* { box-sizing: border-box; }

:root { color-scheme: light; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
  background: #f6f7fb;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 20px; }

h1 { font-size: 26px; margin: 10px 0 16px; }

.card {
  background: white;
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 6px 20px rgba(0,0,0,.06);
}

.row { display: grid; gap: 8px; margin-bottom: 14px; }

label { font-size: 14px; color: #333; }

input, select {
  width: 100%;
  padding: 12px 12px;
  border: 1px solid #dfe3ee;
  border-radius: 10px;
  font-size: 16px;
  background: #fff;
}

button {
  padding: 12px;
  border: 0;
  border-radius: 10px;
  font-size: 15px;
  cursor: pointer;
  background: #111;
  color: #fff;
}

button.ghost { background: #eef1f7; color: #111; }

.grid { display: grid; gap: 14px; }

.hint {
  margin: 0;
  font-size: 12px;
  color: #6b7280;
}

.result {
  margin-top: 8px;
  padding: 12px;
  background: #f3f4f6;
  border-radius: 10px;
  font-size: 15px;
  word-break: break-word;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.footer { margin-top: 14px; color: #6b7280; text-align: center; }