/* Spellino Header Styles */

.sp-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(20px);
  background:
    linear-gradient(180deg, rgba(5, 6, 10, 0.96), rgba(5, 6, 10, 0.88) 65%, rgba(5, 6, 10, 0));
  border-bottom: 1px solid rgba(37, 41, 58, 0.9);
}

.sp-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

/* Brand */

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

.sp-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  text-decoration: none;
}

.sp-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-lg);
  background: conic-gradient(from 180deg, var(--color-primary), var(--color-accent), #0ea5e9, var(--color-primary));
  box-shadow: var(--shadow-glow-primary);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #000;
}

.sp-header__logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
}

/* Desktop navigation */

.sp-header__nav {
  display: flex;
  align-items: center;
}

.sp-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.sp-header__nav-item {
  position: relative;
}

.sp-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.sp-header__nav-link::after {
  display: none;
}

.sp-header__nav-link:hover {
  color: var(--color-text);
  text-shadow: 0 0 14px rgba(62, 243, 255, 0.7);
  background: radial-gradient(circle at 0 0, rgba(62, 243, 255, 0.15), transparent 55%);
}

.sp-header__nav-link:focus-visible {
  outline: 2px solid transparent;
  box-shadow:
    0 0 0 1px #000,
    0 0 0 3px var(--color-primary);
}

/* Highlighted Search CTA */

.sp-header__nav-item--highlight .sp-header__nav-link {
  padding-inline: 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(62, 243, 255, 0.6);
  background: radial-gradient(circle at 0 0, rgba(62, 243, 255, 0.24), transparent 55%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.75));
  color: var(--gray-50);
}

.sp-header__nav-link--cta:hover {
  box-shadow: var(--shadow-glow-primary);
}

.sp-header__nav-link-icon {
  font-size: 0.85rem;
  color: var(--color-primary);
}

/* Mobile toggle */

.sp-header__toggle {
  position: relative;
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: radial-gradient(circle at 0 0, rgba(62, 243, 255, 0.16), transparent 55%),
    rgba(15, 23, 42, 0.96);
}

.sp-header__toggle:focus-visible {
  outline: 2px solid transparent;
  box-shadow:
    0 0 0 1px #000,
    0 0 0 3px var(--color-primary);
}

.sp-header__toggle-bar {
  position: absolute;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.sp-header__toggle-bar:nth-child(1) {
  top: 0.8rem;
}

.sp-header__toggle-bar:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.sp-header__toggle-bar:nth-child(3) {
  bottom: 0.8rem;
}

.sp-header__toggle[aria-expanded="true"] .sp-header__toggle-bar:nth-child(1) {
  top: 1.15rem;
  transform: rotate(45deg);
}

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

.sp-header__toggle[aria-expanded="true"] .sp-header__toggle-bar:nth-child(3) {
  bottom: 1.15rem;
  transform: rotate(-45deg);
}

/* Mobile navigation layout */

@media (max-width: 768px) {
  .sp-header__toggle {
    display: inline-flex;
  }

  .sp-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at 0 0, rgba(62, 243, 255, 0.18), transparent 55%),
      linear-gradient(180deg, rgba(5, 6, 10, 0.98), rgba(5, 6, 10, 0.96));
    border-bottom: 1px solid rgba(37, 41, 58, 0.9);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .sp-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12) var(--space-16) var(--space-16);
    gap: var(--space-4);
  }

  .sp-header__nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 0.55rem 0.7rem;
    border-radius: var(--radius-md);
  }

  .sp-header__nav-item--highlight .sp-header__nav-link {
    width: 100%;
    justify-content: center;
    margin-top: var(--space-6);
  }

  .sp-header__nav--open {
    transform: scaleY(1);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

@media (min-width: 769px) {
  .sp-header__nav {
    position: static;
  }
}