:root {
  color-scheme: light;
  --bg: #f3f6f4;
  --ink: #14201a;
  --muted: #5b6b62;
  --panel: #ffffff;
  --line: #d5e0d9;
  --accent: #0f6b4c;
  --ok: #0f6b4c;
  --bad: #9b1c1c;
  --font: "IBM Plex Sans KR", "Pretendard", "Noto Sans KR", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, #d9efe4 0%, transparent 42%),
    radial-gradient(circle at 90% 10%, #e7eef8 0%, transparent 40%),
    var(--bg);
}

.wrap {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

header p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.5;
}

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

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem 1.2rem;
}

.panel h2 {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
}

.field {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.field span {
  font-size: 0.85rem;
  color: var(--muted);
}

select,
input[type="file"],
button {
  font: inherit;
}

select {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.meta {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  word-break: break-all;
}

button#compare {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.8rem 1.3rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

button#compare:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.status {
  min-height: 1.4rem;
  margin: 0.9rem 0;
  color: var(--muted);
}

.result {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
}

.result .badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.result .badge.ok {
  background: #e5f6ee;
  color: var(--ok);
}

.result .badge.bad {
  background: #fde8e8;
  color: var(--bad);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
}

.metric .label {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
}

.metric .value {
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 800px) {
  .panels,
  .metrics {
    grid-template-columns: 1fr;
  }
}