/*
 * Mobile Nav Common
 * 规范入口：见 /public/mobile-common-guidelines.md
 * 抽离 5 个系统共享的移动端导航抽屉样式。
 */

.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  background: rgba(59,130,246,0.2);
  border: 1px solid rgba(59,130,246,0.4);
  border-radius: 8px;
  color: #e0e7ff;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.hamburger-btn:hover {
  background: rgba(59,130,246,0.35);
  border-color: rgba(59,130,246,0.6);
}

.hamburger-btn svg {
  width: 24px;
  height: 24px;
}

.nav-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  animation: nav-overlay-in 0.25s ease;
}

@keyframes nav-overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.nav-drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 75%;
  max-width: 320px;
  background: linear-gradient(180deg, rgba(15,23,42,0.98) 0%, rgba(30,41,59,0.98) 100%);
  border-left: 1px solid rgba(59,130,246,0.4);
  box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  z-index: 1001;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
}

.nav-drawer-panel .nav-drawer-links {
  flex: 1 1 0;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0;
}

.nav-drawer-panel.open {
  transform: translateX(0);
}

.nav-drawer-panel .nav-drawer-user {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  color: #94a3b8;
  font-size: 14px;
}

.nav-drawer-panel .nav-drawer-user strong {
  color: #e0e7ff;
}

.nav-drawer-panel a {
  display: block;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: #e0e7ff;
  font-size: 16px;
  text-decoration: none;
  min-height: 44px;
  box-sizing: border-box;
  transition: background 0.2s;
}

.nav-drawer-panel a:hover {
  background: rgba(59,130,246,0.15);
}

.nav-drawer-panel a.active {
  background: rgba(59,130,246,0.25);
  color: #93c5fd;
  font-weight: 600;
  border-left: 3px solid #60a5fa;
}

.nav-drawer-panel .nav-drawer-logout {
  display: block;
  width: 100%;
  padding: 14px 20px;
  margin-top: auto;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: none;
  background: linear-gradient(180deg, rgba(15,23,42,0.98) 0%, rgba(15,23,42,1) 100%);
  color: #f87171;
  font-size: 16px;
  text-align: left;
  cursor: pointer;
  min-height: 44px;
  box-sizing: border-box;
  transition: background 0.2s;
  position: static;
  z-index: auto;
  padding-bottom: 14px;
}

.nav-drawer-panel .nav-drawer-logout:hover {
  background: rgba(248,113,113,0.15);
}

@media (max-width: 768px) {
  .hamburger-btn { display: flex; }
  .nav-links-desktop { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-drawer-panel,
  .nav-drawer-overlay {
    transition: none;
  }
  .nav-drawer-overlay {
    animation: none;
  }
}

/* 移动端：顶栏 / 抽屉毛玻璃合成成本高，统一降级减轻发热与掉帧 */
@media (max-width: 900px) {
  #app nav.sticky {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  .nav-drawer-overlay {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}