.sv-header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.sv-header__inner {
  gap: var(--space-4);
}

.sv-header__brand {
  display: flex;
  align-items: center;
}

.sv-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.sv-header__logo-mark {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #ffb347, #ff4b6e 55%, #050814 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
}

.sv-header__logo-chip {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  border: 2px solid rgba(5, 8, 20, 0.9);
}

.sv-header__logo-chip--red {
  background: #ff4b6e;
  top: 6px;
  left: 7px;
}

.sv-header__logo-chip--gold {
  background: #f8c14f;
  bottom: 5px;
  right: 6px;
}

.sv-header__logo-text {
  display: flex;
  flex-direction: column;
}

.sv-header__logo-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sv-header__logo-subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

/* Nav layout */
.sv-header__nav {
  margin-left: auto;
}

.sv-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.sv-header__nav-item a {
  font-size: var(--font-size-sm);
}

.sv-header__nav-item--cta {
  margin-left: var(--space-2);
}

.sv-header__cta {
  padding-inline: var(--space-4);
  font-size: 0.75rem;
}

/* Mobile toggle */
.sv-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(15, 23, 42, 0.92);
  color: var(--color-text);
  cursor: pointer;
}

.sv-header__toggle-inner {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.sv-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.sv-header__toggle-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* Toggle active state */
.sv-header__toggle[aria-expanded="true"] .sv-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.sv-header__toggle[aria-expanded="true"] .sv-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.sv-header__toggle[aria-expanded="true"] .sv-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive behaviour */
@media (max-width: 768px) {
  .sv-header__toggle {
    display: inline-flex;
  }

  .sv-header__nav {
    position: fixed;
    inset: 56px 0 auto;
    background: rgba(5, 8, 20, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.16);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility 0s linear var(--transition-normal);
  }

  .sv-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4);
    gap: var(--space-3);
  }

  .sv-header__nav-item--cta {
    width: 100%;
  }

  .sv-header__nav-item--cta .button {
    width: 100%;
    justify-content: center;
  }

  .sv-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }
}

@media (min-width: 769px) {
  .sv-header__nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}