/* ============================================================
   Design tokens — dark mode default, light mode via media query
   ============================================================ */
:root {
  --bg:          #f5f5f5;
  --bg-raised:   #ffffff;
  --bg-cell:     #ffffff;
  --bg-input:    #f7f7f7;
  --line:        #e1e1e1;
  --line-soft:   #ececec;
  --text:        #201f1e;
  --text-dim:    #525252;
  --text-faint:  #797775;
  --accent:      #0078d4;
  --accent-dim:  #106ebe;
  --accent-bg:   rgba(0,120,212,.06);
  --accent-text: #ffffff;
  --ok:          #107c10;
  --ok-bg:       rgba(16,124,16,.06);
  --err:         #d13438;
  --err-bg:      rgba(209,52,56,.06);
  --pending:     #ffb900;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ui:   "Sora", "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --r:    8px;
  --r-lg: 12px;
  --shadow-sm: 0 1px 0 rgba(7,20,21,.2), 0 8px 24px rgba(7,20,21,.25);
  --shadow-md: 0 6px 20px rgba(7,20,21,.35);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:          #f5f5f5;
    --bg-raised:   #ffffff;
    --bg-cell:     #ffffff;
    --bg-input:    #f7f7f7;
    --line:        #e1e1e1;
    --line-soft:   #ececec;
    --text:        #201f1e;
    --text-dim:    #525252;
    --text-faint:  #797775;
    --accent:      #0078d4;
    --accent-dim:  #106ebe;
    --accent-bg:   rgba(0,120,212,.06);
    --accent-text: #ffffff;
    --ok:          #107c10;
    --ok-bg:       rgba(16,124,16,.06);
    --err:         #d13438;
    --err-bg:      rgba(209,52,56,.06);
    --pending:     #ffb900;
  }
}

/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

/* Tell the browser we're handling colours ourselves — prevents WebView/system
   dark-mode from overriding textarea/input backgrounds and text colours. */
:root { color-scheme: dark; }
@media (prefers-color-scheme: light) { :root { color-scheme: light; } }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 4px;
  transition: background 0.2s;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}
#app.locked {
  filter: blur(1px);
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   Top bar
   ============================================================ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  height: 48px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 7px;
}
.brand .mark {
  color: var(--accent);
  letter-spacing: -0.5px;
  font-size: 13px;
  line-height: 1;
  font-weight: 700;
  background: var(--accent-bg);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 3px 6px;
  border-radius: 7px;
}
.brand .name {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  color: var(--text);
}

/* Status pill */
.status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 10.5px;
  padding: 3px 9px;
  border-radius: 99px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  background: var(--bg);
  transition: color 0.2s, border-color 0.2s;
}
.status::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
  opacity: 0.7;
}
.status.ok      { color: var(--ok);      border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.status.error   { color: var(--err);     border-color: color-mix(in srgb, var(--err) 30%, transparent); }
.status.pending { color: var(--pending); border-color: color-mix(in srgb, var(--pending) 30%, transparent); }
.status.pending::before { animation: blink 1.4s ease-in-out infinite; }

@keyframes blink { 0%, 100% { opacity: 0.7; } 50% { opacity: 0.15; } }

/* ============================================================
   Toolbar
   ============================================================ */
.toolbar {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
  flex-shrink: 0;
}
.toolbar .spacer { flex: 1; }
.toolbar-sep {
  width: 1px;
  height: 18px;
  background: var(--line);
  margin: 0 3px;
  flex-shrink: 0;
}

.toolbar button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r);
  padding: 5px 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
  line-height: 1.4;
}
.toolbar button:hover {
  background: var(--bg-input);
  color: var(--text);
}
.toolbar button.icon {
  padding: 5px 7px;
  min-width: 28px;
  justify-content: center;
  font-size: 13px;
}

/* Primary button */
#btn-run-all {
  background: var(--accent);
  color: var(--accent-text);
  border-color: transparent;
  font-weight: 600;
  padding: 5px 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,.1);
}
#btn-run-all:hover {
  background: var(--accent-dim);
  color: #ffffff;
  border-color: transparent;
}

/* ============================================================
   Settings panel
   ============================================================ */
.settings {
  display: none;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(21,28,36,.6), rgba(21,28,36,0));
  flex-shrink: 0;
}
.settings.open { display: block; }

.settings label {
  display: block;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-faint);
  margin-bottom: 7px;
}
.settings-row { display: flex; gap: 7px; }

.settings input {
  flex: 1;
  font-family: var(--mono);
  font-size: 11.5px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: var(--r);
  padding: 6px 9px;
  transition: border-color 0.15s;
}
.settings input:focus { outline: none; border-color: var(--accent); }

#btn-connect {
  font-family: var(--ui);
  font-weight: 600;
  font-size: 12px;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: var(--r);
  padding: 6px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s;
}
#btn-connect:hover { opacity: 0.85; }

.hint {
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1.6;
  margin-top: 9px;
}
.hint code {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  background: var(--line-soft);
  padding: 1px 4px;
  border-radius: 3px;
}

.account-panel {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.account-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-dim);
  font-size: 11.5px;
  font-weight: 600;
}

.account-status {
  min-width: 0;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 10.5px;
  text-align: right;
  overflow-wrap: anywhere;
}
.account-status.ok { color: var(--ok); }
.account-status.err { color: var(--err); }

.account-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
}

.account-form label {
  color: var(--text-faint);
  font-size: 10.5px;
  font-weight: 700;
  line-height: 1.2;
  margin-top: 4px;
  text-transform: uppercase;
}

.account-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.account-actions button {
  flex: 1;
  font-family: var(--ui);
  font-weight: 600;
  font-size: 12px;
  border-radius: var(--r);
  min-height: 34px;
  padding: 7px 10px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

#btn-login {
  background: var(--accent);
  color: var(--accent-text);
  border: 1px solid transparent;
}

#btn-create-account {
  background: var(--bg-input);
  color: var(--text-dim);
  border: 1px solid var(--line);
}

.sign-out-btn {
  width: 100%;
  font-family: var(--ui);
  font-weight: 600;
  font-size: 12px;
  background: var(--bg-input);
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 6px 10px;
  cursor: pointer;
}
.sign-out-btn:hover {
  color: var(--err);
  border-color: color-mix(in srgb, var(--err) 35%, var(--line));
}

.auth-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 5000;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
}
.auth-overlay.open { display: flex; }

.auth-dialog {
  width: min(100%, 380px);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 16px 42px rgba(0,0,0,.18);
  padding: 20px;
}

.auth-brand {
  margin-bottom: 18px;
}

.auth-dialog h1 {
  margin: 0 0 5px;
  color: var(--text);
  font-size: 20px;
  line-height: 1.2;
  font-weight: 700;
}

.auth-subtitle {
  margin: 0 0 16px;
  color: var(--text-faint);
  font-size: 12px;
  line-height: 1.45;
}

.auth-dialog .account-form input {
  width: 100%;
  min-height: 36px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--text);
  font-family: var(--ui);
  font-size: 13px;
  padding: 8px 10px;
  transition: border-color 0.12s, background 0.12s;
}

.auth-dialog .account-form input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-cell);
}

.auth-message {
  min-height: 20px;
  margin: 12px 0 0;
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1.5;
}
.auth-message.err { color: var(--err); }

.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 4500;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 74px 14px 14px;
  background: rgba(0,0,0,.08);
}
.popup-overlay.open { display: flex; }

.popup-dialog {
  width: min(100%, 380px);
  max-height: min(620px, calc(100vh - 96px));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 16px 42px rgba(0,0,0,.18);
}

.popup-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

.popup-head h2 {
  margin: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.2;
}

.close-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-faint);
  border-radius: var(--r);
  cursor: pointer;
  font-size: 18px;
  width: 28px;
  height: 28px;
}
.close-btn:hover { background: var(--bg-input); color: var(--text); }

.popup-view {
  display: none;
  overflow-y: auto;
  padding: 14px;
}
.popup-view.active { display: block; }

.setting-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-faint);
  font-size: 12px;
}
.setting-line strong {
  color: var(--text);
  font-family: var(--mono);
  font-size: 10.5px;
  text-align: right;
  overflow-wrap: anywhere;
}

.wide-btn {
  width: 100%;
  min-height: 34px;
  margin-top: 10px;
  font-family: var(--ui);
  font-weight: 600;
  font-size: 12px;
  background: var(--accent);
  color: var(--accent-text);
  border: 1px solid transparent;
  border-radius: var(--r);
  cursor: pointer;
}
.wide-btn.quiet {
  background: var(--bg-input);
  color: var(--text-dim);
  border-color: var(--line);
}

.popup-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}
.popup-actions .wide-btn { margin-top: 0; }

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

.session-item {
  display: grid;
  gap: 3px;
  width: 100%;
  text-align: left;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--text);
  padding: 9px 10px;
  cursor: pointer;
}
.session-item:hover { border-color: var(--accent); background: var(--accent-bg); }
.session-title {
  font-weight: 700;
  font-size: 12.5px;
  overflow-wrap: anywhere;
}
.session-meta {
  color: var(--text-faint);
  font-size: 10.5px;
}

.empty-state {
  color: var(--text-faint);
  font-size: 12px;
  margin: 8px 0;
}
.empty-state.err { color: var(--err); }

.command-list {
  display: grid;
  gap: 10px;
}
.command-list div {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}
.command-list code {
  color: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  white-space: pre-wrap;
}
.command-list span {
  color: var(--text-faint);
  font-size: 11.5px;
}

.popup-message {
  min-height: 20px;
  margin: 0;
  padding: 0 14px 12px;
  color: var(--text-faint);
  font-size: 11px;
}
.popup-message.ok { color: var(--ok); }
.popup-message.err { color: var(--err); }

/* ============================================================
   Cells
   ============================================================ */
#cells {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scroll-behavior: smooth;
}

.cell {
  display: grid;
  grid-template-columns: 26px 1fr 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--bg-cell);
  overflow: visible;
  transition: border-color 0.15s;
  box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 2px 4px rgba(0,0,0,.02);
}
.cell:focus-within { border-color: color-mix(in srgb, var(--line) 60%, var(--text-dim)); }
.cell.running      { border-color: var(--accent); }

/* Gutter */
.cell-gutter {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 10px 0 0;
  border-right: 1px solid var(--line-soft);
  background: var(--bg);
}

.run-btn {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-size: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.run-btn:hover,
.cell.running .run-btn {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}
.cell.running .run-btn { animation: blink 1.2s ease-in-out infinite; }

/* Main content */
.cell-main {
  min-width: 0;
  padding: 10px 12px;
}

.code-editor-wrapper {
  position: relative;
  max-height: 400px;
  overflow-y: auto;
  border-radius: var(--r);
}

.suggestions-panel {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  max-height: 200px;
  overflow-y: auto;
  background: var(--bg-cell);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
  z-index: 1000;
  margin-top: 0;
}

.suggestions-panel.visible {
  display: block;
}

.suggestion-item {
  padding: 8px 10px;
  cursor: pointer;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.1s;
}

.suggestion-item:hover,
.suggestion-item.selected {
  background: var(--accent-bg);
}

.suggestion-label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.suggestion-desc {
  font-family: var(--ui);
  font-size: 10.5px;
  color: var(--text-faint);
  font-style: italic;
}

.suggestion-params {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}

.suggestion-param {
  max-width: 100%;
  padding: 2px 6px;
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  background: var(--bg-input);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.code {
  width: 100%;
  resize: none;
  border: none;
  background: var(--bg-cell) !important;
  color: var(--text) !important;
  caret-color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  padding: 0;
  tab-size: 4;
  -webkit-appearance: none;
  appearance: none;
  min-height: 52px;
  display: block;
  overflow-x: auto;
  overflow-y: auto;
  word-wrap: normal;
  white-space: pre;
}
.code:focus { outline: none; }
.code::selection { background: color-mix(in srgb, var(--accent) 25%, transparent); }
.code::placeholder { color: var(--text-faint); opacity: 0.8; }

/* Cell actions — fade in on hover */
.cell-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  justify-content: flex-start;
  padding: 8px 0;
  opacity: 0;
  transition: opacity 0.15s;
}
.cell:hover .cell-actions { opacity: 1; }

.cell-actions button {
  width: 18px;
  height: 18px;
  border: none;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  transition: color 0.1s, background 0.1s;
}
.cell-actions button:hover { color: var(--text); background: var(--line-soft); }
.del-cell:hover { color: var(--err) !important; background: var(--err-bg) !important; }

/* ============================================================
   Output
   ============================================================ */
.output {
  margin-top: 6px;
  max-height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
}
.output:empty { display: none; }

.output pre {
  margin: 4px 0;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}
.stream.stdout { color: var(--text); }
.stream.stderr { color: #e0954a; }

.result {
  padding: 6px 8px;
  border-radius: 8px;
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  color: var(--text);
  font-size: 12px;
}

.error {
  color: var(--err);
  background: var(--err-bg);
  border: 1px solid color-mix(in srgb, var(--err) 35%, transparent);
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 12px;
}

.html-out {
  padding: 8px;
  border-radius: 10px;
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  overflow: auto;
  color: var(--text);
}

.img-out {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line-soft);
}

/* ============================================================
   DataFrame preview
   ============================================================ */
.df-out {
  margin-top: 8px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  max-height: 300px;
  overflow-y: auto;
  overflow-x: auto;
}

.df-meta {
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 6px;
  font-weight: 500;
}

.df-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11.5px;
  color: var(--text);
}

.df-table th,
.df-table td {
  border-bottom: 1px solid var(--line-soft);
  padding: 4px 6px;
  text-align: left;
  white-space: nowrap;
}

.df-table th {
  color: var(--text);
  font-weight: 600;
  background: var(--bg);
}

.df-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 8px 0 6px;
}

.anchor-input {
  flex: 0 0 64px;
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 4px 6px;
}

.push-btn {
  font-family: var(--ui);
  font-size: 12px;
  font-weight: 600;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}

.push-btn:hover { background: var(--accent-dim); }

.df-note {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 4px;
}

.df-note.err { color: var(--err); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: 8px 12px;
  border-top: 1px solid var(--line);
  background: var(--bg-raised);
  color: var(--text-faint);
  font-size: 11px;
}

.footer kbd {
  font-family: var(--mono);
  font-size: 10px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 4px;
}

@media (max-width: 520px) {
  .topbar { height: 44px; }
  .toolbar { flex-wrap: wrap; gap: 6px; }
  .toolbar .spacer { display: none; }
  .toolbar-sep { display: none; }
  .cell { grid-template-columns: 24px 1fr 18px; }
  .cell-actions { opacity: 1; }
}
.result        { color: var(--text); }

.error {
  color: var(--err);
  background: var(--err-bg);
  border-left: 2px solid var(--err);
  padding: 7px 10px;
  border-radius: 0 var(--r) var(--r) 0;
  margin: 4px 0;
}

.html-out { overflow-x: auto; font-size: 11.5px; line-height: 1.4; }
.html-out table { border-collapse: collapse; }
.html-out th, .html-out td { border: 1px solid var(--line); padding: 3px 8px; }
.img-out { max-width: 100%; border-radius: var(--r); margin: 6px 0; display: block; }

/* ============================================================
   DataFrame preview
   ============================================================ */
.df-out {
  margin: 6px 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.df-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-faint);
  padding: 5px 10px;
  background: var(--bg);
  border-bottom: 1px solid var(--line-soft);
}
.df-meta span { color: var(--accent); font-weight: 600; }

.df-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 11px;
  display: block;
  overflow-x: auto;
}
.df-table th, .df-table td {
  border-bottom: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  padding: 4px 10px;
  text-align: left;
  white-space: nowrap;
}
.df-table th {
  color: var(--text-dim);
  background: var(--bg-input);
  font-weight: 600;
  position: sticky;
  top: 0;
}
.df-table td { color: var(--text); }
.df-table tr:last-child td { border-bottom: none; }
.df-table td:last-child,
.df-table th:last-child { border-right: none; }

.df-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg);
}
.anchor-input {
  width: 68px;
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: var(--r);
  padding: 4px 8px;
  transition: border-color 0.15s;
}
.anchor-input:focus { outline: none; border-color: var(--accent); }

.push-btn {
  font-family: var(--ui);
  font-weight: 600;
  font-size: 11px;
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: var(--r);
  padding: 4px 12px;
  cursor: pointer;
  transition: opacity 0.15s;
}
.push-btn:hover { opacity: 0.85; }

.df-note {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ok);
  padding: 4px 10px;
  border-top: 1px solid var(--line-soft);
}
.df-note:empty { display: none; }
.df-note.err { color: var(--err); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  padding: 5px 14px;
  font-size: 10px;
  color: var(--text-faint);
  background: var(--bg-raised);
  flex-shrink: 0;
}
kbd {
  font-family: var(--mono);
  font-size: 9px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1px 4px;
  color: var(--text-dim);
}

/* ============================================================
   Scrollbars
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
::-webkit-scrollbar-track { background: transparent; }

/* ============================================================
   Workspace: sidebar + main panel two-column layout
   ============================================================ */
.workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* Topbar additions */
.topbar-right {
  display: flex;
  align-items: center;
  gap: 2px;
}

.tb-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r);
  color: var(--text-faint);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  flex-shrink: 0;
}
.tb-icon:hover { background: var(--bg-input); color: var(--text); }

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
  width: 148px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  background: var(--bg-raised);
  overflow-y: auto;
  overflow-x: hidden;
  transition: width 0.18s ease;
  display: flex;
  flex-direction: column;
}
.sidebar.collapsed { width: 0; }

.sidebar-inner {
  min-width: 148px;
  padding: 6px 0 12px;
}

.sidebar-section {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line-soft);
}
.sidebar-section:last-child { border-bottom: none; }

.sidebar-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.9px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 5px;
}

.sidebar-mono {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: break-all;
}

.sidebar-addr {
  color: var(--accent);
  font-weight: 600;
}

.sidebar-meta {
  font-size: 10px;
  color: var(--text-faint);
  margin-top: 2px;
}

/* Sheet list */
.sheets-list { display: flex; flex-direction: column; gap: 2px; }

.sheet-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 4px 6px;
  font-family: var(--ui);
  font-size: 11px;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.1s, color 0.1s;
}
.sheet-item:hover { background: var(--bg-input); color: var(--text); }
.sheet-item.active {
  background: var(--accent-bg);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 22%, transparent);
  font-weight: 600;
}

/* Column list */
.columns-list { display: flex; flex-direction: column; gap: 3px; }

.col-item {
  display: flex;
  align-items: center;
  gap: 5px;
  overflow: hidden;
}

.col-letter {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-faint);
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  padding: 1px 3px;
  min-width: 16px;
  text-align: center;
}

.col-name {
  font-size: 11px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================================
   Main panel
   ============================================================ */
.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* Tab row */
.tab-row {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
  flex-shrink: 0;
  overflow: hidden;
}

.tabs { display: flex; flex-shrink: 0; }

.tab {
  padding: 8px 13px;
  font-family: var(--ui);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-faint);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.12s, border-color 0.12s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Inline toolbar (right side of tab row) */
.tab-toolbar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 6px;
  margin-left: auto;
  overflow: hidden;
}

.tab-toolbar button {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--ui);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r);
  padding: 4px 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s, color 0.1s;
  line-height: 1.3;
}
.tab-toolbar button:hover { background: var(--bg-input); color: var(--text); }

#btn-run-all {
  background: var(--accent) !important;
  color: var(--accent-text) !important;
  border-color: transparent !important;
}
#btn-run-all:hover { background: var(--accent-dim) !important; }

.tab-toolbar button.icon {
  padding: 4px 5px;
  min-width: 24px;
  justify-content: center;
  font-size: 12px;
}
.tab-toolbar .toolbar-sep {
  width: 1px;
  height: 14px;
  background: var(--line);
  margin: 0 2px;
  flex-shrink: 0;
}

/* Tab panels */
.tab-panel {
  display: none;
  flex: 1;
  min-height: 0;
  flex-direction: column;
}
.tab-panel.active { display: flex; }

/* Notebook tab — scrolls its content */
#tab-notebook {
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px;
  flex-direction: column;
  gap: 8px;
}

/* Reset cells (parent now handles overflow) */
#tab-notebook #cells {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: visible;
  padding: 0;
  flex: unset;
}

/* ============================================================
   Data tab
   ============================================================ */
.data-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
  flex-shrink: 0;
}

.data-select {
  flex: 1;
  font-family: var(--ui);
  font-size: 12px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: var(--r);
  padding: 4px 6px;
  cursor: pointer;
  min-width: 0;
}
.data-select:focus { outline: none; border-color: var(--accent); }

.data-refresh-btn {
  font-family: var(--ui);
  font-size: 11.5px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-dim);
  border-radius: var(--r);
  padding: 4px 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s;
  flex-shrink: 0;
}
.data-refresh-btn:hover { background: var(--bg-input); color: var(--text); }

.data-table-wrap {
  flex: 1;
  overflow: auto;
}

.data-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-faint);
  padding: 5px 10px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-raised);
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-grid {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 11px;
}
.data-grid th,
.data-grid td {
  border-bottom: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  padding: 3px 8px;
  text-align: left;
  white-space: nowrap;
}
.data-grid th {
  background: var(--bg-raised);
  color: var(--text-dim);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}
.data-grid td { color: var(--text); }
.data-grid tbody tr:hover td { background: var(--accent-bg); }

.data-grid .row-num {
  color: var(--text-faint);
  background: var(--bg-input);
  font-size: 10px;
  text-align: right;
  min-width: 28px;
  border-right: 2px solid var(--line-soft);
  padding: 3px 5px;
}
.data-grid th.row-num {
  z-index: 2;
  background: var(--bg-raised);
}

.data-loading,
.data-empty {
  color: var(--text-faint);
  font-size: 12px;
  padding: 24px 16px;
  text-align: center;
  margin: 0;
}