:root {
  --bg-0: #04070f;
  --bg-1: #0d1630;
  --bg-2: #1a2f4d;
  --panel: rgba(9, 16, 32, 0.76);
  --panel-border: rgba(138, 179, 255, 0.22);
  --text: #e9f1ff;
  --text-dim: #a4b8d5;
  --accent-full: #6ca6ff;
  --accent-traveled: #ff8b4a;
  --accent-marker: #ffd36d;
  --accent-earth: #4da3ff;
  --accent-moon: #bfc9d9;
  --ok: #80f2be;
  --warn: #ffd07a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 90% -10%, rgba(95, 123, 180, 0.26), transparent 60%),
    radial-gradient(900px 450px at 10% 0%, rgba(40, 77, 140, 0.28), transparent 62%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1) 50%, var(--bg-2));
}

.app-shell {
  width: min(1200px, 96vw);
  margin: 1.2rem auto 1.4rem;
  display: grid;
  gap: 0.85rem;
}

.info-panel,
.meta-panel,
.timeline-panel,
.legend-panel,
.canvas-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  backdrop-filter: blur(6px);
}

.info-panel {
  padding: 0.95rem 1.1rem;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
}

h1 {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.subtitle {
  margin: 0.45rem 0 0;
  color: var(--text-dim);
  font-size: 0.93rem;
  max-width: 72ch;
  line-height: 1.35;
}

.status-pill {
  margin: 0;
  padding: 0.4rem 0.68rem;
  border-radius: 999px;
  border: 1px solid rgba(128, 242, 190, 0.35);
  background: rgba(66, 151, 116, 0.2);
  color: var(--ok);
  font-size: 0.86rem;
  white-space: nowrap;
}

.status-pill.error {
  border-color: rgba(255, 208, 122, 0.35);
  background: rgba(168, 103, 0, 0.18);
  color: var(--warn);
}

.meta-panel {
  display: grid;
  gap: 0.35rem 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  padding: 0.9rem 1.05rem;
}

.meta-panel p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.3;
}

.meta-panel strong {
  color: #cde0ff;
  font-weight: 600;
}

.meta-panel span,
.meta-panel a {
  color: #f2f6ff;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
}

.meta-panel a {
  text-decoration: none;
  border-bottom: 1px dotted rgba(215, 227, 255, 0.45);
}

.meta-panel a:hover {
  border-bottom-color: rgba(215, 227, 255, 0.95);
}

.timeline-panel {
  padding: 0.78rem 0.98rem 0.84rem;
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 0.62rem;
}

.timeline-head p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.3;
}

.timeline-head strong {
  color: #d8e6ff;
}

#live-button {
  border: 1px solid rgba(130, 177, 255, 0.42);
  background: rgba(71, 115, 190, 0.2);
  color: #d6e6ff;
  border-radius: 999px;
  padding: 0.35rem 0.66rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  cursor: pointer;
}

#live-button:hover:enabled {
  background: rgba(93, 144, 232, 0.28);
}

#live-button:disabled {
  opacity: 0.45;
  cursor: default;
}

#mission-slider {
  width: 100%;
  accent-color: #ff9a61;
  cursor: pointer;
}

#mission-slider:disabled {
  opacity: 0.45;
  cursor: default;
}

.timeline-labels {
  margin-top: 0.58rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.3rem 0.9rem;
}

.timeline-labels span {
  color: #deebff;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
}

.legend-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  padding: 0.75rem 0.95rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #d6e5ff;
  font-size: 0.82rem;
}

.swatch {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  display: inline-block;
}

.swatch.full {
  background: var(--accent-full);
}

.swatch.traveled {
  background: var(--accent-traveled);
}

.swatch.marker {
  background: var(--accent-marker);
}

.swatch.earth {
  background: var(--accent-earth);
}

.swatch.moon {
  background: var(--accent-moon);
}

.canvas-panel {
  padding: 0.45rem;
}

#trajectory-canvas {
  width: 100%;
  height: min(72vh, 740px);
  display: block;
  border-radius: 10px;
  background:
    radial-gradient(circle at 20% 10%, rgba(104, 141, 220, 0.08), transparent 38%),
    linear-gradient(180deg, #060a15 0%, #04070f 100%);
}

@media (max-width: 760px) {
  .app-shell {
    width: 97vw;
    margin-top: 0.8rem;
  }

  .info-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline-head {
    flex-direction: column;
    align-items: flex-start;
  }

  #trajectory-canvas {
    height: min(64vh, 560px);
  }
}