:root{
  --main:#4a8fa5;
  --dark:#3b7f92;
  --bg:#f4f7fb;
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial,Helvetica,sans-serif;
}

body{
  background:var(--bg);
}

/* ===== HEADER ===== */
header{
  background:var(--main);
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:999;
}

.navbar{
  max-width:1200px;
  margin:auto;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

.logo{
  color:#fff;
  font-size:24px;
  font-weight:700;
  text-decoration:none;
}

/* ===== DESKTOP MENU ===== */
.menu{
  display:flex;
  gap:22px;
  list-style:none;
}

.menu a{
  color:#fff;
  text-decoration:none;
  font-weight:500;
}

/* ===== HAMBURGER ===== */
.hamburger{
  display:none;
  font-size:26px;
  color:#fff;
  cursor:pointer;
}

/* ===== MOBILE MENU ===== */
.mobile-menu{
  position:fixed;
  top:0;
  left:-100%;
  width:260px;
  height:100%;
  background:var(--main);
  padding:20px;
  transition:0.3s ease;
  z-index:1000;
}

.mobile-menu.active{
  left:0;
}

.mobile-menu .close{
  font-size:22px;
  color:#fff;
  cursor:pointer;
  text-align:right;
}

.mobile-menu a{
  display:block;
  margin:18px 0;
  color:#fff;
  text-decoration:none;
  font-size:16px;
}

/* ===== RESPONSIVE ===== */
@media (max-width:900px){
  .menu{
    display:none;
  }

  .hamburger{
    display:block;
  }
}