/* ============================================
   SETUP HEADER — "status strip" signature
   A single instrument-panel bar: brand + live
   status, signal-path nav, mono call readout.
   ============================================ */

.sh-strip {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: padding 0.25s ease, box-shadow 0.25s ease;
}

.sh-strip[data-scrolled="true"] {
  box-shadow: 0 8px 28px rgba(6, 16, 42, 0.35);
}

.sh-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 76px;
  transition: height 0.25s ease;
}

.sh-strip[data-scrolled="true"] .sh-strip-inner {
  height: 62px;
}

/* BRAND */
.sh-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}

.sh-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--signal) 0%, var(--cyan) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
}

.sh-brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}

.sh-brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--white);
  letter-spacing: -0.02em;
}

.sh-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.sh-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.22);
  animation: sh-pulse 2.2s ease-in-out infinite;
}

@keyframes sh-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* NAV — signal path */
.sh-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  flex: 1;
  justify-content: center;
}

.sh-nav-link {
  position: relative;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.62);
  padding: 8px 0;
  transition: color 0.18s ease;
}

.sh-nav-link::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -2px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--signal-bright);
  opacity: 0;
  transform: translateX(-50%) scale(0.4);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.sh-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, var(--signal-bright), var(--cyan));
  transition: width 0.22s ease;
}

.sh-nav-link:hover {
  color: var(--white);
}

.sh-nav-link:hover::after {
  width: 100%;
}

.sh-nav-link:hover::before {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ACTIONS */
.sh-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.sh-readout {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.18s ease, background 0.18s ease;
  line-height: 1.15;
}

.sh-readout:hover {
  border-color: var(--signal-bright);
  background: rgba(59, 130, 246, 0.1);
}

.sh-readout-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
}

.sh-readout-value {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
}

.sh-node {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
  flex-shrink: 0;
}

.sh-node:hover {
  border-color: var(--signal-bright);
  color: var(--white);
  background: rgba(59, 130, 246, 0.12);
}

.sh-node-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sh-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  padding: 4px;
}

/* MOBILE NAV */
.sh-mobile-nav {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--ink);
  max-height: 0;
  opacity: 0;
  transition: max-height 0.22s ease, opacity 0.22s ease;
}

.sh-mobile-nav.open {
  max-height: 400px;
  opacity: 1;
}

.sh-mobile-link {
  padding: 15px 28px;
  font-weight: 600;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s ease, color 0.15s ease;
}

.sh-mobile-link:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--white);
}

.sh-mobile-phone {
  color: var(--signal-bright);
  font-family: var(--font-mono);
}

/* FLOATING CALL NODE */
.sh-float-call {
  position: fixed;
  bottom: 26px;
  left: 26px;
  z-index: 90;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--signal) 0%, var(--signal-bright) 100%);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(26, 86, 219, 0.45);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sh-float-call:hover {
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 12px 30px rgba(26, 86, 219, 0.55);
}

.sh-float-ping {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid var(--signal-bright);
  animation: sh-ping 2.4s ease-out infinite;
}

@keyframes sh-ping {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.55); opacity: 0; }
}

/* FLOATING CHAT NODE */
.sh-chat-wrap {
  position: fixed;
  bottom: 26px;
  right: 26px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.sh-chat-toggle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--signal-bright);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(6, 16, 42, 0.35);
  transition: transform 0.2s ease, background 0.2s ease;
}

.sh-chat-toggle:hover {
  transform: translateY(-3px) scale(1.06);
  background: var(--signal);
}

.sh-chat-bubble {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  box-shadow: var(--shadow-card-hover);
  max-width: 220px;
  display: none;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  transform: translateY(10px) scale(0.96);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.sh-chat-bubble.show {
  display: flex;
  opacity: 1;
  transform: translateY(0) scale(1);
}

.sh-chat-bubble strong {
  font-size: 0.9rem;
  color: var(--ink);
}

.sh-chat-bubble span {
  font-size: 0.83rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

/* RESPONSIVE */
@media (max-width: 940px) {
  .sh-nav,
  .sh-readout {
    display: none;
  }
  .sh-toggle {
    display: flex;
  }
}

@media (max-width: 560px) {
  .sh-status {
    display: none;
  }
  .sh-strip-inner {
    height: 64px;
  }
}