/*
# navigation.css
# Written by: 广州羲驭科技有限公司
# Description: Styles for the navigation components.
# Copyright: © 2024-2025 广州羲驭科技有限公司. All rights reserved. | 粤ICP备2025458335号
*/

/* ===== Vista Geometric Glass 导航组件 ===== */

/* ===== 顶部导航栏 ===== */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--glass-layer-3);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-bottom: 1px solid var(--glass-border-light);
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-header::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%);
}

.nav-header.scrolled {
  background: var(--glass-layer-4);
  backdrop-filter: var(--glass-blur-max);
  box-shadow: var(--glass-shadow-medium);
}

/* 导航容器 */
.nav-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* Logo区域 */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: white;
  font-weight: var(--font-semibold);
  font-size: var(--text-xl);
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-logo:hover {
  color: var(--vista-glass-teal);
  text-shadow: var(--vista-glow-teal);
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--glass-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: white;
  box-shadow: var(--vista-glow-blue);
}

.nav-logo-image {
  height: 40px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-logo-image:hover {
  transform: scale(1.05);
  box-shadow: var(--vista-glow-teal);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .nav-logo-icon {
    width: 32px;
    height: 32px;
    font-size: var(--text-base);
  }

  .nav-logo-image {
    height: 32px;
  }
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--animation-medium) var(--ease-out-smooth);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--glass-primary);
  border-radius: var(--radius-full);
  transition: all var(--animation-medium) var(--ease-out-smooth);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--vista-glass-teal);
  background: var(--glass-layer-1);
  text-shadow: 0 0 10px rgba(0, 217, 199, 0.5);
}

.nav-link:hover::before {
  width: 80%;
}

.nav-link.active {
  color: var(--vista-glass-teal);
  background: var(--glass-layer-2);
}

.nav-link.active::before {
  width: 80%;
}

/* 下拉菜单 */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--space-2);
  min-width: 200px;
  background: var(--glass-layer-4);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border: 1px solid var(--glass-border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow-strong), var(--glass-inset-medium);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 20px;
  width: 10px;
  height: 10px;
  background: var(--glass-layer-4);
  border: 1px solid var(--glass-border-medium);
  border-bottom: none;
  border-right: none;
  transform: rotate(45deg);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: all var(--animation-fast) var(--ease-out-smooth);
  border-bottom: 1px solid var(--glass-border-lighter);
}

.nav-dropdown-item:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.nav-dropdown-item:last-child {
  border-bottom: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.nav-dropdown-item:hover {
  background: var(--glass-layer-5);
  color: var(--vista-glass-teal);
}

/* 导航按钮区域 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-cta {
  background: var(--glass-primary);
  border: 1px solid var(--glass-border-teal);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  transition: all var(--animation-medium) var(--ease-out-smooth);
  box-shadow: var(--vista-glow-teal);
}

.nav-cta:hover {
  background: var(--glass-layer-4);
  box-shadow: var(--glass-shadow-hover), 0 0 30px rgba(0, 217, 199, 0.6);
  transform: translateY(-2px);
}

/* ===== 移动端导航 ===== */
.nav-toggle {
  display: none;
  background: var(--glass-layer-3);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  cursor: pointer;
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-toggle:hover {
  background: var(--glass-layer-4);
  border-color: var(--glass-border-teal);
}

.nav-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  position: relative;
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: white;
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-toggle-icon::before {
  top: -8px;
}

.nav-toggle-icon::after {
  top: 8px;
}

.nav-toggle.active .nav-toggle-icon {
  background: transparent;
}

.nav-toggle.active .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.active .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* 移动端菜单 */
.nav-mobile {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--glass-layer-4);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-bottom: 1px solid var(--glass-border-light);
  max-height: calc(100vh - 70px);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

.nav-mobile.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-mobile-menu {
  list-style: none;
  margin: 0;
  padding: var(--space-4);
}

.nav-mobile-item {
  margin-bottom: var(--space-2);
}

.nav-mobile-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: all var(--animation-fast) var(--ease-out-smooth);
}

.nav-mobile-link:hover {
  background: var(--glass-layer-5);
  color: var(--vista-glass-teal);
}

.nav-mobile-actions {
  padding: var(--space-4);
  border-top: 1px solid var(--glass-border-lighter);
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  list-style: none;
  margin: 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
}

.breadcrumb-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--animation-fast) var(--ease-out-smooth);
}

.breadcrumb-link:hover {
  color: var(--vista-glass-teal);
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.4);
}

.breadcrumb-item:last-child {
  color: var(--vista-glass-teal);
  font-weight: var(--font-medium);
}

/* ===== 侧边导航 ===== */
.nav-sidebar {
  position: fixed;
  top: 0;
  left: -300px;
  width: 300px;
  height: 100vh;
  background: var(--glass-layer-4);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-right: 1px solid var(--glass-border-light);
  z-index: 60;
  transition: all var(--animation-medium) var(--ease-out-smooth);
  overflow-y: auto;
}

.nav-sidebar.active {
  left: 0;
  box-shadow: var(--glass-shadow-hover);
}

.nav-sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 55;
  opacity: 0;
  visibility: hidden;
  transition: all var(--animation-medium) var(--ease-out-smooth);
}

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

.nav-sidebar-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--glass-border-lighter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-sidebar-close {
  background: var(--glass-layer-3);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--radius-md);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--animation-fast) var(--ease-out-smooth);
}

.nav-sidebar-close:hover {
  background: var(--glass-layer-4);
  border-color: var(--glass-border-teal);
}

.nav-sidebar-menu {
  list-style: none;
  padding: var(--space-4);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--space-4);
  }

  .nav-menu {
    display: none;
  }

  .nav-actions {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-mobile {
    display: block;
  }

  .nav-logo {
    font-size: var(--text-lg);
  }

  .nav-logo-icon {
    width: 32px;
    height: 32px;
    font-size: var(--text-base);
  }
}

@media (max-width: 640px) {
  .nav-container {
    padding: 0 var(--space-3);
    height: 60px;
  }

  .nav-header.scrolled {
    height: 60px;
  }

  .nav-mobile {
    top: 60px;
    max-height: calc(100vh - 60px);
  }

  .nav-sidebar {
    width: 280px;
    left: -280px;
  }
}

/* ===== 可访问性增强 ===== */
@media (prefers-reduced-motion: reduce) {
  .nav-header,
  .nav-link,
  .nav-dropdown,
  .nav-toggle,
  .nav-mobile,
  .nav-sidebar {
    transition: none;
  }
}

/* 键盘导航焦点 */
.nav-link:focus,
.nav-cta:focus,
.nav-toggle:focus,
.nav-sidebar-close:focus {
  outline: 2px solid var(--glass-border-teal);
  outline-offset: 2px;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
  .nav-link,
  .nav-cta {
    border-width: 2px;
  }

  .nav-link:hover,
  .nav-cta:hover {
    border-width: 3px;
  }
}

/* ===== 特殊效果 ===== */
.nav-glow {
  position: relative;
}

.nav-glow::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 217, 199, 0.3), transparent);
  border-radius: var(--radius-md);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0);
  transition: all var(--animation-medium) var(--ease-out-smooth);
  pointer-events: none;
}

.nav-glow:hover::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.5);
}