/* Empty State Showcase */
.empty-state {
  flex: 1;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  align-content: center;
  justify-items: center;
  gap: var(--space-4);
  padding: var(--space-7) var(--space-5);
  max-width: 720px;
  margin: 0 auto;
  min-height: min(560px, 70vh);
}

.empty-icon {
  width: 64px;
  height: 64px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  box-shadow: var(--shadow-md);
}

.empty-state h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  text-align: center;
}

.empty-state p {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  line-height: 1.65;
  max-width: 480px;
}

.empty-tip {
  font-size: 11px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
  margin-top: var(--space-2);
  width: 100%;
  text-align: center;
  max-width: 520px;
}

.empty-pipeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-2);
  width: 100%;
  max-width: 640px;
  margin-top: var(--space-2);
}

.empty-pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: var(--space-3) var(--space-2);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  text-align: center;
  line-height: 1.3;
}

.empty-pipeline-step span:first-child {
  font-size: 16px;
}

.empty-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
}

.empty-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.5;
  box-shadow: var(--shadow);
}

.empty-feature-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 5px;
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(79, 70, 229, 0.4);
}

.loading-state {
  flex: 1;
  display: none;
  align-items: stretch;
  justify-content: center;
  padding: var(--space-5);
}

@media (max-width: 600px) {
  .empty-pipeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .empty-features {
    grid-template-columns: 1fr;
  }
}

/* Loading Layout Control */
.loading-shell {
  width: 100%;
  max-width: 1120px;
  display: grid;
  grid-template-columns: 1.618fr 1fr;
  gap: var(--space-4);
  align-items: stretch;
}

.loading-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.loading-hero {
  position: relative;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.loading-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: max-content;
  padding: 5px 10px;
  border: 1px solid rgba(79, 70, 229, 0.2);
  border-radius: 99px;
  background: rgba(79, 70, 229, 0.05);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.loading-kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4);
  animation: pulseGlow 1.8s infinite;
}

.loading-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

.loading-copy {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.loading-meter {
  display: block;
  padding: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* Telemetry Radar Spinner - Hidden in favor of 3D Canvas */
.loading-ring {
  display: none;
}

/* 3D Viewport Panel — 16:9 cinematic ratio */
.loading-3d-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 350px;
  max-height: 600px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.02);
  display: flex;
  align-items: center;
  justify-content: center;
}

#loading3DCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#loading3DCanvas:active {
  cursor: grabbing;
}

.viewport-hud {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.hud-tag {
  color: var(--accent);
  text-transform: uppercase;
}

.hud-coords {
  color: var(--muted);
}

.loading-progress {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.loading-progress-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.loading-step {
  font-size: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.loading-percent {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 12px;
}

.loading-progress-track {
  height: 6px;
  border-radius: 99px;
  overflow: hidden;
  background: var(--surface3);
}

.loading-progress-fill {
  height: 100%;
  width: 6%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--teal), var(--green));
  transition: width 0.4s ease;
}

/* Stopwatch Timer Layout */
.loading-stage-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.loading-stage-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.loading-stage-meta {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.loading-stage-time {
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-end;
  justify-content: center;
  border-left: 1px solid var(--border);
  padding-left: 16px;
  min-width: 90px;
}

.loading-stage-caption {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.loading-stage-elapsed {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

/* Nodes flow chart list */
.loading-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.loading-node {
  padding: 5px 10px;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface2);
  transition: var(--transition);
}

.loading-node.active {
  border-color: var(--accent);
  color: #ffffff;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
  animation: pulseGlow 1.5s infinite;
}

.loading-node.done {
  border-color: var(--green);
  color: var(--green);
  background: rgba(5, 150, 105, 0.05);
}

.loading-node.pending {
  opacity: 0.6;
}

.loading-side {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--surface2);
}

.loading-side-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  padding: 14px;
  box-shadow: var(--shadow);
}

.loading-side-title {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.loading-insight {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.loading-subtext {
  margin-top: 8px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.4;
}

/* Styled Sub-task Agent Terminal Log Feed */
.loading-log {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 200px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  background: #18181b; /* Pitch dark terminal overlay */
  color: #a1a1aa;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
}

.loading-log-item {
  display: flex;
  gap: 8px;
  line-height: 1.4;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.loading-log-item:last-child {
  border-bottom: none;
}

.loading-log-time {
  color: #3b82f6; /* Blue timestamp tag */
  flex-shrink: 0;
}

.loading-log-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.loading-log-title {
  font-weight: 600;
  color: #f4f4f5; /* clean light text */
}

.loading-log-desc {
  color: #71717a; /* grey subtext */
}

/* Session Telemetry Numbers */
.loading-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.loading-stat {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.loading-stat-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin-bottom: 4px;
}

.loading-stat-value {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text);
}

@keyframes pulseGlow {
  0% {
    box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.3);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(79, 70, 229, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
  }
}