/* ── Reset & base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --bg:        #f8f7f5;
  --surface:   #ffffff;
  --surface2:  #f2f1ef;
  --border:    rgba(0,0,0,0.09);
  --border2:   rgba(0,0,0,0.16);

  --text:      #1a1a18;
  --muted:     #6b6b68;
  --hint:      #9e9e9b;

  --blue:      #3b7de8;
  --blue-bg:   #eef4ff;
  --blue-text: #1a4fa0;

  --green:     #3aaa5f;
  --green-bg:  #edfbf3;
  --green-text:#1a6636;

  --amber:     #d08a00;
  --amber-bg:  #fffbeb;
  --amber-text:#7a5200;

  --red:       #d63f3f;
  --red-bg:    #fff1f1;
  --red-text:  #8b1c1c;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --sidebar-w: 220px;
  --topbar-h:  52px;
}

html, body { height: 100%; font-family: var(--font); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

/* ── Screens ─────────────────────────────────────────────────────── */
.screen { display: none; height: 100vh; }
.screen.active { display: flex; flex-direction: column; }

/* ── Login ───────────────────────────────────────────────────────── */
.login-bg {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 30px 28px;
  width: 340px;
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
.brand-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--blue);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 20px;
}
.brand-name  { font-size: 16px; font-weight: 600; }
.brand-sub   { font-size: 12px; color: var(--muted); }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--muted); margin-bottom: 5px; }
.input-wrap { position: relative; display: flex; align-items: center; }
.input-icon { position: absolute; left: 10px; font-size: 15px; color: var(--hint); pointer-events: none; }
.input-wrap input {
  width: 100%; padding: 9px 36px 9px 32px;
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 13px;
  background: var(--surface); color: var(--text);
  outline: none; transition: border-color .15s;
}
.input-wrap input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(59,125,232,.12); }
.pass-toggle {
  position: absolute; right: 8px;
  background: none; border: none; cursor: pointer;
  color: var(--hint); font-size: 15px; padding: 4px;
  display: flex; align-items: center;
}
.pass-toggle:hover { color: var(--muted); }

.login-error { font-size: 12px; color: var(--red); min-height: 18px; margin-bottom: 8px; }

.btn-login {
  width: 100%; padding: 10px;
  border: none; border-radius: var(--radius-sm);
  background: var(--blue); color: #fff;
  font-family: var(--font); font-size: 13px; font-weight: 500;
  cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px;
  transition: background .15s;
}
.btn-login:hover { background: #2d6ed4; }
.btn-login.loading { opacity: .7; pointer-events: none; }


.forgot-link-wrap { margin-top: 14px; text-align: center; }
.forgot-link { font-size: 12px; color: var(--muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
.forgot-link:hover { color: var(--blue); }
.form-desc { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 18px; }
.forgot-success { font-size: 13px; color: var(--green); min-height: 18px; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
/* ── Topbar ──────────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  display: flex; align-items: center;
  padding: 0 16px; gap: 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.topbar-left  { display: flex; align-items: center; gap: 10px; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.topbar-sep   { width: 1px; height: 16px; background: var(--border2); }

.brand-mini { display: flex; align-items: center; gap: 6px; }
.brand-mini i { font-size: 17px; color: var(--blue); }
.brand-mini span { font-size: 13px; font-weight: 600; }

.doc-name    { font-size: 13px; font-weight: 500; }
.version-pill {
  font-size: 11px; font-weight: 500;
  padding: 2px 9px; border-radius: 20px;
  background: var(--blue-bg); color: var(--blue-text);
}
.version-pill.old { background: var(--surface2); color: var(--muted); }

.idle-chip {
  display: none; align-items: center; gap: 5px;
  font-size: 11px; padding: 3px 10px; border-radius: 20px;
  background: var(--amber-bg); color: var(--amber-text);
  border: 1px solid rgba(208,138,0,.25);
}
.idle-chip.visible { display: flex; }

.lock-status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.status-dot.locked { background: var(--red); }

.user-pill {
  display: flex; align-items: center; gap: 7px;
  padding: 4px 10px 4px 5px;
  border: 1px solid var(--border); border-radius: 20px;
  font-size: 12px;
}

.avatar-sm {
  width: 24px; height: 24px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 600; color: #fff;
  flex-shrink: 0;
}

.btn-ghost {
  width: 32px; height: 32px;
  border: 1px solid var(--border2); border-radius: var(--radius-sm);
  background: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: var(--muted);
  transition: all .12s;
}
.btn-ghost:hover { background: var(--surface2); color: var(--text); }

/* ── Layout ──────────────────────────────────────────────────────── */
.layout {
  flex: 1; display: flex; overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--surface2);
  display: flex; flex-direction: column;
  overflow: hidden;
}

.sidebar-section-head {
  padding: 9px 12px;
  font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--hint);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 5px;
  flex-shrink: 0;
}
.sidebar-section-head i { font-size: 12px; }

/* Viewers */
.viewer-list {
  padding: 8px;
  border-bottom: 1px solid var(--border);
  min-height: 48px;
  flex-shrink: 0;
}
.viewer-row {
  display: flex; align-items: center; gap: 7px;
  padding: 4px 4px;
  border-radius: var(--radius-sm);
}
.viewer-name { font-size: 12px; flex: 1; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.viewer-badge {
  font-size: 10px; font-weight: 500;
  padding: 1px 6px; border-radius: 8px;
}
.badge-editing { background: var(--red-bg); color: var(--red-text); }
.badge-viewing { background: var(--surface); color: var(--hint); border: 1px solid var(--border); }

/* Version list */
.version-list { flex: 1; overflow-y: auto; }
.v-item {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background .1s;
}
.v-item:hover    { background: var(--surface); }
.v-item.selected {
  background: var(--surface);
  border-left: 3px solid var(--blue);
  padding-left: 9px;
}
.vi-row { display: flex; align-items: center; gap: 6px; margin-bottom: 3px; }
.vi-name { font-size: 12px; font-weight: 500; max-width: 130px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: default; }
.latest-tag {
  font-size: 9px; font-weight: 600;
  padding: 1px 5px; border-radius: 6px;
  background: var(--green-bg); color: var(--green-text);
  text-transform: uppercase; letter-spacing: .03em;
}
.vi-meta { font-size: 11px; color: var(--muted); line-height: 1.6; }
.vi-dl {
  display: inline-flex; align-items: center; gap: 3px;
  margin-top: 4px; font-size: 10px;
  padding: 2px 7px; border-radius: 6px;
  border: 1px solid var(--border2);
  background: none; color: var(--muted);
  cursor: pointer; font-family: var(--font);
  transition: all .1s;
}
.vi-dl:hover { background: var(--surface); color: var(--blue); border-color: var(--blue); }

.empty-state { font-size: 12px; color: var(--hint); padding: 6px 4px; }

/* ── Editor panel ────────────────────────────────────────────────── */
.editor-panel {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface);
}

/* Alert bars */
.alert-bar {
  display: none;
  align-items: center; gap: 8px;
  padding: 8px 16px; font-size: 12px;
  border-bottom: 1px solid transparent;
  flex-shrink: 0;
}
.alert-bar.visible { display: flex; }
.alert-bar i { font-size: 14px; flex-shrink: 0; }
.alert-warn   { background: var(--amber-bg); color: var(--amber-text); border-color: rgba(208,138,0,.2); }
.alert-danger { background: var(--red-bg);   color: var(--red-text);   border-color: rgba(214,63,63,.2); }
.alert-info   { background: var(--blue-bg);  color: var(--blue-text);  border-color: rgba(59,125,232,.2); }

/* Toolbar */
.editor-toolbar {
  display: flex; align-items: center; gap: 4px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  flex-shrink: 0;
}
.toolbar-group { display: flex; gap: 2px; }
.tb-btn {
  background: none; border: 1px solid transparent;
  padding: 4px 8px; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 12px;
  color: var(--muted); cursor: pointer;
  transition: all .1s;
}
.tb-btn:hover:not(:disabled) { background: var(--surface); border-color: var(--border2); color: var(--text); }
.tb-btn:disabled { opacity: .3; cursor: default; }
.tb-divider { width: 1px; height: 18px; background: var(--border2); margin: 0 4px; }
.char-count { font-size: 11px; color: var(--hint); font-family: var(--mono); }

/* Editor textarea */
.editor-wrap { flex: 1; overflow-y: auto; padding: 24px 28px; }
#editor {
  width: 100%; height: 100%; min-height: 300px;
  border: none; outline: none; resize: none;
  font-family: var(--font); font-size: 14px; line-height: 1.85;
  color: var(--text); background: transparent;
}
#editor:disabled { color: var(--muted); cursor: default; }

/* Footer */
.editor-footer {
  display: flex; align-items: center;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  gap: 10px; flex-shrink: 0;
}
.footer-left { flex: 1; }
.footer-right { display: flex; gap: 8px; }

.current-user-badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px 4px 5px;
  border: 1px solid var(--border); border-radius: 20px;
  font-size: 12px; color: var(--muted);
}

.btn-outline {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border2); border-radius: var(--radius-sm);
  background: none; cursor: pointer;
  font-family: var(--font); font-size: 12px; font-weight: 500; color: var(--text);
  transition: all .12s;
}
.btn-outline:hover:not(:disabled) { background: var(--surface2); }
.btn-outline:disabled { opacity: .4; cursor: default; }
.btn-outline.active { border-color: var(--blue); color: var(--blue); background: var(--blue-bg); }

.btn-primary {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border: none; border-radius: var(--radius-sm);
  background: var(--blue); color: #fff;
  font-family: var(--font); font-size: 12px; font-weight: 500;
  cursor: pointer; transition: background .12s;
}
.btn-primary:hover:not(:disabled) { background: #2d6ed4; }
.btn-primary:disabled { opacity: .4; cursor: default; }

/* ── Modal ───────────────────────────────────────────────────────── */
.modal-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.3);
  align-items: center; justify-content: center;
  z-index: 100;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 24px 26px 20px;
  width: 340px;
  animation: modal-in .18s ease;
}
@keyframes modal-in { from { transform: scale(.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.modal-icon { font-size: 28px; margin-bottom: 12px; }
.modal h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.modal p  { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.modal-actions button {
  padding: 7px 14px; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 12px; font-weight: 500;
  cursor: pointer; transition: all .12s;
}
.mbtn-cancel { background: none; border: 1px solid var(--border2); color: var(--text); }
.mbtn-cancel:hover { background: var(--surface2); }
.mbtn-confirm { background: var(--blue); border: none; color: #fff; }
.mbtn-confirm:hover { background: #2d6ed4; }
.mbtn-danger  { background: var(--red); border: none; color: #fff; }
.mbtn-danger:hover  { background: #b83333; }
.mbtn-save    { background: var(--green); border: none; color: #fff; }
.mbtn-save:hover { background: #2f9050; }

/* ── Toast ───────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 200;
}
.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: var(--text); color: #fff;
  border-radius: var(--radius-md);
  font-size: 13px;
  animation: toast-in .2s ease;
  max-width: 280px;
}
.toast.success { background: var(--green); }
.toast.warn    { background: var(--amber); }
.toast.error   { background: var(--red); }
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ── Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Logo ─────────────────────────────────────────────────────────── */
.brand-logo { width: 52px; height: 52px; object-fit: contain; flex-shrink: 0; }
.topbar-logo { width: 44px; height: 44px; object-fit: contain; flex-shrink: 0; }
.brand-mini-name { font-size: 13px; font-weight: 600; white-space: nowrap; }

/* ── Role badges ──────────────────────────────────────────────────── */
.role-badge { font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 10px; text-transform: uppercase; letter-spacing: .04em; }
.role-admin  { background: #eef4ff; color: #1a4fa0; }
.role-editor { background: #edfbf3; color: #1a6636; }
.role-reader { background: #f5f5f3; color: #5f5e5a; }
.topbar-role { margin-left: 2px; }

/* ── Admin layout ─────────────────────────────────────────────────── */
.admin-body { background: var(--bg); }
.admin-layout { display: flex; height: calc(100vh - var(--topbar-h)); overflow: hidden; }

.admin-sidebar {
  width: 200px; flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex; flex-direction: column;
  padding: 12px 0;
}
.admin-nav { flex: 1; }
.admin-nav-item {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 16px; font-size: 13px; color: var(--muted);
  text-decoration: none; border-left: 3px solid transparent;
  transition: all .12s;
}
.admin-nav-item:hover { background: var(--surface2); color: var(--text); }
.admin-nav-item.active { border-left-color: var(--blue); color: var(--blue); background: var(--blue-bg); font-weight: 500; }
.admin-nav-item i { font-size: 16px; }
.admin-sidebar-footer { padding: 12px 16px; border-top: 1px solid var(--border); }
.sidebar-stat { font-size: 11px; color: var(--hint); line-height: 1.8; }

.admin-main { flex: 1; overflow-y: auto; padding: 24px; }

.admin-tab { display: none; }
.admin-tab.active { display: block; }
.admin-tab-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.admin-tab-header h2 { font-size: 18px; font-weight: 600; }

/* Filters */
.admin-filters { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filter-select {
  padding: 7px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--border2); background: var(--surface); color: var(--text);
  font-family: var(--font); font-size: 13px; cursor: pointer;
}
.filter-select:focus { outline: none; border-color: var(--blue); }

/* Table */
.admin-table-wrap { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table thead { background: var(--surface2); }
.admin-table th { padding: 10px 14px; text-align: left; font-weight: 500; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; border-bottom: 1px solid var(--border); }
.admin-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.admin-table tbody tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover td { background: var(--surface2); }
.table-empty { padding: 32px; text-align: center; color: var(--hint); font-size: 13px; }

.user-cell { display: flex; align-items: center; gap: 9px; }
.user-cell .avatar-sm { width: 30px; height: 30px; font-size: 11px; }
.user-cell-name { font-weight: 500; font-size: 13px; }
.user-cell-sub  { font-size: 11px; color: var(--muted); }

.status-chip { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 500; padding: 3px 9px; border-radius: 10px; }
.status-active   { background: var(--green-bg); color: var(--green-text); }
.status-inactive { background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }

.action-btns { display: flex; gap: 6px; justify-content: flex-end; }
.action-btn {
  width: 28px; height: 28px; border-radius: var(--radius-sm);
  border: 1px solid var(--border2); background: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--muted); transition: all .1s;
}
.action-btn:hover { background: var(--surface2); color: var(--text); }
.action-btn.danger:hover { background: var(--red-bg); color: var(--red); border-color: rgba(214,63,63,.3); }

/* Drawer */
.drawer-backdrop { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.25); z-index: 50; }
.drawer-backdrop.open { display: block; }
.drawer {
  position: fixed; top: 0; right: -420px; width: 400px; height: 100vh;
  background: var(--surface); border-left: 1px solid var(--border2);
  display: flex; flex-direction: column; z-index: 51;
  transition: right .22s ease;
}
.drawer.open { right: 0; }
.drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.drawer-header h3 { font-size: 15px; font-weight: 600; }
.drawer-close { background: none; border: none; cursor: pointer; font-size: 18px; color: var(--muted); padding: 4px; display: flex; align-items: center; }
.drawer-close:hover { color: var(--text); }
.drawer-body { flex: 1; overflow-y: auto; padding: 20px; }
.drawer-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; flex-shrink: 0; }
.drawer-error { font-size: 12px; color: var(--red); min-height: 18px; margin-top: 8px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.role-desc { font-size: 12px; color: var(--muted); margin-top: 6px; padding: 8px 10px; background: var(--surface2); border-radius: var(--radius-sm); line-height: 1.5; }

/* Reset password page reuse */
.login-bg { min-height: 100vh; }

/* ── Quill overrides ──────────────────────────────────────────────── */
.quill-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  padding: 6px 10px;
  border: none !important;
  border-bottom: 1px solid var(--border) !important;
  background: var(--surface2);
  flex-shrink: 0;
}
.quill-toolbar .ql-formats { display: flex; align-items: center; gap: 1px; }
.quill-toolbar button, .quill-toolbar select {
  font-family: var(--font) !important;
  font-size: 12px !important;
  color: var(--muted) !important;
  background: none !important;
  border: 1px solid transparent !important;
  border-radius: var(--radius-sm) !important;
  cursor: pointer;
  height: 26px !important;
  display: flex; align-items: center;
}
.quill-toolbar button:hover { background: var(--surface) !important; border-color: var(--border2) !important; color: var(--text) !important; }
.quill-toolbar button.ql-active { background: var(--blue-bg) !important; color: var(--blue) !important; border-color: var(--blue) !important; }
.quill-toolbar select { padding: 0 4px !important; height: 26px !important; cursor: pointer; }

/* Quill editor area */
.editor-wrap { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
#quill-editor {
  flex: 1;
  overflow-y: auto;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.8;
  border: none !important;
  height: 100%;
}
.ql-container.ql-snow { border: none !important; height: 100%; }
.ql-editor { padding: 24px 28px !important; min-height: 100%; font-family: var(--font) !important; font-size: 14px !important; line-height: 1.8 !important; color: var(--text) !important; }
.ql-editor p, .ql-editor ol, .ql-editor ul, .ql-editor pre, .ql-editor blockquote { margin-bottom: 6px; }
.ql-editor h1 { font-size: 22px !important; font-weight: 600 !important; margin-bottom: 8px !important; }
.ql-editor h2 { font-size: 18px !important; font-weight: 600 !important; margin-bottom: 6px !important; }
.ql-editor h3 { font-size: 15px !important; font-weight: 600 !important; margin-bottom: 4px !important; }
.ql-editor blockquote { border-left: 3px solid var(--border2); padding-left: 14px; color: var(--muted); font-style: italic; }
.ql-editor pre.ql-syntax { background: var(--surface2); border-radius: var(--radius-sm); padding: 10px 14px; font-family: var(--mono); font-size: 12px; }
.ql-editor a { color: var(--blue); }
.ql-editor.ql-blank::before { color: var(--hint) !important; font-style: normal !important; }
/* Readonly styling */
.ql-editor[contenteditable="false"] { background: var(--surface2); cursor: default; opacity: 0.8; }

/* Snow tooltip */
.ql-snow .ql-tooltip { z-index: 99; border-radius: var(--radius-sm); border-color: var(--border2); }
.ql-snow .ql-tooltip input[type=text] { font-family: var(--font); font-size: 13px; }

/* Import / Export in toolbar */
.toolbar-right-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.tb-import-btn {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 500;
  padding: 4px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--border2); background: none;
  color: var(--muted); cursor: pointer; white-space: nowrap;
  transition: all .12s;
}
.tb-import-btn:hover { background: var(--surface); color: var(--text); }
.export-wrap { position: relative; }
.tb-export-btn {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 500;
  padding: 4px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--border2); background: none;
  color: var(--muted); cursor: pointer; white-space: nowrap;
  transition: all .12s; font-family: var(--font);
}
.tb-export-btn:hover { background: var(--surface); color: var(--text); }
.export-menu {
  display: none; position: absolute; right: 0; top: calc(100% + 4px);
  background: var(--surface); border: 1px solid var(--border2);
  border-radius: var(--radius-md); padding: 4px; min-width: 180px; z-index: 50;
}
.export-menu.open { display: block; }
.export-menu button {
  width: 100%; display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border: none; background: none;
  font-family: var(--font); font-size: 13px; color: var(--text);
  border-radius: var(--radius-sm); cursor: pointer; text-align: left;
  transition: background .1s;
}
.export-menu button:hover { background: var(--surface2); }
.export-menu button i { font-size: 15px; color: var(--muted); }

/* Remove old textarea */
#editor { display: none; }

/* ── Document title rename ────────────────────────────────────────── */
.doc-title-wrap { display: flex; align-items: center; gap: 5px; }

.doc-name {
  font-size: 13px; font-weight: 500;
  cursor: default;
  border-bottom: 1px dashed transparent;
  transition: border-color .15s;
}
.doc-name:hover { border-bottom-color: var(--border2); }

.doc-rename-btn {
  width: 22px; height: 22px;
  background: none; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--hint); border-radius: var(--radius-sm);
  font-size: 13px; transition: all .12s; padding: 0;
}
.doc-rename-btn:hover { color: var(--blue); background: var(--blue-bg); }

.doc-rename-form {
  display: flex; align-items: center; gap: 4px;
}
.doc-rename-input {
  font-family: var(--font); font-size: 13px; font-weight: 500;
  padding: 3px 8px; height: 28px;
  border: 1px solid var(--blue); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text);
  outline: none; min-width: 160px; max-width: 260px;
  box-shadow: 0 0 0 3px rgba(59,125,232,.12);
}
.doc-rename-ok, .doc-rename-cancel {
  width: 24px; height: 24px;
  border-radius: var(--radius-sm); border: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; cursor: pointer; flex-shrink: 0;
}
.doc-rename-ok     { background: var(--blue);    color: #fff; }
.doc-rename-ok:hover { background: #2d6ed4; }
.doc-rename-cancel { background: var(--surface2); color: var(--muted); border: 1px solid var(--border2); }
.doc-rename-cancel:hover { color: var(--text); }