:root {
  --primary: #f6821f;
  --primary-dark: #d96e0f;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #1e2430;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --success: #059669;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(30, 36, 48, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: linear-gradient(160deg, #fff7ed 0%, var(--bg) 40%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 20px 32px;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: 2rem;
  letter-spacing: 0.02em;
}

.subtitle {
  color: var(--text-secondary);
  margin-top: 6px;
  font-size: 0.95rem;
}

/* Search */
.search-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.input-group {
  display: flex;
  gap: 12px;
}

#domain-input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  font-size: 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease;
}

#domain-input:focus {
  border-color: var(--primary);
}

#query-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 96px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
  white-space: nowrap;
}

#query-btn:hover:not(:disabled) {
  background: var(--primary-dark);
}

#query-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.examples {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.chip {
  padding: 4px 12px;
  font-size: 0.85rem;
  color: var(--primary-dark);
  background: #fff3e6;
  border: 1px solid #ffd9b3;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.chip:hover {
  background: #ffe4c7;
}

/* Error */
.error-box {
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid #fecaca;
  border-radius: 8px;
  font-size: 0.9rem;
}

/* Result */
.result {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.result-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.result-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.result-title h2 {
  font-size: 1.3rem;
  word-break: break-all;
}

.badge {
  flex-shrink: 0;
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  background: #ecfdf5;
  color: var(--success);
  border: 1px solid #a7f3d0;
}

.badge.not-found {
  background: #fefce8;
  color: #a16207;
  border-color: #fde68a;
}

/* Tabs */
.tabs {
  display: flex;
  background: var(--bg);
  border-radius: 8px;
  padding: 4px;
  gap: 4px;
}

.tab {
  padding: 6px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab.active {
  color: var(--text);
  background: var(--card-bg);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

/* Structured panel */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.info-item {
  padding: 12px 16px;
  background: var(--bg);
  border-radius: 8px;
  min-width: 0;
}

.info-item .label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.info-item .value {
  font-size: 0.95rem;
  font-weight: 500;
  word-break: break-all;
}

.info-item .value a {
  color: var(--primary-dark);
  text-decoration: none;
}

.info-item .value a:hover {
  text-decoration: underline;
}

.list-section {
  margin-top: 18px;
}

.list-section h3 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-list .status-chip {
  padding: 4px 12px;
  font-size: 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #eef2ff;
  color: #4338ca;
  border-radius: 6px;
  word-break: break-all;
}

.ns-list {
  list-style: none;
}

.ns-list li {
  padding: 8px 16px;
  margin-bottom: 6px;
  background: var(--bg);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
}

.meta {
  margin-top: 18px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Raw panel */
.raw-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.raw-toolbar .meta {
  margin-top: 0;
}

.copy-btn {
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--primary-dark);
  background: #fff3e6;
  border: 1px solid #ffd9b3;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.copy-btn:hover {
  background: #ffe4c7;
}

.raw-content {
  max-height: 480px;
  overflow: auto;
  padding: 16px;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Footer */
.footer {
  margin-top: 40px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 28px 14px 24px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .input-group {
    flex-direction: column;
  }

  #query-btn {
    width: 100%;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  .result-header {
    flex-direction: column;
    align-items: stretch;
  }

  .tabs {
    align-self: flex-start;
  }
}