/* Header styles for WaterFlowStore */

.wf-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-header);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.wf-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

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

.wf-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.wf-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, #3dd5ff, #0b6b8a 70%, #020617 100%);
  box-shadow: var(--shadow-md);
}

.wf-header__logo-mark i {
  font-size: 0.9rem;
}

.wf-header__logo-text {
  font-size: var(--font-size-lg);
}

/* Toggle button (mobile) */
.wf-header__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: #ffffff;
  background: transparent;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 0.35rem 0.75rem;
  box-shadow: none;
}

.wf-header__toggle:hover {
  background: rgba(15, 23, 42, 0.7);
  box-shadow: var(--shadow-xs);
}

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

.wf-header__toggle-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.wf-header__toggle-icon {
  position: relative;
  width: 18px;
  height: 14px;
}

.wf-header__toggle-icon::before,
.wf-header__toggle-icon::after,
.wf-header__toggle-icon span {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background: #e5e7eb;
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.wf-header__toggle-icon::before {
  top: 0;
}

.wf-header__toggle-icon::after {
  bottom: 0;
}

/* Middle line via pseudo child for progressive enhancement */
.wf-header__toggle-icon::before,
.wf-header__toggle-icon::after {
  box-shadow: 0 6px 0 0 #e5e7eb;
}

/* Nav */
.wf-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

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

.wf-header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: #e5e7eb;
  padding-block: 0.15rem;
  position: relative;
}

.wf-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.2rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #38bdf8, #1da4c9);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

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

.wf-header__nav-link:hover {
  color: #ffffff;
}

.wf-header__nav-link:focus-visible {
  outline-offset: 3px;
}

.wf-header__actions {
  display: flex;
  align-items: center;
}

.wf-header__cta {
  font-size: var(--font-size-sm);
  padding-inline: 1.1rem;
  padding-block: 0.45rem;
}

/* State when mobile menu is open */
.wf-header--menu-open {
  box-shadow: var(--shadow-md);
}

.wf-header--menu-open .wf-header__toggle-icon::before {
  top: 6px;
  transform: rotate(45deg);
  box-shadow: none;
}

.wf-header--menu-open .wf-header__toggle-icon::after {
  bottom: 6px;
  transform: rotate(-45deg);
  box-shadow: none;
}

/* Responsive */
@media (max-width: 768px) {
  .wf-header__inner {
    padding-block: var(--space-2);
  }

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

  .wf-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: #020617;
    border-bottom: 1px solid rgba(148, 163, 184, 0.25);
    padding-block: var(--space-3);
    padding-inline: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    overflow: hidden;
    transform-origin: top;
    transform: scaleY(0.96);
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .wf-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .wf-header__actions {
    width: 100%;
    justify-content: flex-start;
    margin-top: var(--space-2);
  }

  .wf-header__cta {
    width: auto;
  }

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

@media (min-width: 769px) {
  .wf-header__toggle {
    display: none;
  }

  .wf-header__nav {
    position: static;
    max-height: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    padding: 0;
  }
}