.desktop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(
      1200px circle at 10% 10%,
      rgba(110, 168, 255, 0.35),
      transparent 55%
    ),
    radial-gradient(
      900px circle at 85% 20%,
      rgba(255, 135, 215, 0.28),
      transparent 60%
    ),
    radial-gradient(
      1000px circle at 40% 110%,
      rgba(71, 255, 209, 0.18),
      transparent 55%
    ),
    linear-gradient(135deg, #0b1020 0%, #0e1b3e 55%, #140a2d 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
  z-index: var(--z-desktop);
}

.mobile-locked #desktop,
.mobile-locked #taskbar {
  filter: blur(10px);
}

.mobile-locked {
  overflow: hidden;
}

.mobile-gate {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  z-index: calc(var(--z-context-menu) + 10);
  background: rgba(6, 10, 24, 0.72);
  backdrop-filter: blur(10px);
}

.mobile-gate.hidden {
  display: none;
}

.mobile-gate-card {
  width: min(520px, 100%);
  border-radius: 18px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  box-shadow: 0 18px 55px var(--shadow-heavy);
  padding: 18px;
}

.mobile-gate-title {
  font-size: 1.05rem;
  font-weight: 720;
  color: var(--primary-text);
  margin-bottom: 8px;
}

.mobile-gate-text {
  font-size: 0.95rem;
  color: var(--secondary-text);
  line-height: 1.5;
}

.mobile-gate-actions {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
}

.mobile-gate-button {
  height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  font-weight: 650;
  color: var(--primary-text);
  background: rgba(110, 168, 255, 0.22);
  border: 1px solid rgba(110, 168, 255, 0.32);
  transition: transform var(--transition-fast),
    background-color var(--transition-fast);
}

.mobile-gate-button:hover {
  transform: translateY(-1px);
  background: rgba(110, 168, 255, 0.28);
}

.ui-icon {
  width: 18px;
  height: 18px;
  display: block;
}

.desktop::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
      1200px circle at 20% 30%,
      rgba(255, 255, 255, 0.06),
      transparent 60%
    ),
    radial-gradient(
      900px circle at 70% 60%,
      rgba(255, 255, 255, 0.04),
      transparent 60%
    );
  opacity: 0.8;
}

.desktop-icons {
  display: grid;
  grid-template-columns: repeat(auto-fill, 80px);
  grid-auto-rows: 100px;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  pointer-events: none;
}

.windows-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.windows-container > * {
  pointer-events: auto;
}

.taskbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: transparent;
  display: flex;
  align-items: center;
  padding: 12px 16px;
  z-index: var(--z-taskbar);
}

.taskbar-inner {
  height: 48px;
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border-radius: 16px;
  background: var(--taskbar-bg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 35px var(--shadow-heavy);
  backdrop-filter: blur(var(--glass-blur));
}

.taskbar-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 1;
}

/* Start Button */
.start-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--taskbar-text);
  font-weight: 700;
  letter-spacing: 0.4px;
  transition: transform var(--transition-fast),
    background-color var(--transition-fast);
}

.start-button:hover {
  background-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.start-button.active {
  background-color: rgba(110, 168, 255, 0.22);
  border-color: rgba(110, 168, 255, 0.32);
}

.start-icon {
  font-size: 0.95rem;
  line-height: 1;
}

.start-text {
  display: none;
}

/* Start Menu */
.start-menu {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 78px;
  width: min(520px, calc(100vw - 32px));
  max-height: min(560px, calc(100vh - 110px));
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: 0 18px 55px var(--shadow-heavy);
  backdrop-filter: blur(var(--glass-blur));
  overflow: hidden;
  animation: slideUp var(--transition-normal);
}

.start-menu-header {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.start-menu-header h3 {
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--primary-text);
  letter-spacing: 0.2px;
}

.start-menu-apps {
  padding: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.app-launcher {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 12px;
  background-color: transparent;
  border-radius: 14px;
  text-align: left;
  transition: background-color var(--transition-fast),
    transform var(--transition-fast);
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.app-launcher:hover {
  background-color: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.app-launcher .app-icon {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 0.95rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  line-height: 1;
}

.app-icon--terminal {
  background: rgba(110, 168, 255, 0.18);
  border-color: rgba(110, 168, 255, 0.28);
}

.app-icon--files {
  background: rgba(71, 255, 209, 0.14);
  border-color: rgba(71, 255, 209, 0.22);
}

.app-icon--monitor {
  background: rgba(255, 135, 215, 0.14);
  border-color: rgba(255, 135, 215, 0.22);
}

.app-icon--settings {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.18);
}

.app-launcher .app-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-text);
}

/* Taskbar Items (Open Windows) */
.taskbar-items {
  display: flex;
  gap: 6px;
  flex: 0 1 auto;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0;
  max-width: min(760px, calc(100vw - 260px));
}

.taskbar-items::-webkit-scrollbar {
  height: 4px;
}

.taskbar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--taskbar-text);
  border-radius: 12px;
  font-size: 0.85rem;
  white-space: nowrap;
  min-width: 140px;
  max-width: 240px;
  transition: background-color var(--transition-fast),
    transform var(--transition-fast);
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.taskbar-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.taskbar-item.active {
  background-color: rgba(110, 168, 255, 0.18);
  border-color: rgba(110, 168, 255, 0.28);
}

.taskbar-item.minimized {
  opacity: 0.7;
}

.taskbar-item-icon {
  width: 26px;
  height: 26px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  line-height: 1;
}

.taskbar-item-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.taskbar-item-close {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.7rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.taskbar-item:hover .taskbar-item-close {
  opacity: 1;
}

.taskbar-item-close:hover {
  background-color: var(--error-color);
}

/* System Tray */
.system-tray {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 0 8px;
  color: var(--taskbar-text);
}

.clock {
  font-size: 0.9rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* ==================== CONTEXT MENU ==================== */
.context-menu {
  position: absolute;
  min-width: 200px;
  background-color: var(--window-bg);
  border: 1px solid var(--window-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px var(--shadow-medium);
  padding: var(--spacing-xs);
  z-index: var(--z-context-menu);
  animation: fadeIn var(--transition-fast);
}

.context-menu-list {
  list-style: none;
}

.context-menu-item {
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--primary-text);
  transition: background-color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.context-menu-item:hover {
  background-color: var(--titlebar-hover);
}

.context-menu-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.context-menu-item.disabled:hover {
  background-color: transparent;
}

.context-menu-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: var(--spacing-xs) 0;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
  .taskbar {
    height: 72px;
  }

  .desktop {
    bottom: 72px;
  }

  .taskbar-item-title {
    max-width: 100px;
  }

  .taskbar-items {
    max-width: min(520px, calc(100vw - 170px));
  }
}