body {
  margin: 0;
  font-family: Tahoma, sans-serif;
  background-color: #f9f9f9;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.header {
  background-color: #fff;
  padding: 20px 0;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
.logo {
  max-width: 200px;
  height: auto;
}
.main-content {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 30px 10px;
}
.flipbook-container {
  max-width: 100%;
  width: 1200px;
  margin: auto;
}
#flipbook {
  width: 1200px;
  height: 600px;
  direction: rtl;
}
.page {
  width: 600px;
  height: 600px;
  background: white;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.2);
}
.footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 15px;
  font-size: 14px;
}


.flipbook-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.nav-btn {
  background-color: #0099ff;
  color: white;
  border: none;
  padding: 12px 18px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
}

.nav-btn:hover {
  background-color: #007acc;
}