/* header.css — top banner, navigation, mobile nav */
.skip-nav{position:absolute;top:-100px;left:0;background:var(--sky-dark);color:white;padding:8px 16px;font-family:var(--font-ui);font-size:15px;font-weight:700;text-decoration:none;z-index:9999;border-radius:0 0 8px 0;transition:top .2s}
.skip-nav:focus{top:0}
.top-banner{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:0;background:var(--slate-dark);padding:0 5%;font-family:var(--font-ui);font-size:15px;font-weight:400;color:rgba(245,247,249,.55);letter-spacing:.3px}
.top-banner a{color:rgba(245,247,249,.55);text-decoration:none;transition:color .2s;padding:10px 0;display:inline-flex;align-items:center}
.top-banner a:hover{color:rgba(245,247,249,.9)}
.top-banner-item{display:flex;align-items:center;gap:6px;padding:0 12px;min-height:44px}
.top-banner-sep{color:rgba(245,247,249,.2);padding:0 2px}
#navbar{display:flex;align-items:center;justify-content:space-between;padding:0 5%;height:72px;background:var(--slate-dark);position:sticky;top:0;z-index:1000;border-bottom:1px solid rgba(255,255,255,.06);transition:box-shadow .3s,background .3s}
#navbar.scrolled{box-shadow:0 2px 24px rgba(41,51,64,.4);background:rgba(41,51,64,.97);backdrop-filter:blur(12px)}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;color:inherit}
.nav-logo-mark{width:44px;height:44px;border-radius:10px;background:var(--sky-dark);display:flex;align-items:center;justify-content:center;font-family:var(--font-ui);font-size:15px;font-weight:800;color:white;letter-spacing:.5px}
.nav-logo-text{font-family:var(--font-ui);font-size:17px;font-weight:700;color:var(--white);letter-spacing:-.3px}
.nav-logo-text span{color:var(--sky-light)}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-links a{font-family:var(--font-ui);font-size:15px;font-weight:600;color:rgba(245,247,249,.6);text-decoration:none;padding:8px 12px;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav-links a:hover{color:var(--white);background:rgba(255,255,255,.06)}
.nav-links .nav-cta{background:var(--sky-dark);color:white;padding:10px 18px;border-radius:10px;margin-left:8px}
.nav-links .nav-cta:hover{background:var(--sky);color:white}
.nav-hamburger{display:none;flex-direction:column;justify-content:space-between;width:24px;height:18px;background:none;border:none;cursor:pointer;padding:0;flex-shrink:0}
.nav-hamburger span{display:block;height:2px;width:100%;background:rgba(245,247,249,.7);border-radius:2px;transition:transform .3s,opacity .3s}
.nav-hamburger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-hamburger.open span:nth-child(2){opacity:0}
.nav-hamburger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.nav-mobile{position:fixed;top:0;right:0;bottom:0;width:min(320px,85vw);background:var(--slate-dark);z-index:999;padding:80px 28px 32px;display:flex;flex-direction:column;gap:4px;transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);box-shadow:-8px 0 40px rgba(41,51,64,.4)}
.nav-mobile.open{transform:translateX(0)}
.nav-mobile a{font-family:var(--font-ui);font-size:16px;font-weight:600;color:rgba(245,247,249,.7);text-decoration:none;padding:14px 16px;border-radius:10px;transition:color .2s,background .2s}
.nav-mobile a:hover{color:var(--white);background:rgba(255,255,255,.06)}
.nav-mobile .mobile-cta{background:var(--sky-dark);color:white;text-align:center;margin-top:12px;padding:16px}
.nav-mobile .mobile-cta:hover{background:var(--sky)}
@media(max-width:860px){.nav-links{display:none}.nav-hamburger{display:flex}}
@media(max-width:600px){.top-banner-sep{display:none}.top-banner{flex-direction:column;gap:4px;padding:10px 5%;text-align:center}.top-banner-item{padding:0}}