:root {
  --bg: #f5f7fa;
  --card: #fff;
  --primary: #0f4c81;
  --primary-soft: #e8f0f8;
  --danger: #d14343;
  --success: #2b8a3e;
  --warn: #e67e22;
  --text: #1e293b;
  --muted: #718096;
  --border: #d9e2ec;
  --hover: #f0f4f8;
  --tag-bg: #e3edf7;
  --tag-text: #0f4c81;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

/* ─── Login ─── */
.login-view {
  height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-box {
  width: min(380px, 100%);
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(15, 76, 129, .08);
}
.login-box .brand { color: var(--primary); font-weight: 700; }
.login-box h1 { margin: 8px 0 20px; font-size: 22px; }
.login-box input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
}
.login-box button {
  width: 100%;
  margin-top: 12px;
  padding: 12px;
  border: 0;
  border-radius: 6px;
  color: #fff;
  background: var(--primary);
}
#loginError { min-height: 20px; color: var(--danger); font-size: 13px; }

/* ─── Layout ─── */
.app-view { height: 100vh; display: flex; overflow: hidden; }

/* ─── Sidebar ─── */
.sidebar {
  width: 230px;
  flex: 0 0 230px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-right: 1px solid var(--border);
  transition: transform .3s;
  z-index: 100;
}
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 90; }
.side-head {
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.side-head strong { display: block; color: var(--primary); font-size: 16px; }
.side-head span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; word-break: break-all; }
.side-head .hamburger { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--primary); padding: 4px 8px; }
.sidebar-stats { display: flex; padding: 10px 16px; gap: 10px; border-bottom: 1px solid var(--border); }
.sidebar-stats .stat { flex: 1; text-align: center; }
.sidebar-stats .num { font-size: 18px; font-weight: 700; color: var(--primary); }
.sidebar-stats .lbl { font-size: 10px; color: var(--muted); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 6px 0; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: #cdd5e0; border-radius: 2px; }
.nav-item, .logout {
  margin: 6px 10px 0;
  padding: 10px 12px;
  border: 0;
  border-radius: 6px;
  text-align: left;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all .12s;
  border-left: 3px solid transparent;
  min-height: 36px;
  width: calc(100% - 20px);
}
.nav-item:hover { background: var(--hover); color: var(--text); }
.nav-item.active { background: var(--primary-soft); border-left-color: var(--primary); color: var(--primary); font-weight: 600; }
.nav-item .badge { font-size: 10px; color: var(--muted); background: var(--bg); padding: 1px 7px; border-radius: 8px; margin-left: auto; }
.logout { margin-top: auto; margin-bottom: 12px; color: var(--danger); display: block; }

/* ─── Main ─── */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* ─── Toolbar ─── */
.toolbar {
  background: var(--card);
  padding: 6px 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
  z-index: 10;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.main-toolbar-hamburger { display: none; }
.toolbar input[type=search] {
  flex: 1;
  min-width: 180px;
  max-width: 280px;
  padding: 8px 14px 8px 34px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23899'%3E%3Cpath d='M12.8 11.2L9.6 8a4.5 4.5 0 10-1.6 1.6l3.2 3.2a1.1 1.1 0 001.6-1.6zM2 5.5a3.5 3.5 0 117 0 3.5 3.5 0 01-7 0z'/%3E%3C/svg%3E") 10px center no-repeat;
  outline: none;
  transition: border-color .15s;
}
.toolbar input[type=search]:focus { border-color: var(--primary); background-color: #fff; }
.toolbar select {
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  outline: none;
  background: #fff;
  cursor: pointer;
  color: var(--text);
}
.toolbar select:focus { border-color: var(--primary); }
.toolbar .btn {
  padding: 8px 15px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 500;
  transition: all .15s;
  white-space: nowrap;
}
.toolbar .btn-primary { background: var(--primary); color: #fff; }
.toolbar .btn-primary:hover { opacity: .9; }
.toolbar .btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.toolbar .btn-outline:hover { background: var(--primary-soft); }
.toolbar .btn-danger { background: var(--danger); color: #fff; }
.toolbar .btn-danger:hover { opacity: .9; }
.toolbar .btn-danger:disabled { opacity: .45; cursor: not-allowed; }
.toolbar .btn-warn { background: var(--warn); color: #fff; }
.toolbar .btn-warn:hover { opacity: .9; }
.toolbar .btn-export { background: var(--success); color: #fff; }
.toolbar .btn-export:hover { opacity: .9; }
.toolbar .count { font-size: 12px; color: var(--muted); white-space: nowrap; margin-left: auto; }
.toolbar .sep { width: 1px; height: 22px; background: var(--border); margin: 0 2px; }

/* ─── Status Indicator ─── */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  cursor: pointer;
  white-space: nowrap;
  transition: all .15s;
  border: 1px solid transparent;
  background: var(--bg);
}
.status-indicator.ok { color: var(--success); border-color: #b7e4c7; background: #f0faf3; }
.status-indicator.warn { color: var(--warn); border-color: #f5cba7; background: #fff9f2; }
.status-indicator.err { color: var(--danger); border-color: #f5b7b7; background: #fff5f5; }
.status-indicator:hover { opacity: .85; }
.status-indicator .si-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.status-indicator.ok .si-dot { background: var(--success); }
.status-indicator.warn .si-dot { background: var(--warn); }
.status-indicator.err .si-dot { background: var(--danger); }

/* ─── Upload Zone ─── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 16px 24px;
  text-align: center;
  margin: 8px 14px;
  cursor: pointer;
  transition: all .2s;
  background: var(--card);
  display: none;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--primary); background: var(--primary-soft); }
.upload-zone .icon { font-size: 36px; margin-bottom: 8px; color: var(--muted); }
.upload-zone .txt { font-size: 14px; color: var(--muted); }
.upload-zone .txt b { color: var(--primary); }
.progress-wrap { display: none; margin-top: 14px; width: 100%; max-width: 400px; margin-left: auto; margin-right: auto; }
.progress-wrap.show { display: block; }
.progress-bar-outer { width: 100%; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.progress-bar-inner { height: 100%; background: var(--primary); border-radius: 4px; transition: width .3s; width: 0%; }
.progress-text { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ─── Content / Grid ─── */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 14px;
}
.content::-webkit-scrollbar { width: 6px; }
.content::-webkit-scrollbar-thumb { background: #cdd5e0; border-radius: 3px; }
.file-grid {
  align-items: start;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 8px;
}
.empty { text-align: center; padding: 80px 20px; color: var(--muted); font-size: 14px; }
.loading-text { text-align: center; padding: 40px; color: var(--primary); font-size: 14px; }

/* ─── Card ─── */
.file-card {
  background: var(--card);
  border-radius: 10px;
  overflow: visible;
  box-shadow: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.06);
  cursor: default;
  transition: all .2s;
  border: 2px solid transparent;
  position: relative;
  display: flex;
  flex-direction: column;
}
.file-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); transform: translateY(-1px); }
.file-card.selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,76,129,.12); }
.file-card .chk {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--primary);
  opacity: 0;
  transition: opacity .15s;
}
.file-card:hover .chk, .file-card .chk:checked { opacity: 1; }
.img-wrap {
  width: 100%;
  height: 160px;
  overflow: hidden;
  background: #f1f5f9;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  border-radius: 10px 10px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.img-wrap:hover img { transform: scale(1.05); }
.img-wrap .overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,76,129,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .2s;
}
.img-wrap:hover .overlay { opacity: 1; }
.img-wrap .overlay span { color: #fff; font-size: 12px; background: rgba(0,0,0,.5); padding: 4px 12px; border-radius: 12px; }
.img-loading { font-size: 11px; color: var(--muted); position: absolute; }

/* ─── Card Body ─── */
.card-body { flex: 0 1 auto; padding: 6px 8px 4px; display: flex; flex-direction: column; gap: 2px; }
.meta-row { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.city-tag { display: inline-block; padding: 1px 7px; border-radius: 6px; font-size: 10px; background: var(--tag-bg); color: var(--tag-text); font-weight: 500; }
.purpose-tag { display: inline-block; padding: 1px 7px; border-radius: 6px; font-size: 10px; background: #fff3e0; color: var(--warn); font-weight: 500; }
.cn-name { font-size: 13px; font-weight: 600; color: var(--text); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cn-name.empty { color: var(--muted); font-weight: 400; font-style: italic; }
.en-name { font-size: 10px; color: var(--muted); word-break: break-all; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; font-family: monospace; }
.editable { display: flex; gap: 4px; margin-top: 2px; }
.editable input, .editable select {
  flex: 1;
  padding: 4px 6px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 11px;
  background: var(--bg);
  outline: none;
  transition: all .15s;
  font-family: inherit;
  min-width: 0;
}
.editable input:hover, .editable select:hover { border-color: var(--border); }
.editable input:focus, .editable select:focus { border-color: var(--primary); background: #fff; }
.editable select { cursor: pointer; }
.editable-row { display: flex; gap: 4px; align-items: center; }
.purpose-mgr-btn {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--muted);
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: all .15s;
}
.purpose-mgr-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.remark-area {
  width: 100%;
  padding: 4px 6px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 10px;
  background: var(--bg);
  outline: none;
  font-family: inherit;
  resize: none;
  min-height: 36px;
  line-height: 1.4;
  transition: all .15s;
}
.remark-area:hover { border-color: var(--border); }
.remark-area:focus { border-color: var(--primary); background: #fff; }

/* ─── Card Actions ─── */
.card-actions { display: flex; gap: 4px; padding: 4px 8px 6px; border-top: 1px solid var(--border); margin-top: auto; }
.cbtn { padding: 3px 8px; border: none; border-radius: 4px; font-size: 11px; cursor: pointer; font-weight: 500; transition: all .12s; }
.cbtn-copy { background: var(--primary-soft); color: var(--primary); }
.cbtn-copy:hover { background: #d4e2f5; }
.cbtn-open { background: transparent; color: var(--muted); }
.cbtn-open:hover { color: var(--primary); }
.cbtn-rename { background: transparent; color: var(--muted); }
.cbtn-rename:hover { color: var(--warn); }
.cbtn-del { background: transparent; color: var(--muted); }
.cbtn-del:hover { color: var(--danger); }
.rename-input {
  width: 100%;
  border: 1px solid var(--primary);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 10px;
  background: #fff;
  outline: none;
  font-family: monospace;
}

/* ─── Copy Dropdown ─── */
.copy-btn-wrap { position: relative; display: inline-block; }
.copy-dropdown {
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: 4px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  min-width: 200px;
  z-index: 50;
  display: none;
  padding: 4px 0;
}
.copy-dropdown.show { display: block; }
.copy-dropdown .copy-item {
  display: block;
  width: 100%;
  padding: 7px 14px;
  border: none;
  background: none;
  text-align: left;
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
  transition: background .12s;
  white-space: nowrap;
}
.copy-dropdown .copy-item:hover { background: var(--hover); color: var(--primary); }
.copy-dropdown .copy-item .hint { display: block; font-size: 10px; color: var(--muted); margin-top: 1px; }

/* ─── Bottom Bar ─── */
.bottombar {
  background: var(--card);
  padding: 6px 14px;
  box-shadow: 0 -1px 3px rgba(0,0,0,.04);
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
  border-top: 1px solid var(--border);
}
.bottombar .sel-count { font-size: 13px; color: var(--primary); font-weight: 600; white-space: nowrap; min-width: 60px; }
.bottombar .url-preview {
  flex: 1;
  max-height: 44px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  font-family: monospace;
  color: var(--muted);
  overflow-y: auto;
  background: var(--bg);
  white-space: pre-wrap;
  word-break: break-all;
}
.bottombar .btns { display: flex; gap: 8px; flex-wrap: wrap; }
.bottombar .btn-sm {
  padding: 7px 14px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
}

/* ─── Modal / Preview ─── */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 9999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.modal.show { display: flex; }
.modal img { max-width: 92vw; max-height: 78vh; border-radius: 8px; box-shadow: 0 8px 40px rgba(0,0,0,.5); }
.modal .m-info { color: #ccc; margin-top: 14px; font-size: 14px; max-width: 80vw; text-align: center; }
.modal .m-info .m-cn { font-size: 18px; color: #fff; font-weight: 600; }
.modal .m-actions { margin-top: 10px; display: flex; gap: 10px; position: relative; }
.modal .m-btn {
  padding: 8px 18px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 20px;
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  background: transparent;
}
.modal .m-btn:hover { background: rgba(255,255,255,.1); }
.modal-copy-wrap { position: relative; }
.modal .modal-copy-dropdown {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 6px;
  background: #2a2a2a;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  min-width: 200px;
  z-index: 50;
  display: none;
  padding: 4px 0;
}
.modal .modal-copy-dropdown.show { display: block; }
.modal .modal-copy-dropdown .copy-item {
  display: block;
  width: 100%;
  padding: 7px 14px;
  border: none;
  background: none;
  text-align: left;
  font-size: 12px;
  cursor: pointer;
  color: #ccc;
  transition: background .12s;
  white-space: nowrap;
}
.modal .modal-copy-dropdown .copy-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.modal .modal-copy-dropdown .copy-item .hint { display: block; font-size: 10px; color: #888; margin-top: 1px; }

/* ─── Diagnostic Panel ─── */
.diag-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 9990;
  align-items: center;
  justify-content: center;
}
.diag-overlay.show { display: flex; }
.diag-panel {
  background: #fff;
  border-radius: 14px;
  width: 480px;
  max-width: 94vw;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
  overflow: hidden;
}
.diag-head { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.diag-head h3 { font-size: 15px; color: var(--text); margin: 0; }
.diag-body { padding: 16px 20px; max-height: 420px; overflow-y: auto; }
.diag-row { display: flex; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--bg); gap: 10px; font-size: 13px; }
.diag-row:last-child { border-bottom: none; }
.diag-row .diag-icon { font-size: 18px; flex-shrink: 0; }
.diag-row .diag-label { flex: 1; color: var(--text); }
.diag-row .diag-val { color: var(--muted); font-size: 12px; text-align: right; max-width: 220px; word-break: break-all; }
.diag-row .diag-val.ok { color: var(--success); }
.diag-row .diag-val.err { color: var(--danger); }
.diag-row .diag-val.warn { color: var(--warn); }
.diag-foot { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }
.diag-foot button { padding: 6px 16px; border-radius: 6px; border: 1px solid var(--border); background: #fff; font-size: 12px; cursor: pointer; color: var(--text); transition: all .15s; }
.diag-foot button:hover { background: var(--hover); }
.diag-foot button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.close-btn { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--muted); padding: 2px 6px; }
.close-btn:hover { color: var(--text); }

/* ─── Purpose Management Panel ─── */
.panel-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 9990;
  align-items: center;
  justify-content: center;
}
.panel-overlay.show { display: flex; }
.panel-box {
  background: #fff;
  border-radius: 14px;
  width: 420px;
  max-width: 94vw;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
  overflow: hidden;
}
.panel-head { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.panel-head h3 { font-size: 15px; color: var(--text); margin: 0; }
.panel-body { padding: 14px 20px; max-height: 340px; overflow-y: auto; }
.panel-body .purp-row { display: flex; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--bg); }
.panel-body .purp-row:last-child { border-bottom: none; }
.panel-body .purp-row span { flex: 1; font-size: 13px; color: var(--text); }
.panel-body .purp-row button {
  padding: 3px 10px;
  border: none;
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  background: transparent;
  color: var(--danger);
  transition: all .12s;
}
.panel-body .purp-row button:hover { background: #fff0f0; }
.panel-add { display: flex; gap: 8px; padding: 10px 20px 16px; border-top: 1px solid var(--border); }
.panel-add input { flex: 1; padding: 7px 10px; border: 1.5px solid var(--border); border-radius: 6px; font-size: 12px; outline: none; }
.panel-add input:focus { border-color: var(--primary); }
.panel-add button { padding: 7px 14px; border: none; border-radius: 6px; background: var(--primary); color: #fff; font-size: 12px; cursor: pointer; font-weight: 500; }

/* ─── Folder Management ─── */
.folder-actions { padding: 6px 10px; border-top: 1px solid var(--border); }
.add-folder-btn { color: var(--primary) !important; font-weight: 600; border-left-color: var(--primary) !important; }
.add-folder-btn:hover { background: var(--primary-soft) !important; }
.folder-row {
  display: flex;
  align-items: center;
  padding-right: 4px;
  transition: background .12s;
  border-left: 3px solid transparent;
  margin: 0 8px 0 10px;
  border-radius: 6px;
}
.folder-row.active { background: var(--primary-soft); border-left-color: var(--primary); }
.folder-row:hover { background: var(--hover); }
.folder-row .tree-toggle {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  font-size: 9px;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  margin-left: 2px;
  user-select: none;
}
.folder-row .tree-toggle:hover { color: var(--primary); background: var(--bg); }
.folder-row .nav-item {
  margin: 0;
  border-left: none;
  width: auto;
}
.folder-item.sub-folder { font-size: 12px; color: var(--muted); }
.folder-item .folder-del {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  opacity: 0;
  transition: all .15s;
  flex-shrink: 0;
}
.folder-item .folder-rename {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  opacity: 0;
  transition: all .15s;
  flex-shrink: 0;
}
.folder-row:hover .folder-del,
.folder-row:hover .folder-rename { opacity: 1; }
.folder-item .folder-del:hover { color: #fff; background: var(--danger); }
.folder-item .folder-rename:hover { color: var(--warn); background: var(--bg); }

/* ─── Diagnostic Action Buttons ─── */
.diag-guide-btn, .diag-fix-btn {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  background: #fff;
  color: var(--primary);
  margin-left: 6px;
  white-space: nowrap;
}
.diag-guide-btn:hover { background: var(--primary-soft); border-color: var(--primary); }
.diag-fix-btn { background: var(--primary); color: #fff; border-color: var(--primary); }
.diag-fix-btn:hover { opacity: .85; }

/* ─── Toast ─── */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 24px;
  border-radius: 20px;
  font-size: 13px;
  z-index: 99999;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  background: var(--success);
  color: #fff;
  font-weight: 500;
  max-width: 90vw;
  text-align: center;
}
.toast.show { opacity: 1; }
.toast.err { background: var(--danger); }

/* ─── Img Error ─── */
.img-error-wrap {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #f8fafc;
  gap: 6px;
  cursor: pointer;
}
.img-error-wrap .err-icon { font-size: 28px; }
.img-error-wrap .err-text { font-size: 10px; color: var(--muted); text-align: center; padding: 0 8px; }
.img-error-wrap .err-retry { font-size: 10px; color: var(--primary); text-decoration: underline; cursor: pointer; }

/* ─── Link Manager ─── */
.lm-panel-box { max-width: 1100px; height: 85vh; }
.lm-panel-body { overflow: auto; }
.lm-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  position: sticky;
  top: 0;
  background: var(--panel-bg);
  z-index: 2;
}
.lm-toolbar select,
.lm-toolbar input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
}
.lm-toolbar select { min-width: 140px; }
.lm-toolbar input { flex: 1; min-width: 200px; }
.lm-count { color: var(--muted); font-size: 12px; white-space: nowrap; }
.lm-empty { text-align: center; padding: 40px; color: var(--muted); }
.lm-table-wrap { overflow-x: auto; }
.lm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.lm-table th {
  text-align: left;
  padding: 8px 10px;
  background: var(--bg);
  border-bottom: 2px solid var(--border);
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
  position: sticky;
  top: 48px;
  z-index: 1;
}
.lm-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.lm-table tbody tr:hover { background: var(--hover); }
.lm-thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  display: block;
}
.lm-thumb:hover { outline: 2px solid var(--primary); }
.lm-fn { font-weight: 500; word-break: break-all; }
.lm-cn { font-size: 11px; color: var(--muted); margin-top: 2px; }
.lm-copy-btn {
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  color: var(--primary);
  white-space: nowrap;
  transition: all .15s;
}
.lm-copy-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.lm-copy-btn.copied { background: var(--success); color: #fff; border-color: var(--success); }
.btn-linkmgr { background: var(--primary); color: #fff; }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0,0,0,.12);
  }
  .sidebar.open { transform: translateX(0); }
  .side-head .hamburger { display: block; }
  .sidebar-overlay.show { display: block; }
  .main-toolbar-hamburger {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
    font-size: 18px;
    color: var(--primary);
    flex-shrink: 0;
    margin-right: 4px;
  }
  .toolbar { padding: 8px 12px; gap: 6px; }
  .toolbar input[type=search] { min-width: 120px; max-width: 160px; }
  .toolbar select { font-size: 12px; padding: 7px 10px; }
  .toolbar .btn { padding: 7px 10px; font-size: 11px; }
  .file-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
  .img-wrap { height: 130px; }
  .content { padding: 8px 10px; }
  .bottombar { padding: 8px 12px; flex-wrap: wrap; gap: 6px; }
  .bottombar .url-preview { max-height: 32px; font-size: 10px; }
  .bottombar .btn-sm { padding: 6px 10px; font-size: 11px; }
  .modal img { max-width: 96vw; }
  .copy-dropdown { left: auto; right: 0; min-width: 170px; }
}
@media (min-width: 769px) {
  .main-toolbar-hamburger { display: none !important; }
}
@media (max-width: 480px) {
  .file-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .img-wrap { height: 110px; }
  .card-body { padding: 6px 8px; }
  .card-actions { padding: 4px 8px 6px; gap: 2px; }
  .cbtn { padding: 2px 6px; font-size: 10px; }
}