.sidebar {
  width: 220px;
  min-height: 100vh;
  background: linear-gradient(to bottom right, rgba(38, 42, 50, 0.75), rgba(20, 22, 28, 0.7));
  backdrop-filter: blur(12px);
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  border-right: 1px solid rgba(255,255,255,0.05);
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  transition: transform var(--transition-speed);
}

.sidebar h2 {
  font-size: 1.4rem;
  margin-bottom: 30px;
  color: var(--text-primary);
  text-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .sidebar h2 {
  color: #000;
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: all var(--transition-speed);
  font-size: 0.95rem;
  padding: 10px 12px;
}

.sidebar a i {
  color: var(--highlight);
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

.sidebar a:hover {
  background-color: rgba(0, 191, 255, 0.1);
  color: var(--text-primary);
}

.sidebar a.active {
  color: var(--text-primary);
  background-color: rgba(0, 191, 255, 0.08);
  outline: 1.5px solid var(--highlight);
  box-shadow: 0 0 8px var(--highlight);
}

/* === SIDEBAR TOGGLE (MOBILE) === */
#sidebar-toggle {
  background: none;
  border: none;
  color: var(--highlight);
  font-size: 1.4rem;
  cursor: pointer;
  display: none;
}

@media (max-width: 768px) {
  #sidebar-toggle { display: inline; }
  .sidebar { transform: translateX(-100%); box-shadow: none; }
  .sidebar.open { transform: translateX(0%); }
}