/* styles.css */
:root {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  line-height: 1.4;
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #f6f7fb;
}

.card {
  width: min(720px, calc(100% - 32px));
  background: #fff;
  border: 1px solid #e8eaf1;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(20, 20, 40, 0.08);
}

h1 {
  margin: 0 0 8px 0;
  font-size: 1.4rem;
}

.muted {
  margin: 0 0 16px 0;
  color: #5b6270;
}

button {
  appearance: none;
  border: 1px solid #d7dbea;
  background: #111827;
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  opacity: 0.92;
}

.result {
  margin-top: 16px;
  padding: 12px;
  border: 1px dashed #d7dbea;
  border-radius: 12px;
  min-height: 24px;
}