:root {
  color-scheme: light;
  --bg: #f5f6f7;
  --surface: #ffffff;
  --surface-muted: #eef1f3;
  --surface-hover: #f7fbfb;
  --surface-selected: #eef6f6;
  --surface-control-hover: #e2ecec;
  --surface-secondary-hover: #e4e9ed;
  --surface-preview-heading: #fbfcfd;
  --border: #cfd6dc;
  --border-strong: #7b8790;
  --text: #20272d;
  --muted: #5d6872;
  --accent: #146c6f;
  --accent-strong: #0d5659;
  --action: #315f96;
  --action-strong: #254c79;
  --action-text: #ffffff;
  --focus: #b75e26;
  --focus-border: #74aee8;
  --error: #9d2b2b;
  --input-bg: #ffffff;
  --placeholder: #68737c;
  --diagram-bg: #ffffff;
  --diagram-ink: #1f252a;
  --diagram-halo: #ffffff;
  --template-preview-ink: #1f252a;
  --toggle-track: #cfd6dc;
  --toggle-thumb: #ffffff;
  --shadow: 0 14px 30px rgba(29, 38, 45, 0.08);
  --brand-ink: #1e293b;
  --brand-teal: #0d9488;
  --landing-bg: #f8fafc;
  --landing-line: #dbe3e8;
  --landing-wash: #edf8f6;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111417;
  --surface: #1b2024;
  --surface-muted: #273037;
  --surface-hover: #222b31;
  --surface-selected: #1e3636;
  --surface-control-hover: #303c3c;
  --surface-secondary-hover: #323c43;
  --surface-preview-heading: #171c20;
  --border: #39454d;
  --border-strong: #6f7f89;
  --text: #eef3f7;
  --muted: #b6c2ca;
  --accent: #62b8b4;
  --accent-strong: #82d0cc;
  --action: #416f9f;
  --action-strong: #315f96;
  --action-text: #ffffff;
  --focus: #e0a15b;
  --focus-border: #88bde8;
  --error: #ff9a9a;
  --input-bg: #13181c;
  --placeholder: #9da8b1;
  --diagram-bg: #ffffff;
  --diagram-ink: #1f252a;
  --diagram-halo: #ffffff;
  --template-preview-ink: #e8eef2;
  --toggle-track: #46535c;
  --toggle-thumb: #ffffff;
  --shadow: 0 16px 34px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

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: 1.45;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  border: 0;
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  border: 2px solid var(--text);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  transform: translateY(-180%);
}

.skip-link:focus {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  transform: translateY(0);
}

body.landing-page {
  background:
    radial-gradient(circle at 76% 12%, rgba(13, 148, 136, 0.09), transparent 25rem),
    var(--landing-bg);
  color: var(--brand-ink);
}

.landing-header {
  display: flex;
  width: min(100% - 2rem, 72rem);
  min-height: 5rem;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-wordmark {
  display: inline-flex;
  align-items: flex-start;
  gap: 0.3rem;
  color: var(--brand-ink);
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.brand-wordmark svg {
  width: 0.72rem;
  height: 0.72rem;
  margin-top: 0.05rem;
  color: var(--brand-teal);
}

.brand-wordmark:focus-visible,
.landing-nav a:focus-visible,
.landing-footer a:focus-visible,
.app-home-link:focus-visible,
.access-home-link:focus-visible {
  border-radius: 3px;
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.landing-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 3vw, 1.5rem);
}

.landing-nav a {
  color: #354252;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.landing-nav a:hover {
  text-decoration: underline;
  text-underline-offset: 0.25rem;
}

.landing-nav .landing-nav-action {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.85rem;
  border: 1px solid #aebbc4;
  border-radius: 6px;
  background: #ffffff;
  color: var(--brand-ink);
}

.landing-page main {
  display: grid;
  gap: clamp(3.5rem, 8vw, 7rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
}

.landing-hero,
.landing-section {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
}

.landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(22rem, 1.06fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  min-height: min(43rem, calc(100vh - 5rem));
  padding: clamp(3rem, 8vw, 7rem) 0;
}

.landing-hero-copy {
  display: grid;
  align-content: center;
  gap: 1.25rem;
}

.landing-eyebrow {
  margin: 0;
  color: #445364;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  line-height: 1.3;
  text-transform: uppercase;
}

.landing-hero h1 {
  max-width: 12ch;
  margin: 0;
  color: var(--brand-ink);
  font-size: clamp(2.5rem, 6vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.052em;
  line-height: 0.98;
}

.landing-lede {
  max-width: 38rem;
  margin: 0;
  color: #465567;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.6;
}

.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.landing-actions .button,
.final-callout .button {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 1.15rem;
  text-decoration: none;
}

.landing-actions .button.primary,
.final-callout .button.primary {
  background: #146c6f;
}

.landing-actions .button.primary:hover,
.final-callout .button.primary:hover {
  background: #0d5659;
}

.landing-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.5rem;
  margin: 0.25rem 0 0;
  padding: 0;
  color: #536273;
  font-size: 0.88rem;
  font-weight: 700;
  list-style: none;
}

.landing-proof li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.landing-proof li::before {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--brand-teal);
  content: "";
}

.hero-figure {
  min-width: 0;
  margin: 0;
  padding: clamp(0.75rem, 2.5vw, 1.4rem);
  border: 1px solid var(--landing-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 24px 60px rgba(30, 41, 59, 0.1);
}

.hero-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero-figure-paper {
  fill: #ffffff;
  stroke: #e2e8f0;
  stroke-width: 2;
}

.hero-figure-edge,
.hero-figure-marker {
  fill: none;
  stroke: var(--brand-ink);
  stroke-linejoin: round;
}

.hero-figure-edge {
  stroke-width: 7;
}

.hero-figure-marker {
  stroke: var(--brand-teal);
  stroke-width: 4;
}

.hero-figure-label,
.hero-figure-angle {
  fill: var(--brand-ink);
  stroke: #ffffff;
  stroke-linejoin: round;
  paint-order: stroke;
  font-family: "Times New Roman", Times, serif;
}

.hero-figure-label {
  stroke-width: 9;
  font-size: 30px;
}

.hero-figure-angle {
  stroke-width: 8;
  font-size: 24px;
}

.hero-figure figcaption {
  margin-top: 0.5rem;
  color: #566576;
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
}

.landing-section {
  display: grid;
  gap: 2rem;
}

.landing-section-heading {
  display: grid;
  max-width: 48rem;
  gap: 0.75rem;
}

.landing-section h2 {
  max-width: 22ch;
  margin: 0;
  color: var(--brand-ink);
  font-size: clamp(1.9rem, 4vw, 3.25rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.landing-section-heading > p:last-child,
.accuracy-callout p,
.landing-demo > p {
  margin: 0;
  color: #4f5f70;
  font-size: 1rem;
  line-height: 1.65;
}

.landing-demo {
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.72fr);
  align-items: end;
  padding: clamp(2rem, 5vw, 3.5rem);
  border-left: 5px solid var(--brand-teal);
  border-radius: 0 14px 14px 0;
  background: #ffffff;
  box-shadow: 0 12px 35px rgba(30, 41, 59, 0.06);
}

.landing-demo > div {
  display: grid;
  gap: 0.75rem;
}

.landing-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.landing-card {
  position: relative;
  min-height: 15rem;
  display: grid;
  align-content: end;
  gap: 0.75rem;
  padding: 1.4rem;
  overflow: hidden;
  border: 1px solid var(--landing-line);
  border-radius: 12px;
  background: #ffffff;
}

.landing-card-number {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  color: #c7d4da;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.landing-card h3 {
  max-width: 17ch;
  margin: 0;
  color: var(--brand-ink);
  font-size: 1.15rem;
  line-height: 1.25;
}

.landing-card p {
  margin: 0;
  color: #526172;
  line-height: 1.55;
}

.template-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.template-card {
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--landing-line);
  border-radius: 10px;
  background: #ffffff;
}

.template-card svg {
  width: 100%;
  min-height: 7rem;
  color: var(--brand-ink);
}

.template-illustration-edge,
.template-illustration-marker,
.template-illustration-tick {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.template-illustration-edge {
  stroke-width: 5;
}

.template-illustration-marker,
.template-illustration-tick {
  stroke: var(--brand-teal);
  stroke-width: 3;
}

.template-card figcaption {
  display: grid;
  align-content: start;
  gap: 0.2rem;
  padding-top: 0.75rem;
  border-top: 1px solid #edf1f4;
}

.template-card figcaption strong {
  color: var(--brand-ink);
  font-size: 0.9rem;
}

.template-card figcaption span {
  color: #556475;
  font-size: 0.84rem;
}

.template-card figcaption small {
  margin-top: 0.3rem;
  color: #667586;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.accuracy-callout {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid #b9d9d4;
  border-radius: 14px;
  background: var(--landing-wash);
}

.accuracy-marker {
  width: 2.6rem;
  height: 2.6rem;
  border: solid var(--brand-teal);
  border-width: 0 0 0.45rem 0.45rem;
}

.accuracy-callout > div:last-child {
  display: grid;
  gap: 0.75rem;
}

.accuracy-callout h2 {
  max-width: 30ch;
  font-size: clamp(1.45rem, 3vw, 2.25rem);
}

.final-callout {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  padding: clamp(2rem, 5vw, 3.5rem);
  border-radius: 16px;
  background: var(--brand-ink);
  color: #ffffff;
}

.final-callout > div {
  display: grid;
  gap: 0.75rem;
}

.final-callout .landing-eyebrow {
  color: #b9d9d4;
}

.final-callout h2 {
  color: #ffffff;
}

.landing-footer {
  display: flex;
  width: min(100% - 2rem, 72rem);
  min-height: 6rem;
  margin: 0 auto;
  align-items: center;
  gap: 0.75rem 1.5rem;
  border-top: 1px solid var(--landing-line);
  color: #4f5e6e;
  font-size: 0.86rem;
}

.landing-footer p {
  margin: 0;
}

.landing-footer a {
  margin-left: auto;
  color: #285a78;
  font-weight: 800;
  text-underline-offset: 0.2rem;
}

.access-home-link {
  justify-self: start;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-underline-offset: 0.2rem;
}

.app-home-link {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

body.access-locked {
  display: grid;
  place-items: center;
  padding: 1rem;
}

body.access-locked .app-shell {
  display: none;
}

body:not(.access-locked) .access-gate {
  display: none;
}

.access-gate {
  width: min(100%, 32rem);
}

.access-card {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.25rem, 5vw, 2rem);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.access-prompt {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.25rem, 4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.2;
  text-align: center;
}

.access-blank-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.45rem;
}

.access-blank-input {
  width: 100%;
  min-width: 0;
  min-height: 3rem;
  padding: 0.48rem 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
  font-size: clamp(1.2rem, 2.5vw, 1.45rem);
  font-weight: 700;
  text-align: center;
}

.access-blank-input:focus {
  border-color: var(--focus-border);
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.access-question-mark {
  margin-left: -0.95rem;
  color: var(--text);
  font-size: clamp(1.25rem, 4vw, 1.9rem);
  font-weight: 800;
  line-height: 1;
}

.access-error {
  min-height: 1.25rem;
  margin: 0;
  color: var(--error);
  font-size: 0.9rem;
  font-weight: 700;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.top-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.25rem;
  column-gap: 1rem;
  min-height: 64px;
  padding: 0.9rem clamp(1rem, 3vw, 2rem);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.top-bar-copy {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
}

.top-bar h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0;
}

.app-description {
  max-width: 52rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.35;
}

.theme-toggle {
  display: grid;
  grid-template-columns: minmax(0, auto) 2.9rem;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

.theme-toggle-control {
  position: relative;
  display: block;
  width: 2.9rem;
  height: 1.55rem;
}

.theme-toggle input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.theme-toggle-track {
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--toggle-track);
  transition:
    background-color 120ms ease,
    border-color 120ms ease;
}

.theme-toggle-thumb {
  position: absolute;
  top: 0.18rem;
  left: 0.18rem;
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  background: var(--toggle-thumb);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.28);
  transition: transform 120ms ease;
}

.theme-toggle input:checked + .theme-toggle-track {
  border-color: var(--accent);
  background: var(--accent);
}

.theme-toggle input:checked + .theme-toggle-track .theme-toggle-thumb {
  transform: translateX(1.35rem);
}

.theme-toggle input:focus-visible + .theme-toggle-track {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(18rem, 23rem) minmax(0, 1fr);
  min-height: 0;
}

.controls {
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow: auto;
}

.control-form {
  display: grid;
  gap: 1.25rem;
  padding: 1.25rem;
}

.control-group {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0 0 1.15rem;
  border: 0;
  border-bottom: 1px solid var(--border);
}

.control-group:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.control-group legend {
  margin: 0 0 0.1rem;
  padding: 0;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 700;
}

.control-group legend.visually-hidden {
  margin: -1px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.empty-label-hint {
  margin: -0.35rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.field,
.check-control {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.picker-row {
  --compact-picker-action-width: 3.35rem;
  display: grid;
  grid-template-columns:
    minmax(5rem, 5.2rem)
    var(--compact-picker-action-width)
    minmax(9.95rem, 10.95rem);
  gap: 0.5rem;
  align-items: end;
}

.picker-row .field {
  min-width: 0;
}

.check-control {
  grid-template-columns: 1.5rem minmax(0, 1fr);
  align-items: center;
  color: var(--text);
}

.check-control input {
  width: 1.5rem;
  height: 1.5rem;
  margin: 0;
  accent-color: var(--accent);
}

.field input,
.field select {
  width: 100%;
  min-height: 2.45rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.98rem;
}

.template-picker-field {
  position: relative;
}

.color-picker-field {
  position: relative;
}

.rotation-field {
  min-width: 0;
}

.template-select-state {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  min-height: 0 !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  opacity: 0;
  pointer-events: none;
}

.template-picker {
  position: relative;
  min-width: 0;
}

.template-picker-button {
  width: 100%;
  min-height: 3.15rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: 0.35rem;
  padding: 0.24rem 0.32rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  cursor: pointer;
}

.template-picker-button:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

.template-picker-preview {
  display: grid;
  place-items: center;
  min-width: 0;
}

.template-picker-list {
  position: absolute;
  z-index: 10;
  top: calc(100% + 0.35rem);
  left: 0;
  right: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(5.2rem, 100%), 1fr));
  width: min(20.5rem, calc(100vw - 2rem));
  max-width: calc(100vw - 2rem);
  max-height: min(60vh, 15rem);
  overflow-x: hidden;
  overflow-x: clip;
  overflow-y: auto;
  overscroll-behavior-x: contain;
  align-items: stretch;
  gap: 0.4rem;
  padding: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.template-picker-list[hidden] {
  display: none;
}

.template-picker-option {
  min-height: 2.55rem;
  width: auto;
  min-width: 0;
  display: grid;
  place-items: center;
  align-items: center;
  padding: 0.18rem 0.22rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  overflow: hidden;
}

.template-picker-option:hover,
.template-picker-option.is-selected {
  border-color: var(--accent);
  background: var(--surface-selected);
}

.template-preview-svg {
  width: 4.15rem;
  max-width: 4.15rem;
  height: 2.55rem;
  display: block;
  color: var(--template-preview-ink);
  overflow: hidden;
}


.template-preview-edge,
.template-preview-right-angle,
.template-preview-side-mark {
  vector-effect: non-scaling-stroke;
}

.label-input-wrap {
  --label-insert-columns: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) repeat(var(--label-insert-columns), 2.45rem);
  gap: 0.35rem;
  align-items: stretch;
}

.rotation-input-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--compact-picker-action-width, 3.35rem);
  gap: 0.3rem;
  align-items: stretch;
}

.label-input-wrap.has-fraction-button {
  --label-insert-columns: 2;
}

.label-input-wrap.has-theta-button {
  --label-insert-columns: 3;
}

.label-insert-button {
  min-width: 0;
  min-height: 2.45rem;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--surface-muted);
  color: var(--text);
  font-family: "Times New Roman", Times, serif;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.label-insert-button:hover {
  border-color: var(--accent);
  background: var(--surface-control-hover);
}

.fraction-button-mark {
  display: inline-grid;
  grid-template-rows: auto 0.12em auto;
  gap: 0.02em;
  align-items: center;
  justify-items: center;
  min-width: 1.22em;
  font-size: 0.78em;
  font-style: italic;
  font-weight: 700;
  line-height: 0.86;
  transform: translateY(-0.2em);
}

.fraction-button-bar {
  width: 1.18em;
  height: 0;
  border-top: 0.12em solid currentColor;
}

.rotation-reset-button {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
}

.diagram-color-state {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  opacity: 0;
  pointer-events: none;
}

.diagram-color-state input {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  min-height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}

.color-picker {
  position: relative;
  min-width: 0;
}

.color-picker-button {
  width: 100%;
  min-height: 3.15rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  justify-items: center;
  padding: 0.24rem 0.24rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  cursor: pointer;
}

.color-picker-button:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

.color-picker-list {
  position: absolute;
  z-index: 10;
  top: calc(100% + 0.35rem);
  left: 0;
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  max-height: min(60vh, 15rem);
  overflow-x: hidden;
  overflow-x: clip;
  overflow-y: auto;
  gap: 0.35rem;
  padding: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.color-picker-list[hidden] {
  display: none;
}

.color-picker-option {
  min-height: 2.55rem;
  min-width: 0;
  display: grid;
  place-items: center;
  padding: 0.18rem 0.22rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  cursor: pointer;
}

.color-picker-option:hover,
.color-picker-option.is-selected {
  border-color: var(--accent);
  background: var(--surface-selected);
}

.color-picker-swatch {
  width: 1.22rem;
  height: 1.22rem;
  display: block;
  color: var(--text);
  overflow: visible;
}

.rotation-degree-wrap,
.angle-input-wrap {
  position: relative;
  display: block;
}

.rotation-degree-wrap input,
.angle-input-wrap input {
  padding-right: 1.65rem;
}

.rotation-field .rotation-degree-wrap input {
  min-height: 3.15rem;
  padding-left: 0.45rem;
  padding-right: 1.95rem;
}

.rotation-field .rotation-reset-button {
  min-height: 3.15rem;
}

.degree-suffix {
  position: absolute;
  top: 50%;
  right: 0.65rem;
  color: var(--muted);
  font-size: 0.98rem;
  transform: translateY(-50%);
  pointer-events: none;
}

.rotation-field .degree-suffix {
  right: 1.05rem;
}

.field input::placeholder {
  color: var(--placeholder);
}

.field input:focus,
.field select:focus,
.check-control input:focus-visible,
.button:focus-visible,
.label-insert-button:focus-visible,
.template-picker-button:focus-visible,
.template-picker-option:focus-visible,
.color-picker-button:focus-visible,
.color-picker-option:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.button-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

.button {
  min-height: 2.75rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition:
    background-color 120ms ease,
    border-color 120ms ease,
    color 120ms ease;
}

.button.primary {
  background: var(--action);
  color: var(--action-text);
}

.button.primary:hover {
  background: var(--action-strong);
}

.button.secondary {
  background: var(--surface-muted);
  border-color: var(--border);
  color: var(--text);
}

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

.preview-panel {
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
}

.preview-heading {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem clamp(1rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--border);
  background: var(--surface-preview-heading);
}

.preview-heading h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
}

.preview-download-button {
  min-height: 2.75rem;
  padding: 0.45rem 0.8rem;
  white-space: nowrap;
}

.svg-stage {
  min-height: 0;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 4vw, 2rem);
  overflow: auto;
}

.context-notice {
  margin: -0.25rem 0 0;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: var(--surface-muted);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.4;
}

.output-review-notice {
  margin: 0.75rem clamp(1rem, 3vw, 1.75rem) 0;
}

.application-feedback {
  display: grid;
  gap: 0.35rem;
  padding: 0.65rem clamp(1rem, 3vw, 1.75rem) 0;
}

.application-status,
.application-alert {
  margin: 0;
  padding: 0.55rem 0.7rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
}

.application-status {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.application-alert {
  border: 2px solid var(--error);
  background: var(--surface);
  color: var(--error);
}

.application-alert:empty {
  display: none;
}

.diagram {
  width: min(100%, 58rem);
  height: auto;
  aspect-ratio: 3 / 2;
  display: block;
  background: var(--diagram-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.triangle-edge {
  fill: none;
  stroke: var(--diagram-ink);
  stroke-width: 6;
  stroke-linejoin: round;
}

.right-angle {
  fill: none;
  stroke: var(--diagram-ink);
  stroke-width: 3;
  stroke-linejoin: miter;
}

.side-label,
.angle-label {
  fill: var(--diagram-ink);
  dominant-baseline: middle;
  paint-order: stroke;
  stroke: var(--diagram-halo);
  stroke-width: 8px;
  stroke-linejoin: round;
  font-family: "Times New Roman", Times, serif;
}

.side-label {
  font-size: 30px;
  font-style: normal;
}

.diagram .diagram-label.side-label {
  font-style: normal;
}

.angle-label {
  font-size: 24.0075px;
}

@media (max-width: 860px) {
  .landing-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .landing-hero-copy {
    max-width: 44rem;
  }

  .landing-hero h1 {
    max-width: 14ch;
  }

  .landing-demo {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .landing-feature-grid {
    grid-template-columns: 1fr;
  }

  .landing-card {
    min-height: 11rem;
  }

  .template-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .final-callout {
    grid-template-columns: 1fr;
    justify-items: start;
  }

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

  .controls {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .control-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .button-row {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .landing-header {
    min-height: 4.5rem;
    flex-wrap: wrap;
    padding: 0.75rem 0;
  }

  .landing-nav {
    gap: 0.8rem;
  }

  .landing-nav a:first-child {
    display: none;
  }

  .landing-page main {
    gap: 3.5rem;
  }

  .landing-hero {
    gap: 2.25rem;
    padding: 3rem 0 1rem;
  }

  .landing-hero h1 {
    font-size: clamp(2.45rem, 13vw, 3.75rem);
  }

  .landing-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .landing-actions .button,
  .final-callout .button {
    width: 100%;
  }

  .landing-demo,
  .accuracy-callout,
  .final-callout {
    padding: 1.4rem;
  }

  .accuracy-callout {
    grid-template-columns: 1fr;
  }

  .accuracy-marker {
    width: 2rem;
    height: 2rem;
  }

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

  .template-card {
    grid-template-columns: minmax(7rem, 0.8fr) minmax(0, 1fr);
    grid-template-rows: 1fr;
    align-items: center;
    gap: 0.8rem;
  }

  .template-card svg {
    min-height: 5.5rem;
  }

  .template-card figcaption {
    padding-top: 0;
    padding-left: 0.8rem;
    border-top: 0;
    border-left: 1px solid #edf1f4;
  }

  .landing-footer {
    min-height: 8rem;
    flex-wrap: wrap;
    align-content: center;
  }

  .landing-footer a {
    width: 100%;
    margin-left: 0;
  }

  .top-bar {
    grid-template-columns: 1fr;
  }

  .theme-toggle {
    justify-self: start;
  }

  .access-card {
    padding: 0.75rem;
  }

  .access-prompt {
    font-size: 1rem;
  }

  .access-blank-pair {
    gap: 0.72rem;
  }

  .access-blank-input {
    min-height: 2.45rem;
    padding: 0.4rem 0.45rem;
    font-size: 1rem;
  }

  .access-question-mark {
    margin-left: -0.42rem;
    font-size: 1rem;
  }

  .control-form {
    grid-template-columns: 1fr;
  }

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

  .preview-heading {
    display: grid;
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .preview-download-button {
    width: 100%;
  }

  .svg-stage {
    padding: 0.8rem;
  }

  .diagram {
    min-width: 21rem;
  }
}

@media (max-width: 360px) {
  .landing-nav .landing-nav-action {
    min-height: 2.6rem;
    padding-inline: 0.65rem;
  }

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

  .template-card figcaption {
    padding-top: 0.7rem;
    padding-left: 0;
    border-top: 1px solid #edf1f4;
    border-left: 0;
  }

  .picker-row {
    --compact-picker-action-width: minmax(4.2rem, 4.65rem);
    grid-template-columns: minmax(0, 1fr) var(--compact-picker-action-width);
  }

  .rotation-field {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (forced-colors: active) {
  .access-card,
  .hero-figure,
  .landing-card,
  .template-card,
  .landing-demo,
  .accuracy-callout,
  .final-callout,
  .context-notice,
  .application-status,
  .application-alert,
  .button,
  .field input,
  .template-picker-button,
  .template-picker-option,
  .color-picker-button,
  .color-picker-option,
  .label-insert-button,
  .diagram {
    border-color: CanvasText;
    box-shadow: none;
  }

  .context-notice,
  .landing-nav .landing-nav-action,
  .landing-card,
  .template-card,
  .landing-demo,
  .accuracy-callout,
  .final-callout,
  .application-status,
  .application-alert,
  .button,
  .template-picker-button,
  .template-picker-option,
  .color-picker-button,
  .color-picker-option,
  .label-insert-button {
    background: Canvas;
    color: CanvasText;
  }

  .field input:focus,
  .field select:focus,
  .check-control input:focus-visible,
  .theme-toggle input:focus-visible + .theme-toggle-track,
  .button:focus-visible,
  .label-insert-button:focus-visible,
  .template-picker-button:focus-visible,
  .template-picker-option:focus-visible,
  .color-picker-button:focus-visible,
  .color-picker-option:focus-visible {
    outline-color: Highlight;
  }

  .brand-wordmark,
  .landing-nav a,
  .landing-footer a,
  .landing-eyebrow,
  .landing-section h2,
  .landing-card h3,
  .template-card figcaption strong,
  .template-card figcaption span,
  .template-card figcaption small {
    color: CanvasText;
  }

  .hero-figure-marker,
  .template-illustration-marker,
  .template-illustration-tick,
  .accuracy-marker {
    color: CanvasText;
    border-color: CanvasText;
    stroke: CanvasText;
  }

  .color-picker-swatch {
    forced-color-adjust: none;
  }
}