2 {
        margin: 0;
        font-size: 1.5em;
    }
}


#toc {
    position: sticky;
    top: 0px;
    background: #f9f9f9;
    padding: 15px;
    margin-left: -20px;
    margin-right: -20px;
    border-radius: 5px;
    border: 1px solid #ddd;
    max-height: 80vh; /* Limit height */
    overflow-y: auto; /* Make scrollable */
    text-align: left;
}

#toc h2 {
    margin: 0;
    font-size: 1.2em;
    color: #333;
    cursor: pointer;
    user-select: none;
}

#toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#toc li {
    margin: 8px 0;
}

#toc a {
    text-decoration: none;
    color: #0066cc;
}

#toc a:hover {
    text-decoration: underline;
}

.level-1 { padding-left: 0; }
.level-2 { padding-left: 20px; }
.level-3 { padding-left: 40px; }
.level-4 { padding-left: 60px; }
.level-5 { padding-left: 80px; }
.level-6 { padding-left: 100px; }

.toc-content {
    display: none;
}

.toggle-btn::before {
    content: '▶ ';
    display: inline-block;
    transition: transform 0.2s;
}

.toggle-btn.open::before {
    transform: rotate(90deg);
}

.collapsible::before {
    content: '▶ ';
    cursor: pointer;
    display: inline-block;
    transition: transform 0.2s;
    width: 20px;
}

.collapsible.open::before {
    transform: rotate(90deg);
}

.collapsed {
    display: none;
}

/* M E N U */
.dropdown-menu {
    min-width: 250px;
}
.dropdown-submenu {
    position: relative;
}
.dropdown-submenu .dropdown-menu {
    top: 0;
    left: 100%;
    margin-left: .1rem;
}
@media (max-width: 991.98px) {
    .dropdown-submenu .dropdown-menu {
        left: 0;
        position: relative;
        margin-left: 1rem;
    }
}