/* DNS Lookup tool page */
.tool-page { padding: 2.5rem 0 3.5rem; min-height: calc(100vh - var(--header-h) - 120px); }
.tool-layout { max-width: 800px; }
.tool-header { margin-bottom: 1.75rem; }
.tool-header h1 { font-size: clamp(1.6rem, 4vw, 2rem); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 0.5rem; }
.tool-lead { margin: 0; color: var(--text-muted); font-size: 1rem; max-width: 540px; }
.tool-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem 1.35rem; margin-bottom: 1.25rem; }
.field-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.45rem; color: var(--text-muted); }
.tool-input-row { display: flex; gap: 0.75rem; }
.tool-input-row input {
  flex: 1; min-width: 0; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-family: inherit; font-size: 0.95rem;
  padding: 0.7rem 0.9rem; outline: none;
}
.tool-input-row input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.tool-input-row input::placeholder { color: var(--text-dim); }
.field-hint { margin: 0.55rem 0 0; font-size: 0.8rem; color: var(--text-dim); }
.field-error { margin: 0.55rem 0 0; font-size: 0.85rem; color: #f87171; }
.tool-status {
  margin-bottom: 1.25rem; padding: 0.85rem 1rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-muted); font-size: 0.9rem;
}
.tool-status.loading { border-color: rgba(59, 130, 246, 0.4); color: var(--accent-hover); }
.tool-status.error { border-color: rgba(248, 113, 113, 0.45); color: #fca5a5; }
.dns-results-meta h2 { font-size: 1.1rem; font-weight: 600; margin: 0 0 1rem; }
.dns-results-meta code { font-family: var(--mono); color: var(--accent-hover); font-size: 0.95em; }
.dns-record-grid { display: grid; gap: 0.85rem; }
.record-card {
  background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-sm);
  padding: 1rem 1.15rem;
}
.record-card h3 { margin: 0 0 0.65rem; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; }
.record-type {
  display: inline-block; padding: 0.2rem 0.5rem; border-radius: 4px;
  background: var(--accent-soft); color: var(--accent-hover); font-family: var(--mono); font-size: 0.75rem;
}
.record-list { margin: 0; padding: 0; list-style: none; }
.record-list li { padding: 0.3rem 0; border-top: 1px solid var(--border-subtle); }
.record-list li:first-child { border-top: 0; padding-top: 0; }
.record-list code {
  font-family: var(--mono); font-size: 0.85rem; color: var(--text); word-break: break-all; white-space: pre-wrap;
}
.record-empty { margin: 0; font-size: 0.85rem; color: var(--text-dim); }
@media (max-width: 560px) {
  .tool-input-row { flex-direction: column; }
  .tool-input-row .btn { width: 100%; }
}