:root {
  color-scheme: light;
  --primary: #3862f5;
  --primary-hover: #254ce0;
  --on-primary: #fff;
  --text: #17243a;
  --muted: #617394;
  --page: #f6f8fc;
  --surface: #fff;
  --border: #dce4f1;
  --tint: #edf2ff;
  --result: #f0f5ff;
  --teal: #25bbae;
  --danger: #b3253e;
  --scroll-thumb: #a8b6ce;
  --scroll-hover: #7185a5;
  --shadow: 0 8px 32px #243f7510;
  --font-body: "Segoe UI", Arial, sans-serif;
  --font-display: "Segoe UI", Arial, sans-serif;
  --font-mono: "Cascadia Code", Consolas, monospace;
  --radius-card: 18px;
  --radius-control: 11px;
  --page-max: 1200px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --primary: #9cb2ff;
  --primary-hover: #b8c7ff;
  --on-primary: #111c38;
  --text: #e9eef9;
  --muted: #a5b4cf;
  --page: #101725;
  --surface: #182233;
  --border: #33435e;
  --tint: #253452;
  --result: #1c2b46;
  --teal: #50d8c8;
  --danger: #ff9aab;
  --scroll-thumb: #536987;
  --scroll-hover: #8098b9;
  --shadow: 0 8px 32px #00000018;
}
* {
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) var(--page);
}
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-track {
  background: var(--page);
}
*::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border: 2px solid var(--page);
  border-radius: 8px;
}
*::-webkit-scrollbar-thumb:hover {
  background: var(--scroll-hover);
}
*::-webkit-scrollbar-thumb:active {
  background: var(--primary);
}
html {
  scrollbar-gutter: stable;
}
body {
  margin: 0;
  min-width: 280px;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  color: var(--text);
  background: var(--page);
  font: 16px/1.5 var(--font-body);
}
body::before {
  content: "";
  position: absolute;
  inset: 72px 0 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
  mask-image: linear-gradient(
    90deg,
    #000,
    transparent 15%,
    transparent 85%,
    #000
  );
}
body:has(dialog[open]) {
  overflow: hidden;
}
button,
input {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
a,
input {
  touch-action: manipulation;
}
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 4px;
}
h1,
h2,
p {
  margin: 0;
}
h1,
h2 {
  font-family: var(--font-display);
}
h2 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.35;
}
.container {
  width: min(var(--page-max), calc(100% - 64px));
  margin-inline: auto;
}
.icon {
  display: block;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
[data-icon] {
  display: inline-flex;
}
.site-header {
  height: 72px;
  flex-shrink: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px #243f7505;
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  font-size: 31px;
  font-weight: 650;
  letter-spacing: -1.3px;
}
.brand-mark {
  width: 32px;
  height: 36px;
  overflow: visible;
}
.header-nav {
  display: flex;
  gap: 36px;
  margin-left: 45px;
}
.nav-button,
.breadcrumbs button {
  background: none;
  color: inherit;
  border: 0;
  padding: 10px 0;
}
.nav-button:hover,
.breadcrumbs button:hover {
  color: var(--primary);
}
.header-actions {
  display: flex;
  gap: 16px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 10px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  transition:
    background 0.16s,
    border-color 0.16s,
    transform 0.16s;
}
.button:not(:disabled):active {
  transform: translateY(1px);
}
.button--icon {
  width: 44px;
  min-height: 44px;
  padding: 10px;
}
.button:hover:not(:disabled) {
  background: var(--tint);
  border-color: var(--primary);
}
.button--primary {
  width: 100%;
  min-height: 54px;
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
  font-size: 17px;
}
.button--primary:hover:not(:disabled) {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}
.button--secondary {
  color: var(--primary);
  background: var(--tint);
  border-color: color-mix(in srgb, var(--primary) 32%, var(--border));
  min-width: 190px;
}
.main {
  flex: 1;
  padding-top: 20px;
  padding-bottom: 24px;
}
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}
.breadcrumbs > span[aria-hidden] {
  color: var(--scroll-thumb);
}
.page-heading {
  margin: 12px 0 28px;
}
h1 {
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.18;
  letter-spacing: -1.7px;
  font-weight: 750;
}
.page-heading p {
  color: var(--muted);
  font-size: 21px;
  margin-top: 5px;
}
.workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
}
.range-panel {
  padding: 26px 28px;
}
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 20px;
}
.field {
  min-width: 0;
}
.field label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
}
.field input {
  width: 100%;
  min-width: 0;
  height: 50px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-control);
  padding: 10px 15px;
  font-size: 18px;
}
.field input:hover {
  border-color: var(--scroll-thumb);
}
.field input[aria-invalid="true"] {
  border-color: var(--danger);
}
.field-error {
  min-height: 26px;
  font-size: 13px;
  line-height: 18px;
  color: var(--danger);
  padding-block: 4px;
  overflow-wrap: anywhere;
}
.range-help {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}
.range-help .icon {
  width: 20px;
  height: 20px;
}
.result-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  isolation: isolate;
  overflow: hidden;
  padding: 29px 30px 26px;
  background: var(--result);
}
.result-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--primary);
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1.1px;
  font-weight: 600;
}
.status-dot {
  height: 7px;
  width: 7px;
  border-radius: 50%;
  background: var(--scroll-thumb);
}
.has-result .status-dot {
  background: var(--teal);
}
.result-stage {
  width: 100%;
  min-width: 0;
  min-height: 144px;
  display: flex;
  align-items: center;
}
.result-empty {
  font-size: 23px;
  font-weight: 600;
  line-height: 1.5;
}
.result-empty span {
  font-size: 15px;
  font-weight: 400;
  color: var(--muted);
}
.result-number {
  display: none;
  width: 100%;
  font: 700 clamp(64px, 8vw, 124px)/1.1 var(--font-mono);
  letter-spacing: -7px;
  overflow-wrap: anywhere;
  user-select: all;
}
.result-number[data-size="medium"] {
  font-size: clamp(30px, 4.3vw, 62px);
  letter-spacing: -2px;
}
.result-number[data-size="small"] {
  font-size: clamp(23px, 2.5vw, 35px);
  letter-spacing: -1.2px;
}
.has-result .result-empty {
  display: none;
}
.has-result .result-number {
  display: block;
}
.orbits {
  z-index: -1;
  position: absolute;
  width: 240px;
  height: 240px;
  right: 25px;
  top: 22px;
  opacity: 0.6;
}
.orbit {
  position: absolute;
  border: 1px dashed color-mix(in srgb, var(--primary) 24%, transparent);
  border-radius: 50%;
}
.orbit--outer {
  inset: 0;
}
.orbit--middle {
  inset: 42px;
}
.orbit--inner {
  inset: 78px;
}
.orbit-center,
.orbit-dot {
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--primary) 55%, transparent);
}
.orbit-center {
  width: 15px;
  height: 15px;
  top: calc(50% - 7px);
  left: calc(50% - 7px);
}
.orbit-dot--one {
  top: 52px;
  left: 12px;
}
.orbit-dot--two {
  right: 21px;
  bottom: 30px;
}
.orbit-dot--three {
  top: 9px;
  right: 43px;
  width: 6px;
  height: 6px;
}
.history-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 20px;
  padding: 16px 28px;
  min-height: 76px;
}
.history-panel h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  flex-shrink: 0;
}
.history-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
  min-width: 0;
  flex: 1;
}
.history-empty {
  color: var(--muted);
  font-size: 14px;
}
.history-chip {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--tint);
  font: 500 15px/1.6 var(--font-mono);
  max-width: 100%;
  overflow-wrap: anywhere;
}
.clear-button {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 6px 0 6px 8px;
  background: none;
  border: 0;
  color: var(--muted);
  font-size: 13px;
}
.clear-button:hover:not(:disabled) {
  color: var(--primary);
}
.clear-button .icon {
  width: 18px;
  height: 18px;
}
.other-tools {
  margin-top: 22px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}
.other-tools h2 {
  margin-bottom: 12px;
}
.tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.tool-card {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
  padding: 16px 22px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 14px;
  transition:
    border-color 0.16s,
    background 0.16s;
}
.tool-card:hover {
  border-color: var(--primary);
  background: var(--result);
}
.tool-card:active {
  background: var(--tint);
}
.tool-icon {
  width: 54px;
  height: 54px;
  border-radius: 13px;
  background: var(--tint);
  color: var(--primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.tool-icon .icon {
  width: 27px;
  height: 27px;
}
.tool-icon--link {
  background: color-mix(in srgb, var(--teal) 12%, var(--surface));
  color: var(--text);
}
.tool-description {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  overflow-wrap: anywhere;
}
.tool-description strong {
  font-size: 17px;
  font-weight: 600;
}
.tool-description > span {
  color: var(--muted);
  font-size: 14px;
}
.tool-arrow {
  margin-left: auto;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--primary);
  background: var(--tint);
  flex-shrink: 0;
}
.tool-arrow .icon {
  width: 17px;
  height: 17px;
}
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface);
  padding: 14px 0;
  font-size: 11px;
}
.footer-inner {
  display: flex;
  justify-content: center;
  gap: 20px;
}
.footer-inner > span + span {
  border-left: 1px solid var(--border);
  padding-left: 20px;
}
dialog {
  width: min(520px, calc(100% - 32px));
  max-height: calc(100svh - 40px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
}
dialog::backdrop {
  background: #080f2380;
  backdrop-filter: blur(4px);
}
.dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.dialog-description {
  color: var(--muted);
  margin: 8px 0 20px;
}
.catalog-list {
  display: grid;
  gap: 10px;
}
.catalog-list .tool-card {
  padding: 12px;
}
.about-copy {
  display: grid;
  gap: 16px;
  margin-top: 18px;
  color: var(--muted);
}
.toast {
  position: fixed;
  z-index: 10;
  left: 50%;
  bottom: 24px;
  width: max-content;
  max-width: calc(100% - 32px);
  transform: translate(-50%, 12px);
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.16s,
    transform 0.16s;
}
.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 20;
  padding: 12px;
  background: var(--surface);
  color: var(--primary);
}
.skip-link:focus {
  top: 12px;
}
.noscript {
  padding: 20px;
  margin-top: 20px;
}
@media (min-width: 1500px) {
  .main {
    padding-top: 26px;
  }
  .page-heading {
    margin-bottom: 30px;
  }
  .workspace > .panel {
    min-height: 300px;
  }
}
@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .result-panel {
    min-height: 286px;
  }
  .result-number {
    font-size: 110px;
  }
  .result-number[data-size="medium"] {
    font-size: 60px;
  }
  .result-number[data-size="small"] {
    font-size: 36px;
  }
  .page-heading p {
    font-size: 18px;
  }
  .history-panel {
    flex-wrap: wrap;
    gap: 14px;
  }
  .history-list {
    flex-basis: 60%;
  }
}
@media (max-width: 600px) {
  .container {
    width: calc(100% - 32px);
  }
  .header-nav {
    display: none;
  }
  .header-actions {
    gap: 10px;
  }
  .brand {
    font-size: 28px;
  }
  .main {
    padding-top: 14px;
  }
  .breadcrumbs {
    font-size: 12px;
    gap: 10px;
  }
  .page-heading {
    margin-top: 14px;
    margin-bottom: 24px;
  }
  h1 {
    font-size: 31px;
    letter-spacing: -1px;
  }
  .page-heading p {
    font-size: 16px;
    margin-top: 10px;
    max-width: 300px;
  }
  .range-panel {
    padding: 22px 20px;
  }
  .fields {
    gap: 14px;
  }
  .field-error {
    min-height: 34px;
  }
  .result-panel {
    padding: 25px 23px;
    min-height: 292px;
  }
  .result-number[data-size="small"] {
    font-size: clamp(21px, 5.8vw, 34px);
    letter-spacing: -1px;
  }
  .result-number[data-size="medium"] {
    font-size: clamp(30px, 8vw, 48px);
  }
  .orbits {
    right: -30px;
    opacity: 0.4;
  }
  .history-panel {
    padding: 14px 20px;
    gap: 12px;
  }
  .history-panel h2 {
    order: 0;
  }
  .clear-button {
    margin-left: auto;
    order: 1;
  }
  .history-list {
    order: 2;
    flex-basis: 100%;
  }
  .history-chip {
    padding: 6px 12px;
  }
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .tool-card {
    padding: 14px 16px;
    gap: 14px;
  }
  .footer-inner {
    flex-direction: column;
    align-items: center;
    gap: 5px;
    text-align: center;
  }
  .footer-inner > span + span {
    border: 0;
    padding: 0;
  }
  dialog {
    padding: 18px;
  }
}
@media (max-width: 340px) {
  .fields {
    grid-template-columns: 1fr;
  }
  .brand {
    gap: 8px;
    font-size: 25px;
  }
  .header-inner {
    gap: 12px;
  }
  .header-actions {
    gap: 6px;
  }
  .button--icon {
    width: 40px;
  }
  .result-number[data-size="small"] {
    font-size: 19px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
@media (forced-colors: active) {
  * {
    scrollbar-color: auto;
  }
  .button,
  .panel,
  .tool-card,
  input {
    border-color: CanvasText;
  }
  .orbits {
    display: none;
  }
}