/* ================== Base & Reset ================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  color: #002f6c;
  line-height: 1.6;
  font-size: 16px;
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: #0073e6;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: #ffbb00;
  outline: none;
  text-decoration: underline;
}

/* ================ Container ================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ================ Header Styles ================== */
.site-header {
  background-color: #003d99;
  box-shadow: 0 2px 6px rgba(0, 61, 153, 0.3);
  position: sticky;
  top: 0;
  z-index: 10000;
  color: white;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
}

.navbar-brand {
  display: flex;
  align-items: center;
}

.navbar-logo {
  font-weight: 900;
  font-size: 1.7rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1.2px;
  padding: 10px 0;
  user-select: none;
}

/* Hamburger toggle button */
.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 28px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: 20px;
}

.navbar-toggle:focus {
  outline: 2px solid #ffbb00;
}

.navbar-toggle-bar {
  width: 100%;
  height: 3.5px;
  background-color: #fff;
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Navigation links */
.navbar-links {
  list-style: none;
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.navbar-links li a {
  font-weight: 600;
  color: #bbe1ff;
  padding: 12px 10px;
  font-size: 1rem;
  border-radius: 5px;
  white-space: nowrap;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.navbar-links li a:hover,
.navbar-links li a:focus {
  background-color: #ffbb00;
  color: #003d99;
  outline: none;
}

/* ================ Responsive Navigation ================ */
@media (max-width: 900px) {
  .navbar-toggle {
    display: flex;
  }

  .navbar-links {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: #003d99;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
    border-radius: 0 0 12px 12px;
    box-shadow: 0 10px 25px rgba(0, 53, 127, 0.7);
  }

  .navbar-links.navbar-links-open {
    max-height: 500px; /* enough room for expanded links */
    padding: 10px 0;
  }

  .navbar-links li a {
    padding: 15px 0;
    text-align: center;
    font-size: 1.1rem;
  }
}

/* ================ Footer Styles ================== */
footer {
  background-color: #003d99;
  color: #bbe1ff;
  padding: 36px 20px 24px;
  text-align: center;
  border-top: 4px solid #0073e6;
  margin-top: 60px;
  box-shadow: 0 -2px 10px rgba(0, 61, 153, 0.08);
  font-size: 1rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.footer-inner p {
  margin: 0;
  color: #bbe1ff;
  font-weight: 400;
}

.footer-inner a {
  color: #bbe1ff;
  font-weight: 600;
  text-decoration: underline;
  transition: color 0.2s ease;
}

.footer-inner a:hover,
.footer-inner a:focus {
  color: #ffbb00;
  outline: none;
  text-decoration: underline;
}

.footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav li {
  display: inline;
}

.footer-nav li a {
  color: #bbe1ff;
  font-weight: 600;
  font-size: 1rem;
  padding: 0 4px;
  border-radius: 2px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.footer-nav li a:hover,
.footer-nav li a:focus {
  color: #ffbb00;
  background-color: rgba(255, 187, 0, 0.15);
  outline: none;
}

/* Responsive footer */
@media (max-width: 600px) {
  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
  .footer-inner {
    font-size: 0.95rem;
  }
}

/* ================ Main Content Style ================ */
main {
  max-width: 960px;
  margin: 40px auto;
  background-color: #f9fbff;
  padding: 40px 35px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 47, 102, 0.1);
  color: #003d99;
  font-size: 1.1rem;
  line-height: 1.7;
}

/* Headings */
h1, h2, h3 {
  color: #002f6c;
  font-weight: 800;
  margin-top: 0;
  margin-bottom: 20px;
}

/* Lists */
ul, ol {
  margin-left: 25px;
  margin-bottom: 25px;
  color: #004aad;
}

/* Responsive */
@media (max-width: 700px) {
  main {
    margin: 20px;
    padding: 20px;
    font-size: 1rem;
  }
}