/* =========================
   BASE RESET / GLOBAL
   ========================= */

html, body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  color: white;
}

/* 🌊 GLOBAL BACKGROUND */
body {
  background-image: url('assets/banner.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* =========================
   HEADER
   ========================= */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;

  background: rgba(11, 42, 68, 0.9);
}

.logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo img {
  height: 50px;
}

/* =========================
   NAVIGATION
   ========================= */

nav a {
  color: white;
  text-decoration: none;
  margin-left: 20px;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

/* =========================
   BUTTON SYSTEM (GLOBAL UI)
   ========================= */

.btn {
  display: inline-block;
  padding: 12px 20px;
  margin: 10px;

  background: #1e90ff;
  color: white;
  text-decoration: none;

  border-radius: 8px;
  transition: 0.2s;
}

.btn:hover {
  background: #0d6efd;
  transform: scale(1.05);
}

/* =========================
   FOOTER
   ========================= */

footer {
  text-align: center;
  padding: 30px;

  background: rgba(11, 42, 68, 0.9);
  position: relative;
  z-index: 0;
  font-size: 0.9rem;
  opacity: 0.9;
}


/* =========================
   MOBILE NAV SYSTEM
   ========================= */

@media (max-width: 768px) {

header {
  flex-direction: column;
  align-items: flex-start;
}

nav {
  margin-top: 10px;
}

nav a {
  display: block;
  margin: 10px 0;
}

}