/* ========== Reset & Base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', sans-serif; color: #333; background: #fff; line-height: 1.6; }
a { text-decoration: none; }

/* Watermark */
.watermark{
  position: fixed; inset: 0;
  background: url('assets/logo-watermark.png') no-repeat center center / 400px auto;
  opacity: .05; pointer-events: none; z-index: -1;
}

/* ========== Navbar ========== */
.navbar{ position: sticky; top: 0; z-index: 1000; background: #004aad; color: #fff; }
.nav-inner{
  max-width: 1200px; margin: 0 auto; padding: 0.8rem 1rem;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.logo-container{ display: flex; align-items: center; gap: 10px; min-width: 180px; }
.logo{ height: 48px; }
.short-name{ font-weight: 700; font-size: 1.1rem; color: #fff; }

/* nav list */
.nav-toggle{ display: none; font-size: 1.6rem; color: #fff; cursor: pointer; user-select: none; }
.navbar nav ul{
  list-style: none; display: flex; align-items: center;
  gap: clamp(.4rem, 0.9vw, .8rem);
  font-size: clamp(.9rem, 1.05vw, 1rem);
  white-space: nowrap;
}
.navbar nav ul li{ position: relative; }
.navbar nav ul li a{
  color: #fff; padding: .42rem .68rem; border-radius: 6px; font-weight: 500;
  transition: background .25s ease;
}
.navbar nav ul li a:hover,
.navbar nav ul li a.active{ background: rgba(255,255,255,.2); }

/* right spacer to push Register/Login to far end */
.navbar .nav-spacer{ flex: 1 1 auto; }

/* ===== Dropdown ===== */
.dropdown > a::after{ content: " ▼"; font-size: .8em; }
.dropdown-content{
  display: none; position: absolute; top: 100%; left: 0;
  min-width: 220px; background: #004aad; padding: 8px; border-radius: 8px;
  box-shadow: 0 12px 28px rgba(0,0,0,.18); z-index: 1001;
}
.dropdown-content li{ list-style: none; }
.dropdown-content a{ display: block; color: #fff; padding: 8px 10px; border-radius: 6px; }
.dropdown-content a:hover{ background: rgba(255,255,255,.15); }

/* Desktop: hover to open (>=1025px) */
@media (min-width: 1025px){
  .dropdown:hover > .dropdown-content{ display: block; }
}

/* Mobile/Tablet: <=1024px hamburger */
@media (max-width: 1024px){
  .nav-toggle{ display: block; }
  .nav-inner{ padding: .7rem .9rem; }
  .logo{ height: 42px; }

  .navbar nav ul{
    position: absolute; left: 0; right: 0; top: 60px;
    background: #004aad; display: none; flex-direction: column; align-items: stretch;
    padding: 10px 12px; gap: 6px;
  }
  .navbar nav ul.show{ display: flex; }
  .navbar nav ul li a{ padding: .6rem .7rem; border-radius: 6px; }
  .navbar .nav-spacer{ display: none; }

  .dropdown-content{
    position: static; display: none; box-shadow: none; background: rgba(255,255,255,.06);
    padding: 6px; margin: 4px 0 6px 8px; border-radius: 8px;
  }
  .dropdown.open > .dropdown-content{ display: block; }
}

/* ========== Banner ========== */
.banner{
  height: 500px; background-size: cover; background-position: center;
  display: grid; place-items: center; text-align: center;
  color: #fff; text-shadow: 0 2px 4px rgba(0,0,0,.6);
}

/* ========== Scroll Sections ========== */
.scroll-section{
  display: grid; grid-template-columns: 350px 1fr; align-items: center; gap: 22px;
  padding: 40px 16px; max-width: 1150px; margin: 0 auto;
}
.scroll-img img{
  width: 350px; border-radius: 10px; box-shadow: 0 4px 10px rgba(0,0,0,.1);
}
.scroll-text h2{ font-size: 1.8rem; color: #004aad; margin-bottom: 10px; }
.scroll-text p{ margin-bottom: 12px; }

/* Buttons */
.btn{
  display: inline-block; padding: .6rem 1.1rem; background: #004aad; color: #fff;
  border-radius: 6px; transition: background .25s ease;
}
.btn:hover{ background: #002d66; }
.btn-outline{ background:transparent; border:2px solid #004aad; color:#004aad; }
.btn-outline:hover{ background:#004aad; color:#fff; }

/* Sub-links (chips) */
.sub-links{
  display: flex; flex-wrap: wrap; gap: 8px 10px; margin: 8px 0 10px;
}
.chip{
  display: inline-block;
  padding: .4rem .7rem; border-radius: 999px;
  background: #eef3ff; color: #0d3ea6; border: 1px solid #cfe0ff;
  font-size: .92rem; line-height: 1;
}
.chip:hover{ background: #dfeaff; }

/* Responsive */
@media (max-width: 900px){
  .scroll-section{ grid-template-columns: 1fr; text-align: center; }
  .scroll-img img{ margin: 0 auto; }
}
@media (max-width: 480px){
  .scroll-img img{ width: 300px; }
}

/* ========== Footer ========== */
.footer{
  background: #004aad; color: #fff; padding: 2rem 1rem; text-align: center; font-size: .9rem;
}
.footer-cols{
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem; padding-bottom: 2rem; max-width: 1150px; margin: 0 auto;
}
.footer-cols h4{ margin-bottom: .5rem; }
.footer-cols ul{ list-style: none; }
.footer-cols li{ margin-bottom: .5rem; }
.footer-cols a{ color: #d9e4ff; }
.footer-cols a:hover{ color: #fff; }
.social-icons img{ width: 24px; filter: brightness(0) invert(1); }