:root {
  --bg: #0a0a0a;
  --bg-elev: #131313;
  --fg: #c8c8c8;
  --dim: #6a6a6a;
  --border: #1e1e1e;
  --mint: #00ff9d;
  --warn: #ffb200;
  --danger: #ff3d5a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, Consolas, ui-monospace, monospace;
  font-size: 14px; line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; }

main { max-width: 820px; margin: 40px auto 60px; padding: 0 20px; }

header h1 {
  font-size: 22px; font-weight: 500; margin: 0 0 4px; letter-spacing: 0.02em;
}
.mint { color: var(--mint); }
.dim  { color: var(--dim); }
.tagline {
  color: var(--dim); font-size: 12px; margin: 0 0 28px; letter-spacing: 0.04em;
}

.form-block {
  border: 1px solid var(--border); background: var(--bg-elev);
  padding: 14px 16px; margin-bottom: 22px;
}
form { display: flex; gap: 10px; }
input[type="text"] {
  flex: 1;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--fg); padding: 10px 12px;
  font-family: inherit; font-size: 14px; outline: none;
}
input[type="text"]:focus { border-color: var(--mint); }
select {
  background: var(--bg); border: 1px solid var(--border);
  color: var(--fg); padding: 10px 10px;
  font-family: inherit; font-size: 13px; outline: none;
}
select:focus { border-color: var(--mint); }
button {
  background: var(--mint); color: #000; border: none;
  padding: 10px 22px; font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; text-transform: lowercase;
}
button:disabled { background: var(--border); color: var(--dim); cursor: wait; }

.status {
  margin-top: 10px; padding: 8px 12px; font-size: 12px;
  background: var(--bg); border: 1px solid var(--border); color: var(--dim);
}
.status.error { color: var(--danger); border-color: var(--danger); }

.result { display: block; }
.block {
  border: 1px solid var(--border); background: var(--bg-elev);
  margin-bottom: 18px; padding: 14px 16px;
}
.block h2 {
  font-size: 12px; font-weight: 500; margin: 0 0 10px;
  color: var(--dim); letter-spacing: 0.1em; text-transform: uppercase;
}
.kv { display: grid; grid-template-columns: 180px 1fr; row-gap: 4px; column-gap: 12px; }
.kv .k { color: var(--dim); }
.kv .v { color: var(--fg); word-break: break-word; }

table.prefixes { width: 100%; border-collapse: collapse; font-size: 13px; }
table.prefixes th, table.prefixes td {
  text-align: left; padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
table.prefixes th { color: var(--dim); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }

.sub-section-title {
  margin: 14px 0 4px; font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
}

.note-error { color: var(--danger); margin: 4px 0; font-size: 13px; }
.note-warn  { color: var(--warn, #d4a657); margin: 4px 0; font-size: 13px; }

.badge {
  display: inline-block; padding: 2px 8px; font-size: 11px;
  border: 1px solid var(--border); border-radius: 2px;
  letter-spacing: 0.06em; text-transform: lowercase;
}
.badge.valid    { color: var(--mint);   border-color: var(--mint); }
.badge.invalid  { color: var(--danger); border-color: var(--danger); }
.badge.notfound,
.badge.unknown  { color: var(--dim);    border-color: var(--border); }
.badge.error    { color: var(--warn);   border-color: var(--warn); }

footer {
  margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--border);
  font-size: 11px; letter-spacing: 0.04em;
}
.footer-line { margin-bottom: 4px; }

/* --- section headers (ipintel pattern) --- */
.section-header {
  color: var(--dim);
  margin: 18px 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.section-header:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.ip-line {
  margin: 4px 0 12px;
  font-size: 15px;
}
.ip-line code {
  color: var(--mint);
  font-weight: 600;
}

.meta {
  margin-top: 22px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 11px;
  letter-spacing: 0.04em;
}

/* --- proof-of-work tile (ipintel pattern) --- */
.pow-tile {
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.pow-head {
  font-size: 12px;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.pow-tag {
  color: var(--mint);
  text-transform: uppercase;
}
.pow-sub { color: var(--dim); }
.pow-bar {
  font-size: 15px;
  letter-spacing: 0;
  line-height: 1.1;
  color: var(--mint);
  white-space: nowrap;
  overflow: hidden;
  text-shadow: 0 0 8px rgba(0, 255, 157, 0.35);
  margin-bottom: 8px;
}
.pow-stats {
  color: var(--fg);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.pow-hint {
  color: var(--dim);
  font-size: 11px;
  margin-top: 6px;
  font-style: italic;
}

@media (max-width: 520px) {
  .pow-bar { font-size: 13px; }
}

/* --- tabs ---------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.tab {
  background: transparent;
  color: var(--dim);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 20px;
  margin-bottom: -1px;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
}
.tab:hover { color: var(--fg); }
.tab.active {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* --- forms (expanded layout) --------------------------------------------- */
form { display: flex; flex-direction: column; gap: 10px; }
.form-row { display: flex; gap: 10px; align-items: center; }
.form-row-split {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}
.chk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--dim);
  font-size: 12px;
  letter-spacing: 0.04em;
  cursor: pointer;
  padding: 4px 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  user-select: none;
}
.chk:has(input:checked) { color: var(--mint); border-color: var(--mint); }
.chk input {
  appearance: none;
  width: 10px;
  height: 10px;
  border: 1px solid var(--dim);
  background: var(--bg);
  margin: 0;
}
.chk input:checked {
  background: var(--mint);
  border-color: var(--mint);
}

textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  outline: none;
  resize: vertical;
  min-height: 180px;
}
textarea:focus { border-color: var(--mint); }
textarea::placeholder { color: var(--dim); }

.verify-hint { flex: 1; font-size: 11px; letter-spacing: 0.04em; }

/* --- security posture / summary strip ------------------------------------ */
.posture {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-bottom: 18px;
  background: var(--border);
  border: 1px solid var(--border);
}
.posture-cell {
  background: var(--bg-elev);
  padding: 10px 12px;
}
.posture-label {
  color: var(--dim);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.posture-value {
  font-size: 13px;
  letter-spacing: 0.04em;
}
.posture-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: middle;
  background: var(--dim);
}
.posture-dot.good { background: var(--mint); box-shadow: 0 0 6px rgba(0, 255, 157, 0.5); }
.posture-dot.warn { background: var(--warn); box-shadow: 0 0 6px rgba(255, 178, 0, 0.4); }
.posture-dot.bad  { background: var(--danger); box-shadow: 0 0 6px rgba(255, 61, 90, 0.4); }
.posture-dot.off  { background: #333; }

/* --- verify-mode render -------------------------------------------------- */
.verify-summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  margin-bottom: 14px;
}
.verify-summary .big {
  font-size: 20px;
  letter-spacing: 0.04em;
}
.verify-summary .big.pass { color: var(--mint); }
.verify-summary .big.fail { color: var(--danger); }
.verify-summary .big.none { color: var(--dim); }

.sig-card {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.sig-card-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.sig-card-head .idx {
  color: var(--dim);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sig-card-head .sig-domain code { color: var(--mint); font-size: 15px; }

.verdict-row { display: flex; gap: 20px; flex-wrap: wrap; margin: 8px 0; }
.verdict-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.04em;
}
.verdict-item .lbl { color: var(--dim); }
.verdict-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
}
.verdict-dot.good { background: var(--mint); }
.verdict-dot.bad  { background: var(--danger); }

.sig-detail {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* --- probe hits ---------------------------------------------------------- */
.probe-summary {
  font-size: 12px;
  color: var(--dim);
  margin: 4px 0 8px;
  letter-spacing: 0.04em;
}
.probe-hits {
  color: var(--mint);
  font-weight: 500;
}
.probe-misses {
  color: var(--dim);
  font-size: 10px;
  margin-top: 6px;
  font-family: inherit;
  letter-spacing: 0.02em;
}

/* --- key:value tightening ------------------------------------------------ */
.kv.compact { grid-template-columns: 150px 1fr; row-gap: 2px; font-size: 13px; }
.kv .v code { color: var(--mint); word-break: break-all; }

@media (max-width: 520px) {
  .kv, .kv.compact { grid-template-columns: 1fr; }
  .kv .k { padding-top: 6px; }
  .form-row-split { grid-template-columns: 1fr; }
  .form-row { flex-wrap: wrap; }
  .posture { grid-template-columns: repeat(2, 1fr); }
}