:root {
  color-scheme: light;
  --ink: #132d32;
  --muted: #587075;
  --paper: #f8f5ed;
  --card: #fffdf7;
  --line: #cad7d4;
  --sea: #087f79;
  --sea-dark: #075e5a;
  --coral: #d95f45;
  --gold: #d6a63b;
  --shadow: 0 22px 70px rgba(24, 63, 66, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(214, 166, 59, 0.16), transparent 28rem),
    radial-gradient(circle at 88% 0%, rgba(8, 127, 121, 0.16), transparent 34rem),
    var(--paper);
  font-family: "IBM Plex Sans", "Aptos", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--sea-dark);
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
}

.stamp {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 0.42fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: end;
  padding: clamp(54px, 9vw, 108px) 0 52px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 650;
  line-height: 1.05;
}

h1 {
  max-width: 830px;
  margin: 0;
  font-size: clamp(2.9rem, 8vw, 6.6rem);
  letter-spacing: -0.055em;
}

.dek {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.notice {
  padding: 18px 20px;
  border: 1px solid rgba(8, 127, 121, 0.25);
  border-radius: 18px;
  background: rgba(255, 253, 247, 0.72);
  color: var(--muted);
  font-size: 0.92rem;
}

.notice strong {
  color: var(--ink);
}

.workspace {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 127, 121, 0.06);
}

.workspace-header h2 {
  margin: 0;
  font-size: 1.45rem;
}

.status-pill {
  padding: 6px 11px;
  border-radius: 999px;
  background: #e6f5f2;
  color: var(--sea-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.workspace-body {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  min-height: 480px;
}

.controls,
.result {
  padding: clamp(24px, 5vw, 44px);
}

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

.result {
  background: #f2f8f6;
}

.field {
  margin-bottom: 26px;
}

.field label,
.field legend {
  display: block;
  margin-bottom: 9px;
  color: var(--ink);
  font-weight: 700;
}

.field small {
  display: block;
  margin-top: 7px;
  color: var(--muted);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--sea);
}

.checks {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  border: 0;
}

.check {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}

.check input {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--sea);
}

.check span {
  color: var(--muted);
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

button {
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: var(--sea);
  color: white;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

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

button.secondary {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
}

.metric {
  margin-bottom: 32px;
}

.metric-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.metric-value {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(2.1rem, 5vw, 3.8rem);
  line-height: 1;
}

.log {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.log li {
  padding: 10px 0 10px 16px;
  border-left: 3px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.log li.pass {
  border-color: var(--sea);
  color: var(--ink);
}

.log li.fail {
  border-color: var(--coral);
  color: var(--ink);
}

.progress-track {
  overflow: hidden;
  height: 12px;
  margin: 14px 0 28px;
  border-radius: 999px;
  background: #dfeae7;
}

.progress-bar {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--sea), #29a99f);
  transition: width 220ms ease;
}

.notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 46px 0;
}

.note {
  padding: 24px;
  border-top: 3px solid var(--gold);
  background: rgba(255, 253, 247, 0.68);
}

.note h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.source {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 20px;
  padding: 28px 30px;
  border-radius: 20px;
  background: var(--ink);
  color: white;
}

.source p {
  max-width: 690px;
  margin: 0;
  color: #cfe1df;
  font-size: 0.9rem;
}

.source a {
  flex: 0 0 auto;
  padding: 11px 16px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.source a:hover {
  border-color: white;
}

.footer {
  padding-top: 32px;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (max-width: 780px) {
  .hero,
  .workspace-body {
    grid-template-columns: 1fr;
  }

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

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

  .source {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .progress-bar {
    transition: none;
  }
}