:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --line: #cbd5e1;
  --line-strong: #94a3b8;
  --text: #172033;
  --muted: #5b677a;
  --blue: #0b63ce;
  --blue-dark: #084a9b;
  --amber: #b7791f;
  --amber-bg: #fff7e6;
  --green: #147a43;
  --green-bg: #e9f8ef;
  --red: #b42318;
  --red-bg: #fff1f0;
  --code: #0f172a;
  --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
  font-family: "Aptos", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #eef3f8 0, var(--bg) 420px);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

code,
pre,
.uuid-output,
output,
td {
  overflow-wrap: anywhere;
}

pre {
  margin: 0;
  padding: 16px;
  overflow: auto;
  background: #101828;
  color: #eef4ff;
  border: 1px solid #0b1220;
  border-radius: 6px;
}

code {
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}

.site-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 28px;
}

.brand {
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 24px;
  align-items: stretch;
}

.hero h1 {
  max-width: 840px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.2rem, 6vw, 5.6rem);
  font-weight: 700;
  line-height: 0.96;
}

.hero-copy {
  max-width: 660px;
  color: var(--muted);
  font-size: 1.1rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-panel,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.status-panel {
  padding: 20px;
}

.status-panel h2,
.panel h2,
.panel h3 {
  margin: 0;
}

.status-line {
  margin: 14px 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 700;
}

.status-ok,
.chip-ok {
  background: var(--green-bg);
  border-color: #9ad7b0;
  color: var(--green);
}

.status-warn,
.status-pending,
.chip-warn {
  background: var(--amber-bg);
  border-color: #f1cc7a;
  color: var(--amber);
}

.status-error,
.chip-error {
  background: var(--red-bg);
  border-color: #f3a7a0;
  color: var(--red);
}

.support-grid,
.toggle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto 64px;
  padding: 0 24px;
}

.panel {
  padding: 22px;
}

.panel-primary,
.advanced-panel,
.docs-panel {
  grid-column: 1 / -1;
}

.panel-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.button-row,
.input-action {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.button {
  min-height: 42px;
  border: 1px solid var(--blue);
  border-radius: 6px;
  padding: 9px 14px;
  background: var(--blue);
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
}

.button:hover {
  background: var(--blue-dark);
}

.button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(11, 99, 206, 0.28);
  outline-offset: 2px;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.button-ghost {
  background: #ffffff;
  color: var(--blue);
}

.button-ghost:hover {
  background: #eaf2ff;
}

.button-strong {
  background: #074ea8;
  border-color: #074ea8;
}

.uuid-output {
  display: block;
  min-height: 64px;
  margin-bottom: 18px;
  padding: 16px;
  border: 1px solid var(--line-strong);
  border-left: 5px solid var(--blue);
  border-radius: 6px;
  background: #f8fbff;
  color: var(--code);
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 1.08rem;
  font-weight: 800;
}

label,
legend {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 800;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 9px 11px;
  background: #ffffff;
  color: var(--text);
}

textarea {
  resize: vertical;
}

.control-row {
  margin-bottom: 22px;
}

.input-action input {
  flex: 1 1 280px;
}

.split,
.snippet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.definition-grid {
  display: grid;
  grid-template-columns: minmax(120px, 0.45fr) minmax(0, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--line);
}

.definition-grid dt,
.definition-grid dd {
  margin: 0;
  padding: 9px 10px;
  background: #ffffff;
}

.definition-grid dt {
  color: var(--muted);
  font-weight: 800;
}

.hashes dd,
.result-grid output,
td:nth-child(3) {
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.88rem;
}

.notice {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 6px;
  font-weight: 700;
}

.warning {
  border: 1px solid #f1cc7a;
  background: var(--amber-bg);
  color: #7a4b05;
}

fieldset {
  margin: 0 0 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.segmented label,
.toggle-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.mode-panel {
  margin-bottom: 16px;
}

.hidden {
  display: none;
}

.number-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(130px, 1fr));
  gap: 10px 14px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0;
}

.result-grid div {
  min-height: 76px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
}

.result-grid span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

caption {
  padding: 10px;
  text-align: left;
  font-weight: 800;
}

th,
td {
  padding: 10px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.plain-list {
  margin: 0;
  padding-left: 20px;
}

.plain-list li + li {
  margin-top: 8px;
}

@media (max-width: 900px) {
  .hero,
  .page-grid,
  .split,
  .snippet-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .topbar,
  .panel-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .site-header,
  .page-grid {
    padding-left: 14px;
    padding-right: 14px;
  }

  .panel,
  .status-panel {
    padding: 16px;
  }

  .definition-grid,
  .number-grid {
    grid-template-columns: 1fr;
  }
}

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