/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  --sidebar-bg: #2b303a;
  --sidebar-bg-alt: #232830;
  --topbar-bg: #23272f;
  --sidebar-fg: #c7ccd4;
  --sidebar-fg-dim: #8b929e;
  --sidebar-hover: #353b47;
  --sidebar-active: #171a20;
  --sidebar-rule: #3a404c;

  --accent: #3ecfab;
  --accent-hover: #55dcbb;
  --accent-ink: #0e2a25;
  --danger: #d9534f;
  --danger-hover: #e26562;
  --muted-btn: #4b5261;
  --muted-btn-hover: #58606f;

  --canvas: #ffffff;
  --canvas-rule: #e3e6ea;
  --ink: #1f2328;
  --ink-dim: #6a737d;

  --editor-fg: #24292f;
  --editor-font: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --editor-size: 14px;

  --sidebar-width: 256px;
  --radius: 6px;
  --shadow: 0 12px 32px rgba(15, 20, 28, 0.28);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--topbar-bg);
  overflow: hidden;
}

body.app-loading .app { opacity: 0; }
.app { opacity: 1; transition: opacity 120ms ease; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.icon {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: currentColor;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  height: 100vh;
  height: 100dvh;
}

.app.sidebar-hidden { grid-template-columns: 0 1fr; }
.app.sidebar-hidden .sidebar { visibility: hidden; }

/* Every link in the chain from .app down to .pane needs min-height: 0, because a
   grid item defaults to min-height: auto and refuses to shrink below its
   content. One missing link and the whole column grows to the document height
   instead of scrolling inside the viewport. */
.main {
  display: grid;
  grid-template-rows: 52px auto minmax(0, 1fr) 30px;
  min-width: 0;
  min-height: 0;
  background: var(--canvas);
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  border-right: 1px solid #1b1f26;
}

.sidebar-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding-bottom: 8px;
}

.side-group { border-bottom: 1px solid var(--sidebar-rule); }

/* The header is a row, not a single button: the Documents section needs its own
   action buttons, and a button cannot legally contain another button. */
.side-group-head {
  display: flex;
  align-items: center;
  padding: 4px 8px 4px 12px;
  color: var(--sidebar-fg-dim);
}

.side-group-toggle,
.side-group-chevron {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
}

.side-group-toggle { flex: 1 1 auto; min-width: 0; }
.side-group-toggle > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-group-chevron { flex: 0 0 auto; padding: 7px 4px; }

.side-group-head:hover { color: var(--sidebar-fg); }
.side-group-head .chevron { transition: transform 140ms ease; }
.side-group.collapsed .chevron { transform: rotate(-90deg); }
.side-group.collapsed .side-group-body { display: none; }

.side-head-actions { display: flex; flex: 0 0 auto; gap: 2px; }

.side-icon-btn {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  padding: 0;
  color: var(--sidebar-fg-dim);
  background: none;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}

.side-icon-btn:hover { color: var(--accent); background: var(--sidebar-hover); }

.side-group-body { padding: 0 6px 10px; }

.side-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: 4px;
  font-size: 13px;
}

.side-row-label {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-link {
  font: inherit;
  font-size: 12px;
  color: var(--accent);
  background: none;
  border: 0;
  padding: 2px 4px;
  cursor: pointer;
  border-radius: 4px;
}

.side-link:hover { background: var(--sidebar-hover); text-decoration: underline; }

.side-select {
  width: 100%;
  padding: 6px 8px;
  font: inherit;
  font-size: 13px;
  color: var(--sidebar-fg);
  background: var(--sidebar-bg-alt);
  border: 1px solid var(--sidebar-rule);
  border-radius: 4px;
}

.side-select:disabled { opacity: 0.5; }

.side-add {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  margin-top: 4px;
  padding: 7px 8px;
  font: inherit;
  font-size: 13px;
  color: var(--accent);
  background: none;
  border: 1px dashed var(--sidebar-rule);
  border-radius: 4px;
  cursor: pointer;
}

.side-add:hover { background: var(--sidebar-hover); border-color: var(--accent); }

.side-empty {
  margin: 4px 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--sidebar-fg-dim);
}

/* Repository list */
.repo-list, .doc-tree {
  margin: 0;
  padding: 0;
  list-style: none;
}

.repo-item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 8px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
}

.repo-item:hover { background: var(--sidebar-hover); }
.repo-item.active { background: var(--sidebar-active); color: #fff; }
.repo-item.active .repo-name { color: var(--accent); }

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

.repo-owner { color: var(--sidebar-fg-dim); }
.repo-item .icon-lock { width: 12px; height: 12px; color: var(--sidebar-fg-dim); }

.repo-remove {
  flex: 0 0 auto;
  padding: 0 2px;
  font: inherit;
  font-size: 14px;
  line-height: 1;
  color: var(--sidebar-fg-dim);
  background: none;
  border: 0;
  cursor: pointer;
  opacity: 0;
}

.repo-item:hover .repo-remove { opacity: 1; }
.repo-remove:hover { color: var(--danger-hover); }

/* Bookmarks */
.bookmark-list { margin: 0; padding: 0; list-style: none; }

.bookmark-item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
}

.bookmark-item:hover { background: var(--sidebar-hover); }
.bookmark-item.active { background: var(--sidebar-active); color: #fff; }
.bookmark-item.active .bookmark-name { color: var(--accent); }
.bookmark-item > .icon { color: var(--accent); }

.bookmark-meta { flex: 1 1 auto; min-width: 0; }

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

.bookmark-where {
  font-size: 11px;
  color: var(--sidebar-fg-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bookmark-remove {
  flex: 0 0 auto;
  padding: 0 2px;
  font: inherit;
  font-size: 14px;
  line-height: 1;
  color: var(--sidebar-fg-dim);
  background: none;
  border: 0;
  cursor: pointer;
  opacity: 0;
}

.bookmark-item:hover .bookmark-remove { opacity: 1; }
.bookmark-remove:hover { color: var(--danger-hover); }

.bookmark-item.missing .bookmark-name { text-decoration: line-through; opacity: 0.65; }

/* The header toggle reads as filled once the document is pinned. */
#toggle-bookmark.active { color: var(--accent); background: rgba(62, 207, 171, 0.14); }

/* Document tree */
.tree-filter { padding: 2px 2px 8px; }

.tree-filter input {
  width: 100%;
  padding: 6px 8px;
  font: inherit;
  font-size: 12px;
  color: var(--sidebar-fg);
  background: var(--sidebar-bg-alt);
  border: 1px solid var(--sidebar-rule);
  border-radius: 4px;
}

.tree-filter input::placeholder { color: var(--sidebar-fg-dim); }

.tree-node {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

.tree-node:hover { background: var(--sidebar-hover); }
.tree-node.active { background: var(--sidebar-active); color: #fff; }
.tree-node.active .icon { color: var(--accent); }
.tree-node.drop-target { background: rgba(62, 207, 171, 0.18); outline: 1px dashed var(--accent); }
.tree-node.dragging { opacity: 0.45; }

.tree-label {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-node .icon { color: var(--sidebar-fg-dim); }
.tree-node.is-dir .icon { color: #7f8794; }
.tree-node .dirty-dot { width: 8px; height: 8px; color: var(--accent); }

.tree-children { margin: 0; padding: 0; list-style: none; }
.tree-item.collapsed > .tree-children { display: none; }
.tree-item.collapsed > .tree-node .twisty { transform: rotate(-90deg); }

.twisty {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  color: var(--sidebar-fg-dim);
  transition: transform 120ms ease;
}

.twisty-spacer { width: 12px; flex: 0 0 auto; }

/* Sidebar action buttons */
.sidebar-actions {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--sidebar-rule);
  background: var(--sidebar-bg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 12px;
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--muted-btn);
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 120ms ease, opacity 120ms ease;
}

.btn:hover:not(:disabled) { background: var(--muted-btn-hover); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-accent { color: var(--accent-ink); background: var(--accent); font-weight: 600; }
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); }
.btn-danger { background: var(--danger); }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }
.btn-ghost { color: var(--ink-dim); background: transparent; }
.btn-ghost:hover:not(:disabled) { background: #eceef1; color: var(--ink); }

.btn.is-busy { position: relative; color: transparent; }
.btn.is-busy::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

.btn-accent.is-busy::after { border-color: rgba(14, 42, 37, 0.3); border-top-color: var(--accent-ink); }

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

/* ── Top bar ─────────────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  background: var(--topbar-bg);
  color: var(--sidebar-fg);
}

.topbar-spacer { flex: 1 1 auto; }

.brand {
  margin-left: 6px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  color: var(--sidebar-fg);
  background: none;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
}

.icon-btn:hover { color: var(--accent); background: rgba(255, 255, 255, 0.07); }
.icon-btn.active { color: var(--accent); background: rgba(62, 207, 171, 0.14); }
.icon-btn.small { width: 26px; height: 26px; color: var(--ink-dim); }
.icon-btn.small:hover { color: var(--ink); background: #eceef1; }

.top-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  font: inherit;
  font-size: 13px;
  color: var(--sidebar-fg);
  background: none;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
}

.top-btn:hover, .top-btn[aria-expanded="true"] { color: var(--accent); background: rgba(255, 255, 255, 0.07); }

/* Export menu */
.menu-wrap { position: relative; }

.menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 40;
  min-width: 208px;
  padding: 6px;
  background: #fff;
  border: 1px solid #d7dbe0;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
  color: var(--ink);
  background: none;
  border: 0;
  border-radius: 5px;
  cursor: pointer;
  text-align: left;
}

.menu-item:hover { background: #f2f4f6; }
.menu-item .icon { color: var(--ink-dim); }
.menu-item small { display: block; color: var(--ink-dim); font-size: 11px; }
.menu-sep { height: 1px; margin: 5px 6px; background: #e6e9ec; }

/* ── Document header ─────────────────────────────────────────────────────── */
.doc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--canvas);
  border-bottom: 1px solid var(--canvas-rule);
}

.doc-title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-status {
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: #f0f2f4;
  border-radius: 999px;
  white-space: nowrap;
}

.doc-status.is-dirty { color: #8a5300; background: #fff3d6; }
.doc-status.is-saved { color: #14684f; background: #dcf5ec; }

.doc-location {
  font-size: 12px;
  color: var(--ink-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 52ch;
}

.location-link { color: var(--ink-dim); text-decoration: none; }
.location-link:hover { color: #0969da; text-decoration: underline; }
.location-sep { opacity: 0.55; }

/* Anchors styled as icon buttons need the disabled state spelled out, since
   :disabled does not apply to them. */
.icon-btn.is-disabled {
  opacity: 0.35;
  pointer-events: none;
  cursor: default;
}

.icon-btn:disabled { opacity: 0.35; cursor: default; }
.icon-btn.is-busy .icon { animation: spin 700ms linear infinite; }

/* Link out to a connected repository, next to its disconnect button. */
.repo-open {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  color: var(--sidebar-fg-dim);
  border-radius: 3px;
  opacity: 0;
}

.repo-open .icon { width: 12px; height: 12px; }
.repo-item:hover .repo-open { opacity: 1; }
.repo-open:hover { color: var(--accent); background: var(--sidebar-hover); }

/* ── Panes ───────────────────────────────────────────────────────────────── */
.panes {
  display: grid;
  grid-template-columns: var(--editor-fraction, 1fr) 5px minmax(0, 1fr);
  min-height: 0;
  background: var(--canvas);
}

.app.view-editor .panes { grid-template-columns: 1fr 0 0; }
.app.view-editor .pane-divider,
.app.view-editor .pane-preview { display: none; }

.app.view-preview .panes { grid-template-columns: 0 0 1fr; }
.app.view-preview .pane-divider,
.app.view-preview .pane-editor { display: none; }

/* min-height: 0 is load-bearing. A grid item defaults to min-height: auto, which
   refuses to shrink below its content, so the pane would grow past its grid row
   and `overflow: auto` would never engage — the overflow ends up clipped by
   `body { overflow: hidden }` and becomes unreachable. */
.pane {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
}

.pane-editor { border-right: 1px solid var(--canvas-rule); }

.editor {
  display: block;
  width: 100%;
  min-height: 100%;
  padding: 18px 20px 40vh;
  font-family: var(--editor-font);
  font-size: var(--editor-size);
  line-height: 1.65;
  color: var(--editor-fg);
  background: var(--canvas);
  border: 0;
  outline: none;
  resize: none;
  tab-size: 2;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.editor::placeholder { color: #b6bcc4; }
.editor.drop-active { background: #f2fbf8; box-shadow: inset 0 0 0 2px var(--accent); }

.pane-divider {
  cursor: col-resize;
  background: var(--canvas-rule);
  transition: background 120ms ease;
}

.pane-divider:hover, .pane-divider:focus-visible { background: var(--accent); outline: none; }

.pane-preview { background: var(--canvas); }
.pane-preview .markdown-body { padding: 18px 24px 40vh; }

.preview-empty {
  color: var(--ink-dim);
  font-style: italic;
}

/* ── Status bar ──────────────────────────────────────────────────────────── */
.statusbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  font-size: 12px;
  color: var(--ink-dim);
  background: #fafbfc;
  border-top: 1px solid var(--canvas-rule);
}

/* ── Dialogs ─────────────────────────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(18, 22, 28, 0.55);
}

.dialog {
  position: fixed;
  z-index: 60;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(440px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  padding: 22px;
  background: #fff;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.dialog-wide { width: min(620px, calc(100vw - 32px)); }

.dialog h2 { margin: 0 0 6px; font-size: 17px; }
.dialog h3 { margin: 20px 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-dim); }
.dialog-hint { margin: 0 0 14px; font-size: 13px; line-height: 1.5; color: var(--ink-dim); }
.dialog-error { margin: 10px 0 0; font-size: 13px; color: #b42318; }
.dialog-rule { margin: 18px 0; border: 0; border-top: 1px solid var(--canvas-rule); }

.dialog input[type="text"],
.dialog input[type="search"],
.dialog select {
  width: 100%;
  padding: 9px 11px;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #ccd2d9;
  border-radius: var(--radius);
}

.dialog input:focus, .dialog select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(62, 207, 171, 0.22);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.field-label {
  display: block;
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-dim);
}

.setting-row { margin-bottom: 14px; }
.setting-check { display: flex; align-items: center; gap: 8px; }
.setting-check label { font-size: 13px; margin: 0; }
.setting-check input { width: 16px; height: 16px; accent-color: var(--accent); }

/* Repository picker */
.repo-picker {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  max-height: 46vh;
  overflow-y: auto;
  border: 1px solid var(--canvas-rule);
  border-radius: var(--radius);
}

.picker-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid #f0f2f4;
}

.picker-item:last-child { border-bottom: 0; }
.picker-item .picker-meta { flex: 1 1 auto; min-width: 0; }
.picker-name { font-size: 13px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.picker-sub { font-size: 11px; color: var(--ink-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.pill {
  padding: 1px 7px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  border: 1px solid #d7dbe0;
  border-radius: 999px;
  white-space: nowrap;
}

.pill-private { color: #8a5300; border-color: #f0d9a8; background: #fff8e8; }
.pill-readonly { color: #b42318; border-color: #f3c6c2; background: #fdf0ef; }

.picker-btn {
  padding: 6px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent);
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
}

.picker-btn.connected { color: var(--ink-dim); background: #eceef1; }
.picker-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.picker-loading, .picker-none { padding: 18px; text-align: center; font-size: 13px; color: var(--ink-dim); }

/* Help */
.help-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.help-table td { padding: 5px 0; vertical-align: top; }
.help-table td:first-child { width: 42%; color: var(--ink-dim); }
.help-list { margin: 0; padding-left: 20px; font-size: 13px; line-height: 1.65; }
.help-list li { margin-bottom: 6px; }

kbd {
  padding: 1px 5px;
  font-family: var(--editor-font);
  font-size: 11px;
  background: #f2f4f6;
  border: 1px solid #d7dbe0;
  border-bottom-width: 2px;
  border-radius: 4px;
}

/* ── Toasts ──────────────────────────────────────────────────────────────── */
.toasts {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 70;
  display: grid;
  gap: 8px;
  max-width: min(400px, calc(100vw - 32px));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 14px;
  font-size: 13px;
  line-height: 1.45;
  color: #fff;
  background: #2f353f;
  border-radius: 8px;
  box-shadow: var(--shadow);
  animation: toast-in 160ms ease;
}

.toast.ok { background: #17654f; }
.toast.error { background: #98221c; }
.toast a { color: #fff; text-decoration: underline; }

.toast-close {
  padding: 0 2px;
  font: inherit;
  font-size: 15px;
  line-height: 1;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  opacity: 0.7;
}

.toast-close:hover { opacity: 1; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ── Login page ──────────────────────────────────────────────────────────── */
.login-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px;
  background: radial-gradient(circle at 30% 10%, #313947 0%, #21252c 60%);
  overflow: auto;
}

.login-card {
  width: min(420px, 100%);
  padding: 34px 32px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(10, 14, 20, 0.4);
}

.login-brand {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: #16a888;
}

.login-card h1 { margin: 0 0 10px; font-size: 22px; }
.login-card p { margin: 0 0 18px; font-size: 14px; line-height: 1.6; color: var(--ink-dim); }

.login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  padding: 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: #24292f;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
}

.login-btn:hover { background: #32383f; }

.login-note {
  margin: 18px 0 0 !important;
  padding-top: 16px;
  font-size: 12px !important;
  border-top: 1px solid var(--canvas-rule);
}

.login-error {
  margin: 0 0 18px;
  padding: 11px 13px;
  font-size: 13px;
  color: #b42318;
  background: #fdf0ef;
  border: 1px solid #f3c6c2;
  border-radius: var(--radius);
}

.login-setup {
  margin: 0 0 18px;
  padding: 13px;
  font-size: 12.5px;
  line-height: 1.6;
  color: #8a5300;
  background: #fff8e8;
  border: 1px solid #f0d9a8;
  border-radius: var(--radius);
}

.login-setup code {
  font-family: var(--editor-font);
  font-size: 11.5px;
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 4px;
  border-radius: 3px;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .app { grid-template-columns: 0 1fr; }
  .sidebar {
    position: fixed;
    z-index: 45;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--sidebar-width);
    box-shadow: var(--shadow);
  }
  .app.sidebar-hidden .sidebar { transform: translateX(-100%); }
  .app:not(.sidebar-hidden) .sidebar { visibility: visible; }
  .panes { grid-template-columns: 1fr !important; }
  .pane-divider { display: none; }
  .app:not(.view-preview) .pane-preview { display: none; }
  .app.view-preview .pane-editor { display: none; }
  .brand { display: none; }
  .top-btn span { display: none; }
}

@media print {
  .sidebar, .topbar, .doc-header, .statusbar, .pane-editor, .pane-divider, .toasts { display: none !important; }
  body, .app, .main, .panes, .pane-preview { display: block !important; height: auto !important; overflow: visible !important; }
  .pane-preview .markdown-body { padding: 0 !important; max-width: none !important; }
}