:root {
  color-scheme: light;
  --ink: #18202a;
  --muted: #647184;
  --line: #d7dde6;
  --panel: #f8fafc;
  --keep: #177245;
  --drop: #9f2d20;
  --accent: #275da8;
  --gold: #b47713;
  --shadow: 0 18px 50px rgba(24, 32, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #eef2f7;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(420px, 1.08fr);
  gap: 24px;
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px;
}

.workspace,
.results {
  min-width: 0;
}

.workspace {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  gap: 16px;
}

.intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.1rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(72px, 1fr));
  min-width: 276px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.summary-strip span {
  display: grid;
  gap: 2px;
  padding: 12px;
  color: var(--muted);
  font-size: 0.78rem;
}

.summary-strip span + span {
  border-left: 1px solid var(--line);
}

.summary-strip strong {
  color: var(--ink);
  font-size: 1.18rem;
}

.controls {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  background: #ffffff;
}

.controls label,
.editor-label {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

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

output {
  min-width: 4ch;
  text-align: right;
  font-weight: 800;
}

button {
  min-height: 38px;
  border: 1px solid #1d4e91;
  background: var(--accent);
  color: #ffffff;
  padding: 0 14px;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: #1d4e91;
}

textarea {
  width: 100%;
  min-height: 0;
  resize: none;
  border: 1px solid var(--line);
  background: #ffffff;
  color: #1f2937;
  padding: 16px;
  line-height: 1.45;
  box-shadow: var(--shadow);
  tab-size: 2;
}

.results {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 16px;
}

.meter {
  height: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #ffffff;
}

#meterFill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--keep), var(--gold));
  transition: width 160ms ease;
}

.recommendations {
  display: grid;
  gap: 8px;
}

.recommendation {
  border-left: 4px solid var(--gold);
  background: #ffffff;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.item-list {
  display: grid;
  align-content: start;
  gap: 10px;
  overflow: auto;
  padding-right: 4px;
}

.item {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  background: #ffffff;
  padding: 14px;
  box-shadow: var(--shadow);
}

.item-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.item-title {
  min-width: 0;
}

.item-title strong {
  display: block;
  overflow-wrap: anywhere;
}

.meta {
  color: var(--muted);
  font-size: 0.82rem;
}

.pill {
  min-width: 58px;
  border: 1px solid currentColor;
  padding: 4px 8px;
  text-align: center;
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.keep {
  color: var(--keep);
}

.drop {
  color: var(--drop);
}

.score-line {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.score-bar {
  height: 8px;
  overflow: hidden;
  background: var(--panel);
}

.score-bar span {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--accent);
}

.reason {
  margin: 0;
  color: var(--muted);
  line-height: 1.35;
}

.error {
  border-left-color: var(--drop);
  color: var(--drop);
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .intro {
    align-items: stretch;
    flex-direction: column;
  }

  .summary-strip {
    min-width: 0;
  }

  .controls {
    grid-template-columns: 1fr auto;
  }

  .controls label,
  input[type="range"] {
    grid-column: 1 / -1;
  }

  textarea {
    min-height: 420px;
  }
}