.sidebar {
  width: 280px;
  background: linear-gradient(to bottom, var(--color-white), var(--color-bg-light));
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.04);
  position: fixed;
  z-index: 10;
  height: 90vh;
}

.is-standalone-app .sidebar {
  height: 100dvh;
  border-right: 1px solid color-mix(in srgb, var(--color-border) 88%, transparent);
  box-shadow: none;
}

.is-standalone-app .sidebar-header {
  padding-top: max(18px, env(safe-area-inset-top));
}

.is-standalone-app .sidebar-nav {
  padding-top: 14px;
  padding-bottom: max(16px, env(safe-area-inset-bottom));
}

.is-standalone-app .sidebar-footer {
  padding-bottom: max(16px, env(safe-area-inset-bottom));
}

.sidebar-header {
  padding: 20px 16px;
  display: none;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.logo-container:hover { transform: scale(1.02); }

.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  overflow-y: auto;
}

.nav-section { margin-bottom: 28px; }
.nav-section:last-child { margin-bottom: 0; }

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-text-light);
  padding: 0 12px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-section-title::before {
  content: "";
  width: 3px;
  height: 12px;
  background: linear-gradient(135deg, #10b981 0%, var(--color-primary) 100%);
  border-radius: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  margin-bottom: 4px;
  position: relative;
  overflow: hidden;
  animation: sidebarSlideIn 0.3s ease backwards;
}

.nav-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(135deg, #10b981 0%, var(--color-primary) 100%);
  transform: translateX(-3px);
  transition: transform 0.2s ease;
}

.nav-item:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-dark);
  transform: translateX(4px);
}

.nav-item:hover::before { transform: translateX(0); }

.nav-item.active {
  background: linear-gradient(135deg, #10b981 0%, var(--color-primary) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-green);
  transform: translateX(4px);
}

.nav-item.active::before {
  transform: translateX(0);
  background: rgba(255, 255, 255, 0.3);
}

.nav-item i {
  font-size: 18px;
  width: 20px;
  text-align: center;
  transition: transform 0.2s ease;
}

.nav-item:hover i,
.nav-item.active i { transform: scale(1.1); }

.nav-item-badge {
  margin-left: auto;
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-danger-start);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 20px;
  border: 1px solid rgba(239, 68, 68, 0.2);
  transition: all 0.2s ease;
}

.nav-item:hover .nav-item-badge {
  background: rgba(239, 68, 68, 0.15);
  transform: scale(1.05);
}

.nav-item.active .nav-item-badge {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
}

.nav-item-disabled {
  cursor: not-allowed;
  opacity: 0.5;
  pointer-events: none;
  filter: grayscale(0.7);
}

.nav-item-disabled:hover {
  background: transparent;
  transform: none;
}

.nav-item-badge-pro {
  margin-left: auto;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: var(--color-white);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
  letter-spacing: 0.5px;
  animation: sidebarPulsePro 2s ease-in-out infinite;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
}

.logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-danger-end);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.logout-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-danger-start) 0%, var(--color-danger-end) 100%);
  transform: translateY(100%);
  transition: transform 0.2s ease;
}

.logout-btn span,
.logout-btn i {
  position: relative;
  z-index: 1;
  transition: color 0.2s ease;
}

.logout-btn:hover {
  border-color: var(--color-danger-end);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(220, 38, 38, 0.25);
}

.logout-btn:hover::before { transform: translateY(0); }
.logout-btn:hover span,
.logout-btn:hover i { color: var(--color-white); }
.logout-btn:active { transform: translateY(0); }

.sidebar-nav::-webkit-scrollbar { width: 6px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; margin: 8px 0; }

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 10px;
  transition: background 0.2s ease;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

.nav-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-border), transparent);
  margin: 20px 12px;
}

@keyframes sidebarSlideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes sidebarPulsePro {
  0%, 100% { box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3); }
  50% { box-shadow: 0 4px 12px rgba(245, 158, 11, 0.5); }
}

.nav-section:nth-child(1) .nav-item:nth-child(2) { animation-delay: 0.05s; }
.nav-section:nth-child(1) .nav-item:nth-child(3) { animation-delay: 0.1s; }
.nav-section:nth-child(1) .nav-item:nth-child(4) { animation-delay: 0.15s; }
.nav-section:nth-child(1) .nav-item:nth-child(5) { animation-delay: 0.2s; }

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 999;
    box-shadow: none;
    transform: translate3d(-100%, 0, 0);
    transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.24s ease;
    will-change: transform;
    backface-visibility: hidden;
  }

  .is-standalone-app .sidebar {
    width: min(86vw, 300px);
    height: 100dvh;
    transform: translate3d(-100%, 0, 0);
  }

  .sidebar-header { display: block; }

  .sidebar.open {
    transform: translate3d(0, 0, 0);
    box-shadow: 8px 0 32px rgba(0, 0, 0, 0.15);
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.2s ease;
  }

  .sidebar-backdrop.active {
    display: block;
    opacity: 1;
  }
}