body {
  margin: 0;
  display: flex;
  background: #111;
  color: white;
  font-family: sans-serif;
  overflow: hidden;
}

/* === КНОПКИ === */
#top-bar {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.button-row {
  display: flex;
  flex-direction: row;
  gap: 8px;
}

#resetBtn,
#toggleTracksBtn {
  background: #2a2a2a;
  color: #fff;
  border: 1px solid #444;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 15px;
  transition: background 0.2s;
}

#resetBtn:hover,
#toggleTracksBtn:hover {
  background: #444;
}

/* === ПОШУК === */
#search-bar {
  display: flex;
  flex-direction: row;
  gap: 6px;
  margin-top: 8px;
}

#search-bar input {
  background: #1c1c1c;
  border: 1px solid #444;
  color: #fff;
  padding: 6px 8px;
  border-radius: 6px;
  width: 110px;
  font-size: 14px;
}

#findBtn {
  background: #333;
  color: #fff;
  border: 1px solid #555;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}
#findBtn:hover { background: #555; }

/* === МАПА === */
#map-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}

#graph {
  width: 100%;
  height: 100vh;
  cursor: grab;
}

/* === ПАНЕЛЬ ТРЕКІВ === */
#info {
  position: fixed;
  top: 110px; /* трохи нижче пошуку */
  left: 10px;
  width: 260px;
  height: calc(100vh - 140px);
  background: #1d1d1d;
  border-radius: 16px;
  padding: 15px;
  overflow-y: auto;
  border: 1px solid #333;
  transform: translateX(-280px);
  transition: transform 0.3s ease;
  z-index: 9;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

#info.visible {
  transform: translateX(0);
}

#info h2 {
  margin-top: 0;
  font-size: 18px;
  text-align: center;
}

/* === ВУЗЛИ === */
.node circle {
  stroke: #000;
  stroke-width: 2px;
}

.node text {
  pointer-events: none;
  font-weight: bold;
  fill: #fff;
  text-shadow: 0 0 5px rgba(0,0,0,0.7);
}

.link {
  stroke-width: 1.5px;
  stroke-opacity: 0.4;
}