:root {
  --bg: #f4f7fb;
  --panel: rgba(255, 255, 255, 0.82);
  --cobalt: #1d4ed8;
  --cobalt-light: #3b82f6;
  --text: #0f172a;
  --muted: #64748b;
  --glass: blur(12px);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#canvas-wrap {
  position: fixed;
  inset: 0;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hud {
  position: fixed;
  z-index: 10;
  pointer-events: none;
}

.hud > * {
  pointer-events: auto;
}

.hud-top {
  top: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-start;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(244, 247, 251, 0.95), transparent);
}

.brand h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand p {
  margin: 0.2rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.panel {
  background: var(--panel);
  backdrop-filter: var(--glass);
  border: 1px solid rgba(29, 78, 216, 0.12);
  border-radius: 16px;
  padding: 0.65rem 0.85rem;
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.06);
}

.panel label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.panel input {
  width: min(220px, 50vw);
  padding: 0.35rem 0.5rem;
  border: 1px solid rgba(29, 78, 216, 0.2);
  border-radius: 8px;
  font-size: 0.75rem;
  background: #fff;
}

.panel button {
  margin-top: 0.35rem;
  padding: 0.35rem 0.65rem;
  border: none;
  border-radius: 8px;
  background: var(--cobalt);
  color: #fff;
  font-size: 0.75rem;
  cursor: pointer;
}

.panel button:hover {
  background: var(--cobalt-light);
}

#conn-status {
  font-size: 0.75rem;
  color: var(--cobalt);
}

#conn-status.off {
  color: #dc2626;
}

.hud-agents {
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem;
  pointer-events: none;
}

.agent-card {
  background: var(--panel);
  backdrop-filter: var(--glass);
  border: 1px solid rgba(29, 78, 216, 0.1);
  border-radius: 14px;
  padding: 0.5rem 0.65rem;
  font-size: 0.72rem;
  pointer-events: auto;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.agent-card.working {
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.agent-card .name {
  font-weight: 600;
  color: var(--cobalt);
}

.agent-card .role {
  color: var(--muted);
  font-size: 0.65rem;
}

.agent-card .task {
  margin-top: 0.25rem;
  color: var(--text);
}

.zones-legend {
  position: fixed;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  z-index: 10;
  font-size: 0.65rem;
  color: var(--muted);
  text-align: right;
  line-height: 1.6;
  pointer-events: none;
}