/* One header for every Aepp page (homepage, exam papers, syllabus, privacy, terms).
   Loaded last on each page so it wins over the page's own older header styles. */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 246, 251, .9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e1e5f0;
  font-family: "Manrope", system-ui, sans-serif;
}
.site-nav .wrap {
  max-width: 1120px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; gap: 24px; height: 68px;
}
.site-nav .brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.15rem; line-height: 1; color: #123f80;
  text-decoration: none; white-space: nowrap;
}
.site-nav .brand img { width: 36px; height: 36px; border-radius: 10px; }
.site-nav .nav-links { display: flex; gap: 24px; margin-left: auto; }
.site-nav .nav-links a {
  color: #5a6275; font-weight: 600; font-size: 1rem;
  text-decoration: none; white-space: nowrap;
}
.site-nav .nav-links a:hover,
.site-nav .nav-links a[aria-current="page"] { color: #1a5ebd; }
.site-nav .nav-links a[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.site-nav .btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 999px;
  background: #1a5ebd; color: #fff;
  font-weight: 700; font-size: .9rem; line-height: 1.2;
  text-decoration: none; white-space: nowrap;
  box-shadow: 0 8px 20px rgba(26, 94, 189, .28);
  transition: background .2s, transform .2s;
}
.site-nav .btn:hover { background: #123f80; transform: translateY(-1px); }
.site-nav .btn svg { width: 18px; height: 18px; fill: currentColor; }

@media (max-width: 1060px) {
  .site-nav .wrap { gap: 18px; }
  .site-nav .nav-links { gap: 16px; }
  .site-nav .nav-links a { font-size: .94rem; }
}
/* Phones and small tablets: logo + download button only (same as before on every page) */
@media (max-width: 900px) {
  .site-nav .nav-links { display: none; }
  .site-nav .btn { margin-left: auto; }
}
@media (max-width: 420px) {
  .site-nav .wrap { gap: 12px; }
  .site-nav .brand { font-size: 1rem; }
  .site-nav .btn { padding: 8px 14px; }
}

/* ☰ menu for phones and tablets: same links as the desktop header */
.site-nav .menu-toggle {
  display: none; flex: none;
  width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid #e1e5f0; background: #fff; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.site-nav .menu-toggle span { display: block; width: 18px; height: 2px; border-radius: 2px; background: #123f80; transition: transform .2s, opacity .2s; }
.site-nav .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-nav .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav .mobile-menu {
  border-top: 1px solid #e1e5f0; background: #fff;
  box-shadow: 0 18px 30px rgba(23, 28, 43, .12);
  padding: 8px 16px 16px;
}
.site-nav .mobile-menu[hidden] { display: none; }
.site-nav .mobile-menu a {
  display: block; max-width: 1120px; margin: 0 auto;
  padding: 14px 4px; border-bottom: 1px solid #eef0f6;
  color: #171c2b; font-weight: 700; font-size: 1.05rem; text-decoration: none;
}
.site-nav .mobile-menu a:last-child { border-bottom: 0; }
.site-nav .mobile-menu a[aria-current="page"] { color: #1a5ebd; }
@media (max-width: 900px) {
  .site-nav .menu-toggle { display: flex; }
  .site-nav .wrap { gap: 10px; }
}
@media (min-width: 901px) {
  .site-nav .mobile-menu { display: none !important; }
}
@media (max-width: 360px) {
  .site-nav .brand img { width: 30px; height: 30px; }
  .site-nav .btn svg { display: none; }
}

/* Phones: "Λήψη" instead of "Κατέβασέ το" so logo, button and ☰ fit without overlapping */
.site-nav .btn-short { display: none; }
@media (max-width: 480px) {
  .site-nav .btn-long { display: none; }
  .site-nav .btn-short { display: inline; }
}
.site-nav .brand { min-width: 0; }