* {
  box-sizing:border-box;
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:88px;
}
body {
  margin:0;
  background:var(--tools-canvas);
  color:var(--tools-text);
  font:16px/1.5 var(--iris-font-sans);
}
button,input,select,textarea {
  font:inherit;
}
button,a,input,select,summary {
  touch-action:manipulation;
}
button {
  cursor:pointer;
}
button:disabled,input:disabled,select:disabled {
  cursor:default;
  opacity:.52;
}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible {
  outline:2px solid var(--tools-purple);
  outline-offset:3px;
}
a {
  color:var(--tools-purple-hover);
}
h1,h2,h3,p {
  margin-top:0;
}
h2 {
  font-size:21px;
  line-height:1.3;
  margin-bottom:14px;
}
h3 {
  font-size:16px;
  margin-bottom:12px;
}
p {
  margin-bottom:12px;
}
[hidden] {
  display:none!important;
}
.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}
.skip-link {
  position:fixed;
  top:-100px;
  left:16px;
  z-index:100;
  background:white;
  padding:12px;
  border-radius:6px;
}
.skip-link:focus {
  top:8px;
}
.page-shell {
  max-width:1440px;
  margin:auto;
  padding:24px 32px 64px;
}
.status-strip {
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  color:var(--tools-muted);
  font-size:12px;
}
.local-badge {
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--iris-graphite-600);
}
.local-badge>span {
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--tools-purple);
}
.page-intro {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:35px 0 28px;
}
.eyebrow {
  font-size:10px;
  letter-spacing:.15em;
  color:var(--tools-purple-hover);
  font-weight:700;
  margin-bottom:8px;
}
h1 {
  font-size:clamp(29px,3.5vw,44px);
  line-height:1.15;
  letter-spacing:-.035em;
  margin-bottom:12px;
}
.intro-copy {
  color:var(--tools-muted);
  margin-bottom:0;
  font-size:15px;
}
.reference-stamp {
  display:flex;
  flex-direction:column;
  gap:7px;
  border-left:2px solid var(--tools-purple);
  padding-left:20px;
  min-width:230px;
}
.reference-stamp span {
  font-size:11px;
  color:var(--tools-muted);
}
.reference-stamp span:first-child {
  font-size:9px;
  letter-spacing:.12em;
}
.reference-stamp strong {
  font-size:14px;
}
.tool-nav {
  display:flex;
  gap:28px;
  overflow-x:auto;
  border-bottom:1px solid var(--tools-border);
  margin-bottom:20px;
}
.tool-nav a {
  white-space:nowrap;
  padding:12px 0;
  color:var(--iris-graphite-600);
  font-size:13px;
  text-decoration:none;
  border-bottom:2px solid transparent;
}
.tool-nav a:first-child {
  border-color:var(--tools-purple);
  color:var(--tools-purple-hover);
}
.tool-nav a:hover {
  color:var(--tools-purple);
}
.project-bar {
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin:0 0 20px;
}
.project-bar>div {
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.button,.toolbar button,.action-grid button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid var(--tools-border);
  border-radius:6px;
  padding:9px 13px;
  min-height:39px;
  background:white;
  color:var(--iris-graphite-700);
  font-size:12px;
  font-weight:600;
  text-decoration:none;
  line-height:1.4;
}
.button:hover:not(:disabled),.toolbar button:hover:not(:disabled),.action-grid button:hover:not(:disabled) {
  border-color:var(--tools-purple);
  color:var(--tools-purple-hover);
}
.button-primary {
  background:var(--tools-purple);
  border-color:var(--tools-purple);
  color:white;
}
.button-primary:hover:not(:disabled) {
  background:var(--tools-purple-hover);
  color:white;
}
.file-button {
  position:relative;
  cursor:pointer;
  margin:0!important;
  overflow:hidden;
}
.file-button input {
  position:absolute;
  inset:0;
  width:100%;
  opacity:0;
  cursor:pointer;
}
.file-button:focus-within {
  outline:2px solid var(--tools-purple);
  outline-offset:3px;
}
.file-button:has(input:disabled) {
  opacity:.52;
  cursor:default;
}
.wide {
  width:100%;
  margin-top:10px;
}
.workbench {
  display:grid;
  grid-template-columns:270px minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.settings-panel {
  background:#fff;
  border:1px solid var(--tools-border);
  border-radius:12px;
  padding:20px;
}
.settings-panel>h2 {
  font-size:16px;
  margin-bottom:4px;
}
fieldset {
  border:0;
  margin:0;
  padding:0;
  min-width:0;
}
.control-section {
  border-bottom:1px solid var(--tools-border);
  padding:22px 0 16px;
}
.control-section h3 {
  font-size:11px;
  color:var(--tools-purple-hover);
  display:flex;
  gap:10px;
  text-transform:uppercase;
  letter-spacing:.04em;
}
.control-section h3 span {
  color:var(--iris-graphite-600);
}
label {
  display:block;
  font-size:12px;
  font-weight:500;
  color:var(--iris-graphite-700);
  margin:12px 0 5px;
}
input,select,textarea {
  width:100%;
  min-width:0;
  border:1px solid #cdd2dc;
  border-radius:6px;
  background:#fff;
  color:var(--tools-text);
  padding:8px 9px;
  font-size:13px;
  min-height:36px;
}
input[type=checkbox] {
  width:15px;
  height:15px;
  min-height:15px;
  padding:0;
  accent-color:var(--tools-purple);
  flex-shrink:0;
}
.check-label {
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:12px;
  line-height:1.4;
  margin:14px 0 8px;
}
.check-label input {
  margin:1px 0 0;
}
.input-pair {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
}
.field-help {
  font-size:11px;
  color:var(--tools-muted);
  line-height:1.6;
  margin:9px 0 0;
}
.settings-panel>.field-help {
  margin-top:13px;
}
details {
  margin-top:16px;
}
summary {
  cursor:pointer;
  font-size:12px;
  font-weight:600;
  color:var(--iris-graphite-600);
  padding:4px 0;
}
.workspace {
  min-width:0;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.card {
  border:1px solid var(--tools-border);
  border-radius:12px;
  background:white;
  padding:22px;
  min-width:0;
}
.card-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:15px;
}
.card-heading h2 {
  margin:0;
}
.card-heading .eyebrow {
  font-size:9px;
}
.counter-pill {
  border:1px solid var(--tools-border);
  border-radius:20px;
  padding:5px 10px;
  font-size:10px;
  white-space:nowrap;
  color:var(--tools-muted);
}
.empty-state {
  text-align:center;
  min-height:310px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  color:var(--tools-muted);
  padding:30px 15px;
}
.empty-state h3 {
  color:var(--iris-graphite-700);
  font-size:16px;
  margin-bottom:9px;
}
.empty-state p {
  font-size:12px;
}
.spectrum-illustration {
  font-size:90px;
  color:var(--tools-purple);
  line-height:1;
  opacity:.6;
  margin-bottom:12px;
}
#plot {
  height:390px;
  width:100%;
  margin-top:18px;
}
#plot-summary {
  margin-top:14px;
}
#color-output {
  text-align:center;
  padding:28px 12px;
}
#color-swatch {
  height:180px;
  width:220px;
  border:1px solid var(--tools-border);
  border-radius:10px;
  margin:0 auto 16px;
}
#color-values {
  font-size:13px;
  font-variant-numeric:tabular-nums;
}
.plot-actions {
  display:flex;
  justify-content:flex-end;
  gap:18px;
  flex-wrap:wrap;
  margin-top:14px;
  border-top:1px solid var(--tools-border);
  padding-top:10px;
}
.text-button {
  border:0;
  background:transparent;
  padding:4px 0;
  color:var(--tools-purple-hover);
  font-size:11px;
  font-weight:600;
}
.text-button:hover {
  text-decoration:underline;
}
.notice {
  border:1px solid #dcd3f4;
  background:#f8f5fd;
  padding:12px 15px;
  border-radius:8px;
  font-size:12px;
  color:var(--iris-graphite-700);
  line-height:1.6;
  margin:0;
}
.notice p:last-child,.notice ul:last-child {
  margin-bottom:0;
}
.notice-error {
  border-color:#e8bab4;
  background:#fff4f2;
  color:#923c30;
  margin-bottom:18px;
}
.notice-info {
  border-color:#ded7f0;
  background:#f8f6fd;
}
.notice-warning {
  border-color:#e4d1a9;
  background:#fffbef;
  color:#735415;
}
.metric-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
}
.metric-card {
  border:1px solid var(--tools-border);
  border-radius:10px;
  background:white;
  padding:17px 19px;
  display:flex;
  flex-direction:column;
  gap:5px;
}
.metric-card>span {
  font-size:9px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--tools-muted);
}
.metric-card strong {
  font-size:24px;
  line-height:1.4;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
  color:var(--iris-graphite-700);
  overflow-wrap:anywhere;
}
.metric-card small {
  font-size:10px;
  color:var(--tools-muted);
}
.inline-control {
  display:flex;
  align-items:center;
  gap:8px;
  margin:0;
  white-space:nowrap;
  font-size:11px;
}
.inline-control select {
  font-size:11px;
  min-width:100px;
}
.table-scroll {
  overflow:auto;
  max-height:420px;
  border:1px solid var(--tools-border);
  border-radius:7px;
  margin-top:15px;
}
table {
  border-collapse:collapse;
  width:100%;
  font-size:12px;
}
th {
  font-weight:600;
  font-size:10px;
  white-space:nowrap;
  text-align:left;
  padding:10px 9px;
  background:#f9f9fc;
  color:var(--iris-graphite-600);
  border-bottom:1px solid var(--tools-border);
  position:sticky;
  top:0;
  z-index:1;
}
td {
  padding:5px 7px;
  border-bottom:1px solid #f0f1f5;
  vertical-align:middle;
}
tr:last-child td {
  border-bottom:0;
}
td input,td select {
  font-size:11px;
  min-height:31px;
  padding:5px 6px;
  background:#fff;
  border-color:transparent;
}
td input:hover,td select:hover {
  border-color:#cdd2dc;
}
td input[type=number] {
  min-width:82px;
}
td input[type=text] {
  min-width:105px;
}
td select {
  min-width:89px;
}
td input[type=checkbox] {
  min-height:15px;
}
td:first-child,td:nth-child(2) {
  text-align:center;
}
tbody tr.selected {
  background:#f7f4fd;
}
tbody tr.medium {
  background:#fafafa;
}
tbody tr.medium td {
  color:var(--tools-muted);
}
.toolbar {
  display:flex;
  gap:6px;
  flex-wrap:wrap;
  margin-top:12px;
}
.toolbar button,.action-grid button {
  font-size:10px;
  min-height:31px;
  padding:6px 8px;
}
.file-row {
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  border-top:1px solid var(--tools-border);
  margin-top:18px;
  padding-top:14px;
}
.file-row .button {
  font-size:10px;
  min-height:32px;
  padding:7px 9px;
}
.file-row .field-help {
  flex-basis:100%;
  font-size:10px;
  margin:2px 0 0;
}
.advanced-actions {
  margin-top:16px;
  padding-top:8px;
}
.advanced-actions summary {
  font-size:12px;
}
.action-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:15px;
  align-items:start;
}
.action-grid button {
  margin-top:10px;
}
.input-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:2px 14px;
}
.input-grid label {
  font-size:11px;
}
.span-two {
  grid-column:span 2;
}
#refine-button {
  margin-top:17px;
}
#needle-button {
  margin-top:14px;
}
#optimization-status {
  margin-top:20px;
}
.optimization-metrics {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin:16px 0 0;
}
.optimization-metrics div {
  padding:12px;
  border:1px solid var(--tools-border);
  border-radius:7px;
}
.optimization-metrics dt {
  font-size:10px;
  color:var(--tools-muted);
}
.optimization-metrics dd {
  margin:4px 0 0;
  font-size:15px;
  font-variant-numeric:tabular-nums;
  overflow-wrap:anywhere;
}
#candidate-panel {
  border-top:1px solid var(--tools-border);
  margin-top:18px;
  padding-top:20px;
}
#candidate-panel .button {
  margin-top:12px;
}
#discard-candidate {
  margin-left:12px;
}
.method-guide {
  margin-top:28px;
}
.guide-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:28px;
}
.guide-grid h3 {
  font-size:13px;
  margin-top:13px;
}
.guide-grid p {
  font-size:12px;
  color:var(--tools-muted);
  line-height:1.7;
}
.busy #result-status {
  color:var(--tools-purple-hover);
  border-color:#cec2ec;
}
.busy #runtime-status::before {
  content:' ';
  display:inline-block;
  width:8px;
  height:8px;
  border:2px solid #d9ceee;
  border-top-color:var(--tools-purple);
  border-radius:50%;
  margin-right:7px;
  animation:spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform:rotate(360deg);
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  .busy #runtime-status::before {
    animation:none;
  }
}
@media(min-width:1600px) {
  .page-shell {
    max-width:1540px;
  }
  .workbench {
    grid-template-columns:290px minmax(0,1fr);
  }
}
@media(max-width:1050px) {
  .page-shell {
    padding:20px;
  }
  .workbench {
    grid-template-columns:235px minmax(0,1fr);
    gap:18px;
  }
  .settings-panel {
    padding:16px;
  }
  .card {
    padding:18px;
  }
  .input-grid {
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .guide-grid {
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .card-heading {
    flex-wrap:wrap;
  }
  .metric-card {
    padding:14px;
  }
  .metric-card strong {
    font-size:21px;
  }
}
@media(max-width:760px) {
  .page-shell {
    padding:16px 14px 36px;
  }
  .page-intro {
    padding:26px 0 20px;
  }
  .reference-stamp {
    display:none;
  }
  .intro-copy {
    font-size:13px;
  }
  .tool-nav {
    gap:22px;
  }
  .tool-nav a {
    font-size:12px;
  }
  .workbench {
    grid-template-columns:1fr;
  }
  .settings-panel {
    padding:18px;
  }
  .settings-panel>h2 {
    margin-bottom:8px;
  }
  #settings-form {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
  }
  .control-section {
    border-bottom:0;
    padding:12px 0;
  }
  .workspace {
    gap:14px;
  }
  .card {
    padding:16px;
  }
  .metric-grid {
    gap:8px;
  }
  .metric-card {
    padding:12px;
  }
  .metric-card>span {
    font-size:8px;
  }
  .metric-card strong {
    font-size:19px;
  }
  .metric-card small {
    font-size:9px;
  }
  #plot {
    height:340px;
  }
  .plot-actions {
    justify-content:flex-start;
  }
  .input-grid {
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .optimization-metrics {
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .action-grid {
    grid-template-columns:1fr 1fr;
  }
  .guide-grid {
    gap:18px;
  }
  .project-bar .button {
    font-size:11px;
  }
  .status-strip {
    font-size:10px;
  }
}
@media(max-width:440px) {
  #settings-form {
    grid-template-columns:1fr;
    gap:0;
  }
  .control-section {
    padding:16px 0;
    border-bottom:1px solid var(--tools-border);
  }
  .guide-grid {
    grid-template-columns:1fr;
    gap:6px;
  }
  .metric-card {
    padding:10px 8px;
  }
  .metric-card strong {
    font-size:16px;
  }
  .metric-card>span {
    font-size:7px;
  }
  .metric-card small {
    font-size:8px;
  }
  .card-heading h2 {
    font-size:19px;
  }
  .inline-control {
    flex-wrap:wrap;
  }
  .project-bar>div {
    gap:6px;
  }
  .project-bar {
    gap:8px;
  }
  .action-grid {
    grid-template-columns:1fr;
  }
  .input-grid {
    gap:3px 10px;
  }
}