:root {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #627083;
  --line: #d9e0e8;
  --paper: #f7f4ed;
  --panel: #ffffff;
  --green: #19795b;
  --amber: #a15c08;
  --red: #ad2f2f;
  --blue: #2b5c88;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #f7f4ed 0%, #edf3f7 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.app {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: end;
  min-height: 220px;
  padding: 28px 0 26px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: clamp(36px, 6vw, 66px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 19px;
  letter-spacing: 0;
}

.intro {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.source {
  border-left: 4px solid var(--green);
  padding: 16px 0 16px 18px;
  background: rgba(255, 255, 255, 0.45);
}

.source span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.source strong {
  display: block;
  font-size: 22px;
  line-height: 1.35;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr);
  gap: 18px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 18px 40px rgba(31, 41, 51, 0.08);
}

form.panel,
.result-panel {
  padding: 22px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 20px;
}

.ghost {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fafc;
  color: var(--blue);
  font-weight: 700;
  cursor: pointer;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: #394656;
  font-size: 14px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 11px;
  color: var(--ink);
  font: inherit;
}

input:focus,
select:focus {
  outline: 3px solid rgba(43, 92, 136, 0.16);
  border-color: var(--blue);
}

fieldset {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

legend {
  padding: 0 8px;
  color: var(--muted);
  font-weight: 800;
}

.check {
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  font-weight: 600;
  line-height: 1.45;
}

.check input {
  min-height: auto;
  margin-top: 2px;
}

.badge {
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.badge.good {
  background: rgba(25, 121, 91, 0.12);
  color: var(--green);
}

.badge.warn {
  background: rgba(161, 92, 8, 0.14);
  color: var(--amber);
}

.badge.bad {
  background: rgba(173, 47, 47, 0.12);
  color: var(--red);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  min-height: 92px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px;
  background: #fbfcfd;
}

.metric span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.metric strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 22px;
}

.rule-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.rule {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  line-height: 1.45;
}

.rule-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  font-weight: 900;
}

.rule.pass .rule-icon {
  background: var(--green);
}

.rule.fail .rule-icon {
  background: var(--red);
}

.rule.warn .rule-icon {
  background: var(--amber);
}

.rule strong {
  display: block;
  margin-bottom: 3px;
}

.rule span {
  color: var(--muted);
}

.note {
  margin-top: 18px;
  border-left: 4px solid var(--blue);
  padding: 12px 14px;
  background: #f5f8fb;
  color: #334155;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .workspace {
    gap: 14px;
  }
}

@media (max-width: 560px) {
  .app {
    width: min(100% - 20px, 1180px);
    padding: 18px 0;
  }

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

  form.panel,
  .result-panel {
    padding: 16px;
  }

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