:root {
  color-scheme: light;
  --bg: #e9f0f5;
  --surface: #ffffff;
  --surface-soft: #f4f8fb;
  --surface-muted: #e7eef4;
  --text: #102c43;
  --text-muted: #557084;
  --border: #b6c7d4;
  --border-strong: #8fa7b8;
  --accent: #0b6d9c;
  --accent-strong: #075276;
  --accent-soft: #dceff8;
  --success: #0b7a61;
  --warning: #a56408;
  --danger: #b42828;
  --wet: #137ed2;
  --wet-dark: #075b9d;
  --temp-light: #efcb73;
  --temp-main: #d69b33;
  --temp-dark: #9a6415;
  --shadow: 0 10px 28px rgba(28, 60, 82, .12);
  --radius: 8px;
  --control-height: 34px;
  --space: 10px;
  --font-size: 13px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121d25;
  --surface: #1b2a34;
  --surface-soft: #22343f;
  --surface-muted: #2a3f4d;
  --text: #ebf5fa;
  --text-muted: #abc1ce;
  --border: #435c6c;
  --border-strong: #688294;
  --accent: #4aaee0;
  --accent-strong: #72c4eb;
  --accent-soft: #193e51;
  --success: #5fd2b1;
  --warning: #efba61;
  --danger: #ff8585;
  --shadow: 0 12px 30px rgba(0, 0, 0, .28);
}

:root[data-density="comfortable"] {
  --control-height: 40px;
  --space: 14px;
  --font-size: 14px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  font-size: var(--font-size);
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.35;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
select,
summary,
input {
  outline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 8px 12px;
  border-radius: 4px;
  background: var(--text);
  color: var(--surface);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-header {
  position: relative;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 66px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-strong);
  background: var(--surface);
  box-shadow: 0 2px 10px rgba(31, 59, 78, .08);
}

.brand-block,
.header-actions,
.view-header,
.panel-heading,
.record-card-header,
.temperature-key,
.app-footer {
  display: flex;
  align-items: center;
}

.brand-block {
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 9px;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.brand-block h1,
.brand-block p,
.view-header h2,
.view-header p,
.panel-heading h2,
.panel-heading p {
  margin: 0;
}

.brand-block h1 {
  overflow: hidden;
  font-size: 16px;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-block h1 span {
  color: var(--accent);
  font-size: 12px;
}

.brand-block p {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 11px;
}

.header-actions {
  gap: 8px;
}

.environment-badge,
.unit-badge,
.mini-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .04em;
  line-height: 1;
  text-transform: uppercase;
}

.environment-badge {
  height: 30px;
  padding: 0 10px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 18%, transparent);
}

.header-menu {
  position: relative;
}

.header-menu > summary {
  display: inline-flex;
  height: 32px;
  align-items: center;
  gap: 6px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  user-select: none;
}

.header-menu > summary::-webkit-details-marker {
  display: none;
}

.header-menu[open] > summary,
.header-menu > summary:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.menu-card {
  position: absolute;
  z-index: 50;
  top: calc(100% + 8px);
  right: 0;
  width: min(320px, calc(100vw - 28px));
  padding: 14px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.appearance-card {
  width: 230px;
}

.menu-card fieldset {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  border: 0;
}

.menu-card fieldset:last-child {
  margin-bottom: 0;
}

.menu-card legend,
.menu-card h2 {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 800;
}

.menu-card label {
  display: flex;
  align-items: center;
  gap: 7px;
}

.info-card h2 {
  color: var(--accent);
  font-size: 14px;
}

.info-card p {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.45;
}

.info-card .disclaimer {
  padding: 10px;
  border-left: 3px solid var(--warning);
  background: color-mix(in srgb, var(--warning) 9%, var(--surface));
  color: var(--text);
}

.service-strip {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(280px, 2fr) auto;
  gap: 12px;
  min-height: 32px;
  align-items: center;
  padding: 5px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text-muted);
  font-size: 11px;
}

.service-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 750;
}

.service-state::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.service-state.is-loading {
  color: var(--warning);
}

.service-state.is-ready {
  color: var(--success);
}

.service-state.is-error {
  color: var(--danger);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(310px, 350px) minmax(480px, 1.1fr) minmax(420px, .95fr);
  gap: 8px;
  min-height: calc(100vh - 135px);
  padding: 8px;
}

.control-shell,
.view-card {
  min-width: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 2px 8px rgba(26, 64, 87, .06);
}

.control-shell {
  display: flex;
  min-height: 620px;
  flex-direction: column;
  overflow: hidden;
}

.panel-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-bottom: 1px solid var(--border-strong);
  background: var(--surface-muted);
}

.panel-tab {
  min-width: 0;
  height: 39px;
  padding: 0 4px;
  overflow: hidden;
  border: 0;
  border-right: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
  text-overflow: ellipsis;
}

.panel-tab:last-child {
  border-right: 0;
}

.panel-tab:hover {
  background: color-mix(in srgb, var(--accent) 8%, var(--surface-muted));
}

.panel-tab.is-active {
  background: var(--surface);
  color: var(--accent);
  box-shadow: inset 0 3px 0 var(--accent);
}

.panel-stack {
  flex: 1;
  overflow: auto;
}

.control-panel {
  padding: 14px;
}

.control-panel[hidden] {
  display: none;
}

.panel-heading,
.view-header,
.record-card-header {
  justify-content: space-between;
  gap: 10px;
}

.panel-heading {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.panel-heading h2,
.view-header h2 {
  font-size: 14px;
}

.eyebrow {
  margin: 0 0 2px;
  color: var(--accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.mini-badge,
.unit-badge {
  min-height: 22px;
  padding: 0 8px;
}

.field,
.segmented-field {
  display: grid;
  gap: 5px;
  margin: 0 0 var(--space);
}

.field > span,
.segmented-field legend {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .035em;
  text-transform: uppercase;
}

.field input,
.field select {
  width: 100%;
  height: var(--control-height);
  padding: 0 9px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: var(--surface);
}

.field input:hover,
.field select:hover,
.field input:focus,
.field select:focus {
  border-color: var(--accent);
}

.field input:disabled,
.field select:disabled {
  background: var(--surface-muted);
  color: var(--text-muted);
  cursor: wait;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 8px;
}

.field-grid .field:first-child {
  grid-column: 1 / -1;
}

.panel-message,
.help-text {
  margin: 9px 0;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.45;
}

.panel-message.is-error {
  color: var(--danger);
}

.panel-message.is-success {
  color: var(--success);
}

.record-card,
.verification-basis,
.privacy-note {
  margin-top: 12px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-soft);
}

.record-card-header h3 {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
}

.text-button {
  padding: 3px 5px;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-weight: 750;
}

.text-button:hover {
  text-decoration: underline;
}

.record-grid {
  display: grid;
  gap: 0;
  margin: 9px 0 0;
}

.record-grid:empty {
  display: none;
}

.record-grid > div {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) minmax(100px, 1.1fr);
  border-top: 1px solid var(--border);
}

.record-grid dt,
.record-grid dd {
  margin: 0;
  padding: 6px;
  overflow-wrap: anywhere;
}

.record-grid dt {
  color: var(--text-muted);
}

.record-grid dd {
  border-left: 1px solid var(--border);
  font-weight: 650;
  text-align: right;
}

.primary-button {
  width: 100%;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--accent-strong);
  border-radius: 6px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

.primary-button:hover:not(:disabled) {
  filter: brightness(1.08);
}

.primary-button:disabled {
  cursor: wait;
  opacity: .6;
}

.segmented-field {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface-muted);
}

.segmented-control button {
  height: 30px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  font-weight: 750;
}

.segmented-control button.is-active {
  background: var(--surface);
  color: var(--accent);
  box-shadow: 0 1px 4px rgba(28, 64, 88, .18);
}

.segmented-field p {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 10px;
}

.temperature-key {
  gap: 8px;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 9px;
  font-weight: 750;
  text-transform: uppercase;
}

.temperature-gradient {
  height: 8px;
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: linear-gradient(90deg, #71a9cf, #72a972, #e1bc52, #df773d, #c44343);
}

.verification-basis {
  display: grid;
  gap: 7px;
  margin-bottom: 12px;
}

.verification-basis > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.verification-basis span {
  color: var(--text-muted);
}

.verification-result,
.health-card {
  display: grid;
  gap: 4px;
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 6px;
  background: var(--surface-soft);
}

.verification-result span,
.health-card span {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.45;
}

.verification-result strong {
  font-size: 14px;
  line-height: 1.35;
}

.verification-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 8px 0 0;
}

.verification-metrics > div {
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface);
}

.verification-metrics dt {
  color: var(--text-muted);
  font-size: 11px;
}

.verification-metrics dd {
  margin: 2px 0 0;
  font-size: 12px;
  font-weight: 750;
}

.verification-result.is-neutral,
.health-card.is-loading {
  border-left-color: var(--border-strong);
}

.verification-result.is-pass,
.health-card.is-ready {
  border-left-color: var(--success);
}

.verification-result.is-warning,
.health-card.is-partial {
  border-left-color: var(--warning);
}

.verification-result.is-fail,
.health-card.is-error {
  border-left-color: var(--danger);
}

.capability-list {
  display: grid;
  gap: 6px;
  margin: 12px 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
}

.capability-list .available {
  color: var(--success);
  font-weight: 750;
}

.capability-list .pending {
  color: var(--warning);
  font-weight: 750;
}

.privacy-note strong {
  color: var(--accent);
}

.privacy-note p {
  margin: 5px 0 0;
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.45;
}

.view-card {
  display: flex;
  min-height: 620px;
  flex-direction: column;
  overflow: hidden;
}

.view-header {
  min-height: 52px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-strong);
  background: var(--surface-soft);
}

.drawing-stage,
.model-stage {
  position: relative;
  display: grid;
  min-height: 0;
  flex: 1;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--surface) 72%, transparent), transparent 62%),
    var(--surface-muted);
}

.drawing-stage svg,
.model-stage svg {
  display: block;
  width: 100%;
  max-height: calc(100vh - 230px);
}

.view-legend {
  display: flex;
  min-height: 37px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 7px 10px;
  border-top: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text-muted);
  font-size: 10px;
}

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

.legend-swatch {
  display: inline-block;
  width: 14px;
  height: 8px;
  border: 1px solid rgba(0, 0, 0, .18);
  border-radius: 2px;
}

.legend-swatch.wet {
  background: var(--wet);
}

.legend-swatch.temperature {
  background: var(--temp-main);
}

#drawing-svg {
  color: var(--text);
}

.drawing-grid path {
  fill: none;
  stroke: var(--border);
  stroke-width: .7;
  opacity: .42;
}

.temperature-surface {
  fill: var(--temp-main);
}

.wet-surface {
  fill: var(--wet);
  opacity: .85;
}

.outline {
  fill: none;
  stroke: var(--text);
  stroke-width: 2;
}

.centerline {
  fill: none;
  stroke: var(--accent);
  stroke-dasharray: 14 4 2 4;
  stroke-width: 1;
}

.hatch-line {
  stroke: color-mix(in srgb, var(--temp-dark) 62%, var(--text));
  stroke-width: 1;
}

.dimension-set path {
  fill: none;
  stroke: var(--accent-strong);
  stroke-width: 1.4;
}

.dimension-arrow {
  fill: var(--accent-strong);
}

.dimension-set text,
#drawing-caption {
  fill: var(--text);
  font-size: 13px;
  font-weight: 700;
}

#drawing-caption {
  fill: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
}

.temp-stop-light {
  stop-color: var(--temp-light);
}

.temp-stop-main {
  stop-color: var(--temp-main);
}

.temp-stop-dark {
  stop-color: var(--temp-dark);
}

.ground-shadow {
  fill: rgba(13, 42, 61, .15);
}

.bolt-holes ellipse {
  fill: color-mix(in srgb, var(--temp-dark) 60%, #172c38);
}

.axis path {
  fill: none;
  stroke-width: 3;
}

.axis text {
  fill: var(--text);
  font-size: 11px;
  font-weight: 750;
}

.axis-x {
  stroke: #d44242;
}

.axis-y {
  stroke: #2e9e5b;
}

.axis-z {
  stroke: #316fce;
}

.model-labels {
  position: absolute;
  top: 10px;
  left: 10px;
  display: grid;
  gap: 4px;
  max-width: calc(100% - 20px);
}

.model-labels span {
  width: max-content;
  max-width: 100%;
  padding: 4px 7px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  color: var(--text);
  font-size: 10px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-footer {
  min-height: 29px;
  justify-content: space-between;
  gap: 14px;
  padding: 5px 14px;
  border-top: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 10px;
}

.toast {
  position: fixed;
  z-index: 100;
  right: 16px;
  bottom: 16px;
  max-width: min(380px, calc(100vw - 32px));
  padding: 11px 14px;
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent);
  border-radius: 7px;
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--text);
}

@media (max-width: 1380px) {
  .workspace {
    grid-template-columns: minmax(300px, 340px) minmax(430px, 1fr);
  }

  .model-card {
    grid-column: 2;
  }

  .control-shell {
    grid-row: 1 / span 2;
  }

  .drawing-stage svg,
  .model-stage svg {
    max-height: 560px;
  }
}

@media (max-width: 900px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .environment-badge {
    margin-right: auto;
  }

  .service-strip {
    grid-template-columns: 1fr;
  }

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

  .control-shell,
  .drawing-card,
  .model-card {
    min-height: 540px;
    grid-column: 1;
    grid-row: auto;
  }

  .drawing-stage svg,
  .model-stage svg {
    max-height: 520px;
  }
}

@media (max-width: 540px) {
  .environment-badge {
    width: 100%;
  }

  .header-menu {
    flex: 1;
  }

  .header-menu > summary {
    width: 100%;
    justify-content: center;
  }

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

  .field-grid .field:first-child {
    grid-column: auto;
  }

  .panel-tabs {
    grid-template-columns: repeat(3, 1fr);
  }

  .panel-tab:nth-child(n+4) {
    border-top: 1px solid var(--border);
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}