/* Palette: Wood (greens) carries the page, Fire (amber, vermilion) is the light.
   No black, navy or silver. */
:root {
  --paper: #ffffff;
  --paper-2: #efe6d0;
  --ink: #26331f;
  --ink-soft: #5a6650;
  --forest: #1f4d33;
  --jade: #3f7d58;
  --moss: #9bb27a;
  --lantern: #e8962e;
  --ember: #c8452c;
  --line: #e2e8e4;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  margin: 0;
  font: 17px/1.55 var(--sans);
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

a { color: var(--forest); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 24px;
}
.brand { display: flex; }
.brand img { height: 40px; width: auto; }
.topbar nav { display: flex; gap: 24px; }
.topbar nav a { color: var(--ink-soft); text-decoration: none; font-size: 15px; }
.topbar nav a:hover { color: var(--ember); }

main { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0 64px;
}
.eyebrow {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ember);
}
h1, h2, h3 { font-family: var(--serif); color: var(--forest); }
h1 { font-size: clamp(36px, 5vw, 56px); line-height: 1.08; margin: 0 0 18px; font-weight: 600; }
.lede { font-size: 19px; color: var(--ink-soft); max-width: 34em; margin: 0 0 28px; }

.ip-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--lantern);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: 0 10px 30px -18px rgba(31, 77, 51, .45);
  max-width: 520px;
}
.label { font-size: 13px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .1em; }
.ip-row { display: flex; align-items: center; gap: 14px; margin: 6px 0 4px; }
.ip {
  font: 600 clamp(22px, 5.6vw, 38px) var(--mono);
  color: var(--forest);
  overflow-wrap: anywhere;
}
.sub { margin: 0; color: var(--ink-soft); }

button {
  font: 600 15px var(--sans);
  border: 0;
  border-radius: 10px;
  padding: 12px 22px;
  background: var(--ember);
  color: #fff;
  cursor: pointer;
}
button:hover { background: #b23a24; }
button.ghost {
  background: transparent;
  color: var(--forest);
  border: 1px solid var(--line);
  padding: 6px 12px;
  font-size: 13px;
}
button.ghost:hover { border-color: var(--jade); background: #eef5f1; }
button:disabled { opacity: .5; cursor: default; }

/* Radar */
.radar { margin: 0; justify-self: center; width: min(420px, 100%); }
.radar svg { width: 100%; height: auto; display: block; }
.ring { fill: none; stroke: var(--moss); stroke-width: 1; opacity: .7; }
.ring.outer { stroke: var(--jade); stroke-width: 2; fill: #f4f8f5; opacity: 1; }
.spokes line { stroke: var(--moss); stroke-width: 1; opacity: .45; }
.spokes line.major { stroke: var(--jade); opacity: .8; stroke-width: 2; }
.branches text { font: 15px var(--serif); fill: var(--jade); opacity: .55; text-anchor: middle; dominant-baseline: central; }
.beam { fill: var(--lantern); opacity: .28; }
.sweep { transform-origin: 200px 200px; animation: sweep 6s linear infinite; }
.core { fill: var(--forest); }
.blip-dot { fill: var(--ember); }
.blip-halo { fill: var(--ember); opacity: .25; transform-box: fill-box; transform-origin: center; animation: pulse 2.2s ease-out infinite; }
@keyframes sweep { to { transform: rotate(360deg); } }
@keyframes pulse { from { transform: scale(.4); opacity: .5; } to { transform: scale(1.6); opacity: 0; } }

/* Panels */
.panel {
  border-top: 1px solid var(--line);
  padding: 56px 0;
}
.panel-head { max-width: 640px; margin-bottom: 28px; }
.panel-head h2 { font-size: 32px; margin: 0 0 8px; font-weight: 600; }
.panel-head p { margin: 0; color: var(--ink-soft); }

.signals {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.signals li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  border-top: 4px solid var(--moss);
}
.signals li.good { border-top-color: var(--jade); }
.signals li.warn { border-top-color: var(--ember); }
.signals h3 { margin: 0 0 8px; font-size: 18px; }
.signals .value { margin: 0 0 8px; font-weight: 600; overflow-wrap: anywhere; }
.signals li.warn .value { color: var(--ember); }
.signals .note { margin: 0; font-size: 14px; color: var(--ink-soft); }

/* Lookup */
.lookup { display: flex; gap: 12px; max-width: 620px; }
.lookup input {
  flex: 1;
  min-width: 0;
  font: 17px var(--mono);
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink);
}
.lookup input:focus { outline: 2px solid var(--lantern); outline-offset: 1px; }
.result {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 24px;
  max-width: 620px;
  margin: 24px 0 0;
  padding: 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.result dt { color: var(--ink-soft); }
.result dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.error { color: var(--ember); margin: 16px 0 0; }

/* API */
.tag {
  font: 600 12px var(--sans);
  text-transform: uppercase;
  letter-spacing: .1em;
  background: var(--lantern);
  color: #3b2508;
  border-radius: 99px;
  padding: 4px 10px;
  vertical-align: middle;
}
.api-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: start; }
.code {
  margin: 0;
  background: var(--forest);
  color: #eef5f1;
  border-radius: 14px;
  padding: 22px;
  font: 14px/1.6 var(--mono);
  overflow-x: auto;
}
.code .c { color: var(--moss); }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.ticks li { padding-left: 30px; position: relative; color: var(--ink-soft); }
.ticks li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--lantern);
  box-shadow: 0 0 0 4px #f8dfb0;
}
.ticks strong { color: var(--forest); }

.foot {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 48px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}
.foot p { margin: 0 0 6px; }
.foot .fine { font-size: 13px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 900px) {
  .hero, .api-grid { grid-template-columns: 1fr; }
  .radar { width: min(280px, 70%); }
  .signals { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .topbar nav { gap: 14px; }
  .signals { grid-template-columns: 1fr; }
  .lookup { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  .sweep, .blip-halo { animation: none; }
}