/**
 * 昭通维崑信息技术 - 金融科技头部导航样式
 * @copyright 2024 昭通维崑信息技术有限责任公司
 */

/* ============================================
   CSS变量定义 - 金融科技色彩系统
   ============================================ */
:root {
  /* 主色: 科技蓝 */
  --primary-color: #0066cc;
  --primary-light: #4a90e2;
  --primary-dark: #0052a3;
  --primary-gradient: linear-gradient(135deg, #0066cc 0%, #004499 100%);

  /* 强调色: 活力橙 */
  --accent-color: #ff6b35;
  --accent-light: #ff8f6b;
  --accent-dark: #e55a2b;
  --accent-gradient: linear-gradient(135deg, #ff6b35 0%, #ff8f6b 100%);

  /* 辅色: 商务灰 */
  --secondary-color: #2c3e50;
  --secondary-light: #34495e;
  --secondary-dark: #1a252f;

  /* 中性色 */
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #e9ecef;
  --gray-200: #dee2e6;
  --gray-300: #ced4da;
  --gray-400: #adb5bd;
  --gray-500: #6c757d;
  --gray-600: #495057;
  --gray-700: #343a40;
  --gray-800: #212529;
  --black: #000000;

  /* 状态色 */
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --info: #3498db;

  /* 字体系统 */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "JetBrains Mono", Monaco, Consolas, monospace;

  /* 间距系统 */
  --spacing-1: 0.25rem; /* 4px */
  --spacing-2: 0.5rem; /* 8px */
  --spacing-3: 0.75rem; /* 12px */
  --spacing-4: 1rem; /* 16px */
  --spacing-5: 1.25rem; /* 20px */
  --spacing-6: 1.5rem; /* 24px */
  --spacing-8: 2rem; /* 32px */
  --spacing-10: 2.5rem; /* 40px */
  --spacing-12: 3rem; /* 48px */
  --spacing-16: 4rem; /* 64px */

  /* 圆角系统 */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* 阴影系统 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* 动画 */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* 断点 */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1200px;
}

/* ============================================
   顶部信息栏 - 金融科技风格
   ============================================ */
.fintech-topbar {
  background: var(--primary-gradient);
  color: var(--white);
  padding: 12px 0;
  font-size: 0.875rem;
  position: relative;
  overflow: hidden;
}

.fintech-topbar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.topbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.topbar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.topbar-item i {
  font-size: 0.75rem;
  opacity: 0.9;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.topbar-link {
  color: var(--white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 1;
}

.topbar-link:hover {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.topbar-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--white);
  transition: width var(--transition-fast);
}

.topbar-link:hover::after {
  width: 100%;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.social-link {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 1;
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

/* ============================================
   主导航 - 金融科技专业导航
   ============================================ */
.fintech-header {
  background: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.fintech-header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  position: relative;
}

/* Logo - 金融科技风格 */
.fintech-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

.logo-icon {
  width: 48px;
  height: 48px;
  position: relative;
}

.logo-shape {
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

.logo-shape::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  height: 60%;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.logo-shape::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
  height: 30%;
  background: var(--white);
  border-radius: 50%;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary-dark);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--gray-500);
  line-height: 1.2;
  font-weight: 400;
}

/* 桌面端导航菜单 */
.fintech-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  color: var(--secondary-color);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 12px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(0, 102, 204, 0.1) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-color);
  background: rgba(0, 102, 204, 0.05);
}

.nav-link:hover::before {
  opacity: 1;
}

.nav-link.active {
  color: var(--primary-color);
  background: rgba(0, 102, 204, 0.1);
}

.nav-link.active::before {
  opacity: 1;
}

.nav-link i {
  font-size: 1rem;
  transition: transform var(--transition-fast);
}

.nav-link:hover i {
  transform: scale(1.1);
}

/* 下拉菜单 - 金融科技风格 */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle::after {
  content: "\f107";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  margin-left: 4px;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 0, 0, 0.05);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  list-style: none;
  margin: 8px 0 0 0;
  padding: 8px;
  z-index: 1001;
}

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

.nav-dropdown-item {
  margin: 0;
}

.nav-dropdown-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  color: var(--secondary-color);
  text-decoration: none;
  border-radius: 12px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-dropdown-link:hover {
  background: rgba(0, 102, 204, 0.05);
  color: var(--primary-color);
}

.dropdown-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(0, 102, 204, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--primary-color);
  flex-shrink: 0;
}

.dropdown-content {
  flex: 1;
}

.dropdown-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--secondary-dark);
  margin-bottom: 4px;
}

.dropdown-desc {
  display: block;
  font-size: 0.8125rem;
  color: var(--gray-500);
  line-height: 1.4;
}

/* CTA按钮 */
.header-cta {
  margin-left: 16px;
}

.header-cta .btn {
  padding: 12px 24px;
  font-size: 0.875rem;
  font-weight: 500;
}

/* ============================================
   移动端菜单按钮 - 汉堡菜单
   ============================================ */
.mobile-menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  padding: 12px;
  cursor: pointer;
  position: relative;
  border-radius: 12px;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: rgba(0, 102, 204, 0.05);
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--secondary-color);
  margin: 4px 0;
  transition: all var(--transition-fast);
  border-radius: 1px;
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* 移动端菜单 - 金融科技抽屉式菜单 */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  z-index: 1999;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

.fintech-mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: -100%;
  width: 80%;
  max-width: 380px;
  height: 100vh;
  background: var(--white);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
  transition: left var(--transition-normal);
  z-index: 2000;
  overflow-y: auto;
  overflow-x: hidden;
}

.fintech-mobile-menu.active {
  left: 0;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.mobile-menu-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--secondary-color);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.mobile-menu-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--primary-color);
}

.mobile-nav {
  list-style: none;
  margin: 0;
  padding: 16px 0;
}

.mobile-nav-item {
  margin: 0;
  border-bottom: 1px solid var(--gray-100);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  color: var(--secondary-color);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--primary-color);
  background: rgba(0, 102, 204, 0.05);
}

.mobile-nav-link i {
  width: 20px;
  text-align: center;
  font-size: 1.125rem;
}

.mobile-dropdown-toggle {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--secondary-color);
  padding: 16px 20px;
  transition: all var(--transition-fast);
}

.mobile-dropdown-toggle:hover {
  background: rgba(0, 102, 204, 0.05);
}

.mobile-dropdown-toggle.active {
  color: var(--primary-color);
}

.dropdown-icon {
  transition: transform var(--transition-fast);
  font-size: 0.875rem;
}

.mobile-dropdown-toggle.active .dropdown-icon {
  transform: rotate(180deg);
}

.mobile-nav-dropdown {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  background: rgba(0, 102, 204, 0.02);
}

.mobile-nav-dropdown-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px 12px 52px;
  color: var(--gray-600);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.mobile-nav-dropdown-link:hover {
  color: var(--primary-color);
  background: rgba(0, 102, 204, 0.05);
}

.mobile-nav-dropdown-link i {
  width: 16px;
  text-align: center;
  font-size: 0.875rem;
}

.mobile-menu-footer {
  padding: 24px 20px;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.mobile-contact-info {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
}

.mobile-contact-info p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.mobile-contact-info i {
  width: 16px;
  text-align: center;
  color: var(--primary-color);
}

/* ============================================
   响应式设计 - 头部导航移动端适配
   ============================================ */
@media (max-width: 1199px) {
  .nav-link {
    padding: 10px 16px;
    font-size: 0.875rem;
  }

  .logo-title {
    font-size: 1.125rem;
  }

  .header-cta {
    margin-left: 12px;
  }
}

@media (max-width: 991px) {
  .fintech-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .header-cta {
    display: none;
  }

  .topbar-content {
    justify-content: center;
    text-align: center;
  }

  .topbar-left,
  .topbar-right {
    justify-content: center;
  }

  .topbar-right {
    margin-top: 8px;
  }

  .social-links {
    gap: 8px;
  }

  .social-link {
    width: 28px;
    height: 28px;
    font-size: 0.875rem;
  }
}

@media (max-width: 767px) {
  .header-content {
    padding: 12px 0;
  }

  .logo-icon {
    width: 40px;
    height: 40px;
  }

  .logo-title {
    font-size: 1.125rem;
  }

  .logo-subtitle {
    display: none;
  }

  .mobile-menu-toggle {
    width: 40px;
    height: 40px;
    padding: 8px;
  }

  .hamburger-line {
    width: 20px;
    margin: 3px 0;
  }

  .fintech-mobile-menu {
    width: 85%;
  }

  .mobile-menu-header {
    padding: 16px;
  }

  .mobile-nav-link,
  .mobile-dropdown-toggle {
    padding: 12px 16px;
    font-size: 0.9375rem;
  }

  .mobile-nav-dropdown-link {
    padding: 10px 16px 10px 44px;
    font-size: 0.875rem;
  }

  .mobile-menu-footer {
    padding: 20px 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }

  .topbar {
    font-size: 0.75rem;
    padding: 8px 0;
  }

  .topbar-left {
    gap: 16px;
  }

  .topbar-right {
    gap: 16px;
  }

  .topbar-item {
    gap: 6px;
  }

  .topbar-link {
    gap: 4px;
  }

  .mobile-menu-header {
    padding: 12px 16px;
  }

  .mobile-nav-link,
  .mobile-dropdown-toggle {
    padding: 10px 16px;
    font-size: 0.875rem;
  }

  .mobile-nav-dropdown-link {
    padding: 8px 16px 8px 40px;
    font-size: 0.8125rem;
  }

  .mobile-menu-footer {
    padding: 16px;
  }

  .mobile-contact-info p {
    font-size: 0.75rem;
  }
}

/* 横屏模式适配 */
@media (max-width: 767px) and (orientation: landscape) {
  .fintech-mobile-menu {
    width: 50%;
  }

  .mobile-nav-link,
  .mobile-dropdown-toggle {
    padding: 8px 16px;
  }

  .mobile-nav-dropdown-link {
    padding: 6px 16px 6px 44px;
  }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  .fintech-topbar::before,
  .nav-link::before,
  .nav-dropdown-menu,
  .fintech-mobile-menu,
  .mobile-nav-dropdown {
    transition: none;
  }

  .hero-particles::before,
  .hero-particles::after {
    animation: none;
  }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
  .nav-link {
    border: 1px solid transparent;
  }

  .nav-link.active {
    border-color: var(--primary-color);
  }

  .nav-dropdown-menu {
    border: 2px solid var(--primary-color);
  }

  .mobile-menu-toggle {
    border: 2px solid var(--secondary-color);
  }

  .mobile-menu-toggle:hover {
    border-color: var(--primary-color);
  }
}

/* 暗色模式支持（未来扩展） */
@media (prefers-color-scheme: dark) {
  .fintech-header {
    background: var(--secondary-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .logo-title {
    color: var(--white);
  }

  .nav-link {
    color: rgba(255, 255, 255, 0.9);
  }

  .nav-link:hover {
    color: var(--primary-light);
    background: rgba(255, 255, 255, 0.05);
  }

  .nav-link.active {
    color: var(--primary-light);
    background: rgba(0, 102, 204, 0.2);
  }

  .fintech-mobile-menu {
    background: var(--secondary-dark);
    color: rgba(255, 255, 255, 0.9);
  }

  .mobile-menu-header {
    background: var(--secondary-color);
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }

  .mobile-nav-link,
  .mobile-dropdown-toggle {
    color: rgba(255, 255, 255, 0.9);
  }

  .mobile-nav-link:hover,
  .mobile-dropdown-toggle:hover {
    color: var(--primary-light);
    background: rgba(255, 255, 255, 0.05);
  }

  .mobile-nav-dropdown {
    background: rgba(255, 255, 255, 0.05);
  }

  .mobile-nav-dropdown-link {
    color: rgba(255, 255, 255, 0.7);
  }

  .mobile-nav-dropdown-link:hover {
    color: var(--primary-light);
  }

  .mobile-menu-footer {
    background: var(--secondary-color);
    border-top-color: rgba(255, 255, 255, 0.1);
  }
}