:root {
  --bg-canvas: #fcfbfa; /* Warm off-white canvas */
  --bg-sidebar: #f5f3f0; /* Slightly darker warm off-white for sidebar */
  --accent-blue: #2c5282; /* Restrained blue accent */
  --accent-blue-hover: #1a365d;
  --border-color: #e2e0db;
  --text-main: #2d3748;
  --text-muted: #596779;
  --text-secondary: var(--text-muted);
  --surface-elevated: #fff;
  --accent-soft: #eaf0f7;
  --border-strong: #cbc8c1;
  --success: #2f7d5b;
  --warning: #9a6700;
  --danger: #b42318;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 8px 24px rgba(45, 39, 31, 0.055);
  --shadow-panel: 0 12px 32px rgba(30, 41, 59, 0.12);
  --surface-muted: #eeece8;
  --bg-input: #fff;
  --backdrop: rgba(22, 26, 34, 0.52);
  --info-bg: #eaf2ff;
  --info-border: #a9c3e8;
  --warning-bg: #fff7df;
  --warning-border: #dec176;
  --danger-bg: #fff0ee;
  --danger-border: #e3aaa3;
  color-scheme: light;
  --focus-ring: 0 0 0 3px rgba(44, 82, 130, 0.18);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: Georgia, Cambria, "Times New Roman", Times, serif;
}

/* Account security, key approval, and ephemeral collaborator state. */
.recovery-ceremony,
.recovery-unlock {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-sidebar);
}

.recovery-key-output {
  min-height: 76px;
  resize: vertical;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.settings-session-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 12px 7px 28px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.settings-row-action {
  flex: none;
  font-size: 12px;
}

.collaborator-presence {
  max-width: 260px;
  padding: 5px 9px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-muted);
  background: var(--bg-sidebar);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 760px) {
  .collaborator-presence {
    max-width: 150px;
  }

  .settings-member-row,
  .settings-session-row {
    align-items: stretch;
    flex-direction: column;
  }
}

:root[data-theme="dark"] {
  --bg-canvas: #17191d;
  --bg-sidebar: #202228;
  --accent-blue: #8ab4ee;
  --accent-blue-hover: #b8d4fa;
  --border-color: #393d46;
  --border-strong: #505662;
  --text-main: #ece9e3;
  --text-muted: #b0b4bd;
  --surface-elevated: #25282e;
  --surface-muted: #30343b;
  --accent-soft: #29384d;
  --success: #76c99e;
  --warning: #e5bc61;
  --danger: #ff9187;
  --bg-input: #1c1f24;
  --backdrop: rgba(0, 0, 0, 0.68);
  --info-bg: #24364d;
  --info-border: #4e78a8;
  --warning-bg: #40361f;
  --warning-border: #8c7439;
  --danger-bg: #442725;
  --danger-border: #99534d;
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.32);
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-panel: 0 16px 46px rgba(0, 0, 0, 0.48);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    --bg-canvas: #17191d;
    --bg-sidebar: #202228;
    --accent-blue: #8ab4ee;
    --accent-blue-hover: #b8d4fa;
    --border-color: #393d46;
    --border-strong: #505662;
    --text-main: #ece9e3;
    --text-muted: #b0b4bd;
    --surface-elevated: #25282e;
    --surface-muted: #30343b;
    --accent-soft: #29384d;
    --success: #76c99e;
    --warning: #e5bc61;
    --danger: #ff9187;
    --bg-input: #1c1f24;
    --backdrop: rgba(0, 0, 0, 0.68);
    --info-bg: #24364d;
    --info-border: #4e78a8;
    --warning-bg: #40361f;
    --warning-border: #8c7439;
    --danger-bg: #442725;
    --danger-border: #99534d;
    --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.32);
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-panel: 0 16px 46px rgba(0, 0, 0, 0.48);
    color-scheme: dark;
  }
}

.auth-shell {
  display: grid;
  min-height: 100dvh;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 15%, #e7edf5 0, transparent 34%),
    var(--bg-canvas);
}

.auth-card {
  display: flex;
  width: min(100%, 430px);
  flex-direction: column;
  gap: 13px;
  padding: 34px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-panel);
}

.auth-card h1 {
  color: var(--accent-blue-hover);
  font-family: var(--font-serif);
  font-size: 34px;
}

.auth-card h2 {
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: 21px;
}

.auth-subtitle,
.auth-status,
.invite-notice {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.5;
}

.invite-notice {
  padding: 10px;
  border: 1px solid #cddbf0;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-blue-hover);
}

.auth-card input,
.member-panel input {
  width: 100%;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-main);
}

.auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.auth-card button,
.invite-btn {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid var(--accent-blue);
  border-radius: var(--radius-sm);
  background: var(--accent-blue);
  color: white;
  cursor: pointer;
}

.auth-card .secondary-btn,
.auth-card .text-btn,
.sidebar .text-btn {
  border-color: var(--border-color);
  background: white;
  color: var(--text-secondary);
}

.auth-error,
.sync-error {
  color: var(--danger);
  font-size: 12px;
  line-height: 1.4;
}

.workspace-switcher {
  display: flex;
  gap: 5px;
  margin: 0 0 12px 34px;
  overflow-x: auto;
}

.workspace-switch-btn {
  flex: none;
  padding: 4px 7px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: white;
  color: var(--text-muted);
  font-size: 10px;
  cursor: pointer;
}

.workspace-switch-btn[aria-current="true"] {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.sync-status {
  color: var(--text-muted);
  font-size: 11px;
}

.member-panel {
  display: flex;
  max-height: 190px;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
  font-size: 11px;
}

.member-row {
  overflow: hidden;
  color: var(--text-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.member-panel input {
  min-height: 32px;
  font-size: 11px;
}

.invite-btn,
.sidebar .logout-btn {
  min-height: 31px;
  font-size: 11px;
}

.invite-url {
  width: 100%;
  min-height: 58px;
  padding: 6px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 9px;
  line-height: 1.35;
  resize: vertical;
}

@media (max-width: 520px) {
  .auth-shell {
    padding: 12px;
  }

  .auth-card {
    padding: 24px 20px;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

button,
input,
textarea {
  font: inherit;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
.file-entry:focus-visible,
.outline-item:focus-visible,
.link-item:focus-visible,
.tag-item:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-main);
  font-family: var(--font-sans);
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
}

#root {
  height: 100%;
}

.app-container {
  display: flex;
  position: relative;
  height: 100%;
  width: 100%;
}

/* Sidebar Left Navigation Rail */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  position: relative;
  flex-direction: column;
  padding: 24px;
  min-width: 0;
  overflow: hidden;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 32px;
  letter-spacing: -0.5px;
}

.sidebar-heading {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.doc-entry {
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-main);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.15s ease;
}

.doc-entry.active {
  background-color: var(--border-color);
  font-weight: 500;
  color: var(--accent-blue);
}

.sidebar-footer {
  margin-top: auto;
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

/* Offline badge */
.phase-badge {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background-color: #edf2f7;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.phase-badge.phase-offline {
  background-color: #f7fafc;
  color: #4a5568;
  border-color: var(--border-color);
}

.status-area {
  font-size: 12px;
  color: var(--text-muted);
}

/* Main Content Area */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 48px 24px;
  display: flex;
  position: relative;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-width: 0;
}

.editor-container {
  width: 100%;
  max-width: 680px;
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 56px;
}

/* Document Title Input */
.document-title-input {
  border: none;
  background: transparent;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  outline: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  line-height: 1.2;
}

.document-title-input:focus {
  border-bottom-color: var(--border-color);
  box-shadow: 0 2px 0 rgba(44, 82, 130, 0.12);
}

/* Block list */
.block-list {
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 16px;
}

.block-wrapper {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  box-shadow: var(--shadow-subtle);
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.block-wrapper:focus-within {
  border-color: rgba(44, 82, 130, 0.5);
  box-shadow: var(--focus-ring), var(--shadow-subtle);
}

.block-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.block-textarea {
  width: 100%;
  min-height: 120px;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  resize: vertical;
  color: var(--text-main);
  caret-color: var(--accent-blue);
}

/* Add Block button */
.add-block-btn {
  align-self: flex-start;
  background: transparent;
  border: 1px dashed var(--accent-blue);
  color: var(--accent-blue);
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-style 0.15s ease;
}

.add-block-btn:hover {
  background-color: #ebf8ff;
  border-style: solid;
}

.error-list {
  background-color: #fff5f5;
  border: 1px solid #fed7d7;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 8px;
}

.error-item {
  font-size: 13px;
  color: #c53030;
}

/* ── Workspace File List ─────────────────────────────── */

.file-list {
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 16px;
}

.file-entry {
  display: flex;
  position: relative;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.1s;
}

.file-entry:hover {
  background-color: #e8e6e2;
}

.file-entry.active {
  background-color: var(--accent-blue);
  color: #fff;
}

.file-entry.active .file-name {
  color: #fff;
}

.file-entry.active .rename-btn,
.file-entry.active .delete-btn {
  color: #cbd5e0;
}

.file-entry.active .rename-btn:hover,
.file-entry.active .delete-btn:hover {
  color: #fff;
}

.file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-main);
}

.file-actions {
  display: none;
  gap: 4px;
  flex-shrink: 0;
}

.file-entry:hover .file-actions {
  display: flex;
  position: relative;
}

.rename-btn,
.delete-btn {
  background: none;
  border: none;
  font-size: 11px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  color: var(--text-muted);
}

.rename-btn:hover {
  color: var(--accent-blue);
  background-color: rgba(44, 82, 130, 0.1);
}

.delete-btn:hover {
  color: #c53030;
  background-color: rgba(197, 48, 48, 0.1);
}

/* ── New File Row ────────────────────────────────────── */

.new-file-row {
  display: flex;
  position: relative;
  gap: 6px;
  margin-bottom: 16px;
}

.new-file-input {
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 13px;
  background: #fff;
  color: var(--text-main);
  outline: none;
}

.new-file-input:focus {
  border-color: var(--accent-blue);
}

.new-file-btn {
  background-color: var(--accent-blue);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.new-file-btn:hover {
  background-color: var(--accent-blue-hover);
}

/* ── Empty State ─────────────────────────────────────── */

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  padding: 48px 24px;
}

/* ── Storage Error ───────────────────────────────────── */

.storage-error {
  background-color: #fff5f5;
  border: 1px solid #fed7d7;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
  color: #c53030;
  font-size: 14px;
}

.save-recovery {
  display: flex;
  width: min(calc(100% - 48px), 900px);
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 20px auto -10px;
  padding: 12px 14px;
  border: 1px solid #e7b7b2;
  border-radius: var(--radius-md);
  background: #fff4f2;
  color: #7f251d;
  font-size: 13px;
}

.save-recovery p {
  line-height: 1.45;
}

.retry-save-btn {
  flex: none;
  min-height: 36px;
  padding: 7px 12px;
  border: 1px solid #b94a40;
  border-radius: var(--radius-sm);
  background: white;
  color: #8d2d25;
  font-weight: 700;
  cursor: pointer;
}

.app-container.save-failed .ink-canvas-host canvas {
  pointer-events: none;
}

/* ── Explorer Tree ──────────────────────────────────── */

.explorer-new-btn {
  display: block;
  width: 100%;
  background: none;
  border: 1px dashed var(--accent-blue);
  color: var(--accent-blue);
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-style 0.15s ease;
  margin-bottom: 8px;
}

.asset-import-label {
  display: flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  margin-top: 6px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
}

.asset-import-input,
.vault-import-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.asset-import-label:focus-within {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

.asset-preview-image,
.asset-preview-pdf {
  display: block;
  width: 100%;
  max-height: 70vh;
  margin: 18px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  object-fit: contain;
}

.asset-preview-pdf {
  height: 70vh;
}

.asset-download {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.explorer-new-folder-btn,
.folder-rename-btn,
.folder-delete-btn {
  min-height: 34px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  cursor: pointer;
}

.explorer-new-folder-btn {
  width: 100%;
  margin-top: 6px;
}

.folder-rename-btn,
.folder-delete-btn {
  min-width: 44px;
  padding: 0 7px;
  font-size: 10px;
}

.folder-delete-btn {
  color: var(--danger);
}

.vault-import-label {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.explorer-new-btn:hover {
  background-color: #ebf8ff;
  border-style: solid;
}

.explorer-create-row {
  margin-bottom: 8px;
}

.explorer-create-input {
  width: 100%;
  border: 1px solid var(--accent-blue);
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 13px;
  background: #fff;
  color: var(--text-main);
  outline: none;
}

.explorer-folder {
  display: flex;
  position: relative;
  align-items: center;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-main);
  transition: background 0.1s;
  gap: 4px;
}

.explorer-folder-row {
  display: flex;
  align-items: center;
  gap: 3px;
}

.explorer-folder-row .explorer-folder {
  min-width: 0;
  flex: 1;
  border: 0;
  background: transparent;
  text-align: left;
}

.folder-create-btn {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.folder-create-btn:hover,
.folder-create-btn:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-blue-hover);
}

.file-select-btn {
  display: flex;
  min-width: 0;
  min-height: 30px;
  flex: 1;
  align-items: center;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.explorer-folder:hover {
  background-color: #e8e6e2;
}

.explorer-folder.active-target {
  background-color: #dbeafe;
  outline: 2px solid var(--accent-blue);
  outline-offset: -2px;
}

.explorer-toggle {
  display: inline-block;
  width: 14px;
  font-size: 10px;
  color: var(--text-muted);
  flex-shrink: 0;
  text-align: center;
}

.folder-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Inline Rename Input ────────────────────────────── */

.rename-input {
  flex: 1;
  border: 1px solid var(--accent-blue);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 13px;
  background: #fff;
  color: var(--text-main);
  outline: none;
  min-width: 0;
}

/* ── Breadcrumb ─────────────────────────────────────── */

.breadcrumb {
  width: 100%;
  max-width: 680px;
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0 12px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 16px;
  font-family: var(--font-sans);
}

/* ── Mode Bar ──────────────────────────────────────── */

.mode-bar {
  display: flex;
  position: relative;
  gap: 0;
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  align-self: flex-start;
  background: #fff;
  box-shadow: var(--shadow-subtle);
}

.mode-toggle-btn {
  background: transparent;
  border: none;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.mode-toggle-btn:hover {
  background-color: #e8e6e2;
}

.mode-toggle-btn:focus-visible {
  position: relative;
  z-index: 1;
  outline-offset: -2px;
}

.mode-toggle-btn[data-active="true"] {
  background-color: var(--accent-blue);
  color: #fff;
}

/* ── Preview Content ──────────────────────────────── */

.preview-content {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  max-width: 100%;
}

.preview-content h1,
.preview-content h2,
.preview-content h3,
.preview-content h4,
.preview-content h5,
.preview-content h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  margin: 1.5em 0 0.5em 0;
  line-height: 1.3;
}

.preview-content h1 { font-size: 28px; }
.preview-content h2 { font-size: 22px; }
.preview-content h3 { font-size: 18px; }

.preview-content p {
  margin: 0 0 1em 0;
}

.preview-content ul,
.preview-content ol {
  margin: 0 0 1em 0;
  padding-left: 2em;
}

.preview-content li {
  margin-bottom: 0.25em;
}

.preview-content blockquote {
  margin: 0 0 1em 0;
  padding: 8px 16px;
  border-left: 3px solid var(--accent-blue);
  background-color: #f7f6f4;
  color: var(--text-muted);
}

.preview-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.875em;
  background-color: #f0eeeb;
  padding: 2px 5px;
  border-radius: 3px;
}

.preview-content pre {
  margin: 0 0 1em 0;
  padding: 12px 16px;
  background-color: #f0eeeb;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.preview-content pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.5;
}

.preview-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 1.5em 0;
}

.preview-content a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.preview-content a:hover {
  color: var(--accent-blue-hover);
}

.preview-content a:focus-visible {
  border-radius: 2px;
  box-shadow: var(--focus-ring);
  outline: none;
}

/* ── Link Message ─────────────────────────────────── */

.link-message {
  display: flex;
  position: relative;
  align-items: center;
  gap: 8px;
  background-color: #fffbea;
  border: 1px solid #f0d78e;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  color: #8a6d1b;
  margin-bottom: 12px;
}

.link-message span {
  flex: 1;
}

.link-message-dismiss {
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 700;
  color: #8a6d1b;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  border-radius: 3px;
  transition: background 0.1s;
}

.link-message-dismiss:hover {
  background-color: rgba(138, 109, 27, 0.12);
}

/* ── Asset View ─────────────────────────────────────── */

.asset-view {
  width: 100%;
  max-width: 680px;
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-subtle);
}

.asset-view p {
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.6;
}

/* ── File entry adjustments for tree ────────────────── */

.file-entry {
  padding-top: 4px;
  padding-bottom: 4px;
  padding-right: 8px;
}

/* ── Responsive: narrow viewport ───────────────────── */

@media (max-width: 640px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    max-height: 50vh;
    overflow-y: auto;
    padding: 12px;
  }
  .main-content {
    padding: 24px 12px;
  }
  .brand {
    font-size: 16px;
    margin-bottom: 16px;
  }
  .preview-content {
    font-size: 15px;
  }
  .preview-content pre {
    font-size: 13px;
    padding: 8px 10px;
  }
  .mode-bar {
    width: 100%;
  }
  .mode-toggle-btn {
    flex: 1;
    text-align: center;
  }
}

/* Product workspace shell */
body {
  overflow: hidden;
}

.app-container {
  height: 100dvh;
  background: var(--bg-canvas);
}

.sidebar {
  width: 272px;
  flex: 0 0 272px;
  padding: 20px 18px 16px;
  background: color-mix(in srgb, var(--bg-sidebar) 94%, white);
  box-shadow: inset -1px 0 var(--border-color);
}

.brand {
  margin-bottom: 2px;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 23px;
  letter-spacing: -0.04em;
}

.brand::before {
  content: "I";
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  margin-right: 9px;
  border: 1px solid var(--text-main);
  border-radius: 5px;
  color: var(--accent-blue);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 800;
  vertical-align: 2px;
}

.workspace-name {
  margin: 0 0 22px 35px;
  color: var(--text-muted);
  font-size: 11px;
}

.search-container {
  margin-bottom: 18px;
}

.search-input {
  padding: 9px 11px;
  border-color: var(--border-color);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-subtle);
}

.sidebar-heading {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.file-list {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding-right: 3px;
  scrollbar-width: thin;
}

.file-entry,
.explorer-folder,
.recent-item,
.search-result-item {
  min-height: 34px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
}

.file-entry.active {
  border-color: #cad8ef;
  background: var(--accent-soft);
  color: var(--accent-blue-hover);
  box-shadow: inset 3px 0 var(--accent-blue);
}

.file-entry.active .file-name {
  color: var(--accent-blue-hover);
}

.recent-item.active {
  background: var(--surface-muted);
}

.explorer-new-btn {
  min-height: 34px;
  border-style: solid;
  background: var(--surface-elevated);
}

.sidebar-footer {
  gap: 7px;
  padding-top: 12px;
}

.phase-badge {
  color: var(--success);
  background: #edf8f1;
  border-color: #cce8d6;
}

.main-content {
  display: flex;
  min-width: 0;
  padding: 0;
  overflow-y: auto;
  background-color: var(--bg-canvas);
  background-image:
    linear-gradient(rgba(66, 73, 84, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(66, 73, 84, 0.035) 1px, transparent 1px);
  background-size: 24px 24px;
}

.workspace-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  width: 100%;
  min-height: 56px;
  align-items: center;
  gap: 14px;
  padding: 8px 18px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255, 254, 250, 0.94);
  backdrop-filter: blur(12px);
}

.workspace-topbar .breadcrumb {
  flex: 1;
  width: auto;
  max-width: none;
  min-width: 120px;
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-search-btn,
.sidebar-toggle-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  cursor: pointer;
}

.topbar-search-btn:hover,
.sidebar-toggle-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-main);
}

.sidebar-toggle-btn {
  display: none;
}

.topbar-save-status {
  position: relative;
  max-width: 170px;
  padding-left: 14px;
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-save-status::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  transform: translateY(-50%);
}

.mode-bar {
  width: auto;
  margin: 0;
  flex: none;
  border-color: var(--border-color);
}

.mode-toggle-btn {
  min-width: 62px;
  min-height: 32px;
  padding: 6px 11px;
}

.editor-container,
.asset-view,
.loading-state,
.closed-state,
.error-state,
.empty-state {
  width: min(calc(100% - 48px), 900px);
  max-width: 900px;
  margin: 30px auto 80px;
}

.editor-container {
  gap: 16px;
  padding-bottom: 0;
}

.document-header-card {
  padding: 28px 30px 22px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-card);
}

.document-title,
.document-title-input {
  width: 100%;
  margin: 0;
  color: #20242b;
  font-family: var(--font-serif);
  font-size: clamp(30px, 4vw, 43px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.document-title-input {
  padding: 3px 0 12px;
  border-bottom: 1px solid transparent;
}

.document-title-input::placeholder {
  color: #817a72;
}

.document-metadata {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 18px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.metadata-item {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 8px;
}

.metadata-tags {
  grid-column: 1 / -1;
  flex-wrap: wrap;
}

.metadata-label {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metadata-value {
  min-width: 0;
  color: var(--text-secondary);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metadata-empty {
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-style: italic;
}

.metadata-tag {
  padding: 3px 8px;
  border: 1px solid #cddbf0;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-blue-hover);
  font-size: 11px;
  cursor: pointer;
}

.block-list {
  gap: 14px;
}

.block-wrapper {
  gap: 12px;
  padding: 0;
  overflow: hidden;
  border-color: var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-card);
}

.block-wrapper:focus-within {
  border-color: rgba(36, 89, 168, 0.45);
}

.block-header {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 0 16px;
}

.block-label,
.preview-block-label {
  color: var(--accent-blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.block-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.block-wrapper:hover .block-actions,
.block-wrapper:focus-within .block-actions {
  opacity: 1;
}

.block-action-btn {
  padding: 4px 7px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  font-size: 10px;
  cursor: pointer;
}

.block-action-btn:hover:not(:disabled) {
  background: var(--surface-muted);
  color: var(--text-main);
}

.block-action-btn[data-block-action="delete"]:hover {
  color: var(--danger);
}

.block-action-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.block-textarea {
  min-height: 150px;
  padding: 0 16px 18px;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
  line-height: 1.65;
}

.markdown-source-input {
  min-height: clamp(220px, 42vh, 420px);
}

.block-math {
  border-color: #cbd3dc;
  background: #f7f9fb;
}

.math-source-input {
  min-height: 92px;
  padding-bottom: 12px;
  color: #e6edf6;
  background: #162334;
  border-radius: 0;
}

.math-source-preview,
.math-rendered-source {
  margin: 0 16px 16px;
  padding: 14px 16px;
  overflow-x: auto;
  border: 1px solid #d5dce5;
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: #253248;
  font-family: "Times New Roman", var(--font-serif);
  font-size: 18px;
  text-align: center;
  white-space: pre-wrap;
}

.block-divider {
  min-height: 82px;
}

.document-divider {
  width: calc(100% - 32px);
  height: 1px;
  margin: 9px 16px 26px;
  border: 0;
  background: var(--border-strong);
}

.block-insert-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: rgba(255, 254, 250, 0.75);
}

.block-insert-label {
  margin-right: 3px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.add-block-btn {
  align-self: auto;
  padding: 7px 11px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
}

.add-block-btn:hover {
  border-color: var(--accent-blue);
  background: var(--accent-soft);
  color: var(--accent-blue-hover);
}

.document-empty-state {
  padding: 54px 24px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 254, 250, 0.7);
  color: var(--text-muted);
  text-align: center;
}

.ink-block {
  padding: 0 12px 14px;
}

.ink-toolbar {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 0 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.ink-tool-btn,
.ink-action-btn {
  flex: none;
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--surface-elevated);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
}

.ink-tool-btn.active {
  border-color: var(--accent-blue);
  background: var(--accent-blue);
  color: white;
}

.ink-width-input {
  width: 82px;
  flex: 0 0 82px;
  accent-color: var(--accent-blue);
}

.ink-color-btn {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  border: 2px solid white;
  border-radius: 50%;
  background: #1f2937;
  box-shadow: 0 0 0 1px var(--border-strong);
  cursor: pointer;
}

.ink-color-btn[data-color="37,99,235"] {
  background: #2563eb;
}

.ink-color-btn[data-color="190,52,52"] {
  background: #be3434;
}

.ink-expand-btn {
  margin-left: auto;
}

.ink-save-state {
  flex: none;
  padding-left: 8px;
  color: var(--success);
  font-size: 10px;
  white-space: nowrap;
}

.ink-save-state[data-state="saving"] {
  color: var(--warning);
}

.ink-save-state[data-state="changed"] {
  color: var(--text-muted);
}

.ink-save-state[data-state="failed"] {
  color: var(--danger);
  font-weight: 700;
}

.ink-canvas-host {
  position: relative;
  width: 100%;
  height: 330px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #fffdf8;
  background-image: radial-gradient(#d9d3c9 0.7px, transparent 0.7px);
  background-size: 18px 18px;
}

.ink-canvas-host > canvas[id^="ink-canvas-"] {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  outline: none;
}

.block-wrapper.expanded {
  position: fixed;
  inset: 18px;
  z-index: 500;
  max-height: calc(100dvh - 36px);
  background: var(--surface-elevated);
  box-shadow: 0 24px 80px rgba(28, 35, 45, 0.3);
}

.block-wrapper.expanded .ink-canvas-host {
  height: calc(100dvh - 125px);
}

.preview-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 16px;
}

.preview-block {
  min-width: 0;
}

.preview-markdown {
  padding: 2px 24px;
  border-left: 2px solid transparent;
}

.preview-math,
.preview-ink {
  padding: 14px 14px 2px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-card);
}

.preview-math .math-rendered-source {
  margin: 10px 0 12px;
}

.preview-ink .ink-block {
  padding: 10px 0 12px;
}

.ink-preview canvas {
  pointer-events: none;
}

.inspector {
  width: 320px;
  flex: 0 0 320px;
  padding: 18px 16px;
  background: var(--bg-sidebar);
  box-shadow: inset 1px 0 var(--border-color);
}

.inspector-tabs {
  gap: 4px;
  margin-bottom: 15px;
  overflow-x: auto;
}

.inspector-header {
  display: flex;
  flex: none;
  align-items: flex-start;
  gap: 4px;
}

.inspector-header .inspector-tabs {
  min-width: 0;
  flex: 1;
}

.inspector-tab {
  flex: none;
  padding: 7px 8px 9px;
  border: 0;
  background: transparent;
}

.inspector-section {
  gap: 7px;
}

.link-item,
.outline-item,
.tag-item {
  border: 1px solid transparent;
}

.link-item {
  padding: 10px;
  background: var(--surface-elevated);
  box-shadow: var(--shadow-subtle);
}

.backlink-context {
  color: var(--text-muted);
}

.graph-header {
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
}

.graph-empty-state {
  padding: 12px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.5;
}

.local-graph {
  display: block;
  width: 100%;
  min-height: 264px;
  overflow: visible;
}

.local-graph-wrap {
  position: relative;
  width: 100%;
}

.graph-node-hit {
  position: absolute;
  z-index: 2;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%);
}

.graph-node-hit:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

.local-graph-edge {
  stroke: #8593a5;
  stroke-width: 1.35;
}

.local-graph-node {
  cursor: pointer;
}

.local-graph-node circle {
  fill: #dbe5f4;
  stroke: #7791b8;
  stroke-width: 1.5;
  transition: transform 0.15s ease, fill 0.15s ease;
  transform-box: fill-box;
  transform-origin: center;
}

.local-graph-node.backlink circle {
  fill: #e8dfd2;
  stroke: #a88453;
}

.local-graph-node.connected circle {
  fill: #d9ecdf;
  stroke: #57916b;
}

.local-graph-node.active circle {
  fill: var(--accent-blue);
  stroke: #173f78;
  stroke-width: 2;
}

.local-graph-node:hover circle,
.local-graph-node:focus circle {
  transform: scale(1.12);
}

.local-graph-node text {
  fill: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 10px;
  pointer-events: none;
}

.local-graph-node.active text {
  fill: var(--accent-blue-hover);
  font-weight: 700;
}

.drawer-backdrop {
  display: none;
}

@media (max-width: 1180px) {
  .inspector {
    display: flex;
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 420;
    width: min(340px, 88vw);
    transform: translateX(105%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-panel);
  }

  .inspector.open {
    display: flex;
    position: fixed;
    transform: translateX(0);
  }

  .toggle-inspector-btn {
    display: inline-block;
  }

  .drawer-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 400;
    border: 0;
    background: rgba(33, 38, 46, 0.28);
    backdrop-filter: blur(2px);
  }
}

@media (max-width: 760px) {
  .app-container {
    display: block;
  }

  .sidebar {
    display: flex;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 430;
    width: min(320px, 88vw);
    max-height: none;
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-panel);
  }

  .app-container.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .main-content {
    width: 100%;
    height: 100dvh;
  }

  .workspace-topbar {
    min-height: 58px;
    gap: 9px;
    padding: 8px 10px;
  }

  .sidebar-toggle-btn {
    display: inline-block;
    padding: 0 9px;
  }

  .topbar-search-btn,
  .topbar-save-status {
    display: none;
  }

  .topbar-actions {
    gap: 6px;
  }

  .workspace-topbar .mode-bar {
    width: auto;
  }

  .mode-toggle-btn {
    min-width: 51px;
    padding: 5px 8px;
    font-size: 11px;
  }

  .editor-container,
  .asset-view,
  .loading-state,
  .closed-state,
  .error-state,
  .empty-state {
    width: calc(100% - 20px);
    margin: 16px auto 52px;
  }

  .document-header-card {
    padding: 21px 18px 17px;
  }

  .document-title,
  .document-title-input {
    font-size: 30px;
  }

  .document-metadata {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metadata-item:nth-child(3) {
    display: none;
  }

  .block-actions {
    opacity: 1;
  }

  .block-action-btn[data-block-action="move-up"],
  .block-action-btn[data-block-action="move-down"] {
    display: none;
  }

  .block-textarea {
    min-height: 130px;
    padding-right: 13px;
    padding-left: 13px;
  }

  .block-insert-control {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .block-insert-label {
    width: 100%;
  }

  .ink-toolbar {
    padding-bottom: 8px;
  }

  .ink-canvas-host {
    height: 285px;
  }

  .ink-expand-btn {
    margin-left: 0;
  }

  .ink-save-state {
    margin-left: auto;
  }

  .preview-markdown {
    padding-right: 10px;
    padding-left: 10px;
  }

  .inspector.open {
    width: min(350px, 92vw);
    max-width: none;
    padding: 16px;
  }
}

/* Deliberate reading mode: one composed paper surface, not disabled editor cards. */
.main-content.preview-mode {
  background: #ebe7df;
}

.preview-reader {
  width: min(calc(100% - 40px), 980px);
  max-width: 980px;
  gap: 0;
  margin-top: 24px;
}

.preview-document-header {
  padding: 42px 52px 0;
  border: 1px solid #d8d2c8;
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
  background: #fffefa;
  box-shadow: 0 18px 46px rgba(55, 48, 38, 0.09);
}

.preview-document-type {
  display: block;
  margin-bottom: 11px;
  color: #8b7354;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.preview-document-header .document-title {
  max-width: 780px;
  color: #24211d;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.02;
}

.preview-document-header .document-metadata {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 18px;
  padding-top: 0;
  border-top: 0;
}

.preview-document-header .metadata-item {
  gap: 6px;
}

.preview-document-header .metadata-tags {
  display: flex !important;
  flex: 1 1 100%;
  margin-top: 2px;
}

.preview-document-header .metadata-tag {
  padding: 2px 8px;
  border-color: #d8d0c3;
  background: #f4efe6;
  color: #705b40;
}

.preview-header-rule {
  height: 1px;
  margin: 28px 0 0;
  border: 0;
  background: #ddd6ca;
}

.preview-reader .preview-content {
  gap: 0;
  padding: 0 52px 58px;
  border: 1px solid #d8d2c8;
  border-top: 0;
  border-radius: 0 0 14px 14px;
  background: #fffefa;
  color: #34302a;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.68;
  box-shadow: 0 18px 46px rgba(55, 48, 38, 0.09);
}

.preview-reader .preview-markdown {
  padding: 25px 0 4px;
  border: 0;
}

.preview-reader .preview-markdown:first-child {
  padding-top: 22px;
}

.preview-reader .preview-content h1,
.preview-reader .preview-content h2,
.preview-reader .preview-content h3,
.preview-reader .preview-content h4 {
  color: #29251f;
  font-family: var(--font-serif);
  letter-spacing: -0.02em;
}

.preview-reader .preview-content h1 {
  margin-top: 0.95em;
  font-size: 32px;
}

.preview-reader .preview-content h2 {
  margin-top: 1.3em;
  padding-bottom: 7px;
  border-bottom: 1px solid #e5dfd5;
  font-size: 25px;
}

.preview-reader .preview-content h3 {
  font-size: 20px;
}

.preview-reader .preview-content p {
  margin-bottom: 0.85em;
}

.preview-reader .preview-content ul,
.preview-reader .preview-content ol {
  margin-bottom: 1em;
  padding-left: 1.55em;
}

.preview-reader .preview-content li {
  margin-bottom: 0.2em;
  padding-left: 0.15em;
}

.preview-reader .preview-content blockquote {
  margin: 1.15em 0;
  padding: 12px 18px;
  border-left: 3px solid #9b805d;
  background: #f7f2e9;
  color: #655c51;
  font-style: italic;
}

.preview-reader .preview-content code {
  border: 1px solid #e1dbd0;
  background: #f3efe8;
  color: #514535;
}

.preview-reader .preview-content pre {
  margin: 1.1em 0;
  padding: 16px 18px;
  border-color: #d9d2c7;
  background: #282c33;
  color: #edf0f4;
}

.preview-reader .preview-content pre code {
  border: 0;
  color: inherit;
}

.preview-reader .preview-content a {
  color: #315f91;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.preview-reader .preview-content table {
  width: 100%;
  margin: 1.25em 0;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 14px;
}

.preview-reader .preview-content th,
.preview-reader .preview-content td {
  padding: 9px 11px;
  border: 1px solid #dcd5ca;
  overflow-wrap: anywhere;
  text-align: left;
}

.preview-reader .preview-content th {
  background: #f2ede5;
  color: #51493f;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.preview-reader .preview-math,
.preview-reader .preview-ink {
  margin: 24px 0 10px;
  padding: 16px;
  border: 1px solid #d9d2c7;
  border-radius: 10px;
  background: #fbf8f2;
  box-shadow: 0 5px 16px rgba(55, 48, 38, 0.055);
}

.preview-reader .preview-block-label {
  color: #8b7354;
}

.math-display {
  min-height: 72px;
  margin-top: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  display: grid;
  place-items: center;
  border-radius: 7px;
  background: #fffefa;
  color: #252d3b;
}

.math-display math {
  min-width: min(100%, 420px);
  font-size: 1.35rem;
}

.math-empty {
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 13px;
  font-style: italic;
}

.preview-ink-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.preview-ink-expand {
  min-height: 30px;
  padding: 5px 11px;
  border: 1px solid #d4ccbf;
  border-radius: 6px;
  background: #fffefa;
  color: #665844;
  font-size: 11px;
  cursor: pointer;
}

.preview-ink-expand:hover,
.preview-ink-expand:focus-visible {
  border-color: #8b7354;
  color: #3d3327;
}

.preview-reader .preview-ink .ink-block {
  padding: 10px 0 0;
}

.preview-reader .preview-ink .ink-canvas-host {
  height: 350px;
  border-color: #d8d0c3;
  background-color: #fffefa;
  background-image: none;
}

.ink-preview canvas {
  pointer-events: none;
  cursor: default !important;
}

.preview-reader .preview-divider {
  padding: 9px 0;
}

.preview-reader .preview-divider .document-divider {
  width: 100%;
  margin: 24px 0;
  background: #d9d2c7;
}

.preview-ink.expanded {
  display: flex;
  position: fixed;
  inset: 18px;
  z-index: 500;
  flex-direction: column;
  margin: 0;
  padding: 18px;
  border-radius: 14px;
  background: #fbf8f2;
  box-shadow: 0 24px 80px rgba(28, 35, 45, 0.34);
}

.preview-ink.expanded .ink-block {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
}

.preview-ink.expanded .ink-canvas-host {
  height: auto;
  min-height: 0;
  flex: 1;
}

.preview-ink.expanded .ink-preview canvas {
  pointer-events: auto;
  cursor: grab !important;
}

.main-content.ink-expanded {
  overflow: hidden;
}

.document-title-input:focus-visible,
.block-textarea:focus-visible,
.ink-block:focus-within .ink-canvas-host {
  outline: 2px solid rgba(44, 82, 130, 0.62);
  outline-offset: 3px;
}

@media (max-width: 760px) {
  .main-content.preview-mode {
    background: #f2eee7;
  }

  .preview-reader {
    width: calc(100% - 16px);
    margin-top: 10px;
  }

  .preview-document-header {
    padding: 28px 22px 0;
    border-radius: 10px 10px 0 0;
  }

  .preview-document-header .document-title {
    font-size: 36px;
  }

  .preview-document-header .document-metadata {
    gap: 7px 14px;
  }

  .preview-header-rule {
    margin-top: 20px;
  }

  .preview-reader .preview-content {
    padding: 0 22px 38px;
    border-radius: 0 0 10px 10px;
    font-size: 16px;
  }

  .preview-reader .preview-math,
  .preview-reader .preview-ink {
    margin-right: -8px;
    margin-left: -8px;
    padding: 12px;
  }

  .preview-reader .preview-ink .ink-canvas-host {
    height: 265px;
  }

  .preview-ink.expanded {
    inset: 0;
    padding: 12px;
    border: 0;
    border-radius: 0;
  }

  .preview-ink.expanded .ink-canvas-host {
    height: auto;
  }
}

@media (max-width: 430px) {
  .workspace-topbar .breadcrumb {
    display: none;
  }

  .topbar-actions {
    margin-left: auto;
  }

  .document-metadata {
    grid-template-columns: 1fr;
  }

  .metadata-tags {
    grid-column: 1;
  }

  .ink-canvas-host {
    height: 250px;
  }
}

/* ── Search & Recent Notes Styles ──────────────────── */

.search-container {
  margin-bottom: 20px;
}

.search-input {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: #fff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: var(--focus-ring);
}

.search-status {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  padding: 0 4px;
}

.search-no-results {
  font-size: 13px;
  color: var(--text-muted);
  padding: 16px 8px;
  text-align: center;
}

.search-result-item {
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 4px;
  cursor: pointer;
  background-color: transparent;
  transition: background-color 0.15s ease;
  width: 100%;
  border: 1px solid transparent;
  color: inherit;
  text-align: left;
}

.search-result-item:hover {
  background-color: rgba(44, 82, 130, 0.05);
}

.search-result-item.highlighted {
  background-color: rgba(44, 82, 130, 0.1);
  outline: 1px solid rgba(44, 82, 130, 0.2);
}

.search-result-item.active {
  background-color: var(--border-color);
}

.search-result-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 2px;
}

.search-result-path {
  font-size: 11px;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 4px;
}

.search-result-snippet {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-highlight {
  background-color: #fef08a; /* Soft yellow highlight */
  color: #1e293b;
  border-radius: 2px;
  padding: 0 2px;
  font-weight: 500;
}

/* Recent Notes */
.recent-heading {
  display: flex;
  position: relative;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  margin-top: 8px;
}

.recent-clear-btn {
  background: none;
  border: none;
  font-size: 10px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.recent-clear-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--text-main);
}

.recent-list {
  max-height: 172px;
  margin-bottom: 16px;
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.recent-item {
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  background-color: transparent;
  transition: background-color 0.15s ease;
  width: 100%;
  border: 1px solid transparent;
  color: inherit;
  text-align: left;
}

.recent-item:hover {
  background-color: rgba(44, 82, 130, 0.05);
}

.recent-item.active {
  background-color: var(--border-color);
  font-weight: 500;
}

.recent-item-name {
  display: block;
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 1px;
}

.recent-item-path {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Inspector / Knowledge Sidebar */
.inspector {
  width: 280px;
  background-color: var(--bg-sidebar);
  border-left: 1px solid var(--border-color);
  display: flex;
  position: relative;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
  min-width: 0;
}

.inspector-tabs {
  display: flex;
  position: relative;
  gap: 16px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 16px;
  flex-shrink: 0;
}

.inspector-tab {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  padding-bottom: 8px;
  border-bottom: 2px solid transparent;
}

.inspector-tab:hover {
  color: var(--text-main);
}

.inspector-tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

.inspector-section {
  display: flex;
  position: relative;
  flex-direction: column;
  gap: 8px;
}

.inspector-section h4 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-top: 12px;
  margin-bottom: 4px;
}

.outline-item {
  font-size: 13px;
  color: var(--text-main);
  cursor: pointer;
  padding: 4px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 4px;
  transition: color 0.15s ease, background 0.15s ease;
}

button.outline-item,
button.link-item,
button.tag-item {
  width: 100%;
  font-family: inherit;
  text-align: left;
}
.outline-item:hover {
  color: var(--accent-blue);
  text-decoration: underline;
}

.link-item {
  font-size: 13px;
  color: var(--accent-blue);
  cursor: pointer;
  padding: 4px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 5px;
  padding: 7px 8px;
  background: rgba(255, 255, 255, 0.55);
}
.link-item:hover {
  text-decoration: none;
  background: #fff;
}
.link-item.missing {
  color: #c53030;
  text-decoration: underline dashed;
}
.link-item.ambiguous, .wikilink.ambiguous { color: #9c5b00; text-decoration: underline dotted; }
.wikilink { font-weight: 500; }
.wikilink.missing { color: #c53030; text-decoration: underline dashed; }
.outline-item.active { color: var(--accent-blue); font-weight: 600; background: rgba(44, 82, 130, 0.08); }
.backlink-context { color: var(--text-muted); font-size: 11px; white-space: pre-line; margin-top: 2px; }

.tag-item {
  display: flex;
  position: relative;
  justify-content: space-between;
  font-size: 13px;
  padding: 4px 8px;
  background-color: #e2e8f0;
  border-radius: 4px;
  cursor: pointer;
  margin-bottom: 4px;
  border: 1px solid transparent;
}
.tag-item:hover {
  background-color: #cbd5e0;
  border-color: #b8c2cf;
}
.tag-name {
  font-weight: 500;
}
.tag-count {
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .inspector {
    display: none;
  }
}

.active-tag-filter {
  display: flex;
  position: relative;
  align-items: center;
  background-color: #dbeafe;
  color: var(--accent-blue-hover);
  padding: 6px 8px;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  justify-content: space-between;
}

.clear-tag-btn {
  background: none;
  border: none;
  color: var(--accent-blue-hover);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0 4px;
}

.clear-tag-btn:hover {
  color: #1e3a5f;
}

.inspector-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 0.5rem;
    margin-top: 1rem;
}

@media (max-width: 900px) {
  .inspector.open {
    display: flex;
  position: relative;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(280px, 85vw);
    z-index: 100;
    background: var(--bg-sidebar);
    box-shadow: var(--shadow-panel);
  }
}

.toggle-inspector-btn {
  display: none;
}
.inspector-close-btn {
  margin-left: auto;
  padding: 2px 8px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}
.inspector-close-btn:hover {
  background: rgba(44, 82, 130, 0.08);
  color: var(--accent-blue);
}
@media (max-width: 900px) {
  .toggle-inspector-btn {
    display: inline-block;
  }
}

.inspector a, .inspector span, .inspector .link-item, .inspector .outline-item {
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}

.backlink-context {
  line-height: 1.45;
  padding-top: 4px;
}

.loading-state,
.closed-state,
.error-state {
  width: min(100%, 680px);
  padding: 32px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: #fff;
  color: var(--text-muted);
  box-shadow: var(--shadow-subtle);
}

@media (max-width: 640px) {
  .sidebar {
    max-height: 42vh;
    flex-shrink: 0;
  }
  .main-content {
    justify-content: flex-start;
    min-height: 0;
  }
  .editor-container {
    gap: 18px;
    padding-bottom: 32px;
  }
  .document-title-input {
    font-size: 27px;
  }
  .block-wrapper {
    padding: 13px;
  }
  .inspector.open {
    max-width: 88vw;
    padding: 18px;
  }
}

/* Final responsive precedence over legacy component rules. */
.inspector {
  width: 320px;
  flex: 0 0 320px;
  padding: 18px 16px;
  background: var(--bg-sidebar);
  box-shadow: inset 1px 0 var(--border-color);
}

.inspector-tabs {
  gap: 4px;
  overflow-x: auto;
}

.inspector-tab {
  flex: none;
  padding: 7px 8px 9px;
  border: 0;
  background: transparent;
}

@media (max-width: 1180px) {
  .inspector,
  .inspector.open {
    display: flex;
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 420;
    width: min(340px, 88vw);
    max-width: none;
    padding: 18px 16px;
    transform: translateX(105%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-panel);
  }

  .inspector {
    visibility: hidden;
    pointer-events: none;
  }

  .inspector.open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .toggle-inspector-btn {
    display: inline-block;
  }
}

@media (max-width: 760px) {
  .app-container {
    display: block;
  }

  .sidebar {
    display: flex;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 430;
    width: min(320px, 88vw);
    max-height: none;
    height: 100dvh;
    padding: 20px 18px 16px;
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow-panel);
    visibility: hidden;
    pointer-events: none;
  }

  .app-container.sidebar-open .sidebar {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .main-content {
    width: 100%;
    height: 100dvh;
    min-height: 0;
    padding: 0;
  }

  .inspector.open {
    width: min(350px, 92vw);
    max-width: none;
    padding: 16px;
  }

  .ink-toolbar {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .ink-tool-btn,
  .ink-action-btn {
    min-height: 38px;
  }

  .ink-color-btn {
    width: 30px;
    height: 30px;
    flex-basis: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .inspector,
  .local-graph-node circle {
    transition: none;
  }
}

/* Theme, auth, and vault settings integration. */
.auth-shell {
  background:
    radial-gradient(circle at 20% 15%, color-mix(in srgb, var(--accent-blue) 13%, transparent) 0, transparent 34%),
    var(--bg-canvas);
}

.auth-card {
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
  color: var(--text-main);
}

.auth-card h1,
.auth-card h2 {
  color: var(--text-main);
}

.auth-card label,
.auth-field label,
.invite-form label {
  color: var(--text-main);
  font-size: 13px;
  font-weight: 650;
}

.auth-field {
  display: grid;
  gap: 5px;
}

.auth-help,
.settings-note {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.45;
}

.invite-notice {
  border-color: var(--info-border);
  background: var(--info-bg);
  color: var(--text-main);
}

.auth-card input,
.invite-form input,
.invite-form select,
.invite-url,
.new-file-input,
.explorer-create-input,
.rename-input,
.search-input {
  border-color: var(--border-color);
  background: var(--bg-input);
  color: var(--text-main);
}

.auth-card .secondary-btn,
.auth-card .text-btn,
.sidebar .text-btn,
.workspace-switch-btn,
.mode-bar,
.topbar-search-btn,
.sidebar-toggle-btn,
.settings-open-btn {
  background: var(--surface-elevated);
  color: var(--text-secondary);
}

button:disabled,
.unavailable-action:disabled {
  opacity: 0.58;
  cursor: not-allowed;
}

.loading-status::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: settings-spin 0.8s linear infinite;
}

@keyframes settings-spin {
  to { transform: rotate(360deg); }
}

.theme-control-label {
  margin-top: 7px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.theme-control {
  display: inline-flex;
  align-self: flex-start;
  padding: 3px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--surface-muted);
}

.theme-choice {
  min-height: 36px;
  padding: 6px 12px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.theme-choice[aria-pressed="true"] {
  background: var(--surface-elevated);
  color: var(--text-main);
  box-shadow: var(--shadow-subtle);
}

.settings-open-btn {
  width: 100%;
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
}

.settings-backdrop {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--backdrop);
  backdrop-filter: blur(3px);
}

.settings-dialog {
  display: flex;
  width: min(960px, 100%);
  height: min(720px, calc(100dvh - 48px));
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: var(--surface-elevated);
  color: var(--text-main);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.36);
}

.settings-header {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px 14px 24px;
  border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
  font-family: var(--font-serif);
  font-size: 23px;
}

.settings-header p {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 12px;
}

.settings-close-btn,
.copy-invite-btn,
.unavailable-action {
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-main);
  cursor: pointer;
}

.settings-layout {
  display: grid;
  min-height: 0;
  flex: 1;
  grid-template-columns: 245px minmax(0, 1fr);
}

.settings-categories {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
  overflow-y: auto;
  padding: 18px 12px;
  border-right: 1px solid var(--border-color);
  background: var(--bg-sidebar);
}

.settings-category {
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--text-muted);
  text-align: left;
  cursor: pointer;
}

.settings-category:hover,
.settings-category.active {
  background: var(--accent-soft);
  color: var(--text-main);
}

.settings-category.active {
  border-color: color-mix(in srgb, var(--accent-blue) 35%, var(--border-color));
  box-shadow: inset 3px 0 var(--accent-blue);
  font-weight: 700;
}

.settings-content {
  min-width: 0;
  overflow-y: auto;
  padding: clamp(24px, 4vw, 42px);
  overflow-wrap: anywhere;
}

.settings-content h3 {
  margin-bottom: 9px;
  font-family: var(--font-serif);
  font-size: 28px;
}

.settings-description {
  max-width: 680px;
  margin-bottom: 24px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.settings-details {
  display: grid;
  grid-template-columns: minmax(100px, 150px) minmax(0, 1fr);
  gap: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.settings-details dt,
.settings-details dd {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
}

.settings-details dt {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
}

.settings-details dd {
  margin: 0;
}

.settings-member-list {
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.settings-member-row {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--border-color);
}

.settings-member-row:last-child {
  border-bottom: 0;
}

.member-role {
  flex: none;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--text-muted);
  font-size: 11px;
  text-transform: capitalize;
}

.invite-form {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-sidebar);
}

.invite-form input,
.invite-form select {
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.invite-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.invite-options > div {
  display: grid;
  gap: 6px;
}

.invite-form .invite-btn {
  justify-self: start;
  min-height: 42px;
  margin-top: 5px;
}

.settings-content .invite-url {
  min-height: 88px;
  margin-top: 14px;
  padding: 10px;
  font-size: 11px;
  overflow-wrap: anywhere;
}

.copy-invite-btn {
  margin-top: 8px;
}

.copy-status {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 12px;
}

.settings-error {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  background: var(--danger-bg);
  color: var(--danger);
  font-size: 12px;
}

.settings-warning,
.settings-status-card {
  padding: 14px 16px;
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-md);
  background: var(--warning-bg);
  color: var(--text-main);
  font-size: 13px;
  line-height: 1.55;
}

.settings-status-card {
  border-color: var(--info-border);
  background: var(--info-bg);
}

/* Semantic Markdown extensions emitted by markdown_render. */
.md-highlight {
  padding: 0.05em 0.18em;
  border-radius: 3px;
  background: #ffe58a;
  color: #29230e;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.md-callout {
  --callout-color: var(--accent-blue);
  --callout-bg: var(--info-bg);
  margin: 1.2em 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--callout-color) 52%, var(--border-color));
  border-left: 4px solid var(--callout-color);
  border-radius: 8px;
  background: var(--callout-bg);
  color: var(--text-main);
}

.md-callout-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 13px;
  border-bottom: 1px solid color-mix(in srgb, var(--callout-color) 25%, transparent);
  font-family: var(--font-sans);
}

.md-callout-type {
  color: var(--callout-color);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.md-callout-title-text {
  font-weight: 700;
}

.md-callout-content {
  padding: 12px 14px 2px;
}

.md-callout-note,
.md-callout-info,
.md-callout-todo,
.md-callout-abstract { --callout-color: #3975b7; }
.md-callout-tip,
.md-callout-success { --callout-color: #287a52; --callout-bg: color-mix(in srgb, var(--success) 13%, var(--surface-elevated)); }
.md-callout-question,
.md-callout-warning { --callout-color: #9a6700; --callout-bg: var(--warning-bg); }
.md-callout-failure,
.md-callout-danger,
.md-callout-bug { --callout-color: #b83b31; --callout-bg: var(--danger-bg); }
.md-callout-example { --callout-color: #7654b5; --callout-bg: color-mix(in srgb, #7654b5 11%, var(--surface-elevated)); }
.md-callout-quote,
.md-callout-neutral { --callout-color: var(--text-muted); --callout-bg: var(--surface-muted); }

.md-color-red { color: #b42318; }
.md-color-orange { color: #a84f08; }
.md-color-yellow { color: #7a5b00; }
.md-color-green { color: #287a52; }
.md-color-blue { color: #2868a9; }
.md-color-purple { color: #7654b5; }
.md-color-pink { color: #a83f76; }
.md-color-gray { color: #5f6875; }

.md-bg-red,
.md-bg-orange,
.md-bg-yellow,
.md-bg-green,
.md-bg-blue,
.md-bg-purple,
.md-bg-pink,
.md-bg-gray {
  padding: 0.05em 0.18em;
  border-radius: 3px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.md-bg-red { background: #ffe1dd; }
.md-bg-orange { background: #ffe8cf; }
.md-bg-yellow { background: #fff0a8; }
.md-bg-green { background: #d9f2e4; }
.md-bg-blue { background: #dcecff; }
.md-bg-purple { background: #ece3ff; }
.md-bg-pink { background: #f9dfec; }
.md-bg-gray { background: #e8e9ec; }

.syntax-highlighting {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
}

.syntax-highlighting code {
  color: var(--text-main);
}

:root[data-theme="dark"] .md-highlight {
  background: #775f16;
  color: #fff4be;
}

:root[data-theme="dark"] .md-color-red { color: #ff9187; }
:root[data-theme="dark"] .md-color-orange { color: #f2a65a; }
:root[data-theme="dark"] .md-color-yellow { color: #e5c565; }
:root[data-theme="dark"] .md-color-green { color: #76c99e; }
:root[data-theme="dark"] .md-color-blue { color: #8ab4ee; }
:root[data-theme="dark"] .md-color-purple { color: #c5a8ff; }
:root[data-theme="dark"] .md-color-pink { color: #f0a1cb; }
:root[data-theme="dark"] .md-color-gray { color: #b0b4bd; }
:root[data-theme="dark"] .md-bg-red { background: #5a2c2a; }
:root[data-theme="dark"] .md-bg-orange { background: #53371f; }
:root[data-theme="dark"] .md-bg-yellow { background: #51451e; }
:root[data-theme="dark"] .md-bg-green { background: #244737; }
:root[data-theme="dark"] .md-bg-blue { background: #273f5d; }
:root[data-theme="dark"] .md-bg-purple { background: #41325d; }
:root[data-theme="dark"] .md-bg-pink { background: #523047; }
:root[data-theme="dark"] .md-bg-gray { background: #3a3e46; }

:root[data-theme="dark"] .workspace-topbar,
:root[data-theme="dark"] .block-insert-control,
:root[data-theme="dark"] .document-empty-state {
  background-color: color-mix(in srgb, var(--surface-elevated) 92%, transparent);
}

:root[data-theme="dark"] .document-title,
:root[data-theme="dark"] .document-title-input,
:root[data-theme="dark"] .math-source-preview,
:root[data-theme="dark"] .math-rendered-source {
  color: var(--text-main);
}

:root[data-theme="dark"] .block-math,
:root[data-theme="dark"] .loading-state,
:root[data-theme="dark"] .closed-state,
:root[data-theme="dark"] .error-state,
:root[data-theme="dark"] .asset-view {
  background: var(--surface-elevated);
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .md-highlight { background: #775f16; color: #fff4be; }
  :root[data-theme="system"] .md-color-red { color: #ff9187; }
  :root[data-theme="system"] .md-color-orange { color: #f2a65a; }
  :root[data-theme="system"] .md-color-yellow { color: #e5c565; }
  :root[data-theme="system"] .md-color-green { color: #76c99e; }
  :root[data-theme="system"] .md-color-blue { color: #8ab4ee; }
  :root[data-theme="system"] .md-color-purple { color: #c5a8ff; }
  :root[data-theme="system"] .md-color-pink { color: #f0a1cb; }
  :root[data-theme="system"] .md-color-gray { color: #b0b4bd; }
  :root[data-theme="system"] .md-bg-red { background: #5a2c2a; }
  :root[data-theme="system"] .md-bg-orange { background: #53371f; }
  :root[data-theme="system"] .md-bg-yellow { background: #51451e; }
  :root[data-theme="system"] .md-bg-green { background: #244737; }
  :root[data-theme="system"] .md-bg-blue { background: #273f5d; }
  :root[data-theme="system"] .md-bg-purple { background: #41325d; }
  :root[data-theme="system"] .md-bg-pink { background: #523047; }
  :root[data-theme="system"] .md-bg-gray { background: #3a3e46; }
  :root[data-theme="system"] .workspace-topbar,
  :root[data-theme="system"] .block-insert-control,
  :root[data-theme="system"] .document-empty-state { background-color: color-mix(in srgb, var(--surface-elevated) 92%, transparent); }
  :root[data-theme="system"] .document-title,
  :root[data-theme="system"] .document-title-input,
  :root[data-theme="system"] .math-source-preview,
  :root[data-theme="system"] .math-rendered-source { color: var(--text-main); }
  :root[data-theme="system"] .block-math,
  :root[data-theme="system"] .loading-state,
  :root[data-theme="system"] .closed-state,
  :root[data-theme="system"] .error-state,
  :root[data-theme="system"] .asset-view { background: var(--surface-elevated); }
}

@media (max-width: 680px) {
  .settings-backdrop {
    padding: 0;
  }

  .settings-dialog {
    width: 100%;
    height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .settings-header {
    min-height: 64px;
    padding: 10px 12px 10px 16px;
  }

  .settings-layout {
    display: flex;
    flex-direction: column;
  }

  .settings-categories {
    flex: none;
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 8px;
    border-right: 0;
    border-bottom: 1px solid var(--border-color);
    scrollbar-width: thin;
  }

  .settings-category {
    min-height: 44px;
    flex: none;
    white-space: nowrap;
  }

  .settings-category.active {
    box-shadow: inset 0 -3px var(--accent-blue);
  }

  .settings-content {
    padding: 22px 16px 40px;
  }

  .settings-content h3 {
    font-size: 24px;
  }

  .invite-options {
    grid-template-columns: 1fr;
  }

  .settings-details {
    grid-template-columns: 1fr;
  }

  .settings-details dt {
    padding-bottom: 4px;
    border-bottom: 0;
  }

  .settings-details dd {
    padding-top: 0;
  }

  .auth-card button,
  .settings-dialog button,
  .sidebar button {
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .loading-status::before { animation: none; }
}