/* Hamburger button styles + mobile nav */
.hamburger {
  align-items: center;
  justify-content: left;
  width: 44px;
  height: 44px;
  padding: 6px;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.hamburger:focus { outline: none; }
.hamburger-box {
  width: 28px;
  height: 18px;
  display: inline-block;
  position: relative;
}
.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
  width: 28px;
  height: 2px;
  background-color: #000;
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: transform 0.5s ease, opacity 0.2s ease;
}
.hamburger-inner {
  top: 50%;
  transform: translateY(-50%);
}
.hamburger-inner::before {
  content: "";
  top: -8px;
}
.hamburger-inner::after {
  content: "";
  top: 8px;
}

/* Active state - transform into X */
.hamburger.active .hamburger-inner {
  background-color: transparent;
}
.hamburger.active .hamburger-inner::before {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.active .hamburger-inner::after {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile nav styles - dynamic scrollable */
.mobile-nav {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(.67,0,.39,1), opacity 0.4s ease;
  opacity: 0;
  background: white;
  -webkit-overflow-scrolling: touch;
}
.mobile-nav.open {
  /* Dynamic max-height will be set by JavaScript */
  max-height: calc(100vh - 108px); /* fallback: 100vh - header height */
  overflow-y: auto;
  overflow-x: hidden;
  opacity: 1;
}

/* Responsive font sizes for small screens */
@media (max-height: 600px) {
  .mobile-nav a {
    padding-top: 0.375rem !important;
    padding-bottom: 0.375rem !important;
    font-size: 0.813rem !important;
  }
}

@media (max-height: 500px) {
  .mobile-nav a {
    padding-top: 0.25rem !important;
    padding-bottom: 0.25rem !important;
    font-size: 0.75rem !important;
  }
}

/* Mobile link style */
.mobile-nav a { color: #111827; text-decoration: none; }

/* Dark bg when mobile menu open (optional overlay) */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease, visibility 1s linear 1s;
  z-index: 40;
}
.mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
  transition-delay: 1s;
}