/* Draft Depth Header Styles */

.dd-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background:
    radial-gradient(circle at 0% 0%, rgba(108, 92, 231, 0.32), transparent 55%),
    radial-gradient(circle at 100% 0%, rgba(0, 216, 255, 0.24), transparent 55%),
    linear-gradient(to bottom, rgba(5, 7, 20, 0.96), rgba(5, 7, 20, 0.88));
  border-bottom: 1px solid var(--color-border-subtle);
}

.dd-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-4);
}

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

.dd-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.dd-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 30% 70% 55% 45% / 40% 35% 65% 60%;
  background:
    radial-gradient(circle at 30% 0%, rgba(0, 216, 255, 0.75), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(255, 75, 255, 0.7), transparent 55%),
    linear-gradient(135deg, #020617, #111827);
  box-shadow: var(--shadow-glow-cyan);
  position: relative;
}

.dd-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: inherit;
  border: 1px solid rgba(248, 250, 252, 0.35);
  box-shadow: inset 0 0 10px rgba(15, 23, 42, 0.9);
}

.dd-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.dd-header__logo-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.dd-header__logo-subtitle {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-soft);
}

/* Navigation */

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

.dd-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.dd-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.3rem;
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.dd-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-magenta));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

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

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

.dd-header__nav-item--cta .dd-header__nav-link {
  padding-inline: 1.1rem;
  padding-block: 0.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background:
    radial-gradient(circle at 0% 0%, rgba(0, 216, 255, 0.22), transparent 55%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 64, 175, 0.85));
  box-shadow: var(--shadow-soft);
}

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

.dd-header__nav-link.dd-header__nav-link--cta:hover,
.dd-header__nav-link.dd-header__nav-link--cta:focus-visible {
  border-color: rgba(0, 216, 255, 0.95);
  box-shadow: var(--shadow-glow-cyan);
}

/* Mobile toggle */

.dd-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 32px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.dd-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base),
    translate var(--transition-base);
}

.dd-header__toggle-bar + .dd-header__toggle-bar {
  margin-top: 4px;
}

/* Active state */

.dd-header--menu-open .dd-header__toggle-bar:nth-child(1) {
  transform: rotate(40deg);
  translate: 0 6px;
}

.dd-header--menu-open .dd-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.dd-header--menu-open .dd-header__toggle-bar:nth-child(3) {
  transform: rotate(-40deg);
  translate: 0 -6px;
}

/* Mobile layout */

@media (max-width: 768px) {
  .dd-header__inner {
    height: auto;
    padding-block: var(--space-3);
  }

  .dd-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .dd-header__nav {
    position: fixed;
    inset-inline: 0;
    top: var(--header-height);
    background: radial-gradient(circle at 0% 0%, rgba(108, 92, 231, 0.3), transparent 55%),
      radial-gradient(circle at 100% 0%, rgba(0, 216, 255, 0.3), transparent 55%),
      linear-gradient(to bottom, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

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

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

  .dd-header__nav-link {
    font-size: var(--font-size-sm);
  }

  .dd-header__nav-link::after {
    bottom: -0.15rem;
  }
}

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
  .dd-header__nav,
  .dd-header__toggle-bar {
    transition: none;
  }
}