body {
  margin: 0;
  padding: 0;
  font-family: 'Cairo', Arial, sans-serif;
  background: linear-gradient(135deg, #e9e9f1 0%, #f6f7fa 100%);
  color: #222;
}

.sidebar {
  width: 320px;
  min-height: 100vh;
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(14px) saturate(150%);
  box-shadow: 0 4px 32px 0 rgba(60, 60, 100, 0.08);
  padding: 32px 18px 80px 18px;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.logo {
  font-size: 2.2rem;
  font-weight: 800;
  color: #5e50fa;
  letter-spacing: 2px;
  margin-bottom: 32px;
  text-align: center;
  font-family: 'Cairo', Arial, sans-serif;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

nav li {
  margin: 7px 0;
}

.section-title {
  font-size: 1.07rem;
  font-weight: 800;
  color: #999;
  margin: 22px 0 7px 0;
  padding-top: 8px;
  border-top: 1px solid #eee;
}

.sub-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: #6a7cff;
  margin: 15px 0 2px 0;
  letter-spacing: 1px;
  padding-right: 12px;
}

.sub-list {
  margin-right: 18px;
}

.sub-list li a {
  font-size: 0.98rem;
  font-weight: 500;
  color: #446ae4;
  letter-spacing: 0.3px;
  border-right: 2.5px solid #e6e7f6;
  padding-right: 12px;
}

nav li a {
  text-decoration: none;
  color: #2b2d36;
  font-size: 1.09rem;
  font-weight: 700;
  transition: 0.14s;
  border-radius: 6px;
  padding: 6px 12px;
  display: block;
}

nav li a:hover {
  background: linear-gradient(90deg, #e3e7fe 0%, #d4e0fd 100%);
  color: #3b51c8;
}

.logout {
  margin-top: 26px;
  text-align: center;
  position: absolute;
  bottom: 20px;
  width: 90%;
  right: 5%;
}

.logout a {
  background: linear-gradient(90deg, #ff6e72 0%, #a469f5 100%);
  color: #fff;
  font-weight: 700;
  border-radius: 7px;
  padding: 12px 30px;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 2px 14px 0 rgba(160, 90, 255, 0.11);
  font-size: 1.11rem;
  transition: 0.13s;
}

.logout a:hover {
  opacity: 0.8;
}

.main-content {
  margin-right: 340px;
  padding: 60px 40px;
}

@media (max-width: 900px) {
  .sidebar {
    width: 100vw;
    position: static;
    min-height: unset;
    flex-direction: row;
    padding: 8px;
    overflow-x: auto;
  }
  .main-content {
    margin-right: 0;
    padding: 50px 6vw;
  }
}