/* --------------------- BODY --------------------- */
body {
  margin:0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f7fa;
  color: #1f2a44;
  line-height: 1.6;
}

/* --------------------- HEADER --------------------- */
header {
  background: linear-gradient(90deg, #3da2ff, #1f5bc2);
  padding: 10px 20px;
  color: white;
}

header .logo {
  font-weight: bold;
  font-size: 24px;
}

/* --------------------- NAVIGATION --------------------- */
.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin:0;
  padding:0;
}

.main-nav li {
  position: relative;
}

.main-nav > li {
  margin-left: 30px;
}

.main-nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 10px 5px;
  display: block;
}

.main-nav a:hover { color: #ffeb3b; }

.main-nav li ul {
  display: none;
  position: absolute;
  top: 100%;
  left:0;
  background: white;
  color: #1f2a44;
  min-width: 200px;
  border-radius: 6px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  z-index: 999;
}

.main-nav li ul li a { color: #1f2a44; padding: 10px 15px; }
.main-nav li ul li a:hover { background: #f0f6ff; color: #3da2ff; }

@media(min-width: 901px){
  .main-nav li:hover > ul { display: block; }
}

/* --------------------- PAGE WRAPPER --------------------- */
.page-wrapper { max-width: 1200px; margin: 40px auto; padding: 0 20px; display: grid; grid-template-columns: 3fr 1fr; gap: 40px; }

.page-wrapper.home { display: block; max-width: 800px; margin: 40px auto; padding: 0 20px; }

.hero {
  background: #ffffff;
  padding: 50px;
  border-radius: 8px;
  border:1px solid #d6dce8;
  margin-bottom:40px;
}

h1 { margin-top:0; font-size:38px; }
h2 { margin-top:40px; font-size:26px; }
h3 { margin-top:30px; font-size:20px; }

.content {
  background: #ffffff;
  padding:40px;
  border-radius: 8px;
  border:1px solid #d6dce8;
}

.ad-slot {
  background: #eef2f8;
  border:1px dashed #b9c4d8;
  padding:20px;
  margin-bottom:30px;
  text-align:center;
  font-size:14px;
  color:#4b5e82;
}

/* --------------------- FOOTER --------------------- */
footer {
  background: #ffffff;
  border-top:1px solid #d6dce8;
  padding:40px 20px;
  text-align:center;
  font-size:14px;
  color:#4b5e82;
}

footer a { color:#4b5e82; margin:0 10px; }

/* --------------------- MOBILE MENU --------------------- */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.menu-toggle span {
  height:3px;
  width:25px;
  background:white;
  margin-bottom:5px;
  border-radius:3px;
}

@media(max-width:900px){
  header .logo { text-align:center; width:100%; margin-bottom:10px; }
  .nav-wrapper { flex-direction: column; align-items: flex-end; }
  .menu-toggle { display:flex; margin-bottom:10px; }
  .main-nav { flex-direction: column; width: auto; display: none; align-items: flex-end; }
  .main-nav li { margin-left:0; width: 100%; }
  .main-nav li ul { position: relative; }
}