/* ── Google Fonts ──────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ─────────────────────────────────── */
:root {
  --bg:          #ffffff;
  --bg-gray:     #f7f8fa;
  --bg-card:     #ffffff;
  --border:      #e2e5ea;
  --border-dark: #c8cdd6;
  --accent:      #111827;
  --accent-blue: #2563eb;
  --text:        #111827;
  --text-2:      #4b5563;
  --text-3:      #9ca3af;
  --font:        'Inter', system-ui, sans-serif;
  --mono:        'JetBrains Mono', 'Fira Code', monospace;
  --radius:      8px;
  --radius-lg:   12px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow:      0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);

  /* record type colors — muted palette */
  --c-a:     #2563eb;
  --c-aaaa:  #7c3aed;
  --c-mx:    #d97706;
  --c-ns:    #0891b2;
  --c-txt:   #16a34a;
  --c-cname: #0284c7;
  --c-soa:   #b45309;
  --c-caa:   #be185d;
  --c-ptr:   #475569;
  --c-srv:   #0f766e;
  --c-ds:    #dc2626;
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font); border: none; outline: none; }
input, select { font-family: var(--font); }

/* ── Header ─────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 56px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  flex-shrink: 0;
  letter-spacing: -0.3px;
}
.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--text);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
}
.logo-dot { color: var(--accent-blue); }

.header-search {
  flex: 1;
  max-width: 480px;
  display: flex;
  gap: 8px;
}
.header-search input {
  flex: 1;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 13px;
  color: var(--text);
  font-size: 13px;
  transition: border-color .15s, box-shadow .15s;
}
.header-search input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
  background: #fff;
}
.header-search input::placeholder { color: var(--text-3); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  transition: all .15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--text);
  color: #fff;
  border: 1px solid var(--text);
}
.btn-primary:hover { background: #374151; border-color: #374151; }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }
.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-dark); background: var(--bg-gray); }
.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11.5px; }

/* ── Hero ───────────────────────────────────────────── */
.hero {
  background: var(--bg-gray);
  border-bottom: 1px solid var(--border);
  padding: 56px 24px 48px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 12px;
}
.hero h1 span { color: var(--accent-blue); }
.hero-sub {
  font-size: 15px;
  color: var(--text-2);
  max-width: 500px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

/* ── Search Box ─────────────────────────────────────── */
.search-wrap { max-width: 680px; margin: 0 auto; }
.search-box {
  display: flex;
  background: #fff;
  border: 1.5px solid var(--border-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s, box-shadow .15s;
}
.search-box:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12), var(--shadow-sm);
}
#domain-input {
  flex: 1;
  background: none;
  border: none;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--text);
}
#domain-input:focus { outline: none; }
#domain-input::placeholder { color: var(--text-3); }
#lookup-btn {
  margin: 5px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  background: var(--text);
  color: #fff;
  border: none;
  transition: background .15s;
  flex-shrink: 0;
}
#lookup-btn:hover:not(:disabled) { background: #374151; }
#lookup-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Filter Rows ─────────────────────────────────────── */
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.filter-label {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
  white-space: nowrap;
}

/* ── Record Type Chips ──────────────────────────────── */
.type-chips { display: flex; gap: 5px; flex-wrap: wrap; }
.chip {
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  font-family: var(--mono);
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text-2);
  cursor: pointer;
  transition: all .13s;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.chip:hover { border-color: var(--border-dark); color: var(--text); }
.chip.active {
  color: #fff !important;
  border-color: transparent;
}
.chip[data-type="ALL"].active  { background: #111827; }
.chip[data-type="A"].active    { background: var(--c-a); }
.chip[data-type="AAAA"].active { background: var(--c-aaaa); }
.chip[data-type="MX"].active   { background: var(--c-mx); }
.chip[data-type="NS"].active   { background: var(--c-ns); }
.chip[data-type="TXT"].active  { background: var(--c-txt); }
.chip[data-type="CNAME"].active{ background: var(--c-cname); }
.chip[data-type="SOA"].active  { background: var(--c-soa); }
.chip[data-type="CAA"].active  { background: var(--c-caa); }
.chip[data-type="PTR"].active  { background: var(--c-ptr); }
.chip[data-type="SRV"].active  { background: var(--c-srv); }
.chip[data-type="DS"].active   { background: var(--c-ds); }

/* ── Provider Tabs ──────────────────────────────────── */
.provider-tabs { display: flex; gap: 5px; flex-wrap: wrap; }
.provider-tab {
  padding: 4px 12px;
  border-radius: var(--radius);
  font-size: 12.5px;
  font-weight: 500;
  background: #fff;
  border: 1.5px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  transition: all .13s;
}
.provider-tab:hover { border-color: var(--border-dark); color: var(--text); }
.provider-tab.active { border-color: var(--accent-blue); background: rgba(37,99,235,.06); color: var(--accent-blue); font-weight: 600; }
.provider-tab.compare-active { border-color: #111827; background: #111827; color: #fff; }

/* ── Main Wrap ──────────────────────────────────────── */
.main-wrap { max-width: 1100px; margin: 0 auto; padding: 32px 24px 80px; }

/* ── Results Header ─────────────────────────────────── */
#results-area { }
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}
.results-domain {
  font-size: 14.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}
.results-domain code {
  font-family: var(--mono);
  color: var(--accent-blue);
  font-size: 15px;
  font-weight: 500;
}
.results-actions { display: flex; gap: 8px; }

/* ── Stats Bar ──────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 0;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}
.stat {
  flex: 1;
  padding: 14px 20px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.stat:last-child { border-right: none; }
.stat-val { font-size: 20px; font-weight: 700; color: var(--text); }
.stat-lbl { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: .5px; margin-top: 1px; }

/* ── Result Table ───────────────────────────────────── */
.result-table-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.result-table-wrap.no-stats {
  border-radius: var(--radius-lg);
  margin-top: 0;
}
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.result-table thead th {
  background: var(--bg-gray);
  padding: 10px 18px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-3);
  border-bottom: 1px solid var(--border);
}
.result-table tbody td {
  padding: 11px 18px;
  border-bottom: 1px solid #f3f4f6;
  vertical-align: top;
}
.result-table tbody tr:last-child td { border-bottom: none; }
.result-table tbody tr:hover { background: #f9fafb; }
.td-mono { font-family: var(--mono); color: var(--text); word-break: break-all; font-size: 12.5px; }
.td-ttl  { font-family: var(--mono); color: var(--text-3); white-space: nowrap; font-size: 12px; }
.td-name { font-family: var(--mono); color: var(--text-2); font-size: 12px; }

/* ── Type Badge ─────────────────────────────────────── */
.type-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10.5px;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: #fff;
  white-space: nowrap;
}
.type-badge.A     { background: var(--c-a); }
.type-badge.AAAA  { background: var(--c-aaaa); }
.type-badge.MX    { background: var(--c-mx); }
.type-badge.NS    { background: var(--c-ns); }
.type-badge.TXT   { background: var(--c-txt); }
.type-badge.CNAME { background: var(--c-cname); }
.type-badge.SOA   { background: var(--c-soa); }
.type-badge.CAA   { background: var(--c-caa); }
.type-badge.PTR   { background: var(--c-ptr); }
.type-badge.SRV   { background: var(--c-srv); }
.type-badge.DS    { background: var(--c-ds); }
.type-badge.DNSKEY{ background: #475569; }

/* ── Copy Button ─────────────────────────────────────── */
.copy-record-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text-3);
  padding: 2px 6px;
  font-size: 11px;
  cursor: pointer;
  transition: all .12s;
}
.copy-record-btn:hover { border-color: var(--border); color: var(--accent-blue); background: #f0f5ff; }

/* ── Compare Grid ───────────────────────────────────── */
.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}
.provider-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-gray);
}
.panel-provider-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.panel-status { font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }
.panel-status.ok { color: #16a34a; }

.record-type-section { padding: 0 16px; }
.record-type-section + .record-type-section { border-top: 1px solid #f3f4f6; }
.type-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0 6px;
}
.type-count { font-size: 11px; color: var(--text-3); margin-left: auto; }

.record-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 0;
  border-top: 1px solid #f3f4f6;
  font-size: 12px;
}
.record-row:first-child { border-top: none; }
.record-value {
  font-family: var(--mono);
  color: var(--text);
  flex: 1;
  word-break: break-all;
  line-height: 1.5;
  font-size: 12px;
}
.record-ttl {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  white-space: nowrap;
}
.no-records {
  padding: 10px 0 12px;
  font-size: 12px;
  color: var(--text-3);
  font-style: italic;
}

/* ── Skeleton ───────────────────────────────────────── */
@keyframes shimmer {
  0%  { background-position: -600px 0; }
  100%{ background-position:  600px 0; }
}
.skeleton {
  background: linear-gradient(90deg, #f3f4f6 25%, #e9eaec 50%, #f3f4f6 75%);
  background-size: 1200px 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 5px;
}
.sk-line { height: 13px; margin: 8px 0; }
.sk-line.w60 { width: 60%; }
.sk-line.w80 { width: 80%; }
.sk-line.w40 { width: 40%; }

/* ── Fade In ────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn .25s ease both; }

/* ── Spinner ─────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 15px; height: 15px;
  border: 2px solid #e5e7eb;
  border-top-color: #111827;
  border-radius: 50%;
  animation: spin .65s linear infinite;
  flex-shrink: 0;
}

/* ── Alert ──────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 13.5px;
  line-height: 1.5;
  margin-bottom: 16px;
}
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-info  { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

/* ── Info Section ───────────────────────────────────── */
.info-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

/* ── Record Type Reference ──────────────────────────── */
.type-ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.type-ref-card {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.type-ref-card .type-badge { flex-shrink: 0; margin-top: 2px; }
.type-ref-card .type-name  { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.type-ref-card .type-desc  { font-size: 12px; color: var(--text-2); line-height: 1.5; }

/* ── FAQ Grid ───────────────────────────────────────── */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.faq-card {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.faq-card h3 { font-size: 13.5px; font-weight: 600; margin-bottom: 7px; color: var(--text); }
.faq-card p  { font-size: 13px; color: var(--text-2); line-height: 1.65; }

/* ── Toast ──────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #111827;
  color: #fff;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .2s, transform .2s;
  z-index: 999;
  pointer-events: none;
}
#toast.show { opacity: 1; transform: translateY(0); }

/* ── Footer ─────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-gray);
  padding: 20px 24px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-3);
}
footer a { color: var(--text-2); }
footer a:hover { color: var(--accent-blue); }
footer strong { color: var(--text-2); }

/* ── Divider ────────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 16px;
}
.divider-text { font-size: 12px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .5px; white-space: nowrap; }
.divider-line { flex: 1; height: 1px; background: var(--border); }

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { padding: 36px 16px 32px; }
  .hero h1 { font-size: 1.65rem; }
  .hero-sub { font-size: 14px; }
  .main-wrap { padding: 20px 16px 60px; }
  .header-search { display: none; }
  .provider-grid { grid-template-columns: 1fr; }
  .stats-bar { flex-wrap: wrap; }
  .stat { min-width: 50%; border-right: 1px solid var(--border); }
  .result-table { font-size: 12px; }
  .result-table thead { display: none; }
  .result-table tbody td { display: block; padding: 5px 14px; border-bottom: none; }
  .result-table tbody tr { border-bottom: 1px solid #f3f4f6; }
  .result-table tbody tr:last-child { border-bottom: none; }
}