/* DevShare — Google Drive 스타일 */
:root {
    --ds-primary: #1a73e8;
    --ds-primary-hover: #1765cc;
    --ds-primary-light: #e8f0fe;
    --ds-bg: #ffffff;
    --ds-bg-soft: #f8f9fa;
    --ds-border: #e5e7eb;
    --ds-text: #202124;
    --ds-text-muted: #5f6368;
    --ds-hover: #f1f3f4;
    --ds-selected: #e8f0fe;
    --ds-shadow-sm: 0 1px 2px rgba(60,64,67,.08), 0 1px 3px rgba(60,64,67,.06);
    --ds-shadow-md: 0 2px 6px rgba(60,64,67,.10), 0 1px 2px rgba(60,64,67,.08);
    --ds-shadow-lg: 0 4px 20px rgba(60,64,67,.15);
}

body {
    background: #fff;
    color: var(--ds-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Roboto, Arial, sans-serif;
}

.ds-navbar { height: 56px; }
.ds-main { min-height: calc(100vh - 56px); background: #fff; }

/* ======================= Explorer 레이아웃 ======================= */
.ds-explorer {
    display: grid;
    grid-template-columns: 220px 1fr;
    min-height: calc(100vh - 56px);
    background: #fff;
}

.ds-sidebar {
    border-right: 1px solid var(--ds-border);
    background: #fff;
    padding: 16px 0;
    overflow-y: auto;
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
}

.ds-sidebar-section {
    margin-bottom: 8px;
}
.ds-sidebar-heading {
    font-size: .72rem;
    font-weight: 600;
    color: var(--ds-text-muted);
    padding: 8px 20px 4px;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.ds-sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px 8px 20px;
    font-size: .9rem;
    color: var(--ds-text);
    cursor: pointer;
    border-left: 3px solid transparent;
    user-select: none;
    border-radius: 0 20px 20px 0;
    margin-right: 8px;
    transition: background .15s;
}
.ds-sidebar-item:hover { background: var(--ds-hover); }
.ds-sidebar-item.active {
    background: var(--ds-primary-light);
    color: var(--ds-primary);
    font-weight: 600;
}
.ds-sidebar-item .bi { font-size: 1.05rem; width: 18px; text-align: center; }
.ds-sidebar-tree {
    padding-left: 0;
    list-style: none;
    margin-bottom: 0;
}
.ds-sidebar-tree li {
    font-size: .85rem;
}
.ds-tree-node {
    padding: 4px 18px 4px 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    border-radius: 0 20px 20px 0;
    margin-right: 8px;
    color: var(--ds-text);
}
.ds-tree-node:hover { background: var(--ds-hover); }
.ds-tree-node.active { background: var(--ds-primary-light); color: var(--ds-primary); font-weight: 600; }
.ds-tree-caret { cursor: pointer; width: 16px; color: var(--ds-text-muted); }

/* ======================= 메인 영역 ======================= */
.ds-main-area {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 56px);
    overflow: hidden;
}

.ds-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--ds-border);
    background: #fff;
    position: sticky;
    top: 56px;
    z-index: 20;
    box-shadow: 0 2px 4px rgba(0,0,0,0.03);
    margin-bottom: 4px;
}
.ds-breadcrumb {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 1rem;
    color: var(--ds-text);
    overflow-x: auto;
    white-space: nowrap;
    margin: 0;
    padding: 0;
    list-style: none;
}
.ds-breadcrumb li {
    display: inline-flex;
    align-items: center;
}
.ds-breadcrumb li + li::before {
    content: ">";
    display: inline-block;
    padding: 0 6px;
    color: var(--ds-text-muted);
    font-size: .85rem;
    font-weight: 400;
}

/* 내부 드래그&드롭 이동 피드백 */
.ds-list-row.ds-dragging { opacity: 0.4; }
.ds-list-row.ds-drop-target {
    outline: 2px dashed var(--ds-primary);
    background: var(--ds-primary-light);
}
.ds-breadcrumb li.ds-drop-target {
    outline: 2px dashed var(--ds-primary);
    border-radius: 4px;
    background: var(--ds-primary-light);
}
.ds-move-row:hover:not([style*="cursor:not-allowed"]) {
    background: var(--ds-hover);
}
.ds-move-row.selected {
    background: var(--ds-primary-light) !important;
    font-weight: 600;
}
.ds-breadcrumb a {
    color: var(--ds-text);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
}
.ds-breadcrumb a:hover { background: var(--ds-hover); color: var(--ds-primary); }
.ds-breadcrumb .active { font-weight: 600; padding: 4px 8px; }

.ds-search {
    flex: 0 0 280px;
    position: relative;
}
.ds-search input {
    background: var(--ds-bg-soft);
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 8px 12px 8px 36px;
    width: 100%;
    font-size: .9rem;
}
.ds-search input:focus {
    background: #fff;
    border-color: var(--ds-primary);
    outline: none;
    box-shadow: var(--ds-shadow-sm);
}
.ds-search .bi-search {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ds-text-muted);
}

.ds-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 18px;
    border: 1px solid var(--ds-border);
    background: #fff;
    color: var(--ds-text);
    font-size: .85rem;
    cursor: pointer;
    transition: background .15s, box-shadow .15s;
}
.ds-btn:hover { background: var(--ds-hover); box-shadow: var(--ds-shadow-sm); }
.ds-btn-primary {
    background: var(--ds-primary);
    color: #fff;
    border-color: var(--ds-primary);
}
.ds-btn-primary:hover { background: var(--ds-primary-hover); color: #fff; }

/* 리스트 헤더 + 행 */
.ds-list-wrap {
    flex: 1;
    overflow: auto;
    padding: 0 20px 20px;
    /* 툴바(sticky) 바로 아래에 리스트가 붙지 않도록 상단 여백 확보 */
    padding-top: 20px;
    position: relative;
}
/* 검색 결과/빈 상태처럼 ds-list-header 없이 바로 콘텐츠가 들어오는 경우에도
   툴바와의 간격이 충분하도록 첫 요소에 상단 여백 부여 */
.ds-list-wrap > *:first-child {
    margin-top: 4px;
}
.ds-list-header {
    display: grid;
    grid-template-columns: 40px 1fr 160px 180px 140px 100px 40px;
    padding: 10px 12px;
    font-size: .75rem;
    color: var(--ds-text-muted);
    border-bottom: 1px solid var(--ds-border);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .04em;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 5;
    /* 헤더 높이가 첫 행을 가리지 않도록 명시적 높이 + 배경 유지 */
    min-height: 40px;
    margin-top: 8px;
    margin-bottom: 6px;
    box-shadow: 0 1px 0 var(--ds-border);
}
/* 첫 번째 파일/폴더 행은 헤더 바로 뒤에서 시작하지 않고 약간의 공백으로 분리 */
.ds-list-header + .ds-list-row {
    margin-top: 8px;
}
.ds-list-row {
    display: grid;
    grid-template-columns: 40px 1fr 160px 180px 140px 100px 40px;
    padding: 10px 12px;
    align-items: center;
    border-bottom: 1px solid #f1f3f4;
    cursor: pointer;
    font-size: .875rem;
    transition: background .1s;
}
.ds-list-row:hover { background: var(--ds-hover); }
.ds-list-row.selected { background: var(--ds-selected); }
.ds-list-row .cell-name {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ds-list-row .cell-name .bi { font-size: 1.3rem; flex-shrink: 0; }
.ds-list-row .cell-name span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ds-list-row .cell-meta {
    color: var(--ds-text-muted);
    font-size: .8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ds-list-row .cell-actions {
    text-align: right;
}
.ds-btn-icon {
    border: 0;
    background: transparent;
    color: var(--ds-text-muted);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.ds-btn-icon:hover { background: var(--ds-hover); color: var(--ds-text); }

.ds-badge-share {
    font-size: .65rem;
    padding: 2px 6px;
    border-radius: 10px;
    background: #fff3cd;
    color: #664d03;
    margin-left: 6px;
}

.ds-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--ds-text-muted);
}
.ds-empty .bi { font-size: 3rem; color: #dadce0; }

/* 드래그 오버레이 */
.ds-drop-overlay {
    position: absolute;
    inset: 0;
    background: rgba(232, 240, 254, 0.85);
    border: 3px dashed var(--ds-primary);
    border-radius: 8px;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 500;
    font-size: 1.3rem;
    color: var(--ds-primary);
    font-weight: 600;
}
.ds-drop-overlay.active { display: flex; }

/* 업로드 진행률 */
.ds-upload-progress {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 360px;
    background: #fff;
    box-shadow: var(--ds-shadow-lg);
    border-radius: 8px;
    z-index: 1050;
    overflow: hidden;
    max-height: 400px;
}
.ds-upload-progress-header {
    padding: 10px 14px;
    background: var(--ds-primary);
    color: #fff;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .9rem;
}
.ds-upload-item {
    padding: 8px 14px;
    border-top: 1px solid var(--ds-border);
    font-size: .85rem;
}
.ds-upload-item .name {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
}
.ds-upload-item .bar {
    background: var(--ds-border);
    height: 4px;
    border-radius: 2px;
    overflow: hidden;
}
.ds-upload-item .bar-inner {
    height: 100%;
    background: var(--ds-primary);
    width: 0;
    transition: width .2s;
}
.ds-upload-item.done .bar-inner { background: #188038; width: 100% !important; }
.ds-upload-item.error .bar-inner { background: #d93025; }
.ds-upload-item.cancelled .bar-inner { background: #9aa0a6; }
.ds-upload-item.uploading .bar-inner { background: var(--ds-primary); }
.ds-upload-item .status { font-weight: 500; }
.ds-upload-item.done .status { color: #188038; }
.ds-upload-item.error .status { color: #d93025; }
.ds-upload-item.cancelled .status { color: #9aa0a6; }

/* 컨텍스트 메뉴 */
.ds-context-menu {
    position: fixed;
    z-index: 1200;
    min-width: 220px;
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--ds-shadow-lg);
    padding: 6px 0;
    font-size: .9rem;
    user-select: none;
}
.ds-context-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    cursor: pointer;
    color: var(--ds-text);
}
.ds-context-item:hover { background: var(--ds-hover); }
.ds-context-item.danger { color: #d93025; }
.ds-context-item.danger:hover { background: #fce8e6; }
.ds-context-divider {
    height: 1px;
    background: var(--ds-border);
    margin: 4px 0;
}
.ds-context-item .bi { width: 18px; font-size: 1rem; }

/* 우측 상세 패널 */
.ds-detail-panel {
    position: fixed;
    right: 0;
    top: 56px;
    bottom: 0;
    width: 340px;
    background: #fff;
    box-shadow: var(--ds-shadow-lg);
    border-left: 1px solid var(--ds-border);
    z-index: 30;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform .25s;
}
.ds-detail-panel.open { transform: translateX(0); }
.ds-detail-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--ds-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.ds-detail-title {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 8px;
}
.ds-detail-tabs {
    display: flex;
    border-bottom: 1px solid var(--ds-border);
}
.ds-detail-tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    font-size: .85rem;
    color: var(--ds-text-muted);
    border-bottom: 2px solid transparent;
}
.ds-detail-tab.active {
    color: var(--ds-primary);
    border-bottom-color: var(--ds-primary);
    font-weight: 600;
}
.ds-detail-body {
    flex: 1;
    overflow-y: auto;
    padding: 14px 18px;
    font-size: .875rem;
}
.ds-detail-row {
    display: flex;
    padding: 6px 0;
    font-size: .825rem;
}
.ds-detail-row .label {
    flex: 0 0 100px;
    color: var(--ds-text-muted);
}
.ds-detail-row .value {
    flex: 1;
    word-break: break-word;
}

/* ACL/Share 모달 커스텀 */
.ds-acl-entry {
    display: grid;
    grid-template-columns: 1fr 130px 32px;
    gap: 8px;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--ds-border);
}

/* Login (특별 처리 — 자체 배경) */
.ds-login-body {
    background: linear-gradient(135deg, #1a73e8 0%, #4fc3f7 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Admin tabs */
.ds-admin-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}
.ds-admin-wrap .nav-tabs { border-bottom: 2px solid var(--ds-border); }
.ds-admin-wrap .nav-tabs .nav-link {
    color: var(--ds-text-muted);
    border: 0;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-weight: 500;
}
.ds-admin-wrap .nav-tabs .nav-link.active {
    color: var(--ds-primary);
    background: transparent;
    border-bottom: 2px solid var(--ds-primary);
}
.ds-admin-table {
    font-size: .875rem;
}
.ds-admin-table thead {
    background: var(--ds-bg-soft);
    color: var(--ds-text-muted);
    font-size: .75rem;
    text-transform: uppercase;
}

/* 반응형 */
@media (max-width: 992px) {
    .ds-explorer { grid-template-columns: 60px 1fr; }
    .ds-sidebar { padding: 8px 0; }
    .ds-sidebar-heading { display: none; }
    .ds-sidebar-item span,
    .ds-sidebar-tree { display: none; }
    .ds-sidebar-item { justify-content: center; padding: 10px; margin: 0 4px; border-radius: 50%; }
    .ds-list-header,
    .ds-list-row {
        grid-template-columns: 40px 1fr 100px 40px;
    }
    .ds-list-header > *:nth-child(3),
    .ds-list-header > *:nth-child(4),
    .ds-list-header > *:nth-child(5),
    .ds-list-row > *:nth-child(3),
    .ds-list-row > *:nth-child(4),
    .ds-list-row > *:nth-child(5) {
        display: none;
    }
    .ds-search { flex: 0 0 150px; }
    .ds-detail-panel { width: 100%; }
}