header {
  border-bottom: 1px solid var(--border);
  padding: 0 var(--page-padding);
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

.logo-name {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-name span {
  color: var(--accent);
}

.header-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Connected Pipeline Stepper circuit */
.pipeline-crumb {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 99px;
  position: relative;
}

.crumb {
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  position: relative;
  z-index: 2;
}

/* Wires connecting nodes */
.crumb-sep {
  width: 16px;
  height: 2px;
  background: var(--surface3);
  font-size: 0 !important; /* Hide standard '>' character */
  color: transparent !important;
  margin: 0 -1px;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.crumb.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--surface);
  animation: activeStepGlow 1.6s infinite alternate;
}

.crumb.done {
  color: var(--green);
  border-color: rgba(5, 150, 105, 0.3);
  background: rgba(5, 150, 105, 0.03);
}

/* Glowing connections based on pipeline stages */
.crumb.done + .crumb-sep {
  background: linear-gradient(90deg, var(--green) 0%, var(--accent) 100%);
  box-shadow: 0 0 6px rgba(5, 150, 105, 0.3);
}

.crumb.active + .crumb-sep {
  background: linear-gradient(90deg, var(--accent) 0%, var(--surface3) 100%);
}

@keyframes activeStepGlow {
  0% {
    box-shadow: 0 0 4px rgba(79, 70, 229, 0.1);
  }
  100% {
    box-shadow: 0 0 12px rgba(79, 70, 229, 0.4), 0 0 0 4px rgba(79, 70, 229, 0.06);
  }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Pulsing Status Pill */
.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px rgba(5, 150, 105, 0.5);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.95);
  }
}