/* navbar.css - 悬浮按钮菜单栏样式 */

/* 悬浮菜单按钮 */
.floating-menu-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  outline: none;
}

.floating-menu-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.floating-menu-btn:active {
  transform: scale(0.95);
}

.floating-menu-btn .menu-icon {
  position: relative;
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.floating-menu-btn.active .menu-icon {
  transform: rotate(45deg);
}

.floating-menu-btn .menu-icon span {
  position: absolute;
  width: 100%;
  height: 2px;
  background: white;
  border-radius: 1px;
  transition: all 0.3s ease;
  left: 0;
}

.floating-menu-btn .menu-icon span:nth-child(1) {
  top: 4px;
}

.floating-menu-btn .menu-icon span:nth-child(2) {
  top: 9px;
  opacity: 1;
}

.floating-menu-btn .menu-icon span:nth-child(3) {
  top: 14px;
}

.floating-menu-btn.active .menu-icon span:nth-child(1) {
  transform: rotate(45deg);
  top: 9px;
}

.floating-menu-btn.active .menu-icon span:nth-child(2) {
  opacity: 0;
  transform: translateX(-20px);
}

.floating-menu-btn.active .menu-icon span:nth-child(3) {
  transform: rotate(-45deg);
  top: 9px;
}

/* 菜单遮罩层 */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(2px);
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* 悬浮菜单内容 */
.floating-menu {
  position: fixed;
  top: 85px;
  right: 20px;
  width: 260px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transform-origin: top right;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.floating-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.floating-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  right: 20px;
  width: 16px;
  height: 16px;
  background: white;
  transform: rotate(45deg);
  box-shadow: -4px -4px 10px rgba(0, 0, 0, 0.04);
}

.menu-header {
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.menu-header h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.4;
}

.menu-header p {
  margin: 5px 0 0 0;
  font-size: 0.85rem;
  opacity: 0.9;
  line-height: 1.4;
}

.menu-body {
  padding: 15px 0;
}

.menu-item {
  display: block;
  padding: 12px 20px;
  color: #525f7f;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  border-left: 3px solid transparent;
  font-size: 0.95rem;
  line-height: 1.4;
}

.menu-item:hover {
  background: rgba(94, 114, 228, 0.05);
  color: #5e72e4;
  padding-left: 25px;
  border-left-color: #5e72e4;
}

.menu-item::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: #5e72e4;
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
}

.menu-item:hover::before {
  opacity: 1;
  left: 15px;
}

.menu-item.active {
  background: rgba(94, 114, 228, 0.1);
  color: #5e72e4;
  border-left-color: #5e72e4;
}

.menu-divider {
  height: 1px;
  background: #e9ecef;
  margin: 10px 20px;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .floating-menu-btn {
    top: 15px;
    right: 15px;
    width: 46px;
    height: 46px;
  }
  
  .floating-menu {
    top: 75px;
    right: 15px;
    width: calc(100vw - 30px);
    max-width: 280px;
  }
  
  .floating-menu::before {
    right: 15px;
  }
  
  .menu-header {
    padding: 15px 20px;
  }
  
  .menu-header h3 {
    font-size: 1.1rem;
  }
  
  .menu-header p {
    font-size: 0.8rem;
  }
  
  .menu-item {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

/* 动画延迟（菜单项依次出现） */
.menu-item {
  opacity: 0;
  transform: translateX(10px);
  animation: menuItemFadeOut 0.3s ease forwards;
}

.floating-menu.active .menu-item {
  animation: menuItemFadeIn 0.3s ease forwards;
}

.floating-menu.active .menu-item:nth-child(1) { animation-delay: 0.1s; }
.floating-menu.active .menu-item:nth-child(2) { animation-delay: 0.15s; }
.floating-menu.active .menu-item:nth-child(3) { animation-delay: 0.2s; }
.floating-menu.active .menu-item:nth-child(4) { animation-delay: 0.25s; }
.floating-menu.active .menu-item:nth-child(5) { animation-delay: 0.3s; }
.floating-menu.active .menu-item:nth-child(6) { animation-delay: 0.35s; }

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

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