/* Header layout */
.pw-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-background) 80%, #ffffff 20%);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.pw-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

/* Brand */
.pw-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

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

.pw-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 20%, #60a5fa, #1d4ed8);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.pw-header__logo-drop {
  width: 18px;
  height: 24px;
  border-radius: 50% 50% 55% 55% / 65% 65% 35% 35%;
  background: #e0f2fe;
  box-shadow: 0 0 0 2px rgba(191, 219, 254, 0.55);
}

.pw-header__brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.pw-header__brand-name {
  font-family: "Poppins", var(--font-sans);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.pw-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

@media (max-width: 480px) {
  .pw-header__brand-tagline {
    display: none;
  }
}

/* Navigation */
.pw-header__nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-5);
}

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

.pw-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.25rem 0;
  text-decoration: none;
}

.pw-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1d4ed8, #0ea5e9);
  transition: width var(--transition-base);
}

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

.pw-header__nav-link:hover {
  color: var(--color-primary-dark);
}

.pw-header__actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.pw-header__action-link {
  font-size: var(--font-size-xs);
  padding-inline: 0.9rem;
  padding-block: 0.55rem;
}

.pw-header__action-link--primary {
  font-size: var(--font-size-sm);
}

/* Toggle (mobile) */
.pw-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-full);
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background-color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  color: var(--gray-800);
}

.pw-header__toggle-box {
  width: 18px;
  height: 16px;
  position: relative;
}

.pw-header__toggle-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-fast), top var(--transition-base), bottom var(--transition-base);
}

.pw-header__toggle-line--top {
  top: 0;
}

.pw-header__toggle-line--middle {
  top: 50%;
  transform: translateY(-50%);
}

.pw-header__toggle-line--bottom {
  bottom: 0;
}

.pw-header__toggle-text {
  font-size: var(--font-size-xs);
  font-weight: 500;
}

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

/* Mobile state */
@media (max-width: 960px) {
  .pw-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

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

  .pw-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-16) var(--space-4) var(--space-6);
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.4));
    backdrop-filter: blur(18px);
    transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
  }

  .pw-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
  }

  .pw-header__nav-link {
    font-size: var(--font-size-lg);
    color: #e5edff;
  }

  .pw-header__nav-link::after {
    background: rgba(191, 219, 254, 0.9);
  }

  .pw-header__actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .pw-header__action-link {
    width: 100%;
    justify-content: center;
  }

  .pw-header--nav-open .pw-header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .pw-header--nav-open .pw-header__toggle-line--top {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
  }

  .pw-header--nav-open .pw-header__toggle-line--middle {
    opacity: 0;
  }

  .pw-header--nav-open .pw-header__toggle-line--bottom {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
  }
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  .pw-header__nav,
  .pw-header__toggle-line {
    transition: none;
  }
}