* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: #f7f7f7;
  color: #111;
}

.header {
  padding: 20px;
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
}

.brand {
  font-size: 26px;
  font-weight: 700;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

.tool h1 {
  margin-bottom: 16px;
  font-size: 22px;
}

textarea {
  width: 100%;
  height: 200px;
  padding: 14px;
  font-size: 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
  resize: vertical;
}

.controls {
  margin: 16px 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.controls button {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid #ddd;
  background: #fff;
  cursor: pointer;
}

.controls button:hover {
  background: #f0f0f0;
}

.line {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid #e5e5e5;
}

.de {
  font-weight: 500;
}

.ru {
  color: #444;
}

.hidden {
  display: none;
}

.footer {
  margin-top: 60px;
  padding: 20px;
  border-top: 1px solid #e5e5e5;
  background: #fff;
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer a {
  text-decoration: none;
  color: #555;
  font-size: 14px;
}

@media (max-width: 768px) {
  .line {
    grid-template-columns: 1fr;
  }
}