/* Header styles for GreenDoorPL */

.gd-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #ffffff;
  border-bottom: 1px solid rgba(16, 49, 26, 0.08);
  backdrop-filter: blur(10px);
}

.gd-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.gd-header__branding {
  display: flex;
  align-items: center;
}

.gd-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.gd-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 0.9rem;
  background: radial-gradient(circle at 30% 20%, #dff6e3 0, #3f7f4a 45%, #10401d 100%);
  box-shadow: 0 0 0 2px rgba(16, 64, 29, 0.05);
}

.gd-header__site-name {
  font-family: 'Nunito', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #10311a;
}

/* Navigation */

.gd-header__nav {
  display: flex;
}

.gd-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.gd-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.5rem;
  font-family: 'Source Sans 3', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: #194126;
  text-decoration: none;
  border-radius: 999px;
  transition: background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.gd-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #3f7f4a, #6ab07a);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease-out;
}

.gd-header__nav-link:hover,
.gd-header__nav-link:focus-visible {
  background-color: rgba(63, 127, 74, 0.09);
  color: #10311a;
  box-shadow: 0 0 0 1px rgba(63, 127, 74, 0.25);
  outline: none;
}

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

.gd-header__nav-link:focus-visible {
  box-shadow: 0 0 0 2px #1b7b3f;
}

/* Mobile toggle */

.gd-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(16, 49, 26, 0.16);
  background-color: #ffffff;
  padding: 0;
  gap: 0.25rem;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.gd-header__toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(27, 123, 63, 0.6);
}

.gd-header__toggle:hover {
  background-color: rgba(63, 127, 74, 0.07);
  border-color: rgba(16, 49, 26, 0.32);
}

.gd-header__toggle-bar {
  width: 1.25rem;
  height: 2px;
  border-radius: 999px;
  background-color: #14351f;
  transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

/* Toggle active state */

.gd-header__toggle[aria-expanded="true"] .gd-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

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

.gd-header__toggle[aria-expanded="true"] .gd-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Responsive behavior */

@media (max-width: 768px) {
  .gd-header__inner {
    padding-inline: 1rem;
  }

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

  .gd-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid rgba(16, 49, 26, 0.08);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  }

  .gd-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1rem;
    gap: 0.25rem;
  }

  .gd-header__nav-link {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border-radius: 0.75rem;
  }

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

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

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