/* ── 외부 패널 ── */
#radar-panel {
  position: relative;
  width: min(660px, 100%);
  margin: 2.5rem auto 1rem;
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(168, 212, 240, 0.5);
  border-radius: 14px;
  box-shadow:
    0 4px 20px rgba(100, 160, 220, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* ── 헤더 바 ── */
.radar-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px 9px;
  border-bottom: 1px solid rgba(168, 212, 240, 0.35);
}

.radar-panel__title {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: #2e6fa3;
}

.radar-panel__status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: #3a9e6e;
}

.radar-panel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 5px rgba(74, 222, 128, 0.6);
  animation: status-blink 2.4s ease-in-out infinite;
}

@keyframes status-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

/* ── 레이더 영역 ── */
#radar-wrap {
  display: flex;
  justify-content: center;
  padding: 18px 20px 14px;
}

#radar-container {
  position: relative;
  width: min(520px, 100%);
  aspect-ratio: 1;
}

/* 코너 브래킷 */
#radar-container::before,
#radar-container::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: rgba(80, 140, 200, 0.35);
  border-style: solid;
  z-index: 5;
  pointer-events: none;
}

#radar-container::before {
  top: 4px;
  left: 4px;
  border-width: 1.5px 0 0 1.5px;
}

#radar-container::after {
  bottom: 4px;
  right: 4px;
  border-width: 0 1.5px 1.5px 0;
}

#radar-canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(220, 238, 252, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(168, 212, 240, 0.5);
  box-shadow:
    0 4px 20px rgba(100, 160, 220, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  cursor: crosshair;
}

/* ── 푸터 바 ── */
.radar-panel__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px 10px;
  border-top: 1px solid rgba(168, 212, 240, 0.35);
}

.radar-panel__footer span {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: #5a8fb0;
}

/* ── 툴팁 ── */
#radar-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(168, 212, 240, 0.6);
  border-radius: 6px;
  padding: 5px 10px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.65rem;
  color: #1a3a5c;
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(100, 160, 220, 0.12);
  display: none;
  z-index: 10;
  transform: translateY(-50%);
}