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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: #f5f5f5;
  font-size: 14px;
  color: #1e1e1e;
}

/* ── Top Bar ────────────────────────────── */
.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: 44px;
  background: #5646F5;
  color: #fff;
  flex-shrink: 0;
  z-index: 20;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.top-bar-back {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 1.1rem;
  line-height: 1;
}
.top-bar-back:hover { color: #fff; }
.top-bar-title {
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
}
.top-bar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.top-btn {
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.top-btn:hover { background: rgba(255,255,255,0.3); }

/* ── Toolbar ───────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  background: #f0f0f0;
  border-bottom: 1px solid #ddd;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.tb-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tb-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  color: #888;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.tb-sep {
  width: 1px;
  height: 22px;
  background: #ccc;
  margin: 0 5px;
  flex-shrink: 0;
}

.toolbar button {
  padding: 4px 10px;
  border: 1px solid #bbb;
  background: #fff;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
}

.toolbar button:hover {
  background: #e5f0fb;
  border-color: #5646F5;
}

.toolbar button.active {
  background: #5646F5;
  color: #fff;
  border-color: #4535e0;
}

.toolbar label {
  font-size: 12px;
  color: #444;
  display: flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
}

.toolbar input[type="number"] {
  width: 50px;
  padding: 3px 5px;
  border: 1px solid #bbb;
  border-radius: 3px;
  font-size: 12px;
}

/* ── Main area ─────────────────────────────── */
.main-area {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ── Table canvas ──────────────────────────── */
.table-canvas {
  flex: 1;
  overflow: auto;
  padding: 16px;
  background: #f9f9f9;
}

#table-wrap {
  display: inline-block;
  min-width: 100%;
}

#tbl-container {
  display: inline-block;
}

/* Generated table cells */
#tbl-container table {
  border-collapse: collapse;
}

#tbl-container td,
#tbl-container th {
  position: relative;
  min-width: 80px;
  min-height: 30px;
  cursor: text;
  outline: none;
  white-space: pre-wrap;
  word-break: break-word;
  vertical-align: top;
}

#tbl-container th {
  font-weight: 600;
  background: #f0f4f8;
}

#tbl-container td.sel,
#tbl-container th.sel {
  outline: 2px solid #5646F5 !important;
  outline-offset: -2px;
  background-color: rgba(86,70,245,0.10) !important;
}

/* ── Settings panel ────────────────────────── */
.settings-panel {
  width: 216px;
  flex-shrink: 0;
  border-left: 1px solid #ddd;
  background: #fff;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-tabs {
  display: flex;
  border-bottom: 1px solid #ddd;
  flex-shrink: 0;
}

.ptab {
  flex: 1;
  padding: 7px;
  border: none;
  background: #f5f5f5;
  cursor: pointer;
  font-size: 13px;
  border-bottom: 2px solid transparent;
}

.ptab.active {
  background: #fff;
  border-bottom-color: #5646F5;
  color: #5646F5;
  font-weight: 600;
}

.tab-pane {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.tab-pane.hidden {
  display: none;
}

/* Setting group */
.sg {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
}

.sg label {
  font-size: 11px;
  color: #555;
  min-width: 60px;
  flex-shrink: 0;
  font-weight: 600;
}

.sg input[type="text"],
.sg input[type="number"],
.sg select {
  flex: 1;
  min-width: 0;
  padding: 3px 5px;
  border: 1px solid #bbb;
  border-radius: 3px;
  font-size: 12px;
}

.sg input[type="color"] {
  width: 30px;
  height: 24px;
  border: 1px solid #bbb;
  border-radius: 3px;
  cursor: pointer;
  padding: 1px;
  flex-shrink: 0;
}

.chk-lbl {
  font-size: 11px;
  color: #555;
  display: flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  min-width: 0;
  flex-shrink: 0;
}

.btn-trio {
  display: flex;
  gap: 2px;
}

.style-btn {
  padding: 3px 7px;
  border: 1px solid #bbb;
  background: #f5f5f5;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
}

.style-btn:hover {
  background: #5646F5;
  color: #fff;
  border-color: #4535e0;
}

.hint-text {
  font-size: 10px;
  color: #888;
  font-style: italic;
}

/* ── Export bar ────────────────────────────── */
.export-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: #f0f0f0;
  border-top: 1px solid #ddd;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.export-bar button {
  padding: 4px 12px;
  border: 1px solid #bbb;
  background: #fff;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
}

.export-bar button:hover {
  background: #5646F5;
  color: #fff;
  border-color: #4535e0;
}

.bar-sep {
  width: 1px;
  height: 20px;
  background: #bbb;
  margin: 0 5px;
}

/* ── Dialogs ───────────────────────────────── */
.dlg-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.32);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.dlg-overlay.visible {
  display: flex;
}

.dlg {
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.28);
  width: 500px;
  max-width: 95vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.dlg-wide {
  width: 740px;
}

.dlg-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #f0f0f0;
  border-bottom: 1px solid #ddd;
  border-radius: 6px 6px 0 0;
  font-weight: 600;
  font-size: 13px;
  flex-shrink: 0;
}

.dlg-x {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: #666;
  padding: 0 4px;
}
.dlg-x:hover { color: #c00; }

.dlg-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
  flex: 1;
}

.dlg-body textarea {
  width: 100%;
  resize: vertical;
  padding: 8px;
  border: 1px solid #bbb;
  border-radius: 4px;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 12px;
  min-height: 140px;
}

.dlg-btns {
  display: flex;
  gap: 8px;
}

.dlg-btns button {
  padding: 5px 14px;
  border: 1px solid #bbb;
  background: #f0f0f0;
  border-radius: 3px;
  cursor: pointer;
  font-size: 13px;
}

.dlg-btns button:hover {
  background: #5646F5;
  color: #fff;
  border-color: #4535e0;
}

.dlg-msg {
  font-size: 12px;
  min-height: 14px;
}
.dlg-msg.err { color: #c00; }
.dlg-msg.ok  { color: #080; }

.preview-code {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 14px;
  border-radius: 4px;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 12px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  flex: 1;
  max-height: 52vh;
}

/* ── Right-click context menu ──────────────── */
.ctx-menu {
  display: none;
  position: fixed;
  z-index: 3000;
  background: #fff;
  border: 1px solid #c8c8c8;
  border-radius: 5px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.22);
  padding: 4px 0;
  min-width: 190px;
  font-size: 13px;
}

.ctx-menu.visible {
  display: block;
}

.ctx-menu button {
  display: block;
  width: 100%;
  padding: 7px 16px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  color: #1e1e1e;
  white-space: nowrap;
}

.ctx-menu button:hover {
  background: #5646F5;
  color: #fff;
}

.ctx-menu button.ctx-danger:hover {
  background: #c00;
}

.ctx-menu hr {
  border: none;
  border-top: 1px solid #eee;
  margin: 3px 0;
}

/* ── Responsive ────────────────────────────── */

/* ── Settings panel (hidden on desktop, slide in on mobile) ── */
.settings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
.settings-overlay.active { display: block; }

@media (max-width: 768px) {
  /* Stack table and settings vertically; settings always visible */
  .main-area { flex-direction: column; }
  .settings-panel {
    position: static;
    width: 100%;
    height: auto;
    max-height: none;
    box-shadow: none;
    border-left: none;
    border-top: 1px solid var(--border);
    /* Remove slide-in transition so it never hides */
    right: unset;
    transition: none;
  }
  /* Overlay no longer needed on mobile */
  .settings-overlay { display: none !important; }
  .toolbar { flex-wrap: wrap; gap: 4px; }
  .toolbar button { padding: 4px 8px; font-size: 11px; }
}

@media (max-width: 480px) {
  .top-bar-title { font-size: 0.85rem; }
  .top-bar { padding: 0 8px; height: 38px; }
  .table-canvas { padding: 8px; }
  .toolbar { padding: 4px 6px; }
  .toolbar button { padding: 3px 6px; font-size: 10px; }
  td[contenteditable] { min-width: 60px; padding: 4px 6px; font-size: 12px; }
}

/* ── Zoom display ──────────────────────────── */
.zoom-display {
  font-size: 11px;
  min-width: 36px;
  text-align: center;
  padding: 0 2px;
}

/* ── Table status bar ──────────────────────── */
.tbl-statusbar {
  display: flex;
  align-items: center;
  gap: 0;
  background: #5646F5;
  color: #fff;
  font-size: 12px;
  flex-shrink: 0;
  border-top: 1px solid #4535e0;
  padding: 0;
}
.tbl-statusbar span {
  padding: 3px 12px;
  border-right: 1px solid rgba(255,255,255,0.25);
  white-space: nowrap;
  opacity: 0.92;
}
.tbl-statusbar span:empty { display: none; }

/* Hint text in status bar */
#sb-hint {
  opacity: 0.65;
  font-size: 11px;
}

/* Zoom group in status bar */
.tbl-statusbar .sb-zoom-group {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 6px;
  margin-left: auto;
  border-right: none !important;
  border-left: 1px solid rgba(255,255,255,0.25);
}

.tbl-statusbar .sb-btn {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 11px;
  padding: 1px 4px;
  border-radius: 3px;
  line-height: 1;
}
.tbl-statusbar .sb-btn:hover { background: rgba(255,255,255,0.2); }

#sb-tbl-zoom { min-width: 34px; text-align: center; padding: 0; border: none !important; }

/* ── Dark mode overrides ───────────────────── */
:root {
  --tg-bg: #f5f5f5;
  --tg-bg2: #f0f0f0;
  --tg-bg3: #ffffff;
  --tg-border: #dddddd;
  --tg-text: #1e1e1e;
  --tg-text2: #888888;
  --tg-accent: #5646F5;
  --tg-canvas: #ffffff;
  --tg-cell-bg: #ffffff;
  --tg-header-bg: #5646F5;
}

[data-theme="dark"] {
  --tg-bg: #1e1e1e;
  --tg-bg2: #252526;
  --tg-bg3: #2d2d30;
  --tg-border: #3e3e42;
  --tg-text: #cccccc;
  --tg-text2: #888888;
  --tg-accent: #8b83f7;
  --tg-canvas: #2d2d30;
  --tg-cell-bg: #1e1e1e;
  --tg-header-bg: #3c2fd4;
}

[data-theme="dark"] body {
  background: var(--tg-bg);
  color: var(--tg-text);
}
[data-theme="dark"] .app-header {
  background: var(--tg-header-bg);
}
[data-theme="dark"] .toolbar {
  background: var(--tg-bg2);
  border-bottom-color: var(--tg-border);
}
[data-theme="dark"] .tb-label { color: var(--tg-text2); }
[data-theme="dark"] .tb-sep   { background: var(--tg-border); }
[data-theme="dark"] .toolbar button {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .toolbar button:hover {
  background: #2d1fa8;
  border-color: var(--tg-accent);
  color: var(--tg-text);
}
[data-theme="dark"] .toolbar input[type="number"] {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .table-canvas {
  background: var(--tg-canvas);
}
[data-theme="dark"] #table-wrap {
  background: var(--tg-canvas);
}
[data-theme="dark"] .settings-panel {
  background: var(--tg-bg2);
  border-left-color: var(--tg-border);
}
[data-theme="dark"] .panel-tabs {
  background: var(--tg-bg3);
  border-bottom-color: var(--tg-border);
}
[data-theme="dark"] .ptab {
  background: var(--tg-bg3);
  color: var(--tg-text2);
}
[data-theme="dark"] .ptab.active {
  background: var(--tg-bg2);
  color: var(--tg-accent);
  border-bottom-color: var(--tg-accent);
}
[data-theme="dark"] .tab-pane label { color: var(--tg-text); }
[data-theme="dark"] .sg { border-bottom-color: var(--tg-border); }
[data-theme="dark"] .sg input[type="text"],
[data-theme="dark"] .sg input[type="number"],
[data-theme="dark"] .sg select {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .style-btn {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .hint-text { color: var(--tg-text2); }
[data-theme="dark"] .export-bar {
  background: var(--tg-bg2);
  border-top-color: var(--tg-border);
}
[data-theme="dark"] .export-bar button {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .export-bar button:hover {
  background: #2d1fa8;
  border-color: var(--tg-accent);
}
[data-theme="dark"] .bar-sep { background: var(--tg-border); }
[data-theme="dark"] .dlg {
  background: var(--tg-bg2);
  border-color: var(--tg-border);
}
[data-theme="dark"] .dlg-hdr {
  background: var(--tg-bg3);
  border-bottom-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .dlg-x { color: var(--tg-text2); }
[data-theme="dark"] .dlg-body { color: var(--tg-text); }
[data-theme="dark"] .dlg-body textarea,
[data-theme="dark"] .dlg-body input {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .dlg-btns button {
  background: var(--tg-bg3);
  border-color: var(--tg-border);
  color: var(--tg-text);
}
[data-theme="dark"] .dlg-btns button:hover {
  background: var(--tg-accent);
  border-color: var(--tg-accent);
  color: #fff;
}
[data-theme="dark"] .preview-code {
  background: var(--tg-bg3);
  color: var(--tg-text);
  border-color: var(--tg-border);
}
[data-theme="dark"] .ctx-menu {
  background: var(--tg-bg2);
  border-color: var(--tg-border);
  box-shadow: 0 6px 20px rgba(0,0,0,0.55);
}
[data-theme="dark"] .ctx-menu button { color: var(--tg-text); }
[data-theme="dark"] .ctx-menu button:hover {
  background: var(--tg-accent);
  color: #fff;
}
[data-theme="dark"] .ctx-menu hr { border-top-color: var(--tg-border); }
[data-theme="dark"] .tbl-statusbar {
  background: var(--tg-header-bg);
  border-top-color: #3221c0;
}