/* ============================================================================
   客小帮 AI 智慧拓客平台 · 布局样式（应用外壳）
   结构：.kx-app > .kx-sidebar + .kx-main(> .kx-topbar + #kx-page)
   ========================================================================== */

.kx-app {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: var(--kx-bg);
}

/* 无外壳页面容器（登录页等） */
.kx-blank-root {
  min-height: 100vh;
  background: var(--kx-bg);
}
.kx-page-anim { animation: kx-fade-up .28s var(--kx-ease) both; }
.kx-page-anim--blank { animation: kx-rise-in .38s var(--kx-ease) both; }

/* ============================================================================
   侧边栏
   ========================================================================== */
.kx-sidebar {
  position: relative;
  z-index: 20;
  display: flex;
  flex-direction: column;
  width: var(--kx-sidebar-w);
  flex: none;
  background: var(--kx-sidebar-bg);
  background-image: var(--kx-gradient-dark);
  transition: width .24s var(--kx-ease), transform .24s var(--kx-ease);
  color: var(--kx-sidebar-text);
}
.kx-sidebar::after {
  content: '';
  position: absolute;
  inset: 0 0 0 auto;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02));
}

/* 品牌区 */
.kx-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--kx-sp-3);
  height: var(--kx-topbar-h);
  padding: 0 var(--kx-sp-5);
  flex: none;
  overflow: hidden;
}
.kx-sidebar__logo {
  width: 34px; height: 34px;
  flex: none;
  display: block;
  filter: drop-shadow(0 4px 10px rgba(200, 16, 46, .4));
}
.kx-sidebar__brand-text { display: flex; flex-direction: column; min-width: 0; }
.kx-sidebar__name {
  font-size: var(--kx-fs-lg);
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  white-space: nowrap;
  background: linear-gradient(135deg, #ffffff 30%, #f2e0a3 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.kx-sidebar__slogan {
  font-size: 10px;
  color: var(--kx-text-3);
  white-space: nowrap;
  letter-spacing: .5px;
}

/* 菜单 */
.kx-sidebar__menu {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--kx-sp-2) 0 var(--kx-sp-4);
}
.kx-sidebar__menu::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .12); background-clip: content-box; }
.kx-sidebar__menu::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, .22); background-clip: content-box; }
.kx-sidebar__group {
  padding: var(--kx-sp-4) var(--kx-sp-5) var(--kx-sp-2);
  font-size: 11px;
  color: #6b7280;
  letter-spacing: 1px;
  white-space: nowrap;
}

.kx-menu__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--kx-sp-3);
  height: 42px;
  margin: 2px 10px;
  padding: 0 var(--kx-sp-3);
  border-radius: var(--kx-radius);
  color: var(--kx-sidebar-text);
  font-size: var(--kx-fs);
  cursor: pointer;
  user-select: none;
  transition: background var(--kx-dur) var(--kx-ease), color var(--kx-dur) var(--kx-ease);
  white-space: nowrap;
}
.kx-menu__item:hover { background: var(--kx-sidebar-hover); color: #fff; }
.kx-menu__item:active { background: rgba(200, 16, 46, .2); }
.kx-menu__item.is-active {
  background: var(--kx-sidebar-active);
  color: var(--kx-sidebar-text-active);
  font-weight: 500;
  box-shadow: 0 6px 16px rgba(200, 16, 46, .28);
}
.kx-menu__item.is-active::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--kx-gold-light), var(--kx-gold-deep));
  box-shadow: 0 0 8px rgba(212, 175, 55, .7);
}
.kx-menu__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  font-size: 18px;
  flex: none;
  transition: color var(--kx-dur) var(--kx-ease);
}
.kx-menu__item.is-active .kx-menu__icon { color: var(--kx-gold-light); }
.kx-menu__label { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.kx-menu__arrow {
  display: inline-flex;
  font-size: 14px;
  color: #6b7280;
  transition: transform var(--kx-dur) var(--kx-ease);
}
.kx-menu__arrow.is-open { transform: rotate(90deg); }
.kx-menu__children {
  overflow: hidden;
  max-height: 0;
  transition: max-height .26s var(--kx-ease);
}
.kx-menu__children.is-open { max-height: 720px; }
.kx-menu__children .kx-menu__item {
  height: 38px;
  padding-left: var(--kx-sp-6);
  font-size: var(--kx-fs-sm);
  color: #9aa0b0;
}
.kx-menu__children .kx-menu__item.is-active {
  background: rgba(200, 16, 46, .16);
  color: #fff;
  box-shadow: none;
  font-weight: 500;
}
.kx-menu__children .kx-menu__item.is-active::before {
  left: -10px;
  height: 16px;
}
.kx-menu__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #565c6b;
  flex: none;
  margin-left: 6px;
  transition: background var(--kx-dur) var(--kx-ease);
}
.kx-menu__children .kx-menu__item.is-active .kx-menu__dot { background: var(--kx-gold); }

/* 底部折叠按钮 */
.kx-sidebar__foot {
  flex: none;
  padding: var(--kx-sp-2) var(--kx-sp-3) var(--kx-sp-4);
  border-top: 1px solid rgba(255, 255, 255, .06);
}
.kx-sidebar__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--kx-sp-2);
  width: 100%;
  height: 38px;
  border-radius: var(--kx-radius);
  color: var(--kx-sidebar-text);
  font-size: var(--kx-fs-sm);
  transition: all var(--kx-dur) var(--kx-ease);
}
.kx-sidebar__toggle:hover { background: var(--kx-sidebar-hover); color: #fff; }
.kx-sidebar__toggle .kx-icon { font-size: 18px; }

/* 折叠态 */
.kx-app.is-collapsed .kx-sidebar { width: var(--kx-sidebar-w-collapsed); }
.kx-app.is-collapsed .kx-sidebar__brand { padding: 0 15px; }
.kx-app.is-collapsed .kx-sidebar__brand-text,
.kx-app.is-collapsed .kx-menu__label,
.kx-app.is-collapsed .kx-menu__arrow,
.kx-app.is-collapsed .kx-sidebar__group,
.kx-app.is-collapsed .kx-sidebar__toggle span { display: none; }
.kx-app.is-collapsed .kx-menu__item { justify-content: center; padding: 0; margin: 4px 10px; }
.kx-app.is-collapsed .kx-menu__children { display: none; }

/* 移动端遮罩 */
.kx-sidebar__mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(29, 33, 41, .45);
  z-index: 19;
  animation: kx-fade-in var(--kx-dur) var(--kx-ease) both;
}

/* ============================================================================
   主区域
   ========================================================================== */
.kx-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--kx-bg);
}

/* 顶部栏 */
.kx-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kx-sp-4);
  height: var(--kx-topbar-h);
  padding: 0 var(--kx-sp-5);
  flex: none;
  background: var(--kx-surface);
  border-bottom: 1px solid var(--kx-border-2);
  box-shadow: var(--kx-shadow-xs);
  position: relative;
  z-index: 10;
}
.kx-topbar__left { display: flex; align-items: center; gap: var(--kx-sp-3); min-width: 0; }
.kx-topbar__right { display: flex; align-items: center; gap: var(--kx-sp-2); }
.kx-topbar__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 34px; height: 34px;
  border-radius: var(--kx-radius);
  color: var(--kx-text-2);
  font-size: 18px;
  transition: all var(--kx-dur) var(--kx-ease);
  position: relative;
}
.kx-topbar__btn:hover { background: var(--kx-primary-50); color: var(--kx-primary); }
.kx-topbar__btn:active { background: var(--kx-primary-100); }
.kx-topbar__btn.is-active { background: var(--kx-primary-50); color: var(--kx-primary); }
.kx-topbar__dot {
  position: absolute;
  top: 6px; right: 7px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--kx-danger);
  border: 1.5px solid var(--kx-surface);
  animation: kx-pulse 2s ease-in-out infinite;
}

/* 面包屑 */
.kx-breadcrumb { display: flex; align-items: center; gap: 6px; min-width: 0; font-size: var(--kx-fs-sm); }
.kx-breadcrumb__item { color: var(--kx-text-3); white-space: nowrap; }
.kx-breadcrumb__item.is-current { color: var(--kx-text); font-weight: 600; }
.kx-breadcrumb__sep { color: var(--kx-text-4); display: inline-flex; }

/* 全局搜索 */
.kx-global-search {
  display: flex;
  align-items: center;
  gap: var(--kx-sp-2);
  height: 34px;
  width: 220px;
  padding: 0 var(--kx-sp-3);
  border-radius: var(--kx-radius-full);
  background: var(--kx-surface-2);
  border: 1px solid var(--kx-border-2);
  color: var(--kx-text-3);
  font-size: var(--kx-fs-sm);
  cursor: pointer;
  transition: all var(--kx-dur) var(--kx-ease);
}
.kx-global-search:hover { background: var(--kx-surface); border-color: var(--kx-primary-200); color: var(--kx-text-2); }
.kx-global-search__kbd {
  margin-left: auto;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--kx-surface);
  border: 1px solid var(--kx-border);
  font-size: 11px;
  color: var(--kx-text-3);
}

/* 用户区 */
.kx-user {
  display: flex;
  align-items: center;
  gap: var(--kx-sp-2);
  height: 38px;
  padding: 0 10px 0 6px;
  border-radius: var(--kx-radius-full);
  cursor: pointer;
  transition: background var(--kx-dur) var(--kx-ease);
  position: relative;
}
.kx-user:hover { background: var(--kx-surface-2); }
.kx-user__meta { display: flex; flex-direction: column; line-height: 1.25; max-width: 110px; }
.kx-user__name { font-size: var(--kx-fs-sm); color: var(--kx-text); font-weight: 500; }
.kx-user__role { font-size: 11px; color: var(--kx-text-3); }
.kx-user__menu { top: calc(100% + 8px); right: 0; }

/* 内容区 */
.kx-page {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--kx-sp-5);
}
.kx-page > .kx-page-anim { display: flex; flex-direction: column; gap: var(--kx-sp-5); }

/* 页面通用头 */
.kx-page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--kx-sp-4);
  flex-wrap: wrap;
}
.kx-page-head__title { font-size: var(--kx-fs-2xl); font-weight: 700; color: var(--kx-text); letter-spacing: -.3px; }
.kx-page-head__desc { font-size: var(--kx-fs-sm); color: var(--kx-text-3); margin-top: 4px; }
.kx-page-head__actions { display: flex; align-items: center; gap: var(--kx-sp-2); }

/* 网格 */
.kx-grid { display: grid; gap: var(--kx-sp-5); }
.kx-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kx-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kx-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kx-grid--2-1 { grid-template-columns: 2fr 1fr; }
.kx-grid--1-2 { grid-template-columns: 1fr 2fr; }

/* ============================================================================
   响应式
   ========================================================================== */
@media (max-width: 1440px) {
  .kx-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .kx-global-search { width: 180px; }
}

@media (max-width: 1280px) {
  .kx-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kx-grid--2-1,
  .kx-grid--1-2 { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .kx-sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    transform: translateX(-100%);
    box-shadow: var(--kx-shadow-lg);
  }
  .kx-app.is-mobile-open .kx-sidebar { transform: translateX(0); }
  .kx-app.is-mobile-open .kx-sidebar__mask { display: block; }
  .kx-app.is-collapsed .kx-sidebar { width: var(--kx-sidebar-w); }
  .kx-app.is-collapsed .kx-sidebar__brand-text,
  .kx-app.is-collapsed .kx-menu__label,
  .kx-app.is-collapsed .kx-menu__arrow,
  .kx-app.is-collapsed .kx-sidebar__group { display: flex; }
  .kx-app.is-collapsed .kx-menu__item { justify-content: flex-start; padding: 0 var(--kx-sp-3); }
  .kx-app.is-collapsed .kx-menu__children.is-open { display: block; }
  .kx-global-search { display: none; }
  .kx-grid--3,
  .kx-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kx-user__meta { display: none; }
}

@media (max-width: 768px) {
  .kx-page { padding: var(--kx-sp-4); }
  .kx-grid--2,
  .kx-grid--3,
  .kx-grid--4 { grid-template-columns: 1fr; }
  .kx-topbar { padding: 0 var(--kx-sp-4); }
}