:root {
  --bg: #f7f5f0;
  --sidebar-bg: #fefcf8;
  --panel: #ffffff;
  --ink: #2c2620;
  --ink-soft: #5c544a;
  --muted: #9a8f82;
  --border: #e8e3d9;
  --border-soft: #f0ebe2;
  --accent: #c08552;
  --accent-dark: #a06a3e;
  --accent-soft: #f5ebe0;
  --accent-glow: rgba(192, 133, 82, 0.12);
  --green: #5b8c5a;
  --green-soft: #e8f0e8;
  --danger: #c25450;
  --danger-soft: #fcebea;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(80, 60, 30, 0.06), 0 1px 2px rgba(80, 60, 30, 0.04);
  --shadow-lg: 0 10px 40px rgba(80, 60, 30, 0.12), 0 2px 8px rgba(80, 60, 30, 0.06);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Noto Sans SC", "Hiragino Sans GB", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 15px;
}

* { box-sizing: border-box; }

body { margin: 0; }

body[data-theme="light"] {
  --bg: #f6f8fb;
  --sidebar-bg: #ffffff;
  --panel: #ffffff;
  --ink: #172033;
  --ink-soft: #4b5870;
  --muted: #7b8798;
  --border: #dbe2ec;
  --border-soft: #edf1f6;
  --accent: #3375cc;
  --accent-dark: #1f5fab;
  --accent-soft: #e8f1ff;
  --accent-glow: rgba(51, 117, 204, 0.14);
}

body[data-theme="dark"] {
  --bg: #111318;
  --sidebar-bg: #171a21;
  --panel: #1d212b;
  --ink: #eef2f8;
  --ink-soft: #c1cad8;
  --muted: #8792a3;
  --border: #303747;
  --border-soft: #262c38;
  --accent: #7bb2ff;
  --accent-dark: #9fc7ff;
  --accent-soft: #23324a;
  --accent-glow: rgba(123, 178, 255, 0.18);
  --green-soft: #1d3828;
  --danger-soft: #412326;
}

input, select, textarea, button {
  font: inherit;
  color: inherit;
  border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s, background .15s, color .15s;
}

input, select {
  width: 100%;
  height: 38px;
  padding: 0 10px 0 36px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
}

input::placeholder { color: var(--muted); }

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  outline: none;
}

textarea {
  width: 100%;
  min-height: 0;
  resize: none;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  font-family: "SF Mono", "Fira Code", "JetBrains Mono", Consolas, monospace;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.hidden { display: none !important; }

/* ========== Readonly Banner ========== */

.readonly-banner {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 24px;
  background: #fff3cd;
  border-bottom: 1px solid #ffc107;
  color: #856404;
  font-size: 13px;
  font-weight: 500;
}

.readonly-banner svg {
  flex-shrink: 0;
  color: #856404;
}

.readonly-banner.hidden {
  display: none !important;
}

/* 本地模式笔记数量提示 */
.git-note-info {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: #fff3cd;
  border: 1px solid #ffc107;
  color: #856404;
  font-size: 13px;
  line-height: 1.5;
}

.git-note-info.hidden {
  display: none !important;
}

.view-btn-locked {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.lock-overlay {
  display: none;
  margin-left: -4px;
  color: var(--muted);
}

.view-btn-locked .lock-overlay {
  display: inline-flex;
}

.owner-icon {
  display: none;
  margin-left: -4px;
  color: #f59e0b;
}

.view-btn-owner .owner-icon {
  display: inline-flex;
}

.team-permission-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--border-soft);
  color: var(--muted);
}

.team-permission-wrap.hidden {
  display: none;
}

.team-perm-settings-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  border-radius: 3px;
}

.team-perm-settings-btn:hover {
  background: var(--border-soft);
  color: var(--text);
}

/* Tree row delete button */
.tree-row-del {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 4px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  border-radius: 3px;
  opacity: 0;
  transition: opacity 0.15s;
}

.tree-row:hover .tree-row-del {
  opacity: 1;
}

.tree-row-del:hover {
  color: #dc3545;
  background: rgba(220, 53, 45, 0.1);
}

/* User permission modal */
.user-perm-card {
  max-width: 480px;
}

.user-perm-body {
  padding: 16px;
}

.user-perm-add-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.user-perm-add-user {
  flex: 1;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.user-perm-add-perm {
  width: auto;
  flex-shrink: 0;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.user-perm-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.user-perm-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.user-perm-name {
  flex: 1;
  font-size: 13px;
}

.user-perm-select {
  width: auto;
  flex-shrink: 0;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  font-size: 13px;
}

.user-perm-del {
  padding: 2px 8px;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  border-radius: 3px;
}

.user-perm-del:hover {
  color: #dc3545;
  background: rgba(220, 53, 45, 0.1);
}

.user-perm-empty {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 12px;
}

.team-permission-wrap select {
  height: 28px;
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  background: var(--panel);
  font-size: 12px;
  color: var(--ink);
  cursor: pointer;
}

/* ========== Auth View ========== */

.auth-view {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  background: var(--bg);
}

.auth-card {
  display: grid;
  gap: 24px;
  width: min(420px, 100%);
  padding: 40px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-lg);
}

.auth-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: -0.01em;
}

.auth-brand svg { color: var(--accent); flex-shrink: 0; }

.auth-form-view {
  display: grid;
  gap: 16px;
}

.auth-form-view h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-soft);
  text-align: center;
}

.auth-field {
  display: grid;
  gap: 6px;
}

.auth-field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
}

.auth-field input, .auth-field select {
  padding-left: 36px;
  height: 40px;
}

.auth-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.auth-row .auth-field select,
.auth-row .auth-field input {
  padding-left: 12px;
  height: 40px;
}

.auth-switch {
  margin: 0;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.auth-switch a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.auth-switch a:hover { text-decoration: underline; }

.auth-status {
  min-height: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--green);
}

.auth-status.auth-status-error {
  color: var(--danger);
}

/* ========== Mobile Editor Handle ========== */

.editor-handle {
  display: none;
}

.editor-fab {
  display: none;
}

/* ========== Topics Section ========== */

.shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: 100vh;
}

/* ========== Sidebar ========== */

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  border-right: 1px solid var(--border);
  background: var(--sidebar-bg);
  overflow-y: auto;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: -0.01em;
}

.brand-icon { color: var(--accent); flex-shrink: 0; }

.brand-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  flex-shrink: 0;
}

.btn-icon:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

/* ========== Buttons ========== */

button {
  height: 38px;
  padding: 0 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

button:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.btn-block {
  width: 100%;
  height: 42px;
  font-weight: 600;
}

.btn-secondary {
  background: var(--panel);
  border-color: var(--border);
  color: var(--ink-soft);
}

.btn-secondary:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-dark);
}

.btn-small {
  height: 28px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--ink-soft);
  cursor: pointer;
}

.btn-small:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.btn-small.danger {
  border-color: var(--danger-soft);
  color: var(--danger);
}

.btn-small.danger:hover {
  border-color: var(--danger);
  background: var(--danger-soft);
}

/* ========== Toolbar ========== */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft);
}

.btn-tool {
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all .15s;
}

.btn-tool:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.btn-tool.danger {
  border-color: var(--danger-soft);
  color: var(--danger);
  background: var(--panel);
}

.btn-tool.danger:hover {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

/* ========== Search Box ========== */

.search-box {
  display: flex;
  align-items: center;
  position: relative;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-soft);
}

.search-icon {
  position: absolute;
  left: 22px;
  color: var(--muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 32px;
  padding: 0 28px 0 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 13px;
}

.search-box input:focus {
  border-color: var(--accent);
  background: var(--panel);
}

.search-clear {
  position: absolute;
  right: 18px;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: var(--border-soft);
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.search-clear:hover {
  background: var(--border);
  color: var(--ink);
}

.sidebar-view-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-soft);
}

.sidebar-view-btn {
  height: 30px;
  padding: 0 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.sidebar-view-btn:hover {
  border-color: var(--border);
  background: var(--border-soft);
  color: var(--ink);
}

.sidebar-view-btn.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

/* ========== Note Tree ========== */

.notes {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 6px 4px;
  overflow-y: auto;
  flex: 1;
}

.notes::-webkit-scrollbar { width: 6px; }
.notes::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.tree-row {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 28px;
  padding: 0 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  width: 100%;
  font-size: 13px;
  font-weight: 400;
  transition: background .1s, color .1s;
}

.tree-row:hover {
  background: var(--border-soft);
  color: var(--ink);
}

.tree-row.active {
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 600;
}

.tree-row.folder {
  color: var(--ink);
  font-weight: 500;
}

.tree-row.file {
  color: var(--ink-soft);
}

.tree-chevron {
  flex-shrink: 0;
  color: var(--muted);
  width: 16px;
  height: 16px;
}

.tree-folder-icon {
  flex-shrink: 0;
  color: #d4a44a;
  width: 16px;
  height: 16px;
}

.tree-file-icon {
  flex-shrink: 0;
  color: var(--muted);
  width: 16px;
  height: 16px;
}

.tree-row.active .tree-file-icon {
  color: var(--accent);
}

.tree-row.active .tree-folder-icon {
  color: var(--accent-dark);
}

.tree-row.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.tree-label {
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.tree-empty {
  padding: 20px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.search-hit {
  background: rgba(255, 213, 79, 0.4);
  border-radius: 2px;
  padding: 0 1px;
}

.recent-date {
  padding: 12px 10px 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
}

.recent-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  justify-content: stretch;
  justify-items: stretch;
  gap: 2px;
  width: 100%;
  min-height: 46px;
  height: auto;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-soft);
  text-align: left;
}

.recent-row:hover {
  background: var(--border-soft);
  color: var(--ink);
}

.recent-row.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.recent-title,
.recent-meta {
  display: block;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}

.recent-title {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.recent-meta {
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
}

.team-sidebar-heading {
  margin-top: 10px;
  border-top: 1px solid var(--border-soft);
}

.team-sidebar-row {
  margin-top: 2px;
}

.team-sidebar-empty {
  padding: 6px 10px 8px 42px;
  color: var(--muted);
  font-size: 12px;
}

.team-chat-preview {
  min-height: 38px;
  padding-left: 42px;
}

/* ========== Panel Tabs (shared) ========== */

.panel-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 3px;
  border-radius: var(--radius-sm);
  background: var(--border-soft);
}

.panel-tabs.three-col {
  grid-template-columns: 1fr 1fr 1fr;
}

.panel-tabs.four-col {
  grid-template-columns: repeat(4, 1fr);
}

.note-type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.note-type-option {
  min-height: 118px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

.note-type-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.note-type-option svg {
  color: var(--accent-dark);
}

.note-type-option strong {
  font-size: 14px;
}

.note-type-option span {
  color: var(--muted);
  font-size: 12px;
}

.tab-btn {
  height: 30px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  padding: 0;
}

.tab-btn:hover { color: var(--ink); }

.tab-btn.active {
  background: var(--panel);
  color: var(--accent-dark);
  box-shadow: var(--shadow);
}

/* ========== Panel List ========== */

.panel-list {
  display: grid;
  gap: 8px;
}

.panel-list .auth-field {
  gap: 6px;
}

.panel-list .auth-field input,
.panel-list .auth-field select {
  height: 40px;
}

.panel-list .auth-row {
  gap: 12px;
}

.panel-list .auth-row .auth-field input,
.panel-list .auth-row .auth-field select {
  padding-left: 12px;
}

/* ========== SSH Key Section ========== */

.ssh-key-section {
  display: grid;
  gap: 8px;
  padding: 12px 0;
  border-top: 1px solid var(--border-soft);
}

.ssh-key-section label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
}

.ssh-key-display {
  width: 100%;
  min-height: 52px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 11px;
  color: var(--ink-soft);
  resize: none;
}

/* ========== Registration Toggle ========== */

.reg-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

/* ========== Teams ========== */

.team-layout {
  display: grid;
  grid-template-columns: minmax(160px, 220px) 1fr;
  gap: 14px;
}

.team-layout h3,
.team-head h3 {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--ink);
}

.team-list,
.team-chat-list {
  display: grid;
  gap: 8px;
}

.team-list {
  align-content: start;
}

.team-row,
.team-chat-message,
.admin-team-create {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  padding: 10px 12px;
}

.team-row {
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.team-row.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.team-row strong,
.team-chat-message strong {
  display: block;
  color: var(--ink);
  font-size: 13px;
}

.team-row span,
.team-chat-message span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.team-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.team-chat-list {
  max-height: 220px;
  overflow: auto;
}

.team-chat-compose,
.admin-team-create {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.admin-team-create {
  grid-template-columns: 1fr 1fr auto;
}

.team-chat-compose input,
.admin-team-create input {
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
}

@media (max-width: 760px) {
  .shell {
    grid-template-columns: 1fr;
    position: relative;
  }

  .sidebar {
    position: fixed;
    inset: 0;
    z-index: 10;
    overflow-y: auto;
  }

  /* Editor slides up from bottom */
  .editor {
    position: fixed;
    inset: 0;
    top: 52px;
    z-index: 20;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 14px 14px 0 0;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.15);
    overflow: hidden;
  }

  .editor.editor-open {
    transform: translateY(0);
  }

  .editor-handle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    height: 32px;
    cursor: pointer;
    background: var(--sidebar-bg);
    border-bottom: 1px solid var(--border-soft);
    flex-shrink: 0;
  }

  .editor-handle-bar {
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    transition: background 0.15s;
  }

  .editor-handle:hover .editor-handle-bar {
    background: var(--accent);
  }

  .editor-handle-label {
    display: none;
    font-size: 12px;
    color: var(--muted);
    margin-left: 10px;
  }

  /* Floating FAB to open editor */
  .editor-fab {
    display: flex;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 15;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    border: none;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: opacity 0.25s, transform 0.25s;
  }

  .editor-fab.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
  }

  .editor-fab svg {
    width: 22px;
    height: 22px;
  }

  .team-layout,
  .admin-team-create {
    grid-template-columns: 1fr;
  }

  .editor-top {
    flex-shrink: 0;
  }

  .markdown-toolbar {
    flex-shrink: 0;
    overflow-x: auto;
  }

  .editor-workspace {
    flex: 1;
    min-height: 0;
  }

  /* Larger sidebar content on mobile */
  .sidebar {
    font-size: 15px;
  }

  .tree-row {
    min-height: 36px;
    font-size: 14px;
  }

  .team-sidebar-row {
    font-size: 14px;
  }

  .team-sidebar-row .tree-row {
    min-height: 36px;
    font-size: 14px;
  }

  .toolbar .btn-tool {
    font-size: 13px;
    height: 36px;
    padding: 0 12px;
  }

  .toolbar .btn-tool span {
    font-size: 13px;
  }

  .topics-section-label {
    font-size: 13px;
  }

  .topic-item {
    font-size: 14px;
    padding: 8px 10px;
  }

  .topic-item-expiry {
    font-size: 12px;
  }

  .brand {
    font-size: 20px;
  }

  /* Topic detail panel full-width on mobile */
  .topic-detail-panel {
    width: 100% !important;
    border-radius: 0;
    border-left: none;
  }

  /* Push topics section to bottom on mobile */
  .topics-section {
    margin-top: auto;
  }

}

/* ========== Team Chat View (main area) ========== */

.chat-create-topic {
  color: var(--accent) !important;
  font-weight: 500;
}

.chat-view {
  position: fixed;
  top: 0;
  left: 300px;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  z-index: 45;
}

.chat-view-layout {
  display: grid;
  grid-template-columns: 1fr 200px;
  flex: 1;
  min-height: 0;
}

.chat-view-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--border);
}

.chat-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.chat-view-header-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* 桌面端隐藏成员切换按钮 */
.chat-view-members-toggle { display: none; }
/* 桌面端隐藏返回按钮 */
.chat-view-back { display: none; }
/* 桌面端隐藏返回主界面按钮 */
.chat-view-close-btn { display: none; }

.chat-view-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-view-compose {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border-soft);
}

.chat-view-compose input {
  height: 38px;
  padding: 0 12px;
}

.chat-view-sidebar {
  display: flex;
  flex-direction: column;
  padding: 12px;
  background: var(--sidebar-bg);
  overflow-y: auto;
}

.chat-view-sidebar h3 {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.chat-view-members {
  flex: 1;
  display: grid;
  gap: 4px;
  align-content: start;
}

.chat-member-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--ink);
}

.chat-member-item:hover {
  background: var(--accent-soft);
}

.chat-member-creator em {
  font-size: 11px;
  color: var(--accent);
  font-style: normal;
}

.chat-view-actions {
  display: grid;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}

@media (max-width: 600px) {
  .chat-view-layout {
    grid-template-columns: 1fr;
  }
  .chat-view-sidebar {
    max-height: 120px;
    border-top: 1px solid var(--border);
  }
}

/* ========== Team Chat Modal ========== */

.team-chat-modal-panel {
  height: 80vh;
  max-height: 700px;
  display: flex;
  flex-direction: column;
}

.team-chat-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  flex: 1;
  min-height: 0;
  gap: 0;
  border-top: 1px solid var(--border);
}

.team-chat-sidebar {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--sidebar-bg);
}

.team-chat-sidebar-head {
  display: flex;
  gap: 6px;
  padding: 8px;
  border-bottom: 1px solid var(--border-soft);
}

.team-chat-team-select {
  flex: 1;
  min-width: 0;
}

.team-chat-group-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px;
  display: grid;
  gap: 4px;
  align-content: start;
}

.chat-group-row-wrapper {
  position: relative;
  display: flex;
  align-items: stretch;
  border-radius: var(--radius-sm);
}

.chat-group-row-wrapper.active {
  border: 1px solid var(--accent);
}

.chat-group-row-wrapper .chat-group-row {
  flex: 1;
}

.chat-group-delete {
  flex-shrink: 0;
  width: 24px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  transition: opacity .12s, color .12s;
}

.chat-group-row-wrapper:hover .chat-group-delete {
  opacity: 1;
}

.chat-group-delete:hover {
  color: var(--danger);
}

.chat-group-row {
  width: 100%;
  text-align: left;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  padding: 8px 10px;
  transition: background .12s;
}

.chat-group-row:hover {
  background: var(--accent-soft);
}

.chat-group-row.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.chat-group-row strong {
  display: block;
  font-size: 13px;
  color: var(--ink);
}

.chat-group-row span {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.team-chat-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.team-chat-header {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.team-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-msg {
  max-width: 75%;
  padding: 8px 12px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--border-soft);
}

.chat-msg-mine {
  align-self: flex-end;
  background: var(--accent-soft);
  border-color: var(--accent);
}

.chat-msg-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 3px;
}

.chat-msg-head strong {
  font-size: 12px;
  color: var(--ink);
}

.chat-msg-time {
  font-size: 10px;
  color: var(--muted);
}

.chat-msg-body {
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  word-wrap: break-word;
}

.chat-empty {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 40px 0;
}

.team-chat-compose-bar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--border-soft);
}

.team-chat-compose-bar input {
  height: 36px;
  padding: 0 12px;
}

@media (max-width: 600px) {
  .team-chat-layout {
    grid-template-columns: 1fr;
  }
  .team-chat-sidebar {
    max-height: 160px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

/* ========== Admin Team Member Select ========== */

.admin-add-member-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-add-member-controls {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
}

.admin-member-select {
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--ink);
}

.admin-member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.admin-member-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-member-role-select {
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--ink);
  font-size: 13px;
}

.panel-hint {
  font-size: 12px;
  color: var(--muted);
}

/* ========== Team Member Panel (Personal) ========== */

.team-member-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.team-member-role {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.role-admin {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.role-member {
  background: var(--green-soft);
  color: var(--green);
}

/* Unread dot */
.unread-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  margin-left: 6px;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  background: var(--green);
  border-radius: 999px;
  vertical-align: middle;
}

.unread-dot-sm {
  min-width: 8px;
  height: 8px;
  padding: 0;
  font-size: 0;
}

/* Chat group member list */
.chat-group-member-list {
  display: grid;
  gap: 6px;
  max-height: 240px;
  overflow: auto;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.chat-group-member-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
}

.chat-group-member-item:hover {
  background: var(--accent-soft);
}

.chat-group-member-item input {
  width: auto;
  height: auto;
  padding: 0;
}

.chat-group-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.reg-toggle-row label:first-child {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--border);
  transition: .2s;
  border-radius: 12px;
}

.slider::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--panel);
  transition: .2s;
  border-radius: 50%;
}

.switch input:checked + .slider {
  background-color: var(--accent);
}

.switch input:checked + .slider::before {
  transform: translateX(20px);
}

/* ========== Admin Users ========== */

.admin-users {
  display: grid;
  gap: 6px;
}

.admin-user {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  transition: box-shadow .15s;
}

.admin-user:hover {
  box-shadow: var(--shadow);
}

.admin-user-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.admin-user-head strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-user-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.admin-user span {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-user-git {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 92px;
  gap: 8px;
  margin-top: 6px;
}

.admin-user-git input,
.admin-user-git select {
  height: 34px;
  padding-left: 10px;
  font-size: 12px;
}

.admin-user-git textarea {
  grid-column: 1 / -1;
  min-height: 64px;
  font-size: 11px;
}

.admin-user-git button {
  grid-column: 1 / -1;
  justify-self: end;
}

/* ========== Share Items ========== */

.panel-item {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  transition: box-shadow .15s;
}

.panel-item.shared { border-left: 3px solid var(--green); }
.panel-item.expired { border-left: 3px solid var(--danger); opacity: 0.7; }

.panel-item strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-item span, .panel-item a {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-item a {
  color: var(--accent);
  text-decoration: none;
}

.panel-item a:hover { text-decoration: underline; }

.panel-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.panel-actions span { min-width: 0; }

.panel-actions button {
  height: 26px;
  padding: 0 8px;
  border: 1px solid var(--danger-soft);
  border-radius: 4px;
  background: var(--panel);
  color: var(--danger);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}

.panel-actions button:hover {
  background: var(--danger-soft);
  border-color: var(--danger);
}

/* ========== Editor ========== */

.editor {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 0;
  padding: 0;
  background: var(--bg);
  overflow: hidden;
  position: relative;
}

.editor-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--sidebar-bg);
}

.shell.presenting .sidebar,
.shell.presenting .editor-top,
.shell.presenting .status,
.shell.presenting .markdown-toolbar {
  display: none;
}

.shell.presenting {
  grid-template-columns: 1fr;
}

.path-wrap { flex: 1; max-width: 600px; }
.path-wrap input { padding-left: 36px; }

.view-toggle {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-sm);
  background: var(--border-soft);
}

.view-btn {
  height: 30px;
  padding: 0 12px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all .15s;
}

.view-btn:hover { color: var(--ink); }

.view-btn.active {
  background: var(--panel);
  color: var(--accent-dark);
  box-shadow: var(--shadow);
}

.markdown-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 24px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--sidebar-bg);
}

.tool-group {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  background: var(--panel);
}

.tool-btn {
  min-width: 32px;
  width: auto;
  height: 30px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.tool-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.tool-btn.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.tool-select {
  height: 30px;
  max-width: 128px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--ink-soft);
  font-size: 12px;
  padding: 0 8px;
}

.tool-select.small {
  max-width: 74px;
}

.sheet-color {
  width: 34px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  padding: 2px;
}

.editor-workspace {
  display: grid;
  min-height: 0;
  gap: 0;
  padding: 20px 24px;
  position: relative;
}

.editor-workspace.mode-edit { grid-template-columns: 1fr; }
.editor-workspace.mode-split { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 16px; }
.editor-workspace.mode-preview { grid-template-columns: 1fr; }
.editor-workspace.mode-present {
  grid-template-columns: 1fr;
  padding: 0;
}

.editor-workspace.mode-edit .preview { display: none; }
.editor-workspace.mode-preview textarea,
.editor-workspace.mode-present textarea { display: none; }

.editor-workspace.whiteboard-active {
  grid-template-columns: 1fr;
}

.editor-workspace.typed-note-active {
  grid-template-columns: 1fr;
}

.editor-workspace.whiteboard-active textarea,
.editor-workspace.whiteboard-active .preview,
.editor-workspace.typed-note-active textarea,
.editor-workspace.typed-note-active .preview {
  display: none;
}

.whiteboard-panel,
.todo-panel,
.bookmark-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  overflow: hidden;
}

.spreadsheet-panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  overflow: hidden;
}

.whiteboard-panel.hidden,
.todo-panel.hidden,
.bookmark-panel.hidden,
.spreadsheet-panel.hidden {
  display: none;
}

.whiteboard-tools,
.typed-note-tools,
.spreadsheet-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--sidebar-bg);
}

.typed-note-tools input {
  height: 34px;
  min-width: 0;
  flex: 1;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--ink);
}

.bookmark-entry {
  display: grid;
  grid-template-columns: auto auto minmax(120px, 1fr) minmax(180px, 2fr) auto;
}

.todo-list,
.bookmark-list {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 14px;
  overflow: auto;
}

.todo-item,
.bookmark-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.todo-item label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.todo-item input {
  width: 16px;
  height: 16px;
}

.todo-item span,
.bookmark-item a,
.bookmark-item span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.todo-item.done span {
  color: var(--muted);
  text-decoration: line-through;
}

.bookmark-item a {
  color: var(--accent-dark);
  font-weight: 600;
  text-decoration: none;
}

.bookmark-item span {
  color: var(--muted);
  font-size: 12px;
}

.whiteboard-tools input[type="color"] {
  width: 34px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  padding: 2px;
}

.whiteboard-tools input[type="range"] {
  width: 120px;
}

#whiteboard-canvas {
  width: 100%;
  height: 100%;
  min-height: 520px;
  background: #ffffff;
  cursor: crosshair;
  touch-action: none;
}

@media (max-width: 760px) {
  .bookmark-entry {
    grid-template-columns: 1fr;
  }
}

.spreadsheet-grid {
  overflow: auto;
  background: var(--panel);
}

.sheet-table {
  border-collapse: collapse;
  min-width: 100%;
  table-layout: fixed;
  user-select: none;
}

.sheet-table th,
.sheet-table td {
  border: 1px solid var(--border);
  min-width: 112px;
  height: 32px;
  padding: 0;
  vertical-align: middle;
}

.sheet-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--sidebar-bg);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-align: center;
}

.sheet-row-head {
  position: sticky;
  left: 0;
  z-index: 1;
  width: 46px;
  min-width: 46px !important;
  background: var(--sidebar-bg);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.sheet-corner {
  left: 0;
  z-index: 3 !important;
}

.sheet-cell {
  width: 100%;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--ink);
  padding: 0 8px;
  outline: none;
  white-space: nowrap;
  user-select: text;
}

.sheet-cell:focus {
  box-shadow: inset 0 0 0 2px var(--accent);
  background: var(--accent-soft);
}

/* 范围选择高亮 */
td.sheet-selected {
  background: rgba(51, 117, 204, 0.12) !important;
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}

/* 公式栏 */
.spreadsheet-formula-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 24px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--sidebar-bg);
  font-size: 13px;
}

.spreadsheet-formula-bar .formula-label {
  color: var(--muted);
  font-weight: 600;
  flex-shrink: 0;
  min-width: 24px;
}

.spreadsheet-formula-bar .formula-address {
  color: var(--ink-soft);
  flex-shrink: 0;
  min-width: 48px;
  text-align: center;
  font-weight: 500;
}

.spreadsheet-formula-bar input {
  flex: 1;
  height: 30px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  font-size: 13px;
}

.editor-workspace.mode-present .preview {
  width: 100%;
  min-height: 100%;
  padding: clamp(28px, 6vw, 72px);
  border: none;
  border-radius: 0;
  font-size: 18px;
  line-height: 1.85;
}

.editor-workspace:fullscreen {
  background: var(--panel);
}

.editor-workspace:fullscreen .preview {
  height: 100vh;
}

.preview {
  min-height: 0;
  overflow-y: auto;
  padding: 24px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  line-height: 1.8;
  font-size: 15px;
  color: var(--ink);
}

.preview::-webkit-scrollbar { width: 6px; }
.preview::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.preview:empty::before {
  color: var(--muted);
  content: "预览会显示在这里";
  font-size: 14px;
}

.preview h1, .preview h2, .preview h3 {
  line-height: 1.3;
  color: var(--ink);
  font-weight: 700;
}

.preview h1 { font-size: 1.6em; margin: 0.8em 0 0.4em; border-bottom: 1px solid var(--border-soft); padding-bottom: 0.3em; }
.preview h2 { font-size: 1.35em; margin: 0.8em 0 0.4em; }
.preview h3 { font-size: 1.15em; margin: 0.7em 0 0.3em; }

.preview p { margin: 0.6em 0; }

.preview a {
  color: var(--accent);
  text-decoration: none;
}

.preview a:hover { text-decoration: underline; }

.preview pre {
  overflow-x: auto;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: #faf8f3;
  border: 1px solid var(--border-soft);
  font-size: 13px;
  line-height: 1.6;
}

.preview code {
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 0.9em;
}

.preview p code, .preview li code {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.preview blockquote {
  margin: 1em 0;
  padding: 8px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--ink-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.preview ul, .preview ol { padding-left: 1.5em; margin: 0.6em 0; }

.preview table,
.share table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
}

.preview th, .preview td,
.share th, .share td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

.preview th,
.share th { background: var(--border-soft); font-weight: 600; }

.preview img { max-width: 100%; border-radius: var(--radius-sm); }

.preview mjx-container,
.share mjx-container,
.math-block {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 4px 0;
}

.diagram {
  max-width: 100%;
  margin: 1em 0;
  overflow-x: auto;
  padding: 12px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: #fffdf8;
  text-align: center;
}

.diagram svg {
  max-width: 100%;
  height: auto;
}

.drawio-diagram {
  min-height: 240px;
}

.math-block {
  text-align: center;
}

.diagram-error {
  white-space: pre-wrap;
  color: var(--danger);
  text-align: left;
}

/* ========== Status Bar ========== */

.status {
  min-height: 32px;
  padding: 6px 24px;
  border-top: 1px solid var(--border-soft);
  background: var(--sidebar-bg);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  align-items: center;
}

/* ========== Modal ========== */

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(44, 38, 32, 0.35);
  backdrop-filter: blur(2px);
  z-index: 100;
  animation: fadeIn .15s ease;
}

@keyframes fadeIn { from { opacity: 0; } }

.modal-panel {
  display: grid;
  gap: 16px;
  width: min(420px, 100%);
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-lg);
  animation: slideUp .2s ease;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-wide {
  width: min(520px, 100%);
}

@keyframes slideUp { from { transform: translateY(12px); opacity: 0; } }

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.modal-head h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.modal-panel label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
}

.modal-panel label input, .modal-panel label select {
  padding-left: 12px;
  height: 40px;
}

.modal-panel .btn-primary { width: 100%; height: 42px; margin-top: 4px; }

/* ========== Share Pages ========== */

.share {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 32px;
  background: var(--panel);
  min-height: 100vh;
}

.share article {
  line-height: 1.8;
  font-size: 16px;
  color: var(--ink);
}

.share article h1, .share article h2, .share article h3 {
  color: var(--ink);
  font-weight: 700;
}

.share article h1 { font-size: 1.8em; border-bottom: 1px solid var(--border-soft); padding-bottom: 0.3em; }
.share article h2 { font-size: 1.4em; }
.share article h3 { font-size: 1.2em; }

.share article a { color: var(--accent); text-decoration: none; }
.share article a:hover { text-decoration: underline; }

.share article pre {
  overflow-x: auto;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: #faf8f3;
  border: 1px solid var(--border-soft);
}

.share article code {
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
}

.share article p code, .share article li code {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.share article blockquote {
  margin: 1em 0;
  padding: 8px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--ink-soft);
}

.whiteboard-share {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.whiteboard-share h2 {
  font-size: 1.4em;
  margin-bottom: 16px;
  color: var(--ink);
}

.whiteboard-share svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.share-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
}

.share-form {
  display: grid;
  gap: 16px;
  max-width: 400px;
  width: 100%;
  padding: 40px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-lg);
}

.share-form h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
}

.share-form input {
  height: 42px;
  padding-left: 14px;
}

.share-form button {
  height: 42px;
}

.share-error {
  margin: 0;
  color: var(--danger);
  font-size: 14px;
}

/* ========== Scrollbar ========== */

.sidebar::-webkit-scrollbar, .preview::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb, .preview::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ========== Responsive ========== */

@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    max-height: 50vh;
  }
  .toolbar { grid-template-columns: 1fr 1fr; }
  .editor-top { flex-wrap: wrap; }
  .path-wrap { max-width: 100%; }
  .editor-workspace.mode-split { grid-template-columns: 1fr; }
  .view-btn span { display: none; }
  .view-btn { padding: 0 10px; }
  .auth-card { padding: 32px 24px; }
  .auth-row { grid-template-columns: 1fr; }

  /* 移动端隐藏编辑工具栏 */
  .markdown-toolbar { display: none !important; }

  /* 移动端聊天激活时隐藏侧边栏 */
  .shell.chat-active .sidebar { display: none; }
  .shell.chat-active { grid-template-columns: 1fr; }

  /* 移动端聊天视图：成员放侧边栏，默认隐藏 */
  .chat-view-members-toggle { display: inline-flex; }
  .chat-view-back { display: inline-flex; flex-shrink: 0; }
  .chat-view-close-btn { display: block; }
  .chat-view-layout {
    grid-template-columns: 1fr;
  }
  .chat-view-sidebar {
    display: none;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(260px, 80vw);
    max-height: none;
    border-top: none;
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 10;
  }
  .chat-view.members-visible .chat-view-sidebar {
    display: flex;
  }
  /* 遮罩层 */
  .chat-view-members-backdrop {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(44, 38, 32, 0.35);
    z-index: 9;
  }
  .chat-view.members-visible .chat-view-members-backdrop {
    display: block;
  }
  .chat-view {
    left: 0;
  }
  .chat-view-header {
    padding: 10px 14px;
    font-size: 14px;
  }
  .chat-view-messages {
    padding: 12px 14px;
  }
  .chat-view-compose {
    padding: 8px 12px;
  }
}

@media print {
  .sidebar,
  .editor-top,
  .markdown-toolbar,
  .status,
  textarea {
    display: none !important;
  }

  .shell,
  .editor,
  .editor-workspace {
    display: block !important;
    min-height: auto;
  }

  .preview {
    display: block !important;
    border: none;
    padding: 0;
    overflow: visible;
  }
}

/* Share permission modal */
.share-perm-label {
  display: flex;
  align-items: center;
  gap: 12px;
}

.share-perm-label span {
  font-size: 14px;
  font-weight: 500;
}

.share-perm-label select {
  flex: 1;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.share-perm-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ===== Public Topics Sidebar ===== */
.topics-section {
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding-top: 8px;
}

.topics-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 12px 4px 16px;
}

.topics-section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.topics-list {
  padding: 0 8px;
}

.topic-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--ink);
  transition: background 0.15s;
  justify-content: space-between;
}

.topic-item:hover {
  background: var(--sidebar-hover);
}

.topic-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topic-item-expiry {
  font-size: 11px;
  color: var(--muted);
  flex-shrink: 0;
  margin-right: 4px;
}

.topic-expired .topic-item-name {
  opacity: 0.5;
  text-decoration: line-through;
}

.topic-expired .topic-item-expiry {
  color: var(--danger);
}

.topic-item-extend {
  font-size: 13px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  flex-shrink: 0;
}

.topic-item-extend:hover {
  background: var(--accent-soft);
}

.topic-item-copy {
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}

.topic-item-copy:hover {
  background: var(--accent-soft);
}

.topic-item-del {
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  flex-shrink: 0;
}

.topic-item-del:hover {
  color: var(--danger);
  background: rgba(220, 50, 50, 0.1);
}

.topic-item-more {
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  font-weight: bold;
  letter-spacing: 1px;
}

.topic-item-more:hover {
  color: var(--ink);
  background: var(--border-soft);
}

/* ===== Topic Detail Panel (fixed right panel) ===== */
.topic-detail-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(380px, 100%);
  height: 100dvh;
  z-index: 50;
  background: var(--sidebar-bg);
  border-left: 1px solid var(--border);
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topic-detail-panel:not(.hidden) {
  transform: translateX(0);
}

.topic-detail-panel.hidden {
  transform: translateX(100%);
}

.topic-detail-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-soft);
  flex-shrink: 0;
}

.topic-detail-panel-head h3 {
  margin: 0;
  font-size: 15px;
}

.topic-detail-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== Avatar Upload ===== */
.avatar-upload {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}

.avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--sidebar-bg);
  border: 2px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}

.avatar-upload-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: opacity 0.15s;
}

.avatar-upload-label:hover {
  opacity: 0.85;
}

.avatar-upload-label input[type="file"] {
  display: none;
}

.avatar-hint {
  font-size: 11px;
  color: var(--muted);
}