* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Amiri', serif;
  line-height: 1.9;
  background: #f7f4ee;
  color: #1f2937;
}

.header {
  background: linear-gradient(135deg, #0e5a3a, #178a5c);
  color: #fff;
  text-align: center;
  padding: 2.5rem 1rem 2rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 820px;
  margin: 0 auto 1.5rem;
  gap: .5rem;
  flex-wrap: wrap;
}

.home-link {
  color: #eafff5;
  text-decoration: none;
  font-size: .95rem;
  font-family: 'Inter', sans-serif;
}

.home-link:hover {
  text-decoration: underline;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid rgba(255, 255, 255, .4);
  border-radius: 8px;
  overflow: hidden;
}

.lang-btn {
  background: transparent;
  border: none;
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: .9rem;
  padding: .4rem .9rem;
  cursor: pointer;
}

.lang-btn.active {
  background: #fff;
  color: #0e5a3a;
  font-weight: 600;
}

.header h1 {
  margin: 0 0 .5rem;
  font-size: 2rem;
}

.header p {
  margin: 0;
  opacity: .92;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

.area {
  width: 100%;
  min-height: 180px;
  padding: 1rem;
  font-family: inherit;
  font-size: 1.35rem;
  line-height: 2.2;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  resize: vertical;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1rem;
  align-items: center;
}

.btn {
  padding: .55rem 1.2rem;
  font-family: inherit;
  font-size: 1.05rem;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  background: #fff;
  cursor: pointer;
  transition: background .15s;
}

.btn:hover {
  background: #f3f4f6;
}

.btn.primary {
  background: #0e5a3a;
  border-color: #0e5a3a;
  color: #fff;
}

.btn.primary:hover {
  background: #0b4730;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: 1rem;
}

.output {
  margin-top: 2rem;
}

.output h2 {
  font-size: 1.3rem;
  margin: 0 0 .6rem;
}

.result {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 1.2rem;
  font-size: 1.5rem;
  line-height: 2.4;
  min-height: 80px;
}

.status {
  color: #6b7280;
  font-size: .95rem;
  margin-top: .5rem;
}

.about {
  margin-top: 2.5rem;
  padding: 1rem 1.2rem;
  background: #eef5f1;
  border-radius: 10px;
  border-right: 4px solid #178a5c;
}

.about h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.footer {
  text-align: center;
  padding: 1.5rem;
  color: #6b7280;
}

.footer a {
  color: #0e5a3a;
}