.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(250,248,245,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);transition:box-shadow .3s}.header-scrolled{box-shadow:0 1px 20px rgba(0,0,0,.06)}.header-container{max-width:1280px;margin:0 auto;padding:0 40px;height:68px;justify-content:space-between}.header-container,.header-logo{display:flex;align-items:center}.header-logo{gap:10px;text-decoration:none;flex-shrink:0}.header-logo,.header-logo:hover{color:var(--text)}.header-logo .logo-icon{width:36px;height:36px;border:1.5px solid var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-family:var(--serif);color:var(--accent);flex-shrink:0;background:transparent;transition:all .3s}.header-logo:hover .logo-icon{background:var(--accent);color:#fff}.header-logo .logo-text{font-family:var(--serif);font-size:24px;font-weight:600;letter-spacing:2px;color:var(--text)}.header-nav{display:flex;align-items:center;gap:32px}.nav-link{font-size:14px;font-weight:400;color:var(--text-secondary);text-decoration:none;padding:4px 0;letter-spacing:.5px;position:relative;white-space:nowrap;transition:color .3s}.nav-link:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--accent);transition:width .3s ease}.nav-link:hover{color:var(--text);background:transparent}.nav-link:hover:after{width:100%}.auth-buttons,.header-user{display:flex;align-items:center}.auth-buttons{gap:12px}.auth-buttons .btn{min-height:auto;padding:8px 20px;font-size:14px}.user-menu-container{position:relative}.user-info-btn{display:flex;align-items:center;gap:8px;padding:6px 12px;border:none;background:transparent;cursor:pointer;border-radius:2px;transition:background-color .2s}.user-info-btn:hover{background-color:var(--bg-alt)}.user-avatar{width:34px;height:34px;border-radius:50%;background:var(--text);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;overflow:hidden;flex-shrink:0}.user-avatar img{width:100%;height:100%;object-fit:cover}.user-nickname{font-size:14px;color:var(--text-secondary);max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dropdown-arrow{font-size:10px;color:var(--text-muted);transition:transform .2s}.user-dropdown{position:absolute;top:100%;right:0;margin-top:8px;min-width:180px;background-color:var(--white);border-radius:3px;box-shadow:0 12px 40px rgba(0,0,0,.12);border:1px solid var(--border-light);z-index:1000;overflow:hidden;animation:dropdownFadeIn .15s ease}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.dropdown-item{display:flex;align-items:center;gap:8px;width:100%;padding:12px 16px;font-size:14px;color:var(--text);text-decoration:none;background:transparent;border:none;cursor:pointer;transition:background-color .2s,color .2s;text-align:left;font-family:var(--sans)}.dropdown-item:hover{background-color:var(--bg-alt);color:var(--accent)}.dropdown-divider{height:1px;background-color:var(--border-light)}.dropdown-logout{color:var(--text-secondary)}.dropdown-logout:hover{color:var(--accent);background-color:rgba(193,127,89,.06)}.mobile-menu-btn{display:none;width:40px;height:40px;font-size:22px;background:none;border:none;cursor:pointer;color:var(--text);align-items:center;justify-content:center;border-radius:2px;transition:background .2s}.mobile-menu-btn:hover{background:var(--bg-alt)}.mobile-menu{display:none;flex-direction:column;background-color:var(--white);border-top:1px solid var(--border-light);padding:12px 16px;box-shadow:0 8px 24px rgba(0,0,0,.08)}.mobile-nav-link{display:block;padding:14px 16px;font-size:15px;color:var(--text);text-decoration:none;border-radius:2px;background:none;border:none;width:100%;text-align:left;cursor:pointer;font-family:var(--sans);transition:all .2s}.mobile-nav-link:hover{background-color:var(--bg-alt);color:var(--accent)}.mobile-nav-link-primary{color:#fff;font-weight:500;background:var(--text);text-align:center;margin-top:4px}.mobile-nav-link-primary:hover{background:var(--accent);color:#fff}.mobile-menu-divider{height:1px;background-color:var(--border-light);margin:8px 0}@media (max-width:1024px){.header-container{padding:0 28px}.header-nav{gap:20px}}@media (max-width:768px){.desktop-only{display:none!important}.mobile-only{display:flex!important}.header-container{padding:0 20px;height:64px}.header-logo{gap:8px}.header-logo .logo-icon{width:32px;height:32px;font-size:15px}.header-logo .logo-text{font-size:21px;letter-spacing:1px}.mobile-menu{display:flex}}