/* Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #333333;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Header */
.site-header {
  background-color: #1a472a;
  padding: 15px 0;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo img {
  height: 50px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: bold;
  display: inline-block;
  text-align: center;
}
.btn-login {
  background-color: transparent;
  border: 2px solid #fff;
  color: #fff;
  margin-right: 10px;
}
.btn-login:hover {
  background-color: rgba(255,255,255,0.1);
}
.btn-register {
  background-color: #f1c40f;
  color: #000;
  border: 2px solid #f1c40f;
}
.btn-register:hover {
  filter: brightness(110%);
}

/* Navigation */
.main-nav {
  background-color: #1a472a;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.nav-list {
  display: flex;
  justify-content: center;
}
.nav-list li a {
  display: block;
  padding: 15px 20px;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}
.nav-list li a:hover,
.nav-list li a.active {
  color: #fff;
  background-color: rgba(0,0,0,0.1);
}

/* Main Content */
.site-main {
  flex: 1;
  padding: 40px 0;
}
.content-wrapper {
  background-color: #ffffff;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.content-wrapper h1 {
  margin-bottom: 25px;
  color: #1a472a;
  border-bottom: 2px solid #f1c40f;
  padding-bottom: 10px;
  display: inline-block;
}
.content-body h2, .content-body h3 {
  margin: 20px 0 10px;
  color: #1a472a;
}
.content-body p { margin-bottom: 15px; }
.content-body a { color: #e67e22; text-decoration: underline; }
.content-body ul { list-style: disc; margin-left: 20px; margin-bottom: 15px; }

/* Footer */
.site-footer {
  background-color: #1a472a;
  color: rgba(255,255,255,0.7);
  padding: 30px 0;
  text-align: center;
  margin-top: auto;
}
.copyright {
  margin-top: 10px;
  font-size: 0.9em;
}

/* Responsive */
@media (max-width: 768px) {
  .header-container { flex-direction: column; gap: 15px; }
  .nav-list { flex-direction: column; text-align: center; }
  .nav-list li a { padding: 10px; }
}