:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #edf2f6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 0;
}

button,
input {
  font: inherit;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}

.shell {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.hero {
  margin-bottom: 1.25rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: #22577a;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
li,
dd {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 19ch;
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

h2 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.25rem, 4vw, 1.75rem);
}

h3 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
}

.lede {
  max-width: 68ch;
  margin: 1rem 0 0;
  color: #43526a;
  font-size: 1.05rem;
  line-height: 1.6;
}

.warning,
.panel {
  border: 1px solid #cbd5e1;
  border-radius: 1rem;
  background: #ffffff;
  box-shadow: 0 0.5rem 1.5rem rgb(15 23 42 / 0.06);
}

.warning {
  margin: 1rem 0;
  padding: 1rem 1.15rem;
  border-color: #d99a28;
  background: #fff8e8;
  line-height: 1.55;
}

.panel {
  min-width: 0;
  margin-top: 1rem;
  padding: clamp(1rem, 4vw, 1.5rem);
}

.supporting,
.field-help {
  color: #596579;
}

.supporting {
  margin: 0 0 1.25rem;
  line-height: 1.55;
}

.input-grid,
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.file-field {
  min-width: 0;
  padding: 1rem;
  border: 1px solid #d7dee8;
  border-radius: 0.75rem;
  background: #f8fafc;
}

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

.file-picker {
  display: inline-block;
  max-width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid #8594a8;
  border-radius: 0.6rem;
  background: #ffffff;
  font-weight: 750;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.visually-hidden:focus-visible + .file-picker,
button:focus-visible,
a:focus-visible {
  outline: 3px solid #efb84c;
  outline-offset: 2px;
}

.selection {
  margin: 0.7rem 0 0;
  color: #334155;
  font-weight: 650;
}

.field-help {
  margin: 0.45rem 0 0;
  font-size: 0.87rem;
  line-height: 1.45;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

button {
  min-height: 2.75rem;
  padding: 0.7rem 1rem;
  border: 1px solid #8594a8;
  border-radius: 0.65rem;
  color: #172033;
  background: #ffffff;
  cursor: pointer;
}

button.primary {
  border-color: #173f5f;
  color: #ffffff;
  background: #173f5f;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.status,
.error {
  margin: 1rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 0.6rem;
}

.status {
  background: #eaf4fb;
}

.error {
  border: 1px solid #b42318;
  color: #7a271a;
  background: #fef3f2;
  font-weight: 700;
}

.result-summary {
  margin: 0.25rem 0 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
}

.counts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.counts div {
  padding: 0.85rem;
  border-radius: 0.7rem;
  background: #eef4f8;
}

.counts dt {
  color: #4b5565;
  font-size: 0.82rem;
}

.counts dd {
  margin: 0.2rem 0 0;
  font-size: 1.1rem;
  font-weight: 800;
}

.stream-list,
.changes ul {
  margin: 0;
  padding-left: 1.35rem;
}

.stream-list li,
.changes li {
  margin: 0.45rem 0;
  line-height: 1.5;
}

.changes {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #d7dee8;
}

.facts p {
  max-width: 76ch;
  line-height: 1.6;
}

a {
  color: #0b5c8e;
  font-weight: 700;
}

[hidden] {
  display: none !important;
}

@media (max-width: 42rem) {
  .shell {
    width: min(100% - 1rem, 72rem);
    padding-top: 1.25rem;
  }

  .input-grid,
  .result-grid,
  .counts {
    grid-template-columns: minmax(0, 1fr);
  }

  .panel {
    border-radius: 0.75rem;
  }
}