:root {
  color-scheme: light;
  font-family: "Segoe UI", Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --slate-900: #1e293b;
  --slate-800: #334155;
  --panel: #d1d5db;
  --workspace: #e5e7eb;
  --grid: #f3f4f6;
  --line: #9ca3af;
  --muted: #6b7280;
  --text: #1f2937;
  --blue: #0284c7;
  --blue-dark: #0369a1;
  --selected: #93c5fd;
  --green: #107c41;
  --green-dark: #0b5c30;
  --danger: #991b1b;
  --warning: #fef08a;
  --invalid: #fdba74;
  --grid-scale: 1;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #cbd5e1;
  color: var(--text);
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

[hidden] { display: none !important; }

.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 30%, #263a55 0%, #111827 64%);
}

.loading-card {
  width: min(430px, calc(100% - 32px));
  padding: 38px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.88);
  color: #f8fafc;
  text-align: center;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
}

.loading-card h1 {
  margin: 18px 0 8px;
  font-size: 1.55rem;
}

.loading-card p {
  margin: 0 0 22px;
  color: #cbd5e1;
}

.loading-bar {
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: #334155;
}

.loading-bar span {
  display: block;
  width: 45%;
  height: 100%;
  border-radius: inherit;
  background: #38bdf8;
  animation: loading 1.15s ease-in-out infinite alternate;
}

@keyframes loading {
  from { transform: translateX(-15%); }
  to { transform: translateX(140%); }
}

.database-logo {
  position: relative;
  width: 58px;
  height: 64px;
  margin: auto;
}

.database-logo i {
  position: absolute;
  left: 8px;
  width: 42px;
  height: 14px;
  border: 1px solid #bae6fd;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: inset 0 -7px 0 #0284c7, 0 7px 0 #0284c7;
}

.database-logo i:nth-child(1) { top: 4px; }
.database-logo i:nth-child(2) { top: 23px; }
.database-logo i:nth-child(3) { top: 42px; }

.database-logo.compact {
  width: 48px;
  height: 58px;
  margin: 0;
  transform: scale(0.82);
  transform-origin: left top;
}

.database-logo.empty-logo { opacity: 0.68; }

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 32px 32px minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-width: 820px;
  background: var(--workspace);
}

.window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 12px;
  background: var(--slate-900);
  color: #f8fafc;
  font-size: 13px;
  user-select: none;
}

.window-title {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.back-link {
  flex: 0 0 auto;
  color: #bae6fd;
  text-decoration: none;
}

.back-link:hover { text-decoration: underline; }

.menu-bar {
  position: relative;
  z-index: 80;
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid #9ca3af;
  background: #f3f4f6;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.menu-root { position: relative; }

.menu-trigger {
  height: 100%;
  min-width: 58px;
  padding: 0 14px;
  border: 0;
  background: transparent;
  color: #111827;
  cursor: pointer;
}

.menu-trigger:hover,
.menu-trigger[aria-expanded="true"] {
  background: #dbeafe;
}

.menu-panel {
  position: absolute;
  top: calc(100% - 1px);
  left: 3px;
  z-index: 100;
  min-width: 230px;
  padding: 5px;
  border: 1px solid #9ca3af;
  border-radius: 3px;
  background: #f9fafb;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.22);
}

.menu-panel button,
.menu-panel a {
  display: block;
  width: 100%;
  padding: 7px 14px;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: #111827;
  text-align: left;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.menu-panel button:hover,
.menu-panel a:hover { background: #dbeafe; }
.menu-panel hr,
.context-menu hr { margin: 4px; border: 0; border-top: 1px solid #d1d5db; }
.menu-panel .danger-text { color: var(--danger); }

.local-data-label {
  margin-left: auto;
  padding: 8px 12px;
  color: #4b5563;
  font-size: 12px;
}

.mobile-tables-button {
  display: none;
  height: 100%;
  padding: 0 14px;
  border: 0;
  background: transparent;
  color: #111827;
  cursor: pointer;
}

.mobile-tables-button:hover,
.mobile-tables-button[aria-expanded="true"] { background: #dbeafe; }

.workspace {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 0;
}

.sidebar {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-height: 0;
  padding: 18px 10px 12px;
  border-right: 2px groove #e5e7eb;
  background: var(--panel);
}

.brand-block {
  width: 54px;
  height: 62px;
  padding: 5px;
  margin-left: 5px;
  overflow: hidden;
  border-radius: 9px;
  background: var(--slate-900);
}

.sidebar h2 {
  margin: 10px 5px 9px;
  font-size: 15px;
}

.table-tree {
  min-height: 0;
  overflow: auto;
  padding: 2px;
  border: 1px inset #f8fafc;
  background: #e5e7eb;
  scrollbar-color: #9ca3af #e5e7eb;
}

.area-group { margin: 0; }

.area-group summary {
  padding: 6px 7px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

.area-tables {
  display: grid;
  padding: 0 0 3px 14px;
}

.table-link {
  padding: 5px 7px;
  overflow: hidden;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: var(--text);
  font-size: 12.5px;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.table-link:hover { background: #dbeafe; }
.table-link.active { background: var(--selected); }
.table-link.empty { color: #9ca3af; }

.active-database {
  display: grid;
  gap: 4px;
  padding: 14px 6px 0;
  color: #4b5563;
  font-size: 12px;
  text-align: center;
}

.active-database b {
  overflow: hidden;
  color: #065f46;
  text-overflow: ellipsis;
}

.active-database small { font-weight: 400; }

.main-panel {
  display: grid;
  grid-template-areas:
    "toolbar"
    "relation"
    "grid"
    "status"
    "footer";
  grid-template-rows: auto auto minmax(0, 1fr) 28px 22px;
  min-width: 0;
  min-height: 0;
  background: var(--workspace);
}

.table-toolbar {
  grid-area: toolbar;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 9px 12px;
}

.table-toolbar h1 {
  min-width: 150px;
  margin: 0 auto 0 0;
  overflow: hidden;
  font-size: 18px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-box {
  display: flex;
  align-items: center;
  width: 190px;
  height: 30px;
  padding: 0 8px;
  border: 1px solid #9ca3af;
  border-radius: 6px;
  background: #f9fafb;
  color: #6b7280;
}

.search-box input {
  width: 100%;
  min-width: 0;
  padding: 4px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.switch-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
}

.switch-control input {
  position: relative;
  width: 32px;
  height: 18px;
  margin: 0;
  appearance: none;
  border: 1px solid #9ca3af;
  border-radius: 999px;
  background: #9ca3af;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.switch-control input::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.3);
  transition: transform 0.15s ease;
}

.switch-control input:checked {
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

.switch-control input:checked::before {
  transform: translateX(14px);
}

.switch-control input:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.round-help {
  width: 25px;
  height: 25px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #6b7280;
  color: white;
  font-weight: 700;
  cursor: pointer;
}

.add-row-button,
.save-button,
.primary-button,
.secondary-button,
.danger-button {
  min-height: 30px;
  padding: 6px 13px;
  border: 0;
  border-radius: 6px;
  color: white;
  cursor: pointer;
}

.add-row-button { background: var(--blue-dark); }
.add-row-button:hover { background: #075985; }
.add-row-button:disabled,
.save-button:disabled { opacity: 0.45; cursor: default; }
.save-button,
.primary-button { background: var(--green); }
.save-button:hover,
.primary-button:hover { background: var(--green-dark); }
.secondary-button { background: #4b5563; }
.secondary-button:hover { background: #374151; }
.danger-button { background: var(--danger); }

.relation-banner {
  grid-area: relation;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 10px 7px;
  padding: 7px 11px;
  border: 1px solid #f59e0b;
  border-radius: 6px;
  background: #fffbeb;
  color: #92400e;
  font-size: 12px;
}

.relation-banner button {
  border: 0;
  background: transparent;
  color: #92400e;
  font-weight: 600;
  cursor: pointer;
}

.grid-wrap {
  grid-area: grid;
  position: relative;
  min-width: 0;
  min-height: 0;
  margin: 0 10px 8px;
  overflow: auto;
  border: 1px inset #f8fafc;
  background: var(--grid);
  scrollbar-color: #9ca3af #e5e7eb;
}

.empty-state {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 100%;
  padding: 30px;
  color: #64748b;
  text-align: center;
}

.empty-state h2 { margin: 16px 0 4px; color: #374151; font-size: 17px; }
.empty-state p { margin: 0; font-size: 13px; }

.data-grid {
  width: max-content;
  min-width: 100%;
  border-spacing: 0;
  border-collapse: separate;
  font-size: calc(12px * var(--grid-scale));
  user-select: none;
}

.data-grid th,
.data-grid td {
  height: calc(27px * var(--grid-scale));
  padding: 0;
  border-right: 1px solid #d1d5db;
  border-bottom: 1px solid #d1d5db;
  background: var(--grid);
}

.data-grid thead th {
  position: sticky;
  top: 0;
  z-index: 20;
  min-width: calc(135px * var(--grid-scale));
  padding: 5px 9px;
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
}

.data-grid .row-index {
  position: sticky;
  left: 0;
  z-index: 15;
  width: 48px;
  min-width: 48px;
  padding: 0 7px;
  background: var(--panel);
  color: #4b5563;
  text-align: right;
  user-select: none;
  cursor: pointer;
}

.data-grid thead .row-index { z-index: 30; text-align: center; }

.data-grid td.required-column,
.data-grid th.required-column { background: #e2e8f0; }

.data-grid tr.new-row td { background: #fef9c3; }
.data-grid td.grid-selected { background: #bfdbfe; }
.data-grid td.grid-active { box-shadow: inset 0 0 0 2px #2563eb; }
.data-grid .grid-heading-selected { background: #93c5fd; color: #1f2937; }
.data-grid tr.invalid-row td { background: var(--invalid); }
.data-grid tr.invalid-row td.grid-selected {
  background: var(--invalid);
  box-shadow: inset 0 0 0 2px #2563eb;
}

.cell-input {
  width: 100%;
  min-width: calc(135px * var(--grid-scale));
  height: 100%;
  padding: 3px 7px;
  border: 1px solid transparent;
  outline: 0;
  background: transparent;
  color: #111827;
  user-select: text;
}

.cell-input:focus {
  border-color: #2563eb;
  background: #eff6ff;
  box-shadow: inset 0 0 0 1px #2563eb;
}

.data-grid tr.invalid-row .cell-input:focus { background: #ffedd5; }

.status-bar {
  grid-area: status;
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 2px 10px;
  overflow: hidden;
  background: var(--panel);
  color: #374151;
  font-size: 11px;
}

#row-status { flex: 0 0 auto; }
#row-status.dirty { color: #b45309; font-weight: 600; }
#column-status {
  min-width: 0;
  margin-left: auto;
  overflow: hidden;
  color: #4b5563;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.zoom-control {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.zoom-control input { width: 120px; accent-color: var(--blue-dark); }
.zoom-control span { width: 62px; text-align: right; }

.main-panel > footer {
  grid-area: footer;
  overflow: hidden;
  padding: 2px 10px;
  color: #9ca3af;
  font-size: 10px;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.context-menu {
  position: fixed;
  z-index: 300;
  min-width: 220px;
  max-height: calc(100vh - 8px);
  overflow-y: auto;
  padding: 5px;
  border: 1px solid #9ca3af;
  border-radius: 4px;
  background: #f9fafb;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.24);
}

.context-menu button {
  display: block;
  width: 100%;
  padding: 7px 12px;
  border: 0;
  background: transparent;
  color: #111827;
  text-align: left;
  cursor: pointer;
}

.context-menu button:hover { background: #dbeafe; }
.context-menu button:disabled { opacity: 0.42; cursor: default; }
.context-menu button:disabled:hover { background: transparent; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.54);
}

.modal {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(620px, 100%);
  max-height: min(760px, calc(100vh - 40px));
  overflow: hidden;
  border: 1px solid #9ca3af;
  border-radius: 10px;
  background: #f3f4f6;
  box-shadow: 0 30px 70px rgba(15, 23, 42, 0.34);
}

.modal.wide { width: min(900px, 100%); }

.modal > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 17px;
  background: var(--slate-900);
  color: #f8fafc;
}

.modal > header h2 { margin: 0; font-size: 17px; }
.modal > header button {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: white;
  font-size: 22px;
  cursor: pointer;
}

.modal-body {
  overflow: auto;
  padding: 18px;
  color: #374151;
  font-size: 14px;
  line-height: 1.5;
}

.modal-body p:first-child { margin-top: 0; }
.modal-body p:last-child { margin-bottom: 0; }
.modal-body code { padding: 2px 4px; border-radius: 3px; background: #e5e7eb; }

.save-error-details ol {
  margin: 14px 0 0;
  padding-left: 42px;
}

.save-error-details li {
  margin: 5px 0;
  padding-left: 4px;
  color: #7c2d12;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  padding: 12px 17px;
  border-top: 1px solid #d1d5db;
  background: #e5e7eb;
}

.export-list {
  display: grid;
  gap: 12px;
}

.export-area {
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #f9fafb;
}

.export-area > strong { display: block; margin-bottom: 7px; }
.export-area label { display: block; margin: 4px 0; }
.export-area input { accent-color: var(--green); }

.choice-list { display: grid; gap: 8px; }
.choice-list button {
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: white;
  color: #1f2937;
  text-align: left;
  cursor: pointer;
}
.choice-list button:hover { border-color: #60a5fa; background: #eff6ff; }

.lcn-groups { display: grid; gap: 14px; }
.lcn-group {
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: white;
}
.lcn-group > strong { display: block; margin-bottom: 8px; }
.lcn-tree,
.lcn-tree ul { margin: 0; padding-left: 20px; list-style: none; }
.lcn-tree { padding-left: 0; }
.lcn-tree button {
  padding: 3px 5px;
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: #1f2937;
  text-align: left;
  cursor: pointer;
}
.lcn-tree button:hover { background: #dbeafe; }

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 700;
  max-width: min(430px, calc(100% - 40px));
  padding: 12px 16px;
  border-radius: 8px;
  background: #1f2937;
  color: white;
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.28);
  font-size: 13px;
}

.toast.error { background: #991b1b; }

@media (max-width: 1050px) {
  .workspace { grid-template-columns: 230px minmax(0, 1fr); }
  .table-toolbar {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) 155px auto auto auto auto auto;
    gap: 7px;
  }
  .search-box { width: 155px; }
  .zoom-control input { width: 80px; }
}

@media (max-width: 900px) {
  .table-toolbar {
    grid-template-columns: minmax(145px, 1fr) auto auto auto auto auto;
    grid-template-areas:
      "title title title title title title"
      "search relaxed help audit add save";
    row-gap: 8px;
  }
  .table-toolbar h1 { grid-area: title; }
  .search-box { grid-area: search; width: 100%; }
  .relaxed-control { grid-area: relaxed; }
  #relaxed-info { grid-area: help; }
  .audit-control { grid-area: audit; }
  #add-row { grid-area: add; }
  #save-changes { grid-area: save; }
}

@media (max-width: 820px) {
  .app-shell { min-width: 0; min-height: 600px; }
  .local-data-label { display: none; }
  .mobile-tables-button { display: block; }
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed;
    top: 64px;
    bottom: 0;
    left: 0;
    z-index: 190;
    width: min(300px, 86vw);
    visibility: hidden;
    box-shadow: 14px 0 35px rgba(15, 23, 42, 0.3);
    transform: translateX(-105%);
    transition: transform 0.18s ease, visibility 0.18s ease;
  }
  .sidebar.mobile-open {
    visibility: visible;
    transform: translateX(0);
  }
  .main-panel { grid-column: 1; }
}

@media (max-width: 600px) {
  .window-header { gap: 10px; }
  .window-title { font-size: 11px; }
  .back-link { font-size: 11px; }
  .table-toolbar {
    grid-template-columns: minmax(0, 1fr) auto auto auto;
    grid-template-areas:
      "title title title title"
      "search search add save"
      "relaxed help audit audit";
  }
  .table-toolbar h1 { min-width: 0; }
  .search-box { min-width: 135px; }
  .add-row-button,
  .save-button { justify-self: end; }
  #column-status { display: none; }
  .status-bar { gap: 8px; }
  .zoom-control { margin-left: auto; }
  .zoom-control input { width: 64px; }
  .zoom-control span { width: 58px; }
  .modal-actions { flex-wrap: wrap; }
  .modal-actions button { flex: 1 1 150px; }
}