header {
  background-color: #40276a;
  color: white;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
header .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid #fff;
}
.announcement {
  background: #fdf6d4;
  color: #222;
  padding: 8px 16px;
  text-align: center;
  font-weight: bold;
  font-size: 15px;
  position: relative;
}
.announcement button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 18px;
  color: #222;
  cursor: pointer;
}
.dropbtn {
  background-color: #ffffff11;
  color: white;
  padding: 8px 16px;
  font-size: 16px;
  border: 1px solid white;
  border-radius: 8px;
  cursor: pointer;
}
.menu-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.6);
}
.menu-modal-content {
  background-color: #fff;
  margin: auto;
  padding: 30px 20px;
  border: 1px solid #888;
  width: 90%;
  max-width: 400px;
  border-radius: 12px;
  text-align: right;
  font-family: 'Cairo', sans-serif;
}
.menu-modal-content a {
  display: block;
  margin: 10px 0;
  color: #333;
  text-decoration: none;
  font-size: 16px;
}
.menu-modal-content a i {
  margin-left: 8px;
}
.menu-modal-content hr {
  margin: 15px 0;
  border-top: 1px solid #ccc;
}
.close-btn {
  position: absolute;
  top: 15px;
  left: 20px;
  font-size: 24px;
  color: #333;
  cursor: pointer;
}

.menu-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.6);
}

.menu-modal-content {
  background-color: #fff;
  margin: auto;
  padding: 30px 20px;
  border: 1px solid #888;
  width: 90%;
  max-width: 400px;
  border-radius: 12px;
  text-align: right;
  font-family: 'Cairo', sans-serif;
}

.menu-modal-content a {
  display: block;
  margin: 10px 0;
  color: #333;
  text-decoration: none;
  font-size: 16px;
}

.menu-modal-content a i {
  margin-left: 8px;
}

.menu-modal-content hr {
  margin: 15px 0;
  border-top: 1px solid #ccc;
}

.close-btn {
  position: absolute;
  top: 15px;
  left: 20px;
  font-size: 24px;
  color: #333;
  cursor: pointer;
}