.tool-shell {
  margin: 0;
}

.tool-hero {
  margin: 0 auto 1.6em;
  text-align: center;
}

.tool-tagline {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0.2em auto 0.3em;
  max-width: 680px;
}

.tool-privacy {
  color: var(--muted-text);
  font-size: 0.98rem;
  margin: 0 auto;
  max-width: 760px;
}

.tool-callout {
  margin: 2.5em auto 0;
  padding: 2.5em 1em 0;
  text-align: center;
  border-top: 1.5px solid var(--primary-color);
}

.tool-callout h2 {
  font-size: 1.35rem;
}

.tool-callout p {
  max-width: 720px;
  margin: 0.75em auto;
  color: var(--muted-text);
}

.tool-upsell {
  margin: 2.5em auto 0;
  padding: 2.5em 1.5em;
  text-align: center;
  background: var(--primary-color);
  color: #ffffff;
}

.tool-upsell h2 {
  font-size: 1.4rem;
  margin: 0 0 0.6em;
  color: #ffffff;
}

.tool-upsell p {
  max-width: 720px;
  margin: 0 auto 1.4em;
  color: rgba(255, 255, 255, 0.88);
}

.tool-upsell .cta-inverse {
  display: inline-block;
  padding: 0.75em 1.6em;
  border-radius: var(--border-radius);
  background: #ffffff;
  color: var(--primary-color);
  font-weight: 700;
  text-decoration: none;
}

.tool-upsell .cta-inverse:hover,
.tool-upsell .cta-inverse:focus {
  background: var(--section-bg);
}

.tbar,
.csv-topbar,
.csv-actions,
.csv-findbar,
.csv-filterbar,
.csv-logbar,
.csv-exportbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6em;
  padding: 0.6em 1em;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
}

.csv-logbar {
  align-items: flex-start;
  flex-direction: column;
}

.csv-log-actions {
  display: flex;
  gap: 0.5em;
  flex-wrap: wrap;
}

.csv-log-list {
  width: 100%;
  max-height: 180px;
  overflow: auto;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
}

.csv-log-item {
  padding: 0.35em 0.7em;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-color);
}

.csv-log-num {
  color: var(--muted-text);
  font-weight: 700;
  margin-right: 0.3em;
}

.tpanel,
.csv-workspace {
  border: 1px solid var(--border-strong);
  border-top: 3px solid var(--primary-color);
  background: var(--card-bg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.tcard {
  border: 1px solid var(--border-strong);
  background: var(--panel-bg);
  padding: 1.5em;
}

.tbtn,
.csv-bttn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
  padding: 0.55em 1.2em;
  border: 1px solid var(--primary-color);
  background: transparent;
  color: var(--primary-color);
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    box-shadow 0.15s ease,
    transform 0.15s ease;
}

.tbtn:hover:not(:disabled),
.csv-bttn:hover:not(:disabled) {
  background: rgba(0, 0, 0, 0.06);
}

.tbtn:active:not(:disabled),
.csv-bttn:active:not(:disabled) {
  transform: translateY(1px);
}

.tbtn:disabled,
.csv-bttn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.tbtn-primary {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.tbtn-primary:hover:not(:disabled) {
  background: var(--hover-dark);
  border-color: var(--hover-dark);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
  transform: translateY(-1px);
}

.tbtn-sm {
  padding: 0.35em 0.8em;
  font-size: 0.85rem;
}

.tinput,
.csv-findbar input,
.csv-filterbar input,
.csv-neardup input {
  padding: 0.5em 0.6em;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-color);
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
  min-width: 150px;
}

.tsel,
.csv-sel select,
.csv-actions select,
.csv-filterbar select,
.csv-neardup select {
  padding: 0.5em 2.2em 0.5em 0.6em;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-color);
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
  max-width: 260px;
  cursor: pointer;
}

.tinput:focus,
.tsel:focus,
.csv-findbar input:focus,
.csv-filterbar input:focus,
.csv-sel select:focus,
.csv-actions select:focus,
.csv-filterbar select:focus,
.csv-neardup select:focus {
  outline: none;
  border-color: var(--link-color);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.18);
}

.tinput::placeholder,
.csv-findbar input::placeholder,
.csv-filterbar input::placeholder {
  color: var(--muted-text);
  opacity: 0.7;
}

.tlabel,
.csv-sel {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.9rem;
  color: var(--muted-text);
  white-space: nowrap;
}

.tcheck,
.csv-check {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-size: 0.95rem;
  color: var(--text-color);
  cursor: pointer;
  white-space: nowrap;
}

.tchips,
.csv-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45em;
}

.tchip,
.csv-chip {
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  padding: 0.35em 0.9em;
  font-size: 0.88rem;
  line-height: 1.3;
  cursor: pointer;
  border-radius: 999px;
  color: var(--text-color);
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.tchip:hover:not(:disabled),
.csv-chip:hover:not(:disabled) {
  border-color: var(--link-color);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.tchip:disabled,
.csv-chip:disabled {
  cursor: default;
}

.tchip.warn,
.csv-chip.chip-warn {
  border-color: #f0b429;
  color: #7c5208;
  background: #fffaf0;
}

.tchip.info,
.csv-chip.chip-info {
  border-color: #93c5fd;
  color: #1e40af;
  background: #eff6ff;
}

.tchip.danger,
.csv-chip.chip-danger {
  border-color: #f87171;
  color: #9b1c1c;
  background: #fef2f2;
}

.tchip.ok,
.csv-chip.chip-ok {
  border-color: var(--border-strong);
  color: var(--muted-text);
  background: var(--card-bg);
  cursor: default;
}

.tstat,
.csv-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75em;
  flex-wrap: wrap;
  padding: 0.5em 1em;
  font-size: 0.88rem;
  color: var(--muted-text);
  background: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  font-variant-numeric: tabular-nums;
}

.tstat strong,
.csv-status-selection {
  color: var(--text-color);
  font-weight: 600;
}

.tempty,
.csv-empty {
  max-width: 640px;
  margin: 2em auto;
  padding: 3em 2em;
  text-align: center;
  border: 2px dashed var(--border-strong);
  background: var(--panel-bg);
  transition:
    border-color 0.15s ease,
    background-color 0.15s ease;
}

.tempty.dragover,
.csv-empty.dragover {
  border-color: var(--link-color);
  background: var(--surface-hover);
}

.tempty h2,
.csv-empty h2 {
  font-size: 1.5rem;
  margin: 0 0 0.75em;
}

.tempty p,
.csv-empty p {
  color: var(--muted-text);
  margin: 0.5em 0;
}

.tempty-actions,
.csv-empty-actions {
  margin: 1.4em 0;
  display: flex;
  gap: 0.75em;
  justify-content: center;
  flex-wrap: wrap;
}

.tempty-hint,
.csv-empty-hint {
  font-size: 0.9rem;
}

.tbusy,
.busy-bar {
  position: relative;
  max-width: 1200px;
  margin: 0 auto 1em;
  padding: 0.55em 0.95em;
  background: var(--panel-bg);
  border: 1px solid var(--border-strong);
  font-size: 0.9rem;
  color: var(--text-color);
  overflow: hidden;
}

.tbusy-fill,
.busy-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--pct, 0%);
  background: rgba(37, 99, 235, 0.12);
  transition: width 0.2s ease;
  pointer-events: none;
}

.tnote,
.csv-streaming-note {
  margin: 0;
  padding: 0.55em 1em;
  background: #fdf2e8;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: #7c2d12;
}

.tbadge,
.csv-mode-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2em 0.55em;
  background: var(--success);
  color: #ffffff;
}

.tbadge.warn,
.csv-mode-badge.streaming {
  background: #b45309;
}

.tfile-name,
.csv-file-name {
  font-weight: 700;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tdims,
.csv-dims {
  color: var(--muted-text);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}

.tresume {
  margin-top: 1.5em;
  padding: 1.2em;
  background: var(--surface-hover);
  border: 1px solid var(--border-strong);
  font-size: 0.95rem;
  display: flex;
  gap: 0.75em;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.tresume small {
  display: block;
  width: 100%;
  color: var(--muted-text);
  text-align: center;
}

.resume-prompt {
  margin-top: 1.5em;
  padding: 1.2em 1.4em;
  background: var(--surface-hover);
  border: 1px solid var(--border-strong);
  font-size: 0.95rem;
  display: flex;
  gap: 1.25em;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  text-align: center;
}

.resume-info {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
  align-items: center;
  min-width: 0;
  max-width: 100%;
}

.resume-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-text);
}

.resume-prompt small {
  color: var(--muted-text);
  font-size: 0.85rem;
}

.resume-actions {
  display: flex;
  gap: 0.6em;
  align-items: center;
}

.tstat {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  max-width: 100%;
  color: var(--muted-text);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}

.tstat-item {
  min-width: 0;
  padding: 0.15em 0.75em;
  border-right: 1px solid var(--border-strong);
  white-space: nowrap;
}

.tstat-item:first-child {
  padding-left: 0;
}

.tstat-item:last-child {
  border-right: none;
}

:is(.tbtn, .csv-bttn, .tinput, .tsel, .tchip, .csv-chip, .csv-sel select, .csv-findbar input, .csv-filterbar input):focus-visible {
  outline: 2px solid var(--link-color);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .tbtn,
  .csv-bttn,
  .tinput,
  .tsel,
  .tchip,
  .csv-chip,
  .tbusy-fill,
  .busy-fill {
    transition: none;
  }
}

@media (max-width: 760px) {
  .tfile-name,
  .csv-file-name {
    max-width: 150px;
  }

  .tbar,
  .csv-topbar,
  .csv-actions,
  .csv-findbar,
  .csv-filterbar {
    gap: 0.45em;
    padding: 0.5em 0.75em;
  }
}

/* ============ App shell (v3) ============ */
.app-shell {
  position: relative;
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75em;
  padding: 0.55em 1em;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.app-identity {
  display: flex;
  align-items: center;
  gap: 0.6em;
  min-width: 0;
}

.app-actions {
  display: flex;
  align-items: center;
  gap: 0.4em;
  flex-wrap: wrap;
}

.app-rail {
  display: flex;
  align-items: center;
  gap: 0.4em;
  flex-wrap: wrap;
  padding: 0.55em 1em;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
}

.app-rail-button {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.5em 1em;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-color);
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.app-rail-button:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
}

.app-rail-button.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #ffffff;
}

.app-panel {
  display: none;
  padding: 1em;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
}

.app-panel.open {
  display: block;
  animation: appPanelIn 0.16s ease;
}

@keyframes appPanelIn {
  from {
    opacity: 0;
    transform: translateY(-3px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.app-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6em;
}

.app-group + .app-group {
  margin-top: 0.9em;
}

.app-group-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-text);
  width: 100%;
}

.health-strip {
  display: flex;
  align-items: center;
  gap: 0.5em;
  flex-wrap: wrap;
  padding: 0.45em 1em;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.health-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  border: 1px solid transparent;
  padding: 0.18em 0.55em;
  cursor: pointer;
  border-radius: 999px;
  color: var(--muted-text);
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease;
}

.health-stat:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.health-stat strong {
  color: var(--text-color);
  font-variant-numeric: tabular-nums;
}

.health-stat .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.dot-ok {
  background: var(--success);
}

.dot-warn {
  background: #d97706;
}

.dot-info {
  background: var(--link-color);
}

.dot-muted {
  background: var(--border-strong);
}

.health-action {
  margin-left: auto;
}

.progress-wrap {
  position: relative;
  height: 2px;
  background: var(--border-color);
  overflow: hidden;
}

.progress-wrap .progress-fill {
  position: absolute;
  inset: 0;
  width: var(--pct, 0%);
  background: var(--link-color);
  transition: width 0.2s ease;
}

.app-drawer {
  border-top: 1px solid var(--border-color);
  background: var(--panel-bg);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6em;
  padding: 0.5em 1em;
}

.drawer-body {
  padding: 0 1em 1em;
}

.palette {
  position: fixed;
  inset: 0;
  z-index: 10001;
  background: rgba(0, 0, 0, 0.35);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}

.palette.open {
  display: flex;
}

.palette-box {
  width: min(560px, 92vw);
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
}

.palette-input {
  width: 100%;
  border: none;
  padding: 0.9em 1em;
  font-size: 1rem;
  font-family: inherit;
  border-bottom: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
}

.palette-input:focus {
  outline: none;
}

.palette-list {
  max-height: 320px;
  overflow: auto;
  padding: 0.35em;
}

.palette-item {
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.55em 0.8em;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-color);
}

.palette-item:hover,
.palette-item.sel {
  background: var(--surface-hover);
}

.palette-item .kbd {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--muted-text);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0.05em 0.45em;
  background: var(--card-bg);
}

.palette-empty {
  padding: 1.2em;
  color: var(--muted-text);
  text-align: center;
}

.kbd {
  font-size: 0.78rem;
  color: var(--muted-text);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 0.05em 0.45em;
  background: var(--card-bg);
  white-space: nowrap;
}

.col-menu {
  position: absolute;
  z-index: 20;
  min-width: 190px;
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 0.3em;
}

.col-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 0.45em 0.7em;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--text-color);
  font-family: inherit;
}

.col-menu button:hover {
  background: var(--surface-hover);
}

.col-menu hr {
  margin: 0.3em 0;
  border: none;
  border-top: 1px solid var(--border-color);
}

.col-menu .col-menu-head {
  padding: 0.35em 0.7em;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

.health-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}

.health-dot.ok {
  background: var(--success);
}

.health-dot.warn {
  background: #d97706;
}

.health-dot.none {
  background: var(--border-strong);
}

.stat-block {
  display: flex;
  align-items: baseline;
  gap: 0.6em;
  flex-wrap: wrap;
  padding: 0.6em 1em;
  border-bottom: 1px solid var(--border-color);
  background: var(--panel-bg);
}

.stat-block .big {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-color);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.stat-block .lbl {
  color: var(--muted-text);
  font-size: 0.88rem;
}

.dist-bar {
  display: flex;
  gap: 2px;
  height: 14px;
  align-items: flex-end;
  flex: 1;
  min-width: 140px;
}

.dist-seg {
  background: var(--success);
}

.dist-seg.below {
  background: var(--border-strong);
}

.stepper {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid var(--border-color);
  background: var(--panel-bg);
  overflow-x: auto;
  scrollbar-width: none;
}

.stepper::-webkit-scrollbar {
  display: none;
}

.stepper li {
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.6em 1em;
  font-size: 0.9rem;
  color: var(--muted-text);
  white-space: nowrap;
  border-right: 1px solid var(--border-color);
}

.stepper li .num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  flex: none;
}

.stepper li.done .num {
  background: var(--success);
  border-color: var(--success);
  color: #ffffff;
}

.stepper li.active {
  color: var(--text-color);
  font-weight: 700;
}

.stepper li.active .num {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #ffffff;
}

.pair-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5em;
}

.pair-cell {
  padding: 0.55em 0.7em;
  border: 1px solid var(--border-strong);
  background: var(--panel-bg);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

@media (max-width: 800px) {
  .app-rail {
    gap: 0.3em;
    padding: 0.45em 0.7em;
  }

  .app-rail-button {
    padding: 0.45em 0.8em;
    font-size: 0.88rem;
  }

  .palette {
    padding-top: 4vh;
  }

  .pair-grid {
    grid-template-columns: 1fr;
  }
}