/* =============================
   Header Layout
   ============================= */
.svg-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 8, 20, 0.96), rgba(5, 8, 20, 0.78), transparent 100%);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.svg-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  gap: var(--space-4);
}

/* Brand */
.svg-header__brand {
  display: flex;
  align-items: center;
}

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

.svg-header__logo-mark {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 0, #facc15, #b45309 45%, #111827 100%);
  box-shadow: 0 0 0 1px rgba(250, 250, 250, 0.06), 0 12px 30px rgba(0, 0, 0, 0.8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.svg-header__logo-chip {
  width: 60%;
  height: 60%;
  border-radius: 50%;
  border: 2px solid rgba(15, 23, 42, 0.9);
  box-shadow: inset 0 0 0 1px rgba(254, 249, 195, 0.6);
  background: radial-gradient(circle at 50% 20%, #fef9c3 0, #facc15 45%, #78350f 100%);
}

.svg-header__brand-text {
  display: flex;
  flex-direction: column;
}

.svg-header__brand-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.svg-header__brand-tagline {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Navigation */
.svg-header__nav {
  display: flex;
  align-items: center;
}

.svg-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  padding-left: 0;
}

.svg-header__nav-link {
  position: relative;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-100);
  text-decoration: none;
  padding: 0.5rem 0;
}

.svg-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #facc15, #b91c1c);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.svg-header__nav-link:focus-visible::after,
.svg-header__nav-link:hover::after {
  transform: scaleX(1);
}

.svg-header__nav-link--cta {
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(250, 204, 21, 0.9);
  background: radial-gradient(circle at 20% 0, #fefce8, #facc15 45%, #92400e 100%);
  color: #111827 !important;
  box-shadow: 0 10px 28px rgba(250, 204, 21, 0.5);
}

.svg-header__nav-link--cta::after {
  display: none;
}

.svg-header__nav-link--cta:hover {
  transform: translateY(-1px);
}

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

/* Mobile toggle */
.svg-header__toggle {
  display: none;
  cursor: pointer;
  border-radius: var(--radius-pill);
  padding: 0.5rem 0.65rem;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.svg-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.svg-header__toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.28rem;
}

.svg-header__toggle-line {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-100);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Mobile state */
@media (max-width: 768px) {
  .svg-header__toggle {
    display: inline-flex;
  }

  .svg-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 60px;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.98));
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .svg-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6) var(--space-4) var(--space-8);
    gap: var(--space-3);
  }

  .svg-header__nav-link {
    font-size: 0.9rem;
  }

  .svg-header--menu-open .svg-header__nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .svg-header--menu-open .svg-header__toggle-line:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .svg-header--menu-open .svg-header__toggle-line:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }
}

/* Medium screens */
@media (min-width: 769px) {
  .svg-header__nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    background: transparent;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .svg-header__nav,
  .svg-header__toggle-line,
  .svg-header__nav-link::after {
    transition: none !important;
  }
}