.app-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-height);display:flex;align-items:center;padding:0 clamp(20px,5vw,48px);background:transparent;transition:background .4s var(--ease),box-shadow .4s var(--ease)}.app-header.scrolled{background:hsla(0,0%,100%,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 1px 0 var(--border)}.header-content{max-width:var(--max-width);width:100%;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.header-logo{height:150px;width:auto;transition:opacity .3s var(--ease)}.header-logo:hover{opacity:.8}.nav-links{display:flex;align-items:center;gap:36px}.nav-link{font-size:.875rem;font-weight:500;color:hsla(0,0%,100%,.9);letter-spacing:.04em;text-transform:uppercase;position:relative;padding:4px 0;transition:color .3s var(--ease)}.app-header.scrolled .nav-link{color:var(--text)}.nav-link:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:1px;transition:width .3s var(--ease)}.nav-link:hover:after{width:100%}.header-cta{padding:10px 28px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border:none;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;transition:all .3s var(--ease);display:inline-block}.header-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,119,230,.3)}.menu-toggle{display:none;flex-direction:column;gap:6px;background:none;border:none;padding:8px;z-index:1002;cursor:pointer}.menu-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s var(--ease)}.app-header.scrolled .menu-toggle span,.menu-toggle.active span{background:var(--text)}.menu-toggle.active span:first-child{transform:translateY(8px) rotate(45deg)}.menu-toggle.active span:nth-child(2){opacity:0}.menu-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:999;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}@media (max-width:768px){.menu-toggle{display:flex}.nav-links{position:fixed;top:0;right:-100%;width:min(300px,80vw);height:100vh;background:#fff;flex-direction:column;justify-content:center;align-items:flex-start;gap:28px;padding:48px;z-index:1001;transition:right .4s var(--ease);box-shadow:var(--shadow-xl)}.nav-links.open{right:0}.nav-links .nav-link{color:var(--text);font-size:1rem}.nav-links .header-cta{margin-top:12px;width:100%;text-align:center}}