/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f8f8f5;
  --bg2:       #ffffff;
  --bg3:       #f1f1ed;
  --border:    #d0d0ca;
  --border-hi: #b0b0aa;
  --primary:   #16a34a;   /* terminal green */
  --primary-d: #14532d;   /* darker green for hover */
  --cyan:      #0e7490;   /* selected server chips */
  --danger:    #dc2626;
  --text:      #18181b;
  --muted:     #71717a;
  --font-mono: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
}

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ───────────────────────────────────────────────────── */
header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 52px;
  display: flex;
  align-items: center;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 700;
}

/* terminal prompt prefix */
.logo::before {
  content: " ≬ ";
  color: var(--primary);
  font-family: var(--font-mono);
}

.logo-icon { display: none; }           /* hide compass, prompt replaces it */
.logo-text  { color: var(--text); }
.logo-text strong { color: var(--primary); }

.tagline {
  color: var(--muted);
  font-size: .77rem;
  font-family: var(--font-mono);
}

/* ── Main ─────────────────────────────────────────────────────── */
main {
  max-width: 900px;
  width: 100%;
  margin: 1.5rem auto;
  padding: 0 1rem;
  flex: 1;
}

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.1rem 1.3rem;
  margin-bottom: .6rem;
}

/* Section labels styled as code comments: // Hostnames / IP addresses */
.card h2 {
  font-family: var(--font-mono);
  font-size: .77rem;
  font-weight: 400;
  color: var(--muted);
  margin-bottom: .65rem;
}
.card h2::before {
  content: "// ";
  color: var(--primary);
  font-weight: 700;
}

.hint {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
  margin-bottom: .65rem;
}
.hint::before {
  content: "# ";
  color: var(--muted);
}

/* ── Textarea ─────────────────────────────────────────────────── */
textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .88rem;
  padding: .6rem .8rem;
  resize: vertical;
  outline: none;
  transition: border-color 150ms ease;
}
textarea:focus { border-color: var(--primary); }

/* ── Record-type chips ────────────────────────────────────────── */
.type-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  margin-bottom: .7rem;
}

.type-chip {
  display: flex;
  align-items: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .22rem .55rem;
  cursor: pointer;
  font-size: .75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--muted);
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease;
  user-select: none;
}

.type-chip input[type="checkbox"] { display: none; }

.type-chip:has(input:checked) {
  background: #f0fdf4;
  border-color: var(--primary);
  color: var(--primary-d);
}

.type-chip:hover { border-color: var(--border-hi); color: var(--text); }

.type-actions { display: flex; gap: .35rem; }

.type-actions button {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .72rem;
  padding: .18rem .5rem;
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
}
.type-actions button:hover { color: var(--text); border-color: var(--border-hi); }

/* ── Server chips ─────────────────────────────────────────────── */
.server-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  margin-bottom: .7rem;
}

.server-chip {
  display: flex;
  align-items: center;
  gap: .3rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .28rem .7rem;
  cursor: pointer;
  font-size: .78rem;
  font-family: var(--font-mono);
  color: var(--muted);
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease;
  user-select: none;
}

.server-chip input[type="radio"] { display: none; }

.server-chip:has(input:checked) {
  background: #ecfeff;
  border-color: var(--cyan);
  color: var(--cyan);
}

.server-chip:hover { border-color: var(--border-hi); color: var(--text); }
.server-chip em { font-style: normal; opacity: .5; font-size: .7rem; margin-left: .15rem; }

#custom-server-wrap { margin-top: .4rem; }
#custom-server {
  width: 100%;
  max-width: 380px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .85rem;
  padding: .4rem .75rem;
  outline: none;
  transition: border-color 150ms ease;
}
#custom-server:focus { border-color: var(--primary); }

/* ── Submit row ───────────────────────────────────────────────── */
.submit-row {
  display: flex;
  gap: .6rem;
  margin-bottom: 1.5rem;
}

button[type="submit"], .btn-secondary {
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 700;
  padding: .52rem 1.4rem;
  transition: opacity 150ms ease;
}

button[type="submit"] {
  background: var(--primary);
  color: #fff;
}
button[type="submit"]:hover   { opacity: .85; }
button[type="submit"]:disabled { opacity: .35; cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
}
.btn-secondary:hover { color: var(--text); border-color: var(--border-hi); }

/* ── Spinner ──────────────────────────────────────────────────── */
#spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  padding: 2rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .8rem;
}

.spinner-ring {
  width: 26px;
  height: 26px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Results ──────────────────────────────────────────────────── */
#results-section { margin-bottom: 2rem; }

.results-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: .6rem;
}

.results-header h2 {
  font-family: var(--font-mono);
  font-size: .77rem;
  font-weight: 400;
  color: var(--muted);
}
.results-header h2::before {
  content: "// ";
  color: var(--primary);
  font-weight: 700;
}

#results-meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
  flex: 1;
}

#copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .72rem;
  padding: .2rem .55rem;
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
}
#copy-btn:hover { color: var(--text); border-color: var(--border-hi); }

/* ── Result block ─────────────────────────────────────────────── */
.result-block {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: .45rem;
  overflow: hidden;
}

.result-block-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem .85rem;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.rtype-badge {
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  padding: .08rem .4rem;
  border-radius: 2px;
  background: #f0fdf4;
  color: var(--primary-d);
  border: 1px solid var(--primary);
}

.hostname-label {
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.ttl-badge {
  font-size: .68rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

.elapsed-badge {
  font-size: .66rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

.result-answers { padding: 0 .85rem; }

/* zebra-stripe the data rows for scannability */
.answer-row {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  padding: .22rem 0;
  border-bottom: 1px solid var(--bg3);
  font-family: var(--font-mono);
  font-size: .83rem;
  color: var(--text);
  word-break: break-all;
}
.answer-row:nth-child(even) { background: var(--bg3); }
.answer-row:last-child { border-bottom: none; }

.answer-index {
  color: var(--muted);
  min-width: 1.6rem;
  text-align: right;
  flex-shrink: 0;
  font-size: .7rem;
  padding: .02rem 0;
}

.answer-value { flex: 1; padding: .02rem 0; }

/* error state */
.result-block.has-error .result-block-header { border-left: 3px solid var(--danger); }
.error-msg {
  padding: .5rem .85rem;
  color: var(--danger);
  font-size: .8rem;
  font-family: var(--font-mono);
}

/* no-answer state */
.no-answers {
  padding: .5rem .85rem;
  color: var(--muted);
  font-size: .8rem;
  font-family: var(--font-mono);
  font-style: italic;
}

/* ── Utility ──────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Footer ───────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--text); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 600px) {
  header { padding: 0 1rem; }
  .submit-row { flex-direction: column; }
  button[type="submit"], .btn-secondary { width: 100%; }
}