:root {
  --paper: #f1f3f8;
  --ink: #151a3b;
  --ink-soft: #4d5478;
  --accent: #2b3bd1;
  --rule: #c9cee3;
  --free: #1d7a4c;
  --taken: #c23b22;
  --band-high-risk: #c23b22;
  --band-crowded: #b7791f;
  --band-mostly-clear: #2b3bd1;
  --band-highly-unique: #1d7a4c;
  --focus: #2b3bd1;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1430;
    --ink: #e6e9f7;
    --ink-soft: #a6acd0;
    --accent: #9aa5ff;
    --rule: #2c3462;
    --free: #5fd39a;
    --taken: #ff8a70;
    --band-high-risk: #ff8a70;
    --band-crowded: #f0b85a;
    --band-mostly-clear: #9aa5ff;
    --band-highly-unique: #5fd39a;
    --focus: #9aa5ff;
    color-scheme: dark;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0 auto;
  max-width: 46rem;
  padding: 1.5rem 1rem 3rem;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Bricolage Grotesque', system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.5;
  font-optical-sizing: auto;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

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

/* Header and footer */

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 3.5rem;
}

.wordmark {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

footer {
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

footer p {
  margin: 0 0 0.5rem;
  max-width: 38rem;
}

/* The form: the visitor's name is the headline of the page. */

h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
}

.lede {
  margin: 0.5rem 0 2rem;
  max-width: 38rem;
  color: var(--ink-soft);
}

.name-input {
  display: block;
  width: 100%;
  padding: 0 0 0.15em;
  border: 0;
  border-bottom: 4px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: clamp(2.75rem, 11vw, 5.5rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

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

.name-input:focus-visible {
  outline: none;
  border-bottom-color: var(--accent);
}

.name-input[aria-invalid='true'] {
  border-bottom-color: var(--taken);
}

.note {
  margin: 0.75rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.field-error {
  min-height: 1.5em;
  margin: 0.25rem 0 0;
  color: var(--taken);
  font-weight: 600;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1rem;
}

.controls label {
  font-weight: 600;
}

select,
button {
  font: inherit;
  font-size: 1rem;
}

select {
  min-height: 2.75rem;
  padding: 0 0.75rem;
  border: 1.5px solid var(--ink-soft);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
}

button {
  min-height: 2.75rem;
  margin-left: auto;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--paper);
  font-weight: 700;
  cursor: pointer;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Result */

#result {
  margin-top: 3rem;
}

#result:empty {
  display: none;
}

.status {
  color: var(--ink-soft);
}

.request-error {
  padding-left: 1rem;
  border-left: 4px solid var(--taken);
}

.verdict {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1rem;
}

.score {
  font-size: clamp(3.5rem, 14vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--band);
}

.score-out-of {
  color: var(--ink-soft);
  font-size: 1.125rem;
}

.band-label {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--band);
}

.verdict-name {
  flex-basis: 100%;
  margin: 0;
  color: var(--ink-soft);
}

/* Four bands at the real thresholds (0-40-65-85-100), with a marker at the score. */
.scale {
  position: relative;
  display: grid;
  grid-template-columns: 40fr 25fr 20fr 15fr;
  gap: 3px;
  height: 0.75rem;
  margin: 1.25rem 0 0.4rem;
}

.scale span {
  border-radius: 2px;
  opacity: 0.28;
}

.scale .band-high-risk { background: var(--band-high-risk); }
.scale .band-crowded { background: var(--band-crowded); }
.scale .band-mostly-clear { background: var(--band-mostly-clear); }
.scale .band-highly-unique { background: var(--band-highly-unique); }

.scale .marker {
  position: absolute;
  top: -0.375rem;
  left: var(--at);
  width: 4px;
  height: 1.5rem;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--ink);
  opacity: 1;
  animation: slide-in 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes slide-in {
  from { left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .scale .marker { animation: none; }
}

.scale-labels {
  display: grid;
  grid-template-columns: 40fr 25fr 20fr 15fr;
  gap: 3px;
  color: var(--ink-soft);
  font-size: 0.8125rem;
  line-height: 1.3;
}

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.warnings {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.warnings li {
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  border-left: 4px solid var(--band-crowded);
}

.warnings li.blocker {
  border-left-color: var(--taken);
  font-weight: 600;
}

.availability {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.75rem 1rem;
  margin: 0;
}

.availability dt {
  font-weight: 700;
}

.availability dd {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
}

.chip {
  padding: 0.05rem 0.6rem;
  border: 1.5px solid currentColor;
  border-radius: 999px;
  font-size: 0.9375rem;
}

.chip.free { color: var(--free); }
.chip.taken { color: var(--taken); }

.matches {
  margin: 0;
  padding: 0;
  list-style: none;
}

.matches li {
  display: grid;
  grid-template-columns: 1fr 6rem;
  gap: 0.15rem 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--rule);
}

.match-name {
  font-weight: 700;
  overflow-wrap: anywhere;
}

.match-detail {
  grid-column: 1;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.risk {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  text-align: right;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.risk-bar {
  display: block;
  height: 0.4rem;
  margin-top: 0.25rem;
  border-radius: 2px;
  background: var(--rule);
}

.risk-bar span {
  display: block;
  height: 100%;
  width: var(--risk);
  border-radius: 2px;
  background: var(--taken);
}

.empty,
.hint {
  color: var(--ink-soft);
}

.hint {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
}

@media (max-width: 30rem) {
  .masthead { margin-bottom: 2.5rem; }
  button { margin-left: 0; width: 100%; }
  .availability { grid-template-columns: 1fr; }
  .scale-labels { font-size: 0.75rem; }
}