/* ── Light theme for dns-lg ── */

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: #ffffff;
  color: #111;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

header {
  background: #f5f5f7;
  border-bottom: 1px solid #ddd;
  padding: .8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}

header h1 {
  font-size: 1.1rem;
  margin: 0;
}

main {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1.2rem 2rem;
  width: 100%;
}

h2 {
  font-size: 1rem;
  margin: 1.5rem 0 .5rem;
  color: #333;
}

form {
  margin-bottom: 1rem;
}

form p {
  margin: 0 0 .4rem;
  font-size: .9rem;
  color: #555;
  font-weight: 500;
}

input[type="text"] {
  padding: .45rem .7rem;
  border: 1px solid #ccc;
  border-radius: .5rem;
  background: #f0f0f2;
  color: #111;
  font-size: .95rem;
  outline: none;
  width: 320px;
  max-width: 80vw;
}

input[type="text"]:focus {
  border-color: #999;
}

input[type="submit"] {
  padding: .45rem 1rem;
  border: 1px solid #1d4ed8;
  border-radius: .5rem;
  background: #2563eb;
  color: #fff;
  font-size: .95rem;
  cursor: pointer;
  font-weight: 500;
}

input[type="submit"]:hover {
  background: #1d4ed8;
}

pre {
  background: #f5f5f7;
  border: none;
  border-radius: 0 0 .5rem .5rem;
  padding: .8rem 1rem;
  margin: 0;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .85rem;
  color: #1e293b;
  line-height: 1.5;
}

/* ── Result cards ── */

.card {
  border: 1px solid #ddd;
  border-radius: .5rem;
  margin-bottom: 1rem;
  background: #f5f5f7;
  overflow: hidden;
}

.card-header {
  background: #e8e8ec;
  padding: .5rem 1rem;
  font-weight: 600;
  font-size: .9rem;
  color: #333;
  border-bottom: 1px solid #ddd;
}

.footer {
  background: #f5f5f7;
  color: #555;
  padding: .8rem;
  border-top: 1px solid #ddd;
  text-align: center;
  font-size: .85rem;
  margin-top: auto;
}

.footer a {
  color: #2563eb;
}

/* ── Spinner ── */

.spinner {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 1rem 0;
  font-size: .9rem;
  color: #555;
}

.spinner .dot {
  width: 18px;
  height: 18px;
  border: 2.5px solid #ddd;
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  main {
    padding: 1rem .8rem 1.5rem;
  }
  input[type="text"] {
    width: 100%;
  }
}