/* ===== HEADER (brand, nav, burger menu) ===== */

.header{
  position:sticky;
  top:0;
  z-index:50;
  background: rgba(0,0,0,0.3);
  border-bottom:1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  transition: all 0.3s ease;
}

/* Scroll-based header styling */
.header.scrolled {
  background: rgba(0,0,0,0.5);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  border-bottom:1px solid rgba(255,255,255,.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header .container.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:80px;
}

.brand{
  display:flex;
  align-items:center;
  gap:.5rem;
  font-weight:700;
  font-size:1.2rem;
  color:var(--text);
  transition: all 0.3s ease;
  text-decoration: none;
}

.brand:hover{
  transform: scale(1.05);
  color: var(--brand2);
}

.brand-logo{
  height:40px;
  width:auto;
  transition: all 0.3s ease;
  filter: brightness(1);
}

.brand:hover .brand-logo{
  filter: brightness(1.1) drop-shadow(0 2px 8px rgba(255,255,255,0.2));
}

.brand-name{
  transition: all 0.3s ease;
}

.menu{
  display:flex;
  gap:1.5rem;
  align-items:center;
}

.menu a{
  color:var(--text);
  font-weight:500;
  font-size:1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding: 0.5rem 0;
}

.menu a::after{
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.menu a:hover{
  color:var(--brand2);
  transform: translateY(-1px);
}

.menu a:hover::after{
  width: 100%;
}

.menu .btn{
  padding:.5rem 1rem;
}

/* Burger menu */
#nav-toggle{ display:none }

.burger{
  display:none;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
  padding: 0.5rem;
  transition: all 0.3s ease;
}

.burger:hover{
  transform: scale(1.05);
}

.burger span{
  display:block;
  width:24px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.burger:hover span{
  background: var(--brand2);
}

/* Burger animation when active */
#nav-toggle:checked ~ .burger span:nth-child(1){
  transform: rotate(45deg) translate(5px, 5px);
}

#nav-toggle:checked ~ .burger span:nth-child(2){
  opacity: 0;
}

#nav-toggle:checked ~ .burger span:nth-child(3){
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Dropdown menu styles */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dropdown-toggle::after {
  content: '▼';
  font-size: 0.7rem;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  min-width: 280px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  padding: 0.5rem 0;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
  position: relative;
}

.dropdown-menu a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--brand2);
  border-left-color: var(--brand2);
  padding-left: 1.75rem;
}

.dropdown-menu a::after {
  display: none;
}

/* Mobile dropdown adjustments */
@media (max-width: 720px) {
  .dropdown-menu {
    position: static;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    background: rgba(0, 0, 0, 0.3);
    border: none;
    border-radius: 0;
    box-shadow: none;
    margin-top: 0.5rem;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
  }
  
  .dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    max-height: 500px;
  }
  
  .dropdown-menu a {
    padding: 0.5rem 1rem;
    border-left: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .dropdown-menu a:hover {
    padding-left: 1rem;
    border-left: none;
    border-bottom-color: var(--brand2);
  }
}