/**
 * Trace Brand Top Nav — structural parity with outer-pulse.html
 * Pill back · optional center status · Homepage · All Traces · Legacy (gold accent)
 * Themes: Vault marble cream glass, Bond deep wood/charcoal
 */

.trace-brand-home-btn {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}
.trace-brand-home-btn:focus-visible {
  outline: 2px solid rgba(212, 175, 95, 0.55);
  outline-offset: 2px;
}

.trace-brand-icon-ring {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  padding: 0;
  flex-shrink: 0;
  transition:
    transform 0.22s ease,
    background 0.22s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease;
  -webkit-tap-highlight-color: transparent;
}

.trace-brand-icon-ring img {
  display: block;
  height: 22px;
  width: auto;
}

.trace-brand-back-pill-marble {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: none;
  transition:
    transform 0.22s ease,
    background 0.22s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.trace-brand-status-pill-marble {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: #3d2f22;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 250, 240, 0.78);
  border: 1px solid rgba(120, 82, 40, 0.38);
  padding: 7px 16px;
  border-radius: 999px;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 2px 10px rgba(60, 40, 15, 0.12);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: min(340px, 46vw);
}

/* ─── Vault capsule / Horizon — translucent cream ribbon on marble ─── */

.trace-brand-top-nav--vault-marble {
  position: relative;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  flex: 0 0 auto;
  padding: clamp(12px, 1vw + 10px, 18px) clamp(16px, 2vw, 36px);
  box-sizing: border-box;
  background: linear-gradient(
    180deg,
    rgba(255, 252, 246, 0.58) 0%,
    rgba(246, 235, 214, 0.44) 100%
  );
  border-bottom: 1px solid rgba(90, 62, 35, 0.22);
  box-shadow:
    0 4px 26px rgba(40, 28, 14, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.trace-brand-top-nav--vault-marble .trace-brand-nav-left,
.trace-brand-top-nav--vault-marble .trace-brand-nav-right {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.trace-brand-top-nav--vault-marble .trace-brand-nav-center {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.trace-brand-top-nav--vault-marble .trace-brand-back-pill-marble {
  background: rgba(255, 248, 230, 0.92);
  border: 1px solid rgba(120, 82, 40, 0.42);
  color: #2e2218;
  padding: 10px 18px 10px 14px;
  box-shadow:
    0 2px 14px rgba(60, 40, 15, 0.16),
    inset 0 1px 0 rgba(255, 240, 210, 0.65);
}

.trace-brand-top-nav--vault-marble .trace-brand-back-pill-marble:hover,
.trace-brand-top-nav--vault-marble .trace-brand-back-pill-marble:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(90, 55, 25, 0.55);
  background: rgba(255, 252, 240, 0.98);
  outline: none;
}

.trace-brand-top-nav--vault-marble .trace-brand-back-pill-marble svg {
  width: 18px;
  height: 18px;
}

.trace-brand-top-nav--vault-marble .trace-brand-icon-ring {
  background: rgba(255, 249, 236, 0.9);
  border: 1px solid rgba(90, 62, 35, 0.35);
  color: #3d2f22;
}

.trace-brand-top-nav--vault-marble .trace-brand-icon-ring:hover,
.trace-brand-top-nav--vault-marble .trace-brand-icon-ring:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(120, 85, 40, 0.55);
  box-shadow: 0 4px 16px rgba(60, 40, 18, 0.18);
  outline: none;
}

/* ─── Bond letter compose fullscreen — smoky glass over wood ─── */

.trace-brand-top-nav--bond-compose {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  flex: 0 0 auto;
  padding: clamp(12px, 1vw + 10px, 16px) clamp(16px, 2vw, 28px);
  box-sizing: border-box;
  background: linear-gradient(
    135deg,
    rgba(18, 12, 8, 0.88) 0%,
    rgba(10, 7, 5, 0.93) 100%
  );
  border-bottom: 1px solid rgba(212, 168, 80, 0.16);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 248, 230, 0.04);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.trace-brand-top-nav--bond-compose .trace-brand-nav-left,
.trace-brand-top-nav--bond-compose .trace-brand-nav-center,
.trace-brand-top-nav--bond-compose .trace-brand-nav-right {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.trace-brand-top-nav--bond-compose .trace-brand-nav-center {
  flex: 1 1 auto;
  justify-content: center;
  min-width: 0;
}

.trace-brand-top-nav--bond-compose .trace-brand-back-pill-marble {
  background: rgba(255, 248, 230, 0.08);
  border: 1px solid rgba(212, 175, 80, 0.26);
  color: rgba(250, 240, 220, 0.95);
  padding: 10px 18px 10px 14px;
  font-family: 'Space Grotesk', sans-serif;
}

.trace-brand-top-nav--bond-compose .trace-brand-back-pill-marble:hover,
.trace-brand-top-nav--bond-compose .trace-brand-back-pill-marble:focus-visible {
  background: rgba(255, 248, 230, 0.14);
  border-color: rgba(230, 200, 120, 0.45);
  transform: translateY(-2px);
  outline: none;
}

.trace-brand-top-nav--bond-compose .trace-brand-icon-ring {
  background: rgba(255, 248, 230, 0.06);
  border: 1px solid rgba(212, 175, 80, 0.22);
  color: rgba(240, 225, 200, 0.88);
}

.trace-brand-top-nav--bond-compose .trace-brand-icon-ring:hover,
.trace-brand-top-nav--bond-compose .trace-brand-icon-ring:focus-visible {
  background: rgba(255, 248, 230, 0.12);
  border-color: rgba(230, 200, 120, 0.45);
  color: #fff8e8;
  transform: translateY(-2px);
  outline: none;
}

/* ─── bond-interface.html sticky bar — charcoal & brass over wood ─── */

.bond-top-nav {
  padding: clamp(12px, 0.95rem + 2px, 18px) clamp(16px, 2vw, 32px);
  background: linear-gradient(
    135deg,
    rgba(22, 16, 12, 0.96),
    rgba(12, 9, 7, 0.98)
  );
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(212, 168, 80, 0.2);
  box-shadow:
    0 5px 26px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 248, 230, 0.04);
}

.bond-top-nav .back-btn {
  background: rgba(255, 248, 230, 0.08);
  color: rgba(248, 236, 210, 0.95);
  border: 1px solid rgba(212, 175, 80, 0.24);
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.82rem;
  font-family: 'Space Grotesk', sans-serif;
}

.bond-top-nav .back-btn:hover {
  background: rgba(255, 248, 230, 0.14);
  color: #fffef8;
  border-color: rgba(228, 198, 120, 0.45);
  transform: translateY(-2px);
}

.bond-top-nav .nav-icon-btn {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255, 248, 230, 0.06);
  border: 1px solid rgba(212, 175, 80, 0.2);
  color: rgba(235, 220, 195, 0.88);
}

.bond-top-nav .nav-icon-btn:hover {
  background: rgba(255, 248, 230, 0.13);
  color: rgba(255, 250, 235, 0.98);
  border-color: rgba(228, 198, 120, 0.42);
  transform: translateY(-2px);
}

@media (max-width: 480px) {
  .bond-top-nav .back-btn {
    padding: 8px 14px;
    font-size: 0.76rem;
  }
}

@media (max-width: 620px) {
  .trace-brand-top-nav--vault-marble .trace-brand-status-pill-marble {
    font-size: 0.62rem;
    padding: 6px 10px;
    letter-spacing: 0.06em;
    max-width: 38vw;
  }
}

@media (max-width: 400px) {
  .bond-top-nav .nav-right {
    gap: 6px;
  }
  .bond-top-nav .nav-icon-btn {
    width: 40px;
    height: 40px;
  }
}