:root {
  --bg: #070b1a;
  --panel: #101a33;
  --line: #2e467a;
  --text: #e6efff;
  --muted: #a9badf;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, #15305f 0%, transparent 35%),
    radial-gradient(circle at 90% 80%, #2e1c48 0%, transparent 35%),
    linear-gradient(130deg, #040712, #0d152b 65%, #0b1224);
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 100vh;
}

.panel {
  background: rgba(10, 18, 36, 0.86);
  border-right: 1px solid var(--line);
  padding: 16px;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.55rem;
}

h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.muted {
  color: var(--muted);
  margin: 0 0 12px;
}

.group {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(20, 34, 67, 0.7);
  padding: 10px;
  margin-bottom: 12px;
}

.group p {
  margin: 6px 0;
  font-size: 0.9rem;
}

#boost-indicator {
  border: 2px solid #4763a0;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.1s ease;
}

#boost-indicator.boost-inactive {
  background: rgba(40, 50, 90, 0.8);
  color: #a9badf;
  border-color: #4763a0;
}

#boost-indicator.boost-active {
  background: #22cc00;
  color: #000;
  border-color: #00ff00;
  box-shadow: 0 0 12px #22cc00;
}

#instructions-box {
  border: 2px solid #4763a0;
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  text-align: center;
  font-weight: 600;
  transition: all 0.2s ease;
}

#instructions-box.instructions-ok {
  background: rgba(34, 140, 100, 0.8);
  color: #00ff99;
  border-color: #00ff99;
}

#instructions-box.instructions-warning {
  background: rgba(255, 140, 0, 0.9);
  color: #000;
  border-color: #ffaa00;
  box-shadow: 0 0 10px rgba(255, 140, 0, 0.8);
  animation: pulse-warning 0.8s infinite;
}

@keyframes pulse-warning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.actions {
  display: grid;
  gap: 8px;
}

button {
  width: 100%;
  padding: 10px;
  border: 1px solid #4763a0;
  border-radius: 8px;
  background: #1a2f5d;
  color: #ecf3ff;
  cursor: pointer;
}

button:hover {
  background: #24427f;
}

#canvas-holder {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: hidden;
}

#canvas-holder canvas {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 24px);
  height: auto !important;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .panel {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  #canvas-holder canvas {
    max-height: calc(100vh - 280px);
  }
}