body {
  margin: 0;
  padding: 0;
  background-color: #0d0d0d;
  color: #ffffff;
  font-family: 'Segoe UI', sans-serif;
  overflow: hidden;
}

/* Кнопка меню */
.menu-toggle {
  position: fixed;
  top: 15px;
  left: 15px;
  z-index: 100;
  background: #00bfff;
  color: #fff;
  border: none;
  font-size: 24px;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  display: block;
}

/* Выдвигающееся меню */
.sidebar {
  position: fixed;
  top: 0;
  left: -260px;
  width: 240px;
  height: 100%;
  background-color: #111;
  padding: 60px 20px 20px;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.5);
  transition: left 0.3s ease;
  z-index: 90;
  overflow-y: auto;
}

.sidebar a {
  display: block;
  margin: 20px 0;
  color: #ccc;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.2s;
}

.sidebar a:hover {
  color: #00bfff;
}

.sidebar.active {
  left: 0;
}

/* Контент */
.container {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  text-align: center;
  padding: 20px;
  box-sizing: border-box;
}


.logo {
  width: 260px;
  margin-bottom: 20px;
  margin-top: -40px;
}

h1 {
  color: #1fa3cc;
  font-size: 36px;
  margin-bottom: 20px;
}

p {
  font-size: 18px;
  color: #ccc;
  max-width: 600px;
}

footer {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #444;
  font-size: 12px;
  z-index: 10;
  text-align: center;
}

.download-btn {
  margin-top: 40px;
  padding: 16px 36px;
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  background-color: #1fa3cc;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.3s;
  text-decoration: none;
  display: inline-block;
}

.download-btn:hover {
  background-color: #1689aa;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Мобильная адаптация */
@media (max-width: 768px) {
  body {
    font-size: 14px;
    overflow: auto;
  }

  .container {
    padding-top: 80px;
  }

  h1 {
    font-size: 24px;
  }

  p {
    font-size: 14px;
    padding: 0 10px;
  }

  .spinner {
    width: 40px;
    height: 40px;
    border-width: 4px;
  }

  canvas {
    display: none;
  }
}