.header{background:linear-gradient(135deg,#1e3a5f,#2d5a8a);padding:0;position:sticky;top:0;z-index:1000;box-shadow:0 4px 12px #00000026}.header-container{max-width:1400px;margin:0 auto;padding:1.2rem 2rem;justify-content:space-between}.header-container,.logo{display:flex;align-items:center}.logo{gap:.75rem;font-size:1.5rem;font-weight:800;color:#fff;transition:opacity .3s}.logo:hover{opacity:.9}.logo-icon{justify-content:center;font-size:1.75rem;color:#7dd3fc}.logo-icon,.nav{display:flex;align-items:center}.nav{gap:2rem}.nav a{color:#fff;font-weight:600;font-size:1rem;padding:.5rem 1rem;border-radius:8px;transition:all .3s}.nav a:hover{background:#ffffff26}.mobile-toggle{display:none;flex-direction:column;gap:5px;background:#0000;padding:.5rem}.mobile-toggle span{width:25px;height:3px;background:#fff;border-radius:2px;transition:all .3s}@media (max-width:768px){.header-container{padding:1rem 1.5rem}.mobile-toggle{display:flex}.nav{position:absolute;top:100%;left:0;right:0;background:linear-gradient(135deg,#1e3a5f,#2d5a8a);flex-direction:column;gap:0;padding:1rem 0;box-shadow:0 4px 12px #00000026;transform:translateY(-100%);opacity:0;pointer-events:none;transition:all .3s}.nav-open{transform:translateY(0);opacity:1;pointer-events:all}.nav a{padding:1rem 2rem;width:100%;border-radius:0}.logo-text{font-size:1.2rem}}