:root {
  --ink: #202025;
  --muted: #73747d;
  --paper: #f8f7f3;
  --panel: rgba(255, 255, 252, 0.82);
  --line: rgba(32, 32, 37, 0.12);
  --accent: #ff5b45;
  --accent-deep: #d9412f;
  --teal: #047a77;
  --sun: #f3c548;
  --mint: #d7f1e2;
  --violet: #6d5be8;
  --shadow: 0 18px 60px rgba(37, 37, 46, 0.1);
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 4% 0%, rgba(255, 204, 138, 0.34), transparent 29rem),
    radial-gradient(circle at 97% 15%, rgba(136, 223, 207, 0.23), transparent 30rem),
    var(--paper);
  font-family: var(--sans);
}

button,
select,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(109, 91, 232, 0.38);
  outline-offset: 2px;
}

.page-grain {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  opacity: 0.38;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='.1'/%3E%3C/svg%3E");
}

.app-shell {
  width: min(1660px, calc(100% - 48px));
  margin: 0 auto;
  padding: 22px 0 28px;
}

.topbar,
.topbar-actions,
.brand,
.button-row,
.canvas-footer,
.legend,
.findings-heading,
.palette-heading {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 18px;
}

.brand {
  gap: 12px;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(3, 7px);
  gap: 3px;
  width: 38px;
  height: 38px;
  padding: 8px;
  border-radius: 12px;
  background: var(--ink);
  transform: rotate(-6deg);
}

.brand-mark span {
  border-radius: 99px;
  background: #fbf7ef;
}

.brand-mark span:nth-child(2) {
  background: var(--sun);
}

.brand-mark span:nth-child(3) {
  background: var(--accent);
}

.brand h1,
.brand p,
.intro-strip p,
.panel-heading h3,
.panel-heading p,
.canvas-header h3,
.canvas-header p,
.report-hero p,
.report-hero span,
.metric span,
.contrast-card p,
.app-footer p {
  margin: 0;
}

.brand h1 {
  font-size: 1.1rem;
  letter-spacing: -0.04em;
}

.eyebrow,
.kicker,
.card-label {
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.115em;
  text-transform: uppercase;
}

.topbar-actions {
  justify-content: flex-end;
  gap: 10px;
}

.local-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  border: 1px solid rgba(4, 122, 119, 0.18);
  border-radius: 99px;
  color: #236864;
  background: rgba(215, 241, 226, 0.62);
  font-size: 0.75rem;
  font-weight: 680;
}

.local-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #258f79;
  box-shadow: 0 0 0 3px rgba(37, 143, 121, 0.13);
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-width: 50px;
  min-height: 37px;
  padding: 7px 9px;
  border: 1px solid rgba(32, 32, 37, 0.15);
  border-radius: 9px;
  color: #55545c;
  background: rgba(255, 254, 250, 0.76);
  font-size: 0.73rem;
  font-weight: 760;
  line-height: 1;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.language-toggle > span:first-child {
  color: var(--violet);
  font-size: 0.86rem;
}

.language-toggle:hover {
  border-color: rgba(109, 91, 232, 0.48);
  background: rgba(235, 232, 255, 0.62);
  transform: translateY(-1px);
}

.button {
  min-height: 37px;
  padding: 9px 13px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 720;
  line-height: 1;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  border-color: var(--accent-deep);
  color: #fffdf9;
  background: var(--accent);
  box-shadow: 0 7px 14px rgba(217, 65, 47, 0.16);
}

.button-primary:hover {
  background: var(--accent-deep);
  box-shadow: 0 9px 18px rgba(217, 65, 47, 0.23);
}

.button-secondary {
  border-color: rgba(32, 32, 37, 0.18);
  background: #fffefa;
}

.button-secondary:hover {
  background: #f0eee6;
}

.button-quiet {
  color: #5d5e65;
  background: transparent;
}

.button-quiet:hover {
  background: rgba(32, 32, 37, 0.06);
}

.intro-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.53fr);
  gap: 36px;
  margin: 34px 0 22px;
  padding: 21px 24px 19px;
  border: 1px solid rgba(32, 32, 37, 0.11);
  border-radius: 18px;
  background:
    linear-gradient(100deg, rgba(255, 255, 252, 0.7), rgba(255, 247, 228, 0.78)),
    rgba(255, 255, 255, 0.6);
  box-shadow: 0 7px 28px rgba(37, 37, 46, 0.045);
}

.intro-strip .kicker {
  color: var(--accent-deep);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.intro-strip h2 {
  max-width: 720px;
  margin: 7px 0 0;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.065em;
}

.intro-strip h2 .intro-highlight {
  position: relative;
  z-index: 0;
}

.intro-strip h2 .intro-highlight::after {
  position: absolute;
  z-index: -1;
  right: -4px;
  bottom: 0;
  left: -4px;
  height: 0.43em;
  content: "";
  background: rgba(243, 197, 72, 0.66);
  transform: rotate(-1.6deg);
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 17px;
}

.intro-actions .button {
  min-height: 41px;
  padding-inline: 16px;
}

.intro-aside {
  align-self: center;
}

.intro-aside > p {
  max-width: 430px;
  margin: 0;
  color: #64636a;
  font-size: 0.83rem;
  line-height: 1.65;
}

.intro-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 13px 0 0;
  padding: 0;
  list-style: none;
}

.intro-proof li {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border-radius: 999px;
  color: #376965;
  background: rgba(215, 241, 226, 0.58);
  font-size: 0.7rem;
  font-weight: 700;
}

.intro-proof li::before {
  content: "✓";
  color: var(--teal);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(224px, 0.74fr) minmax(430px, 1.62fr) minmax(255px, 0.87fr);
  gap: 16px;
  align-items: stretch;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(15px);
}

.control-panel,
.report-panel {
  min-height: 690px;
  padding: 20px;
}

.panel-heading {
  margin-bottom: 14px;
}

.panel-heading h3,
.canvas-header h3 {
  margin-top: 4px;
  font-size: 0.98rem;
  letter-spacing: -0.035em;
}

.panel-heading.compact {
  margin-bottom: 8px;
}

.drop-zone {
  display: flex;
  width: 100%;
  min-height: 128px;
  padding: 16px 14px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1.5px dashed rgba(32, 32, 37, 0.28);
  border-radius: 13px;
  color: var(--ink);
  background: rgba(252, 251, 247, 0.75);
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--violet);
  background: rgba(235, 232, 255, 0.6);
  transform: translateY(-1px);
}

.drop-zone-icon {
  display: grid;
  width: 29px;
  height: 29px;
  margin-bottom: 3px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--violet);
  font-size: 1.25rem;
  line-height: 1;
}

.drop-zone strong {
  font-size: 0.8rem;
}

.drop-zone small,
.helper-copy,
.micro-status,
.contrast-card p,
.findings-list,
.stage-hint {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.5;
}

.field-label {
  display: block;
  margin: 16px 0 6px;
  color: #57575e;
  font-size: 0.72rem;
  font-weight: 720;
}

.select-control {
  width: 100%;
  height: 39px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: #fffefa;
  font-size: 0.78rem;
}

.section-rule {
  height: 1px;
  margin: 20px 0;
  background: var(--line);
}

.helper-copy {
  margin: 0 0 11px;
}

.button-row {
  gap: 7px;
}

.button-row .button {
  flex: 1;
  padding-inline: 8px;
}

.micro-status {
  min-height: 34px;
  margin: 9px 0 0;
}

.sample-controls {
  display: grid;
  gap: 7px;
}

.sample-button {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  min-height: 40px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: #5a5a61;
  background: #fffefa;
  text-align: left;
  font-size: 0.75rem;
  transition: border-color 150ms ease, background 150ms ease;
}

.sample-button.is-active {
  border-color: rgba(109, 91, 232, 0.55);
  color: #332d80;
  background: rgba(235, 232, 255, 0.7);
}

.sample-button b {
  display: inline-block;
  width: 15px;
  color: #262638;
}

.sample-dot {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #d8d8d8;
  box-shadow: 0 0 0 1px rgba(32, 32, 37, 0.18);
}

.text-button {
  margin-top: 8px;
  padding: 2px 0;
  border: 0;
  color: var(--violet);
  background: transparent;
  font-size: 0.72rem;
  font-weight: 730;
  text-decoration: underline;
  text-decoration-color: rgba(109, 91, 232, 0.25);
  text-underline-offset: 3px;
}

.canvas-panel {
  display: flex;
  min-width: 0;
  padding: 20px;
  flex-direction: column;
}

.canvas-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.canvas-meta {
  padding-top: 3px;
  color: var(--muted);
  font-size: 0.7rem;
  white-space: nowrap;
}

.mode-tabs {
  display: flex;
  gap: 5px;
  margin: 18px 0 12px;
  padding-bottom: 2px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.mode-tab {
  flex: 0 0 auto;
  padding: 7px 9px;
  border: 1px solid transparent;
  border-radius: 99px;
  color: #6d6d74;
  background: transparent;
  font-size: 0.72rem;
  font-weight: 680;
}

.mode-tab:hover {
  color: var(--ink);
  background: rgba(32, 32, 37, 0.05);
}

.mode-tab.is-selected {
  border-color: rgba(32, 32, 37, 0.12);
  color: var(--ink);
  background: #fffefa;
  box-shadow: 0 3px 9px rgba(37, 37, 46, 0.05);
}

.canvas-stage {
  display: grid;
  min-height: 468px;
  padding: 20px;
  place-items: center;
  border: 1px solid rgba(32, 32, 37, 0.1);
  border-radius: 14px;
  overflow: auto;
  background:
    linear-gradient(45deg, rgba(32, 32, 37, 0.025) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(32, 32, 37, 0.025) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(32, 32, 37, 0.025) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(32, 32, 37, 0.025) 75%),
    #f2f0e9;
  background-position: 0 0, 0 7px, 7px -7px, -7px 0;
  background-size: 14px 14px;
}

.canvas-scale-wrap {
  position: relative;
  max-width: 100%;
  box-shadow: 0 14px 34px rgba(37, 37, 46, 0.18);
  line-height: 0;
}

#viewCanvas,
#overlayCanvas {
  display: block;
  max-width: 100%;
  border-radius: 3px;
}

#viewCanvas {
  width: 100%;
  height: auto;
}

#overlayCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.canvas-stage[data-marking="true"] #viewCanvas {
  cursor: crosshair;
}

.canvas-stage[data-marking="true"] #overlayCanvas {
  pointer-events: auto;
  cursor: crosshair;
}

.stage-hint {
  position: sticky;
  bottom: 0;
  max-width: 100%;
  margin: 12px auto 0;
  padding: 6px 9px;
  border: 1px solid rgba(32, 32, 37, 0.09);
  border-radius: 7px;
  color: #4e4d54;
  background: rgba(255, 254, 250, 0.82);
  line-height: 1.35;
  text-align: center;
  backdrop-filter: blur(8px);
}

.canvas-footer {
  justify-content: space-between;
  gap: 12px;
  margin-top: 13px;
}

.legend {
  flex-wrap: wrap;
  gap: 11px;
  color: #66666d;
  font-size: 0.68rem;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.legend-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.legend-key {
  border: 2px solid var(--sun);
  background: transparent;
}

.legend-sample-a {
  border-radius: 50%;
  background: var(--violet);
}

.legend-sample-b {
  border-radius: 50%;
  background: var(--teal);
}

.report-panel {
  display: flex;
  flex-direction: column;
}

.report-hero {
  padding: 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, #262531, #3c3a48);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
}

.report-hero p {
  color: #cfcbdc;
  font-size: 0.66rem;
  font-weight: 680;
}

.report-hero strong {
  display: block;
  margin: 5px 0 4px;
  color: #fffdf9;
  font-size: 0.98rem;
  letter-spacing: -0.035em;
}

.report-hero span {
  color: #d9d5df;
  font-size: 0.7rem;
  line-height: 1.42;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin: 12px 0;
}

.metric {
  min-width: 0;
  padding: 9px 7px 8px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 254, 250, 0.68);
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.62rem;
  line-height: 1.2;
}

.metric strong {
  display: block;
  margin-top: 4px;
  color: #303037;
  font-size: 1.12rem;
  letter-spacing: -0.06em;
}

.contrast-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 8px;
  padding: 12px;
  border: 1px solid rgba(109, 91, 232, 0.19);
  border-radius: 11px;
  background: rgba(239, 237, 255, 0.54);
}

.contrast-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.05rem;
  letter-spacing: -0.045em;
}

.contrast-card p {
  grid-column: 1 / -1;
  margin: 0;
}

.contrast-badge {
  align-self: center;
  padding: 5px 7px;
  border-radius: 99px;
  color: #6a6774;
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.65rem;
  font-weight: 760;
}

.contrast-badge.is-pass {
  color: #126a59;
  background: #d8f4e6;
}

.contrast-badge.is-warn {
  color: #9b5d07;
  background: #fff0bd;
}

.contrast-badge.is-fail {
  color: #a33a2f;
  background: #ffded9;
}

.findings-heading,
.palette-heading {
  justify-content: space-between;
  margin-top: 17px;
}

.findings-heading .text-button {
  margin: 0;
}

.findings-list {
  display: grid;
  gap: 8px;
  min-height: 112px;
  margin: 9px 0 0;
  padding: 0;
  list-style: none;
}

.finding {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  padding: 8px;
  border: 1px solid rgba(32, 32, 37, 0.08);
  border-radius: 8px;
  background: rgba(255, 254, 250, 0.56);
}

.finding-icon {
  display: grid;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 5px;
  color: #fff;
  background: var(--violet);
  font-size: 0.62rem;
  font-weight: 800;
}

.finding.is-risk .finding-icon {
  background: var(--accent);
}

.finding.is-good .finding-icon {
  background: var(--teal);
}

.palette-heading {
  margin-bottom: 8px;
}

.palette-heading span {
  color: var(--muted);
  font-size: 0.68rem;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 5px;
}

.palette-swatch {
  aspect-ratio: 1;
  min-width: 0;
  border: 1px solid rgba(32, 32, 37, 0.12);
  border-radius: 6px;
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.5);
}

.report-export {
  width: 100%;
  margin-top: auto;
}

.feedback-link {
  align-self: center;
  margin-top: 10px;
  color: var(--violet);
  font-size: 0.72rem;
  font-weight: 720;
  text-decoration: none;
}

.feedback-link:hover,
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 4px 0;
}

.app-footer p {
  max-width: 760px;
  color: #787780;
  font-size: 0.67rem;
  line-height: 1.45;
}

.footer-links {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 13px;
}

.app-footer .text-button {
  flex: 0 0 auto;
  margin: 0;
}

.text-link {
  color: var(--violet);
  font-size: 0.71rem;
  font-weight: 720;
  text-decoration: none;
}

.about-dialog {
  width: min(510px, calc(100% - 32px));
  padding: 27px;
  border: 1px solid rgba(32, 32, 37, 0.13);
  border-radius: 16px;
  color: var(--ink);
  background: #fffefa;
  box-shadow: 0 24px 90px rgba(37, 37, 46, 0.28);
}

.about-dialog::backdrop {
  background: rgba(29, 28, 37, 0.42);
  backdrop-filter: blur(3px);
}

.about-dialog h2 {
  max-width: 350px;
  margin: 7px 0 16px;
  font-size: 1.35rem;
  letter-spacing: -0.055em;
}

.about-dialog ol {
  margin: 0;
  padding-left: 20px;
  color: #55545c;
  font-size: 0.85rem;
  line-height: 1.75;
}

.dialog-note {
  margin: 16px 0 0;
  color: var(--teal);
  font-size: 0.78rem;
}

.dialog-close {
  position: absolute;
  top: 9px;
  right: 12px;
  width: 31px;
  height: 31px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #5d5d65;
  background: #f1f0eb;
  font-size: 1.35rem;
  line-height: 1;
}

@media (max-width: 1140px) {
  .workspace {
    grid-template-columns: minmax(215px, 0.75fr) minmax(410px, 1.55fr);
  }

  .report-panel {
    grid-column: 1 / -1;
    min-height: auto;
  }

  .report-panel .findings-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-height: auto;
  }

  .report-export {
    margin-top: 16px;
  }
}

@media (max-width: 780px) {
  .app-shell {
    width: min(100% - 24px, 620px);
    padding-top: 14px;
  }

  .topbar,
  .intro-strip,
  .workspace {
    grid-template-columns: 1fr;
  }

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

  .topbar-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .local-badge {
    order: 3;
  }

  .intro-strip {
    gap: 12px;
    margin-top: 19px;
    padding: 18px;
  }

  .intro-aside {
    padding-top: 2px;
  }

  .workspace {
    display: flex;
    flex-direction: column;
  }

  .app-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .control-panel,
  .report-panel {
    min-height: auto;
  }

  .canvas-panel {
    order: -1;
  }

  .canvas-stage {
    min-height: 360px;
    padding: 12px;
  }

  .canvas-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .report-panel .findings-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 450px) {
  .topbar-actions .button {
    flex: 1;
  }

  .local-badge {
    width: 100%;
    justify-content: center;
  }

  .canvas-panel,
  .control-panel,
  .report-panel {
    padding: 15px;
  }

  .mode-tabs {
    margin-inline: -2px;
  }

  .mode-tab {
    padding-inline: 8px;
  }
}