/* ============================================================
   ZEM — AGENT CORE HOST · central energy-ring visual system
   Isolated, self-contained. Renders behind cards, above bg.
   ============================================================ */

#agentHost {
  position: fixed;
  left: 50%;
  top: 56%;
  width: min(62vmin, 560px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  z-index: 9;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s ease 0.35s;
}
body.ready #agentHost { opacity: 1; }

.zem-agent-host {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.zem-agent-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.zem-agent-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.9;
}

.zem-agent-z {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 2;
}
.zem-agent-z b {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-weight: 900;
  font-size: clamp(52px, 24vmin, 132px);
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff 0%, #eaf2ff 45%, #9fc4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 18px rgba(0, 213, 255, 0.55))
          drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
}

.zem-agent-cap {
  position: absolute;
  left: 50%;
  bottom: 6%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 8.5px;
  letter-spacing: 2.4px;
  color: var(--txt-2);
  font-family: var(--mono);
  white-space: nowrap;
  z-index: 3;
  transition: color 0.5s ease;
}
.zem-agent-cap .st {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--txt-1);
}
.zem-agent-cap .st i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  transition: background 0.5s ease, box-shadow 0.5s ease;
}
.zem-agent-cap .st b {
  font-weight: 700;
  color: var(--cyan);
  transition: color 0.5s ease;
}

.zem-agent-cap[data-state="listening"] .st { color: #dffbff; }
.zem-agent-cap[data-state="listening"] .st i { background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.zem-agent-cap[data-state="listening"] .st b { color: var(--cyan); }
.zem-agent-cap[data-state="thinking"] .st { color: #efe9ff; }
.zem-agent-cap[data-state="thinking"] .st i { background: var(--purple); box-shadow: 0 0 12px var(--purple); }
.zem-agent-cap[data-state="thinking"] .st b { color: var(--purple); }
.zem-agent-cap[data-state="speaking"] .st { color: #ffd9f0; }
.zem-agent-cap[data-state="speaking"] .st i { background: var(--pink); box-shadow: 0 0 12px var(--pink); animation: pulse-dot 0.7s infinite; }
.zem-agent-cap[data-state="speaking"] .st b { color: var(--pink); }
.zem-agent-cap[data-state="processing"] .st i { background: var(--blue); box-shadow: 0 0 12px var(--blue); }
.zem-agent-cap[data-state="processing"] .st b { color: var(--blue); }
.zem-agent-cap[data-state="success"] .st { color: #d6ffe9; }
.zem-agent-cap[data-state="success"] .st i { background: var(--green); box-shadow: 0 0 12px var(--green); }
.zem-agent-cap[data-state="success"] .st b { color: var(--green); }
.zem-agent-cap[data-state="error"] .st { color: #ffd6dd; }
.zem-agent-cap[data-state="error"] .st i { background: var(--red); box-shadow: 0 0 12px var(--red); animation: pulse-dot 0.5s infinite; }
.zem-agent-cap[data-state="error"] .st b { color: var(--red); }

@media (max-width: 780px) {
  #agentHost { top: 50%; width: min(84vmin, 460px); }
  .zem-agent-z b { font-size: clamp(44px, 26vmin, 100px); }
  .zem-agent-cap { bottom: 3%; }
}