/* vercel-doh — DNS query tool styles */
:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-2: #4f46e5;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 8px 24px rgba(16, 24, 40, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --card: #111a2e;
    --text: #e6eaf2;
    --muted: #94a3b8;
    --border: #1e293b;
    --accent: #60a5fa;
    --accent-2: #818cf8;
    --ok: #4ade80;
    --warn: #fbbf24;
    --err: #f87171;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 2rem 1rem 4rem; }

header { text-align: center; margin-bottom: 1.75rem; }
header .logo { font-size: 2.2rem; }
header h1 { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.02em; }
header p { color: var(--muted); font-size: 0.95rem; margin-top: 0.25rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1rem;
}
.card h2 { font-size: 1rem; font-weight: 600; margin-bottom: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }

.query-grid { display: grid; grid-template-columns: 1fr auto; gap: 0.75rem; }
@media (max-width: 600px) { .query-grid { grid-template-columns: 1fr; } }
input[type="text"], select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="text"]:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}
#type { min-width: 9rem; }

.options { display: flex; gap: 1.25rem; margin-top: 0.8rem; flex-wrap: wrap; }
.options label { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--muted); cursor: pointer; user-select: none; }
.options input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: filter 0.15s, transform 0.05s;
}
button:active { transform: translateY(1px); }
#submit-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  min-height: 44px;
}
#submit-button:disabled { opacity: 0.55; 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;
  display: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

.endpoint-row { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
code.endpoint {
  flex: 1; min-width: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  overflow-x: auto;
  white-space: nowrap;
}
.copy-btn {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.hint { font-size: 0.8rem; color: var(--muted); margin-top: 0.5rem; }

.banner {
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.9rem;
  border: 1px solid transparent;
}
.banner.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, transparent); }
.banner.warn { background: color-mix(in srgb, var(--warn) 12%, transparent); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
.banner.err { background: color-mix(in srgb, var(--err) 12%, transparent); color: var(--err); border-color: color-mix(in srgb, var(--err) 35%, transparent); }
.meta { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.8rem; display: flex; gap: 1.2rem; flex-wrap: wrap; }

.section-title { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 1rem 0 0.4rem; }
.records { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.records th, .records td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  word-break: break-all;
}
.records th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
.records td.type { white-space: nowrap; }
.ttl { font-variant-numeric: tabular-nums; }
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}
.record-part { white-space: nowrap; margin-right: 0.4rem; }

details.raw { margin-top: 1rem; }
details.raw summary {
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--muted);
  user-select: none;
}
pre.raw-json {
  margin-top: 0.5rem;
  padding: 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.78rem;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  overflow-x: auto;
  max-height: 320px;
  overflow-y: auto;
  white-space: pre;
}

.placeholder { color: var(--muted); font-size: 0.9rem; text-align: center; padding: 1.5rem 0; }
footer { text-align: center; color: var(--muted); font-size: 0.78rem; margin-top: 2rem; }