.tool-shell {
  margin: 0;
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --gutter: 1.25rem;
  --gutter-sm: 1rem;
  --rail-gap: 0.5rem;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.tool-shell [hidden],
.tool-shell [hidden="true"] {
  display: none !important;
}
main:has(.tool-shell) h1,
main:has(.tools-grid) h1 {
  background: none;
  box-shadow: none;
  border-radius: 0;
  padding: 0;
  margin-top: 1.2em;
  margin-bottom: 0.7em;
  letter-spacing: 0.6px;
}
main:has(.tool-shell) .tool-hero h1 {
  margin-top: 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(--section-bg);
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  color: var(--text-color);
}
.tool-upsell h2 {
  font-size: 1.4rem;
  margin: 0 0 0.6em;
  color: var(--heading-color);
}
.tool-upsell p {
  max-width: 720px;
  margin: 0 auto 1.4em;
  color: var(--text-secondary);
}
.tool-upsell .cta-inverse {
  display: inline-block;
  padding: 0.75em 1.6em;
  border-radius: var(--border-radius);
  background: var(--primary-color);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  transition:
    background-color 0.15s ease,
    transform 0.15s ease;
}
.tool-upsell .cta-inverse:hover,
.tool-upsell .cta-inverse:focus {
  background: var(--hover-dark);
}
.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(--card-bg);
  border-bottom: 1px solid #dadce0;
}
.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);
  background: var(--card-bg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  border-radius: 12px;
}
.tcard {
  border: 1px solid var(--border-strong);
  background: var(--panel-bg);
  padding: 1.5em;
  border-radius: 12px;
}
.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: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  min-height: 44px;
  min-width: 44px;
  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) scale(0.98);
}
.tbtn.flash-ok,
.csv-bttn.flash-ok {
  animation: tbtn-flash-ok 0.6s ease;
}
.tbtn.flash-err,
.csv-bttn.flash-err {
  animation: tbtn-flash-err 0.5s ease;
}
@keyframes tbtn-flash-ok {
  0% {
    box-shadow: 0 0 0 0 rgba(47, 93, 63, 0.55);
  }
  100% {
    box-shadow: 0 0 0 12px rgba(47, 93, 63, 0);
  }
}
@keyframes tbtn-flash-err {
  0% {
    box-shadow: 0 0 0 0 rgba(180, 40, 40, 0.55);
    transform: translateX(0);
  }
  25% {
    transform: translateX(-2px);
  }
  50% {
    transform: translateX(2px);
  }
  75% {
    transform: translateX(-1px);
  }
  100% {
    box-shadow: 0 0 0 10px rgba(180, 40, 40, 0);
    transform: translateX(0);
  }
}
.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;
  }
  .tbtn.flash-ok,
  .csv-bttn.flash-ok,
  .tbtn.flash-err,
  .csv-bttn.flash-err {
    animation: none;
  }
}
@media (max-width: 760px) {
  .tfile-name,
  .csv-file-name {
    max-width: none;
    flex: 1 1 100%;
    min-width: 0;
  }
  .app-topbar {
    flex-direction: column;
    align-items: stretch;
  }
  .app-identity {
    flex-wrap: wrap;
    gap: 0.35em 0.6em;
  }
  .tbadge,
  .tdims {
    flex: 0 0 auto;
  }
  .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: var(--rail-gap);
  flex-wrap: wrap;
}
.app-rail {
  display: flex;
  align-items: center;
  gap: var(--rail-gap);
  flex-wrap: wrap;
  padding: 0.55em var(--gutter);
  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: var(--rail-gap);
}
.app-group + .app-group {
  margin-top: var(--sp-4);
}
.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: var(--sp-3) var(--gutter);
  list-style: none;
  border-bottom: 1px solid var(--border-color);
  background: var(--panel-bg);
  overflow-x: auto;
  scrollbar-width: none;
  gap: var(--sp-2);
}
.stepper::-webkit-scrollbar {
  display: none;
}
.stepper li {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.4em 0.9em;
  font-size: 0.9rem;
  color: var(--muted-text);
  white-space: nowrap;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--card-bg);
}
.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.done {
  border-color: var(--success);
  color: var(--success);
}
.stepper li.active {
  color: var(--text-color);
  font-weight: 700;
  border-color: var(--primary-color);
  background: var(--card-bg);
}
.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;
  }
}
.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  z-index: 99990;
}
.sheet-backdrop.open {
  opacity: 1;
  visibility: visible;
}
.sheet {
  position: fixed;
  z-index: 99991;
  background: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-strong);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  padding: 1.25rem;
  max-height: 85vh;
  overflow-y: auto;
  box-sizing: border-box;
}
@media (max-width: 760px) {
  .sheet {
    left: 0;
    right: 0;
    bottom: 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
    transform: translateY(100%);
    transition: transform 0.22s ease;
    padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
  }
  .sheet.open {
    transform: translateY(0);
  }
}
@media (min-width: 761px) {
  .sheet {
    top: 50%;
    left: 50%;
    width: min(480px, calc(100vw - 3rem));
    opacity: 0;
    transform: translate(-50%, -46%) scale(0.97);
    transition:
      opacity 0.2s ease,
      transform 0.2s ease;
  }
  .sheet.open {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}
.sheet.closing {
  pointer-events: none;
}
.sheet h2:first-child,
.sheet h3:first-child {
  margin-top: 0;
}
.sheet-close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  border: none;
  background: transparent;
  color: var(--muted-text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.35rem;
  min-height: auto;
  min-width: auto;
}
.segmented {
  display: inline-flex;
  background: #ece8e2;
  border-radius: 8px;
  padding: 3px;
  border: none;
  gap: 2px;
}
.segmented button {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.4em 1.1em;
  cursor: pointer;
  min-height: 38px;
  border-radius: 6px;
  transition:
    background-color 0.15s ease,
    box-shadow 0.15s ease,
    color 0.15s ease;
}
.segmented button + button {
  border-left: none;
}
.segmented button[aria-pressed="true"] {
  background: #ffffff;
  color: var(--text-color);
  box-shadow: 0 1px 3px rgba(60, 64, 67, 0.25);
}
@media (max-width: 760px) {
  .segmented {
    width: 100%;
  }
  .segmented button {
    flex: 1 1 0;
    min-width: 0;
  }
}
.tbtn-ghost {
  border: none;
  background: transparent;
  color: var(--link-color);
  text-decoration: underline;
  font-weight: 600;
  cursor: pointer;
}
.tbtn-ghost:hover:not(:disabled) {
  color: var(--link-hover);
}
.sel-toolbar {
  position: sticky;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0.4rem 0.6rem;
  background: var(--section-bg);
  border-bottom: 1px solid var(--border-strong);
}
.reveal-hidden {
  display: none !important;
}
.app-panel.sheet {
  display: block;
  margin: 0;
}
.app-panel.sheet[hidden] {
  display: none;
}
.actions-sheet .actions-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.actions-sheet .actions-row {
  justify-content: flex-start;
  width: 100%;
  text-align: left;
}
.ui-dialog {
  width: min(420px, calc(100vw - 3rem));
}
.ui-dialog .tlabel {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.ui-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1.25rem;
}
.csv-empty {
  text-align: center;
  padding: 3rem 1rem;
  border: 2px dashed var(--border-strong);
  background: var(--panel-bg);
}
.csv-empty h2 {
  margin: 0 0 0.6em;
}
.resume-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.9rem;
  border-top: 1px solid var(--border-color);
  margin: 1.75rem auto 0;
  max-width: 640px;
  padding-top: 1.5rem;
}
.resume-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}
.resume-title {
  font-weight: 700;
}
.resume-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}
.app-rail-collapsed .app-rail-button {
  display: none;
}
/* UNIFORM CONTROL HEIGHTS: all interactive controls are 44px tall */
.tool-shell .tbtn,
.tool-shell .csv-bttn,
.tool-shell .tbtn-sm,
.tool-shell .tinput,
.tool-shell .tsel,
.tool-shell select,
.tool-shell .app-rail-button,
.tool-shell .segmented button,
.tool-shell .csv-findbar input,
.tool-shell .csv-filterbar input,
.tool-shell .csv-sel select,
.tool-shell .csv-actions select,
.tool-shell .csv-filterbar select,
.tool-shell .csv-neardup input,
.tool-shell .csv-neardup select {
  height: 44px;
  min-height: 44px;
  box-sizing: border-box;
}
.tool-shell .tcheck {
  min-height: 44px;
}
.tool-shell .app-group input[type="text"],
.tool-shell .app-group input[type="number"] {
  height: 44px;
  min-height: 44px;
  box-sizing: border-box;
}
.tool-shell .tsel {
  padding-top: 0;
  padding-bottom: 0;
}
.app-group .tinput,
.app-group input[type="text"],
.app-group input[type="number"] {
  flex: 1 1 180px;
  width: auto;
  min-width: 150px;
  max-width: 280px;
}
.app-group .tsel {
  flex: 0 1 180px;
  min-width: 140px;
}
.ui-dialog .tinput {
  width: 100%;
}
.health-strip {
  background: var(--panel-bg);
}
.csv-row-glow .csv-cell {
  background: rgba(228, 0, 20, 0.07);
  box-shadow: inset 3px 0 0 rgba(228, 0, 20, 0.55);
}
/* Empty-state vertical rhythm */
.csv-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5em 2em;
}
.csv-empty > * {
  margin: 0;
}
.csv-empty h2 {
  margin-bottom: 0.4em;
}
.csv-empty > p {
  max-width: 48ch;
}
.csv-empty-actions {
  margin: 1.3em 0;
}
.csv-empty-actions .cta-button {
  width: auto;
  min-width: 170px;
}
.csv-empty-help {
  margin-top: 1.1em !important;
}
.resume-prompt {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  gap: 0.7rem;
}
.resume-info {
  gap: 0.1rem;
}
.resume-info small {
  color: var(--muted-text);
}
/* MOBILE APP REBUILD - visible overhaul */
@media (max-width: 760px) {
  .tool-hero {
    padding: 1.2em 1em 1em;
  }
  .tool-hero h1 {
    font-size: 1.6rem;
    line-height: 1.2;
  }
  .tool-shell {
    margin: 0;
    border-left: 1px solid var(--border-strong);
    border-right: 1px solid var(--border-strong);
  }
  .tpanel {
    border-radius: 12px;
    margin: 0.75em;
    box-shadow: 0 2px 12px rgba(60, 64, 67, 0.12);
  }
  .app-topbar {
    padding: var(--sp-4) var(--gutter-sm);
    background: #ffffff;
  }
  .app-rail {
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-4) var(--gutter-sm);
    gap: var(--rail-gap);
    background: #ffffff;
  }
  .app-rail-button {
    width: 100%;
    justify-content: center;
    padding: 0.85em 1em;
    border-radius: 8px;
    background: #f8f9fa;
    border: 1px solid #dadce0;
  }
  .app-rail-button.active {
    background: #000;
    color: #fff;
    border-color: #000;
  }
  .app-panel {
    padding: var(--sp-4) var(--gutter-sm);
  }
  .pl-rail {
    flex-direction: column;
    padding: var(--sp-4) var(--gutter-sm);
    gap: var(--rail-gap);
  }
  .pl-inputs {
    gap: var(--sp-4);
    padding: var(--sp-4);
  }
  .pl-area {
    min-height: 160px;
    border-radius: 8px;
  }
  .fm-inputs {
    gap: 1em;
  }
  .fm-area {
    border-radius: 8px;
  }
  .tool-shell .tbtn,
  .tool-shell .cta-button,
  .tool-shell .csv-bttn {
    width: 100%;
  }
  .tool-shell .tinput,
  .tool-shell .tsel,
  .tool-shell select {
    width: 100%;
    max-width: none;
  }
  .stepper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
  }
  .stepper::-webkit-scrollbar {
    display: none;
  }
  .stepper li {
    flex: 0 0 auto;
    border-radius: 8px;
  }
}
@media (max-width: 560px) {
  main {
    padding: 0.75em;
  }
  h1 {
    font-size: 1.5em;
  }
  .tbtn,
  .csv-bttn {
    width: 100%;
    border-radius: 8px;
  }
  .tbtn-primary {
    border-radius: 8px;
  }
}
/* FREE TOOLS BUTTON CONSISTENCY */
.tool-shell .cta-button,
.tool-shell .tbtn,
.tool-shell .csv-bttn {
  min-height: 44px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.55em 1.2em;
}
.tool-shell .cta-button {
  background: var(--primary-color);
  color: #fff;
  border: 1px solid var(--primary-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
  text-decoration: none;
  margin: 0;
}
.tool-shell .cta-button:hover {
  background: var(--hover-dark);
  border-color: var(--hover-dark);
  color: #fff;
}
.tool-shell .tbtn-primary {
  border-radius: 8px;
}
/* BALANCE CLICKS VS SCROLL - DESKTOP RAIL EXPANDED, MOBILE COLLAPSED */
@media (min-width: 761px) {
  #actions-bttn {
    display: none;
  }
  .app-rail.app-rail-collapsed .app-rail-button {
    display: inline-flex;
  }
  .app-rail {
    justify-content: flex-start;
  }
}
@media (max-width: 760px) {
  .app-rail {
    gap: 0.5em;
  }
  .app-panel {
    max-height: 60vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .csv-grid-wrap {
    max-height: 55vh;
  }
  .resume-actions {
    gap: var(--sp-2);
  }
  .resume-actions .tbtn,
  .resume-actions .cta-button {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 0.75em;
    padding-right: 0.75em;
  }
}