:root {
  color-scheme: dark;
  --bg: #08131a;
  --panel: #0e1b24;
  --border: #27414e;
  --text: #eaf1f6;
  --muted: #94a9b4;
  --accent: #63e6be;
  --accent-dark: #0b493d;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: linear-gradient(180deg, #0f2430, #0a171f);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand strong { font-size: 1.05rem; letter-spacing: 0.02em; }
#statusLine { color: var(--muted); font-size: 0.85rem; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

button {
  min-height: 2.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 0.55rem;
  border: 1px solid #3a5663;
  background: #1b303b;
  color: var(--text);
  font: inherit;
}

button.primary {
  background: var(--accent);
  color: #06241e;
  border-color: var(--accent);
  font-weight: 700;
}

button:disabled { opacity: 0.45; }

main {
  flex: 1;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 0;
}

#map {
  width: 100%;
  min-height: 55vh;
  height: 100%;
  background: #102028;
}

.panel {
  max-height: 32vh;
  overflow: auto;
  padding: 0.75rem 1rem 1.25rem;
  background: var(--panel);
  border-top: 1px solid var(--border);
}

.panel h2 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

#targetList {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.9rem;
}

#targetList li { margin: 0.25rem 0; }

.hint {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (min-width: 900px) {
  main {
    grid-template-columns: 1fr 20rem;
    grid-template-rows: 1fr;
  }
  .panel {
    max-height: none;
    border-top: none;
    border-left: 1px solid var(--border);
  }
}