.site-header{background:#fff;border-bottom:1px solid #f1f5f9;padding:15px 0;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.03)}.header-inner{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:0 20px;position:relative}.site-logo img{height:40px;width:auto;display:block}.main-nav{display:flex;align-items:center;gap:20px}.nav-links{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:25px}.nav-links a{text-decoration:none;color:#334155;font-weight:600;font-size:.95rem;transition:.2s}.nav-links a:hover{color:#2563eb}.auth-buttons{display:flex;align-items:center;gap:10px}.btn-login{background:#0f172a;color:#fff!important;padding:8px 18px;border-radius:6px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:600;font-size:.95rem}.btn-login:hover{background:#334155;transform:translateY(-1px)}.btn-logout{color:#ef4444!important;padding:8px 12px;border:1px solid #fee2e2;border-radius:6px;display:inline-flex;align-items:center;gap:5px;font-size:.9rem;text-decoration:none}.btn-logout:hover{background:#fef2f2;border-color:#ef4444}.mobile-toggle{display:none;background:0 0;border:none;font-size:24px;color:#0f172a;cursor:pointer;padding:5px;transition:.2s}@media (max-width:900px){.hide-mobile{display:none}.mobile-toggle{display:block}.nav-links{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:0;box-shadow:0 10px 20px rgba(0,0,0,.08);border-top:1px solid #f1f5f9;display:none;width:100%}.nav-links.active{display:flex;padding:10px 20px 20px 20px}.nav-links li{width:100%;border-bottom:1px dashed #e2e8f0}.nav-links li:last-child{border-bottom:none}.nav-links a{display:block;width:100%;padding:14px 0;font-size:1.05rem}.btn-login{padding:8px 12px}}