/* =========================================================
   DNS Explorer — dark theme, Cloudflare orange accent
   ========================================================= */

:root {
  --bg: #0f172a;
  --bg-elev: #1e293b;
  --bg-input: #0b1220;
  --border: #334155;
  --border-soft: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: #f48120;       /* Cloudflare orange */
  --accent-hover: #ff9540;
  --public: #10b981;
  --private: #f59e0b;
  --local: #3b82f6;
  --cgnat: #a855f7;
  --error: #ef4444;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: dark; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI',
               system-ui, sans-serif;
  background: linear-gradient(180deg, #0f172a 0%, #0a1120 100%);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  padding: 2.5rem 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

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

/* ---------- Header ---------- */
header { text-align: center; margin-bottom: 2rem; }
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.logo { display: inline-block; }
.subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- Query box ---------- */
.query-box {
  display: grid;
  grid-template-columns: 1fr 110px 250px auto;
  gap: 0.75rem;
  background: var(--bg-elev);
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

input, select {
  font-size: 1rem;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.15s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}
input::placeholder { color: var(--text-dim); }

optgroup {
  background: var(--bg-input);
  color: var(--accent);
  font-weight: 600;
  font-style: normal;
}
optgroup option {
  background: var(--bg-input);
  color: var(--text);
  font-weight: 400;
}

button {
  font-size: 1rem;
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--accent);
  color: white;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  align-self: end;
  transition: background 0.15s, transform 0.05s;
}
button:hover { background: var(--accent-hover); }
button:active { transform: scale(0.98); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

#query-btn { height: calc(1rem + 0.7rem * 2 + 2px); }

/* ---------- Presets ---------- */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-elev);
  border-radius: 10px;
  border: 1px solid var(--border-soft);
}
.presets span {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  margin-right: 0.5rem;
}
.presets button {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  align-self: center;
  height: auto;
}
.presets button:hover { background: var(--accent); border-color: var(--accent); }

/* ---------- Status ---------- */
.status {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.status.error { color: var(--error); }
.status.loading::before {
  content: '';
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--text-muted);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 0.5rem;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Result card ---------- */
.result {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-soft);
}
.result-header h2 {
  font-size: 1.5rem;
  font-family: 'SF Mono', Menlo, monospace;
  word-break: break-all;
}
.verdict {
  padding: 0.3rem 0.85rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.verdict.public     { background: var(--public); color: white; }
.verdict.private    { background: var(--private); color: #1e1b08; }
.verdict.localhost  { background: var(--local); color: white; }
.verdict.link-local { background: var(--local); color: white; }
.verdict.cgnat      { background: var(--cgnat); color: white; }
.verdict.mixed      { background: var(--accent); color: white; }
.verdict.nxdomain   { background: var(--error); color: white; }
.verdict.nodata     { background: var(--text-dim); color: white; }
.verdict.cname      { background: var(--accent); color: white; }
.verdict.ns         { background: var(--local); color: white; }
.verdict.mx         { background: var(--cgnat); color: white; }
.verdict.txt        { background: var(--private); color: #1e1b08; }
.verdict.soa        { background: var(--text-dim); color: white; }
.verdict.empty      { background: var(--text-dim); color: white; }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.meta-row span { display: inline-flex; align-items: center; gap: 0.3rem; }

.ip-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.ip-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  font-family: 'SF Mono', Menlo, 'Consolas', monospace;
  font-size: 0.95rem;
}
.ip-class {
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  font-family: -apple-system, system-ui, sans-serif;
}
.ip-class.public     { background: var(--public); color: white; }
.ip-class.private    { background: var(--private); color: #1e1b08; }
.ip-class.localhost  { background: var(--local); color: white; }
.ip-class.link-local { background: var(--local); color: white; }
.ip-class.cgnat      { background: var(--cgnat); color: white; }

.no-records {
  text-align: center;
  color: var(--text-muted);
  padding: 1.5rem;
  font-style: italic;
}

.result h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 1.25rem 0 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-soft);
}
.result h3:first-child { margin-top: 0; }

.ip-item.alias {
  background: rgba(244, 129, 32, 0.06);
  border-color: rgba(244, 129, 32, 0.2);
}
.ip-item.text {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}
.txt-data {
  word-break: break-all;
  white-space: pre-wrap;
  font-size: 0.85rem;
  width: 100%;
}

details {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-soft);
}
details summary {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.9rem;
  user-select: none;
  padding: 0.4rem 0;
}
details summary:hover { color: var(--accent); }
details[open] summary { margin-bottom: 0.75rem; }
pre {
  background: var(--bg-input);
  padding: 1rem;
  border-radius: 8px;
  overflow: auto;
  font-size: 0.8rem;
  border: 1px solid var(--border-soft);
  max-height: 360px;
}

/* ---------- Footer ---------- */
footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-soft);
}

.hidden { display: none; }

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  body { padding: 1.5rem 0.75rem; }
  h1 { font-size: 1.85rem; }
  .query-box { grid-template-columns: 1fr; }
  #query-btn { width: 100%; }
  .result-header h2 { font-size: 1.2rem; }
  .ip-item { font-size: 0.85rem; }
}