/* Header styles for Drive Aura */

.da-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(to bottom, rgba(7, 10, 13, 0.96), rgba(7, 10, 13, 0.9));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
}

.da-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

/* Brand */

.da-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.da-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  color: var(--color-text);
}

.da-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: conic-gradient(from 210deg, #0f8ce8, #0b6bb3, #0f8ce8);
  box-shadow: 0 0 0 2px rgba(15, 140, 232, 0.5), 0 10px 30px rgba(0, 0, 0, 0.8);
  position: relative;
}

.da-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.4), transparent 55%),
    radial-gradient(circle at 70% 80%, rgba(15, 23, 42, 0.95), #020617);
}

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

.da-header__logo-main {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-md);
}

.da-header__logo-main span {
  color: var(--color-primary);
}

.da-header__logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Nav */

.da-header__nav {
  flex: 1;
}

.da-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
}

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

.da-header__nav-link {
  position: relative;
  padding: 0.35rem 0.1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.13em;
}

.da-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base);
}

.da-header__nav-link:hover,
.da-header__nav-link:focus-visible {
  color: var(--color-text);
}

.da-header__nav-link:hover::after,
.da-header__nav-link:focus-visible::after {
  width: 100%;
}

.da-header__nav-item--highlight .da-header__nav-link--cta {
  padding-inline: 0.9rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(15, 140, 232, 0.7);
  background: radial-gradient(circle at top left, rgba(15, 140, 232, 0.22), transparent 55%),
    rgba(15, 23, 42, 0.9);
  box-shadow: 0 10px 30px rgba(15, 140, 232, 0.25);
  color: var(--color-text);
}

.da-header__nav-item--highlight .da-header__nav-link--cta::after {
  display: none;
}

.da-header__nav-item--highlight .da-header__nav-link--cta:hover,
.da-header__nav-item--highlight .da-header__nav-link--cta:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 14px 38px rgba(15, 140, 232, 0.4);
}

/* Actions */

.da-header__actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
}

.da-header__icon-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--color-text-muted);
  background: radial-gradient(circle at 30% 0, rgba(148, 163, 184, 0.2), transparent 55%),
    rgba(15, 23, 42, 0.95);
}

.da-header__icon-link:hover,
.da-header__icon-link:focus-visible {
  color: var(--color-text);
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(15, 140, 232, 0.45);
}

.da-header__cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 3px;
  border-radius: 999px;
  background: var(--color-danger);
  color: #fff;
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Toggle (mobile) */

.da-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.96);
}

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

.da-header__toggle:focus-visible {
  outline-offset: 3px;
}

.da-header__toggle--open .da-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.da-header__toggle--open .da-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.da-header__toggle--open .da-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 900px) {
  .da-header__inner {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .da-header__toggle {
    display: inline-flex;
  }

  .da-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    padding-inline: var(--space-16);
    padding-bottom: var(--space-16);
    transform-origin: top;
  }

  .da-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-8);
    padding: var(--space-12);
    margin-top: var(--space-8);
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top left, rgba(15, 140, 232, 0.18), transparent 65%),
      rgba(15, 23, 42, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.45);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    opacity: 0;
    transform: scaleY(0.96);
    pointer-events: none;
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .da-header__nav-list a {
    padding-block: 0.45rem;
  }

  .da-header__nav-list--open {
    max-height: 420px;
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }

  .da-header__actions {
    gap: var(--space-4);
  }
}

/* Small screens adjustments */

@media (max-width: 640px) {
  .da-header__logo-tagline {
    display: none;
  }

  .da-header__nav-item--highlight .da-header__nav-link--cta {
    text-align: center;
  }
}