body {
  background-color: #f8f9fa;
  transition: background 0.3s ease;
}

.dark-mode {
  background-color: #0d1117;
  color: #f0f0f0;
}

.dark-mode .card {
  background-color: #161b22;
  color: #f0f0f0;
}

.dark-mode .bg-light {
  background-color: #1c1f26 !important;
  color: #ddd;
}

.dark-mode .nav-link {
  color: #ccc !important;
}

.sidebar {
  width: 240px;
  min-height: 100vh;
  transition: left 0.3s ease;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -240px;
    top: 0;
    background-color: #111;
    z-index: 999;
  }

  .sidebar.show {
    left: 0;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .menu-toggle {
    position: fixed;
    top: 15px;
    left: 15px;
    background: #6f4ef2;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    z-index: 1001;
  }
}

.menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
}

.floating-support {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #6f4ef2;
  color: white;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  z-index: 1000;
}

.floating-support:hover {
  background: #553ee0;
}