html {
  scroll-behavior: smooth;
}

body {
  background-color: #0b1a13;
  color: #e2e8f0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 20px;
  line-height: 1.6;
}

.layout-wrapper {
  display: flex;
  max-width: 1000px;
  margin: 0 auto;
  gap: 20px;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
}

.sidebar-menu {
  background-color: #132a20;
  border: 1px solid #1e3e30;
  border-radius: 8px;
  padding: 15px;
}

.sidebar-menu h3 {
  color: #22c55e;
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.1rem;
  border-bottom: 1px solid #1e3e30;
  padding-bottom: 5px;
}

.sidebar-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-menu li {
  margin-bottom: 10px;
}

.sidebar-menu a {
  display: block;
  padding: 6px 10px;
  background-color: #0b1a13;
  color: #e2e8f0;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.sidebar-menu a:hover {
  background-color: #22c55e;
  color: #0b1a13;
}

.sidebar-menu a:visited {
  color: #e2e8f0;
}

.sidebar-menu a:active {
  background-color: #15803d;
  color: #ffffff;
}

.content-container {
  flex-grow: 1;
}

h1 {
  color: #22c55e;
  font-size: 2.5rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
  margin-bottom: 25px;
}

h2 {
  color: #f1f5f9;
  font-size: 1.5rem;
  border-bottom: 2px solid #22c55e;
  padding-bottom: 8px;
  margin-top: 0;
}

.intro-block, .info-block {
  background-color: #132a20;
  border-left: 4px solid #22c55e;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 25px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
}

.intro-block p {
  margin: 8px 0;
  font-size: 1.1rem;
}

.image-wrapper img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 2px solid #1e3e30;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  margin-bottom: 25px;
  display: block;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-wrapper img:hover {
  transform: scale(1.015);
  box-shadow: 0 12px 20px -3px rgba(34, 197, 94, 0.25);
}

ul {
  padding-left: 20px;
  margin: 10px 0;
}

li {
  margin-bottom: 8px;
}

a {
  color: #22c55e;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

a:hover {
  color: #4ade80;
  text-decoration: underline;
}

a:visited {
  color: #22c55e;
}

a:active {
  color: #15803d;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 15px;
}

.brand-button {
  display: inline-block;
  padding: 10px 18px;
  background-color: #22c55e;
  color: #0b1a13;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.brand-button:hover {
  background-color: #4ade80;
  color: #0b1a13;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 8px rgba(0, 0, 0, 0.4);
}

.brand-button:visited {
  color: #0b1a13;
  background-color: #22c55e;
}

.brand-button:active {
  background-color: #15803d;
  color: #ffffff;
  transform: translateY(1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.brand-button:focus {
  outline: 2px solid #4ade80;
  outline-offset: 2px;
}

.main-footer {
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
  border-top: 1px solid #1e3e30;
  color: #94a3b8;
  font-size: 0.9rem;
}

.main-footer a {
  color: #22c55e;
  margin: 0 5px;
}