/* ============================================================
 * emerald 主题 - 公共组件样式（导航 / 按钮 / 页脚 / 悬浮窗）
 * ============================================================ */

/* ============ 布局容器 ============ */
.em-container { width: 1200px; max-width: 92%; margin: 0 auto; }

/* ============ 按钮 ============ */
.em-btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 18px;
  border: 1px solid transparent; border-radius: var(--em-radius);
  font-size: 14px; line-height: 1; cursor: pointer; white-space: nowrap;
  transition: background .2s, border-color .2s, color .2s;
}
.em-btn-primary { background: var(--em-primary); border-color: var(--em-primary); color: #fff; }
.em-btn-primary:hover { background: var(--em-primary-hover); border-color: var(--em-primary-hover); }
.em-btn-text { padding: 0 10px; color: var(--em-ink-2); }
.em-btn-text:hover { color: var(--em-primary); }
/* 通用按钮变体 */
.em-btn-lg { height: 44px; padding: 0 28px; font-size: 15px; }
.em-btn-block { width: 100%; }
.em-btn-outline-primary { background: #fff; border-color: var(--em-primary); color: var(--em-primary); }
.em-btn-outline-primary:hover { background: var(--em-primary); color: #fff; }
.em-btn-ghost { background: transparent; border-color: rgba(255, 255, 255, .4); color: #fff; }
.em-btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .6); }
.em-btn-white { background: #fff; border-color: #fff; color: var(--em-primary); }
.em-btn-white:hover { background: rgba(255, 255, 255, .88); }
/* 控制台按钮：无边框，实底导航下为主色文字，透明导航下为白色文字 */
.em-btn-console { border-color: transparent; color: var(--em-primary); }
.em-btn-console:hover { background: var(--em-primary-bg); color: var(--em-primary); border-color: transparent; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-btn-console { border-color: transparent; color: #fff; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-btn-console:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-btn-text { color: rgba(255, 255, 255, .85); }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-btn-text:hover { color: #fff; }

/* ============ 顶部导航 ============ */
.em-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--em-nav-h);
  background: #fff; border-bottom: 1px solid var(--em-line);
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.em-nav-inner { height: var(--em-nav-h); display: flex; align-items: center; }
/* 透明态（仅 body[data-nav="transparent"] 页面生效） */
.em-nav.nav-transparent { background: transparent; border-color: transparent; }
.em-nav.nav-transparent.scrolled { background: #fff; border-color: var(--em-line); box-shadow: 0 2px 12px rgba(23, 33, 31, .06); }
/* 二级面板展开时，透明导航同步切为白底深色字，避免面板与文字同色 */
.em-nav.nav-transparent.menu-open { background: #fff; border-color: var(--em-line); box-shadow: 0 2px 12px rgba(23, 33, 31, .06); }

.em-nav-logo { flex-shrink: 0; margin-right: 48px; }
.em-nav-logo a { display: block; }
.em-nav-logo img { display: block; height: 32px; width: auto; }
.em-nav-logo .em-logo-light { display: none; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-logo .em-logo-dark { display: none; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-logo .em-logo-light { display: block; }

/* 菜单 */
.em-nav-menu { display: flex; align-items: center; flex: 1; }
.em-nav-item { position: relative; }
.em-nav-link {
  display: block; padding: 0 16px; height: var(--em-nav-h); line-height: var(--em-nav-h);
  font-size: 14px; color: var(--em-ink-2); cursor: pointer; transition: color .2s;
}
.em-nav-link:hover { color: var(--em-primary); }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-link { color: rgba(255, 255, 255, .85); }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-link:hover { color: #fff; }
.em-nav-item.has-children > .em-nav-link::after {
  content: ""; display: inline-block; margin-left: 6px; vertical-align: 2px;
  border: 4px solid transparent; border-top-color: currentColor;
}

/* 二级下拉面板：通栏宽面板，展示图标 + 名称 + 描述（参考默认主题样式） */
.em-nav-dropdown {
  position: fixed; top: var(--em-nav-h); left: 0; right: 0;
  background: #fff; border-bottom: 1px solid var(--em-line);
  box-shadow: 0 16px 32px rgba(23, 33, 31, .10);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity .2s, transform .2s, visibility .2s;
  z-index: 90;
}
.em-nav-item:hover .em-nav-dropdown { opacity: 1; visibility: visible; transform: none; }
.em-nav-dropdown-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  padding-top: 24px; padding-bottom: 28px;
}
.em-nav-dropdown-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border: 1px solid var(--em-line); border-radius: var(--em-radius);
  transition: border-color .2s, background .2s;
}
.em-nav-dropdown-item:hover { border-color: rgba(15, 123, 108, .35); background: var(--em-primary-bg); }
.em-nav-dropdown-icon { flex-shrink: 0; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; }
.em-nav-dropdown-icon img { width: 40px; height: 40px; object-fit: contain; }
.em-nav-dropdown-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.em-nav-dropdown-item .t { font-size: 14px; font-weight: 500; color: var(--em-ink-1); line-height: 1.5; }
.em-nav-dropdown-item .d { font-size: 12px; color: var(--em-ink-3); line-height: 1.6; }

/* 右侧操作区 */
.em-nav-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.no-login, .login-in { display: flex; align-items: center; }

/* 已登录用户 */
.login-in { position: relative; cursor: pointer; }
.em-avatar {
  width: 32px; height: 32px; border-radius: var(--em-radius);
  background: var(--em-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; line-height: 1;
}
.em-username { margin-left: 8px; font-size: 14px; color: var(--em-ink-1); max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-username { color: #fff; }
.em-user-menu {
  position: absolute; top: calc(100% + 16px); right: 0;
  width: 160px; padding: 6px;
  background: #fff; border: 1px solid var(--em-line); border-radius: var(--em-radius);
  box-shadow: var(--em-shadow-hover);
  opacity: 0; visibility: hidden; transition: opacity .2s, visibility .2s;
}
.login-in:hover .em-user-menu { opacity: 1; visibility: visible; }
.em-user-menu-item { display: block; padding: 9px 12px; font-size: 13px; color: var(--em-ink-2); border-radius: var(--em-radius); transition: background .2s, color .2s; }
.em-user-menu-item:hover { background: var(--em-primary-bg); color: var(--em-primary); }

/* 移动端汉堡按钮（默认隐藏） */
.em-nav-burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.em-nav-burger span { display: block; width: 22px; height: 2px; background: var(--em-ink-1); transition: .25s; }
.em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-burger span { background: #fff; }
.em-nav-burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.em-nav-burger.active span:nth-child(2) { opacity: 0; }
.em-nav-burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 页脚 ============ */
.em-footer { background: var(--em-primary-deep); color: rgba(255, 255, 255, .65); padding: 64px 0 32px; }
.em-footer-main { display: flex; justify-content: space-between; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.em-footer-groups { display: flex; flex-wrap: wrap; gap: 64px; flex: 1; }
.em-footer-group { display: flex; flex-direction: column; }
.em-footer-group-title { font-size: 15px; color: #fff; margin-bottom: 16px; }
.em-footer-link { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 2.2; transition: color .2s; }
.em-footer-link:hover { color: #fff; }
.em-footer-contact { flex-shrink: 0; min-width: 220px; }
.em-footer-contact-name { font-size: 14px; color: rgba(255, 255, 255, .85); margin-bottom: 8px; }
.em-footer-contact-item { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 2; }
.em-footer-qr { margin-top: 12px; width: 96px; height: 96px; padding: 6px; background: #fff; border-radius: var(--em-radius); }
.em-footer-qr img { width: 100%; height: 100%; object-fit: contain; }

.em-footer-flinks { padding: 20px 0; font-size: 13px; color: rgba(255, 255, 255, .5); border-bottom: 1px solid rgba(255, 255, 255, .08); }
.em-footer-flinks a { margin-right: 20px; color: rgba(255, 255, 255, .5); transition: color .2s; }
.em-footer-flinks a:hover { color: #fff; }

.em-footer-record { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 24px; font-size: 12px; color: rgba(255, 255, 255, .45); }
.em-footer-record-links a, .em-footer-record-links span { margin-right: 16px; color: rgba(255, 255, 255, .45); }
.em-footer-record-links a:hover { color: #fff; }

/* ============ 侧边悬浮工具栏 ============ */
.em-float { position: fixed; right: 16px; top: 50%; transform: translateY(-50%); z-index: 900; display: flex; flex-direction: column; gap: 8px; }
.em-float-item { position: relative; }
.em-float-icon {
  width: 44px; height: 44px; border-radius: var(--em-radius);
  background: #fff; box-shadow: var(--em-shadow);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.em-float-icon img { width: 22px; height: 22px; object-fit: contain; }
.em-float-pop {
  position: absolute; right: calc(100% + 12px); top: 50%; transform: translateY(-50%) translateX(8px);
  width: 200px; padding: 14px;
  background: #fff; border-radius: var(--em-radius); box-shadow: var(--em-shadow-hover);
  opacity: 0; visibility: hidden; transition: opacity .2s, transform .2s, visibility .2s;
}
.em-float-item:hover .em-float-pop { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.em-float-pop-title { font-size: 13px; color: var(--em-ink-1); margin-bottom: 8px; text-align: center; }
.em-float-pop-content { font-size: 12px; color: var(--em-ink-2); }
.em-float-pop-content img { max-width: 100%; }

/* ============ 响应式 ============ */
@media (max-width: 992px) {
  .em-nav-burger { display: flex; }
  .em-nav-menu {
    position: fixed; top: var(--em-nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--em-line);
    max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .em-nav-menu.open { max-height: 70vh; overflow-y: auto; }
  .em-nav-link { height: auto; line-height: 1.6; padding: 14px 20px; color: var(--em-ink-2); }
  .em-nav.nav-transparent:not(.scrolled):not(.menu-open) .em-nav-link { color: var(--em-ink-2); }
  .em-nav-dropdown { position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none; border: none; padding: 0; }
  .em-nav-dropdown-grid { display: block; width: auto; max-width: none; margin: 0; padding: 0; }
  .em-nav-dropdown-item { border: none; padding: 8px 20px 8px 36px; }
  .em-nav-dropdown-item:hover { background: transparent; }
  .em-nav-dropdown-icon { width: 24px; height: 24px; margin-right: 8px; }
  .em-nav-dropdown-icon img { width: 24px; height: 24px; }
  .em-nav-item:hover .em-nav-dropdown { transform: none; }
  .em-footer-main { flex-direction: column; }
  .em-footer-groups { gap: 32px; }
  .em-float { display: none; }
}