/* =============================================== */
/* ===== 플로팅 목차 스타일 ===== */
/* =============================================== */

/* PC 화면 스타일 (1201px 이상) */
@media (min-width: 1201px) {
    #toc-toggle-button {
        display: none;
    }

    #side-nav {
        position: fixed;
        top: 120px;
        left: 40px;
        padding: 15px 20px;
        z-index: 999;
        background-color: rgba(255, 255, 255, 0.7);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        opacity: 0.7;
        transition: opacity 0.3s ease;
    }

    #side-nav:hover {
        opacity: 1;
    }
}

/* 모바일 화면 스타일 (1200px 이하) */
@media (max-width: 1200px) {
    #floating-toc-container {
        position: fixed;
        top: 100px;
        left: 20px;
        z-index: 1001;
    }

    #toc-toggle-button {
        width: 45px;
        height: 45px;
        background-color: #fff;
        border: 1px solid #eee;
        border-radius: 50%;
        box-shadow: 0 2px 10px rgba(0,0,0,0.15);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: #333;
    }
    
    #side-nav {
        display: none;
        padding: 15px 20px;
        margin-top: 10px;
        background-color: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.3);
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    
    #floating-toc-container.is-open #side-nav {
        display: block;
    }
}

/* 공통 스타일 */
#side-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#side-nav ul li a {
    display: block;
    padding: 8px 10px;
    margin-bottom: 5px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    color: #555;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
}

#side-nav ul li a:hover {
    color: #000;
    background-color: rgba(255, 255, 255, 0.5);
}

#side-nav ul li a.active {
    color: #007bff;
    font-weight: 700;
    border-left: 3px solid #007bff;
}