/* Airspace radar, shared by index.html and airspace.html.
   A dark "screen" on the paper page. airspace-radar.js draws the scope and
   plays the story; every base style here is the final frame, so a reader with
   reduced motion, or a page whose script never runs, sees a settled radar. */

.radar {
  --rd-paper: #f2efe5;
  --rd-night: #132027;
  --rd-line: rgba(242, 239, 229, 0.13);
  --rd-faint: rgba(242, 239, 229, 0.5);
  --rd-green: #84d4b9;
  --rd-orange: #f05a2a;
  --rd-warn: #ff9a73;
  --rd-turn: 6s;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 28px;
  color: var(--rd-paper);
  background:
    linear-gradient(rgba(242, 239, 229, 0.025) 1px, transparent 1px),
    var(--rd-night);
  background-size: 100% 40px;
}

.radar-scope {
  position: relative;
  aspect-ratio: 1;
  min-width: 0;
}

.radar-scope svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.rd-ring,
.rd-spoke {
  fill: none;
  stroke: var(--rd-line);
  stroke-width: 1;
}

.rd-ringl,
.rd-folder {
  font-family: var(--mono, monospace);
  fill: var(--rd-faint);
}

.rd-ringl {
  font-size: 10px;
}

.rd-folder {
  font-size: 12px;
  letter-spacing: 0.06em;
}

.rd-hub {
  fill: var(--rd-faint);
}

/* A blip sits in a <g> whose transform places it, so a re-filed plan can
   glide to its new spot. */
.rd-plan {
  transition: transform 1.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.rd-blip {
  fill: var(--rd-green);
  opacity: 0.6;
  transform-box: fill-box;
  transform-origin: center;
  transition: fill 0.5s ease;
}

.rd-plan.warn .rd-blip {
  fill: var(--rd-orange);
}

.rd-ping,
.rd-pair {
  fill: none;
  stroke-width: 1.5;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
}

.rd-ping {
  stroke: var(--rd-green);
}

.rd-pair {
  stroke: var(--rd-orange);
}

.rd-sweep {
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  background: conic-gradient(from 0deg,
    transparent 0deg, transparent 300deg,
    rgba(132, 212, 185, 0.04) 318deg,
    rgba(132, 212, 185, 0.2) 358deg,
    rgba(132, 212, 185, 0.6) 360deg);
}

/* --- the story: only when motion is armed ---------------------------- */

.radar.is-live .rd-sweep {
  opacity: 1;
  animation: rd-spin var(--rd-turn) linear infinite;
}

.radar.is-live .rd-blip {
  animation: rd-flash var(--rd-turn) linear infinite;
  animation-delay: var(--d, 0s);
}

.radar.is-paused .rd-sweep,
.radar.is-paused .rd-blip {
  animation-play-state: paused;
}

.rd-plan.is-new .rd-ping {
  animation: rd-ping 1.2s ease-out 1;
}

.radar .rd-pair.is-on {
  animation: rd-pair 1.4s ease-out 3;
}

.radar.is-arming .rd-plan,
.radar.is-arming .radar-row {
  opacity: 0;
}

.rd-plan,
.radar-row {
  transition: opacity 0.5s ease, transform 1.1s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes rd-spin { to { transform: rotate(360deg); } }
@keyframes rd-flash {
  0% { opacity: 1; transform: scale(1.7); }
  20% { opacity: 0.75; transform: scale(1); }
  100% { opacity: 0.55; transform: scale(1); }
}
@keyframes rd-ping {
  0% { opacity: 0.9; transform: scale(0.4); }
  100% { opacity: 0; transform: scale(2.2); }
}
@keyframes rd-pair {
  0% { opacity: 0.95; transform: scale(0.5); }
  100% { opacity: 0; transform: scale(1.5); }
}

@media (prefers-reduced-motion: reduce) {
  .radar .rd-sweep { animation: none; opacity: 0; }
  .radar .rd-blip { animation: none; }
  .rd-plan, .radar-row { transition: none; }
}

/* --- the side panel -------------------------------------------------- */

.radar-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.radar-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--rd-faint);
  font-family: var(--mono, monospace);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.radar-eyebrow::before {
  width: 18px;
  height: 2px;
  background: var(--rd-orange);
  content: "";
}

.radar-count {
  margin: 0;
  font-size: 2.2rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  line-height: 1;
}

.radar-count span {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--rd-faint);
}

.radar-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rd-line);
}

.radar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 38px;
  border-bottom: 1px solid var(--rd-line);
  font-family: var(--mono, monospace);
  font-size: 0.74rem;
}

.radar-row .rp {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: rgba(242, 239, 229, 0.85);
}

.radar-row .rm {
  display: flex;
  flex: none;
  align-items: center;
  gap: 10px;
  color: var(--rd-faint);
}

.radar-row .rw {
  display: none;
  padding: 1px 6px;
  border: 1px solid var(--rd-orange);
  border-radius: 3px;
  color: var(--rd-warn);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
}

.radar-row.warn .rw {
  display: inline-block;
}

.radar-caption {
  min-height: 3em;
  margin: 0;
  color: var(--rd-paper);
  font-size: 0.95rem;
  line-height: 1.45;
}

.radar-note {
  margin: 0;
  color: var(--rd-faint);
  font-size: 0.78rem;
  line-height: 1.5;
}

@media (max-width: 820px) {
  .radar {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .radar-scope {
    width: 100%;
    max-width: 440px;
    margin-inline: auto;
  }

  /* The scope shrinks with the screen; its labels must stay readable. */
  .rd-folder { font-size: 19px; }
  .rd-ringl { font-size: 15px; }
}

.radar-more {
  align-self: flex-start;
  color: var(--rd-paper);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--rd-orange);
}

.radar-more:hover {
  color: var(--rd-warn);
}