.header-nav{background:linear-gradient(135deg,#2f2f6e,#22227a,#0a0a15);border-bottom:1px solid rgba(255,255,255,.1);box-shadow:0 2px 10px #0000004d;position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-container{max-width:1200px;margin:0 auto;padding:0 20px;height:80px;display:flex;justify-content:space-between;align-items:center}.header-container>div{display:flex;align-items:center}.header-container>div:first-child{flex:1}.header-container>div:last-child{flex-shrink:0}.header-logo{display:flex;align-items:center;flex-shrink:0;min-width:120px}.header-logo a{text-decoration:none;display:flex;align-items:center;transition:transform .3s ease}.header-logo a:hover{transform:scale(1.05)}.header-logo img{height:50px;width:auto;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2));display:block;visibility:visible;opacity:1}.header-nav-links{display:flex;align-items:center;gap:2rem;margin-left:3rem}.nav-link{color:#fff;text-decoration:none;font-weight:500;font-size:1rem;padding:.5rem 1rem;border-radius:8px;transition:all .3s ease;position:relative;overflow:hidden}.nav-link:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:#ffffff1a;transition:left .3s ease}.nav-link:hover:before{left:0}.nav-link:hover{color:gold;transform:translateY(-2px);text-shadow:0 2px 4px rgba(0,0,0,.3)}.nav-link.active{background:#fff3;color:gold;box-shadow:0 2px 8px #ffd7004d}.header-user-section{display:flex;align-items:center;gap:1rem}.user-dropdown-trigger{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem 1rem;border-radius:8px;cursor:pointer;display:flex;align-items:center;gap:.5rem;font-size:.9rem;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.user-dropdown-trigger:hover{background:#fff3;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.user-dropdown-trigger svg{transition:transform .3s ease}.user-dropdown-trigger:hover svg{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:100%;right:0;margin-top:.5rem;background:#fff;border-radius:12px;box-shadow:0 10px 30px #0003;min-width:200px;overflow:hidden;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s ease}.dropdown-menu.show{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{display:block;padding:.75rem 1rem;color:#333;text-decoration:none;transition:all .3s ease;border-bottom:1px solid rgba(0,0,0,.05)}.dropdown-item:last-child{border-bottom:none}.dropdown-item:hover{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding-left:1.5rem}.mobile-menu-button{display:none;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:.5rem;border-radius:8px;cursor:pointer;transition:all .3s ease}.mobile-menu-button:hover{background:#fff3;transform:scale(1.1)}.mobile-menu-button svg{width:24px;height:24px}.mobile-nav{display:none;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid rgba(0,0,0,.1)}.mobile-nav.show{display:block}.mobile-nav-links{padding:1rem 0}.mobile-nav-link{display:block;padding:1rem 20px;color:#333;text-decoration:none;font-weight:500;transition:all .3s ease;border-bottom:1px solid rgba(0,0,0,.05)}.mobile-nav-link:hover{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding-left:2rem}.mobile-nav-link.active{background:#667eea1a;color:#667eea;font-weight:600}.mobile-user-section{padding:1rem 20px;border-top:1px solid rgba(0,0,0,.1);background:#00000005}.mobile-user-info{margin-bottom:1rem}.mobile-user-name{font-weight:600;color:#333;font-size:1rem}.mobile-user-email{color:#666;font-size:.9rem}@media (max-width: 768px){.header-nav-links,.header-user-section{display:none}.mobile-menu-button{display:block}.mobile-nav{display:none}.header-container{padding:0 15px;height:70px}.header-logo img{height:40px}}@media (max-width: 480px){.header-container{padding:0 10px}.header-logo img{height:35px}}.fade-in{animation:fadeIn .3s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.header-nav.scrolled{background:#667eeaf2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:0 4px 20px #0003}.nav-link:focus,.user-dropdown-trigger:focus,.mobile-menu-button:focus{outline:2px solid #ffd700;outline-offset:2px}@media (prefers-color-scheme: dark){.dropdown-menu{background:#2d3748;color:#fff}.dropdown-item{color:#fff;border-bottom-color:#ffffff1a}.dropdown-item:hover{background:#ffffff1a}}