/* ========================================
   모바일 메뉴 오버레이 - 성능 최적화
   ======================================== */

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--quantum-bg-overlay);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    will-change: opacity;
    backface-visibility: hidden;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   모바일 메뉴 - 성능 최적화
   ======================================== */

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100%;
    background: var(--quantum-bg-primary);
    z-index: 300;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), visibility 0s 0.3s;
    box-shadow: none;
    will-change: transform;
    backface-visibility: hidden;
    transform: translateX(100%);
    visibility: hidden;
}

.mobile-menu.active {
    transform: translateX(0);
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.15);
    visibility: visible;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), visibility 0s 0s;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 56px;
    border-bottom: 1px solid var(--quantum-border-light);
}

.mobile-menu-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--quantum-text-primary);
    letter-spacing: -0.01em;
}

.mobile-menu-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.15s ease;
    position: relative;
}

.mobile-menu-close:hover {
    background: var(--quantum-bg-secondary);
}

.mobile-menu-close [data-lucide] {
    width: 24px;
    height: 24px;
    color: var(--quantum-text-primary);
}

.mobile-menu-nav {
    padding: 8px 0;
}

.mobile-menu-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu-nav li {
    margin: 2px 8px;
}

/* 메뉴 링크 공통 스타일 */
.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    color: var(--quantum-text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    font-family: inherit;
    border: none;
    background: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s ease;
    text-align: left;
}

.mobile-menu-link:hover {
    background: var(--quantum-bg-secondary);
}

.mobile-menu-link:active {
    background: var(--quantum-bg-tertiary);
}

/* Lucide 아이콘 스타일 */
.mobile-menu-link [data-lucide],
.mobile-category-toggle [data-lucide] {
    width: 20px;
    height: 20px;
    color: var(--quantum-text-tertiary);
    transition: color 0.15s ease;
    flex-shrink: 0;
}

.mobile-menu-link:hover [data-lucide] {
    color: var(--quantum-text-secondary);
}

/* 화살표 아이콘 */
.mobile-category-toggle [data-lucide="chevron-down"] {
    margin-left: auto;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.15s ease;
}

.mobile-category-toggle.active [data-lucide="chevron-down"] {
    transform: rotate(180deg);
}

.mobile-category-toggle.active [data-lucide="folder"] {
    color: var(--quantum-point);
}

/* ========================================
   모바일 카테고리 아코디언
   ======================================== */

.mobile-category-item {
    margin: 2px 8px;
}

/* 카테고리 토글 버튼 - mobile-menu-link 스타일 상속 */
.mobile-category-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    background: none;
    border: none;
    color: var(--quantum-text-primary);
    font-weight: 500;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.15s ease;
    text-align: left;
}

.mobile-category-toggle:hover {
    background: var(--quantum-bg-secondary);
}

.mobile-category-toggle.active {
    background: var(--quantum-bg-secondary);
}

.mobile-category-toggle span {
    flex: 1;
}

/* 카테고리 목록 컨테이너 */
.mobile-category-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 0 8px;
}

.mobile-category-list.expanded {
    max-height: 60vh;
    overflow-y: auto;
}

/* 카테고리 리스트 내 li 마진 리셋 (.mobile-menu-nav li 오버라이드) */
.mobile-category-list li {
    margin: 0;
}

/* 티스토리 카테고리 스타일 오버라이드 */
.mobile-category-list .tt_category {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-category-list .tt_category > li {
    border-bottom: none;
}

.mobile-category-list .link_tit {
    display: none;
}

.mobile-category-list .category_list {
    list-style: none;
    margin: 0;
    padding: 4px 0;
}

.mobile-category-list .category_list > li {
    display: flex;
    flex-direction: column;
    position: relative;
    border-bottom: none;
}

/* 메인 카테고리 아이템 */
.mobile-category-list .link_item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px 8px 16px;
    margin: 2px 0;
    text-decoration: none;
    color: var(--quantum-text-primary);
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    transition: background-color 0.15s ease, color 0.15s ease;
    position: relative;
}

.mobile-category-list .link_item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--quantum-point);
    border-radius: 2px;
    transition: height 0.15s ease;
}

.mobile-category-list .link_item:hover {
    background: var(--quantum-bg-secondary);
}

.mobile-category-list .link_item:hover::before {
    height: 16px;
}

.mobile-category-list .link_item:active {
    background: var(--quantum-bg-tertiary);
}

.mobile-category-list .link_item button {
    display: none;
}

/* 서브카테고리 리스트 */
.mobile-category-list .sub_category_list {
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
    max-height: none !important;
    overflow: visible !important;
}

/* 서브카테고리 좌측 가이드라인 */
.mobile-category-list .sub_category_list::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 4px;
    bottom: 4px;
    width: 1px;
    background: var(--quantum-border-light);
}

.mobile-category-list .sub_category_list > li {
    display: flex;
    flex-direction: column;
    border-bottom: none;
}

/* 서브카테고리 아이템 */
.mobile-category-list .link_sub_item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px 6px 32px;
    margin: 1px 0;
    text-decoration: none;
    color: var(--quantum-text-secondary);
    font-size: 13px;
    font-weight: 400;
    border-radius: 6px;
    transition: background-color 0.15s ease, color 0.15s ease;
    position: relative;
}

/* 서브카테고리 연결선 */
.mobile-category-list .link_sub_item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    width: 8px;
    height: 1px;
    background: var(--quantum-border-light);
}

.mobile-category-list .link_sub_item:hover {
    background: var(--quantum-bg-secondary);
    color: var(--quantum-text-primary);
}

.mobile-category-list .link_sub_item:active {
    background: var(--quantum-bg-tertiary);
}

/* 카운트 배지 - 미니멀 스타일 (specificity 높임) */
.mobile-category-list .link_item .c_cnt,
.mobile-category-list .link_sub_item .c_cnt {
    position: static;
    font-size: 11px;
    color: var(--quantum-text-tertiary);
    font-weight: 500;
    background: transparent;
    padding: 0;
    margin-left: auto;
}

/* 호버 시 배지 색상 변경 */
.mobile-category-list .link_item:hover .c_cnt,
.mobile-category-list .link_sub_item:hover .c_cnt {
    color: var(--quantum-text-secondary);
}

/* ========================================
   모바일 메뉴 반응형
   ======================================== */

/* 소형 모바일 (480px 이하) */
@media (max-width: 480px) {
    .mobile-menu {
        width: 85vw;
        max-width: 320px;
    }
}