:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5b6573;
  --accent: #0078d4;
  --accent-hover: #106ebe;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 560px;
  margin: 48px auto;
  padding: 32px;
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  text-align: center;
}

h1 { font-size: 1.6rem; margin: 12px 0 24px; }

.env {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: #e1e4e8;
}
.env-dev { background: #d1f0d8; color: #146c2e; }
.env-test { background: #fde7c4; color: #8a4b00; }

.buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

button {
  min-width: 120px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button:hover { background: var(--accent-hover); }
button.reset { background: #6e7781; }

.results { display: flex; gap: 12px; justify-content: center; margin: 28px 0; }
.result {
  flex: 1;
  padding: 16px;
  border-radius: 8px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.result strong { font-size: 2rem; }

footer { color: var(--muted); font-size: 0.8rem; }