/**
 * Dynamic Menu Styles
 * 动态菜单样式文件
 *
 * CSS Variables (可在配置中自定义):
 * --dm-brand-color: 品牌主色
 * --dm-bg-color: 背景颜色
 * --dm-text-color: 文字颜色
 * --dm-mobile-breakpoint: 移动端断点 (默认 768px)
 */

:root {
  --dm-brand-color: #E31837;
  --dm-bg-color: #ffffff;
  --dm-text-color: #333333;
  --dm-mobile-breakpoint: 768px;
}

/* ========== 基础菜单样式 ========== */
.dm-menu {
  width: 100%;
  background: var(--dm-bg-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.dm-menu.sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
}

.dm-menu.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.dm-menu.transparent {
  background: transparent;
  box-shadow: none;
}

.dm-menu.transparent.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.dm-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* ========== Logo 样式 ========== */
.dm-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--dm-text-color);
  font-size: 24px;
  font-weight: 700;
  transition: opacity 0.2s;
  flex-shrink: 0;
  margin-right: 30px;
}

.dm-logo:hover {
  opacity: 0.8;
}

.dm-logo img {
  height: 40px;
  width: auto;
}

/* ========== 导航菜单样式 ========== */
.dm-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: flex-start;
  margin-left: 20px;
}

.dm-nav-item {
  position: relative;
}

.dm-nav-link {
  display: block;
  padding: 10px 20px;
  color: var(--dm-text-color);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}

.dm-nav-link:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--dm-brand-color);
}

.dm-nav-link.active {
  background: var(--dm-brand-color);
  color: white;
}

/* ========== 下拉菜单样式 ========== */
.dm-dropdown {
  position: relative;
}

.dm-dropdown-toggle::after {
  content: '▼';
  font-size: 10px;
  margin-left: 6px;
  transition: transform 0.2s;
}

.dm-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s;
  margin-top: 8px;
  padding: 8px 0;
  z-index: 100;
}

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

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

.dm-dropdown-item {
  display: block;
  padding: 10px 20px;
  color: #333;
  text-decoration: none;
  font-size: 15px;
  transition: background 0.2s;
}

.dm-dropdown-item:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--dm-brand-color);
}

/* ========== 移动端汉堡按钮 ========== */
.dm-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--dm-text-color);
}

.dm-mobile-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: currentColor;
  margin: 5px 0;
  transition: all 0.3s;
  border-radius: 2px;
}

.dm-mobile-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.dm-mobile-toggle.open span:nth-child(2) {
  opacity: 0;
}

.dm-mobile-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ========== 搜索框样式 ========== */
.dm-search {
  position: relative;
  margin-left: 20px;
}

.dm-search-input {
  padding: 8px 35px 8px 15px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 20px;
  background: rgba(0, 0, 0, 0.03);
  color: var(--dm-text-color);
  font-size: 14px;
  width: 200px;
  transition: all 0.2s;
}

.dm-search-input:focus {
  outline: none;
  border-color: var(--dm-brand-color);
  width: 250px;
}

.dm-search-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--dm-text-color);
  opacity: 0.5;
}

/* ========== CTA 按钮样式 ========== */
.dm-cta-button {
  display: inline-block;
  padding: 10px 30px;
  margin-left: 20px;
  background: var(--dm-brand-color);
  color: white !important;
  text-decoration: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.dm-cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(227, 24, 55, 0.4);
  background: #c01530;
}

/* ========== 进入动画 ========== */
.dm-menu.animate .dm-nav-item {
  animation: fadeInUp 0.5s ease backwards;
}

.dm-menu.animate .dm-nav-item:nth-child(1) { animation-delay: 0.1s; }
.dm-menu.animate .dm-nav-item:nth-child(2) { animation-delay: 0.15s; }
.dm-menu.animate .dm-nav-item:nth-child(3) { animation-delay: 0.2s; }
.dm-menu.animate .dm-nav-item:nth-child(4) { animation-delay: 0.25s; }
.dm-menu.animate .dm-nav-item:nth-child(5) { animation-delay: 0.3s; }
.dm-menu.animate .dm-nav-item:nth-child(6) { animation-delay: 0.35s; }
.dm-menu.animate .dm-nav-item:nth-child(7) { animation-delay: 0.4s; }
.dm-menu.animate .dm-nav-item:nth-child(8) { animation-delay: 0.45s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 响应式设计 - 移动端 ========== */
@media (max-width: 768px) {
  .dm-container {
    height: 60px;
  }

  .dm-mobile-toggle {
    display: block;
  }

  .dm-nav {
    position: fixed;
    top: 60px;  /* 移动端菜单高度 */
    left: 0;
    right: 0;
    background: var(--dm-bg-color);
    flex-direction: column;
    gap: 0;
    padding: 0;
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    justify-content: flex-start;
    margin-left: 0;
  }

  .dm-nav.open {
    max-height: calc(100vh - 60px);  /* 移动端菜单高度 */
    overflow-y: auto;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .dm-nav-item {
    width: 100%;
  }

  .dm-nav-link {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
  }

  .dm-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(0, 0, 0, 0.03);
    margin: 8px 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .dm-dropdown.open .dm-dropdown-menu {
    max-height: 500px;
  }

  .dm-dropdown-toggle::after {
    float: right;
  }

  /* 移动端隐藏 CTA 按钮 */
  .dm-cta-button {
    display: none;
  }

  /* 移动端隐藏 Logo 文字 */
  .dm-logo-text {
    display: none;
  }
}

/* ========== 深色主题支持 ========== */
.dm-menu.theme-dark {
  --dm-bg-color: #1a1a1a;
  --dm-text-color: #ffffff;
}

.dm-menu.theme-dark .dm-nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.dm-menu.theme-dark .dm-dropdown-menu {
  background: #2a2a2a;
}

.dm-menu.theme-dark .dm-dropdown-item {
  color: #ffffff;
}

.dm-menu.theme-dark .dm-search-input {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

@media (max-width: 768px) {
  .dm-menu.theme-dark .dm-dropdown-menu {
    background: rgba(0, 0, 0, 0.1);
  }
}