/* ===================================================================
   AppHeader · 官网与管理端共享的导航视觉基础
   业务导航、组织切换和账户操作由各端自行注入；此文件只负责品牌、
   布局、基础控件、账户触发器和响应式行为。
   =================================================================== */

.app-header {
  --app-header-height: var(--nav-h, 68px);
  --app-header-bg: var(--bg, var(--c-surface, #fff));
  --app-header-surface: var(--surface, var(--c-surface, #fff));
  --app-header-sunken: var(--bg-sunken, var(--c-surface-2, #f6f8fb));
  --app-header-text: var(--text, var(--c-ink-900, #0f172a));
  --app-header-muted: var(--muted, var(--c-ink-500, #64748b));
  --app-header-line: var(--line, var(--c-line, #e2e8f0));
  --app-header-line-strong: var(--line-strong, var(--c-line-strong, #cbd5e1));
  --app-header-accent: var(--accent, var(--c-primary, #1a6daf));
  --app-header-accent-ink: var(--accent-ink, #fff);
  --app-header-shadow: var(--shadow, 0 12px 32px -18px rgb(15 23 42 / .28));
  --app-header-radius: var(--r-panel, 14px);
  --app-header-ease: var(--ease, cubic-bezier(.16, 1, .3, 1));

  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  color: var(--app-header-text);
  background: color-mix(in srgb, var(--app-header-bg) 88%, transparent);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  transition: border-color .2s var(--app-header-ease), box-shadow .2s var(--app-header-ease);
}

.app-header[data-stuck="true"],
.app-header--app {
  border-bottom-color: var(--app-header-line);
}

.app-header--app {
  box-shadow: 0 14px 38px -28px color-mix(in srgb, var(--app-header-accent) 42%, transparent);
}

.app-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 28px);
  width: 100%;
  min-height: var(--app-header-height);
}

.app-header--app .app-header__inner {
  padding: 0 clamp(16px, 3vw, 32px);
}

.app-header__brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  flex: 0 1 auto;
  gap: 10px;
  color: var(--app-header-text);
  text-decoration: none;
  white-space: nowrap;
}

.app-header__brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  overflow: hidden;
  border-radius: 10px;
}

.app-header--site .app-header__brand-mark {
  width: 30px;
  height: 30px;
  flex-basis: 30px;
  border-radius: 8px;
}

.app-header__brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.app-header__brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 1px;
}

.app-header__brand-title {
  overflow: hidden;
  color: var(--app-header-text);
  font-size: 16px;
  font-weight: 750;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-header__brand-subtitle {
  overflow: hidden;
  color: var(--app-header-muted);
  font-size: 12px;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-header__content {
  display: flex;
  align-items: center;
  min-width: 0;
  flex: 1 1 auto;
  gap: 12px;
}

.app-header__nav {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 6px;
  margin-left: auto;
}

.app-header--site .app-header__nav { gap: 26px; }

.app-header__nav a,
.app-header__nav-link {
  color: var(--app-header-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--app-header-ease), background .2s var(--app-header-ease);
}

.app-header__nav a:hover,
.app-header__nav-link:hover,
.app-header__nav-link[aria-current="page"] {
  color: var(--app-header-accent);
}

.app-header__context,
.app-header__actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
}

.app-header__context { min-width: 0; }

.app-header__mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  padding: 0;
  color: var(--app-header-muted);
  background: transparent;
  border: 1px solid var(--app-header-line);
  border-radius: 999px;
  cursor: pointer;
}

.app-header__mobile-toggle svg { width: 19px; height: 19px; fill: currentColor; }
.app-header__mobile-toggle .app-header__close-icon { display: none; }
.app-header__mobile-toggle[aria-expanded="true"] .app-header__menu-icon { display: none; }
.app-header__mobile-toggle[aria-expanded="true"] .app-header__close-icon { display: block; }

/* 官网与管理端共用的账户触发器语言。 */
.account-menu { position: relative; display: inline-flex; align-items: center; }
.account-trigger,
.app-header-account {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 3px 10px 3px 4px;
  color: var(--app-header-text);
  background: var(--app-header-surface);
  border: 1px solid var(--app-header-line);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .2s var(--app-header-ease), background .2s var(--app-header-ease), box-shadow .2s var(--app-header-ease), transform .15s var(--app-header-ease);
}

.account-trigger:hover,
.account-menu[data-open="true"] .account-trigger,
.app-header-account:hover,
.app-header-account[aria-expanded="true"] {
  background: color-mix(in srgb, var(--app-header-accent) 6%, var(--app-header-surface));
  border-color: color-mix(in srgb, var(--app-header-accent) 48%, var(--app-header-line));
  box-shadow: 0 3px 12px color-mix(in srgb, var(--app-header-accent) 12%, transparent);
}

.account-trigger:active,
.app-header-account:active { transform: translateY(1px); }

.avatar-btn,
.app-header-account__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  overflow: hidden;
  padding: 0;
  color: var(--app-header-accent-ink);
  background: var(--app-header-accent);
  border: 0;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 750;
  line-height: 1;
}

.avatar-btn { color: var(--app-header-muted); background: var(--app-header-sunken); }
.avatar-btn__fallback, .avatar-btn__initial, .account-avatar__fallback, .account-avatar__initial {
  display: inline-flex; align-items: center; justify-content: center; width: 100%; height: 100%;
}
.avatar-btn__fallback .icon { width: 18px; height: 18px; }
.avatar-btn__initial, .account-avatar__initial { color: var(--app-header-accent-ink); background: var(--app-header-accent); }

.account-trigger__copy,
.app-header-account__copy {
  display: flex;
  min-width: 46px;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.05;
}

.account-trigger__state,
.app-header-account__state { color: var(--app-header-muted); font-size: 10px; letter-spacing: .04em; }
.account-trigger__name,
.app-header-account__name {
  max-width: 9ch;
  margin-top: 3px;
  overflow: hidden;
  color: var(--app-header-text);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-trigger__chevron,
.app-header-account__chevron {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  color: var(--app-header-muted);
  fill: currentColor;
  transition: transform .2s var(--app-header-ease);
}
.account-menu[data-open="true"] .account-trigger__chevron,
.app-header-account[aria-expanded="true"] .app-header-account__chevron { transform: rotate(180deg); }

.account-menu__panel {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  z-index: 60;
  width: min(292px, calc(100vw - 32px));
  padding: 10px;
  background: var(--app-header-surface);
  border: 1px solid var(--app-header-line);
  border-radius: var(--app-header-radius);
  box-shadow: var(--app-header-shadow);
}
.account-menu[data-open="true"] .account-menu__panel { display: block; animation: app-header-pop .18s ease-out both; }
@keyframes app-header-pop { from { opacity: 0; transform: translateY(-5px) scale(.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.account-menu__header { display: flex; align-items: center; gap: 10px; padding: 8px 8px 10px; }
.account-menu__header-avatar { display: inline-flex; width: 40px; height: 40px; flex: 0 0 40px; overflow: hidden; border-radius: 50%; background: var(--app-header-sunken); color: var(--app-header-muted); }
.account-menu__header-avatar .icon { width: 20px; height: 20px; }
.account-menu__header-copy { min-width: 0; }
.account-menu__state { margin: 0; color: var(--app-header-muted); font-size: 11px; letter-spacing: .05em; }
.account-menu__name { margin: 3px 0 0; overflow: hidden; color: var(--app-header-text); font-size: 14px; font-weight: 700; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.account-menu__organization { margin: 3px 0 0; overflow: hidden; color: var(--app-header-muted); font-size: 12px; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.account-menu__divider { height: 1px; margin: 0 4px 5px; background: var(--app-header-line); }
.account-menu__item {
  display: flex; align-items: center; gap: 10px; width: 100%; min-height: 40px;
  padding: 9px 10px; color: var(--app-header-text); background: transparent; border: 0; border-radius: 9px;
  text-align: left; font: inherit; font-size: 14px; cursor: pointer;
  transition: background .15s var(--app-header-ease), color .15s var(--app-header-ease);
}
.account-menu__item > .icon { width: 17px; height: 17px; flex: 0 0 17px; color: var(--app-header-muted); }
.account-menu__item:hover { background: var(--app-header-sunken); }
.account-menu__item-arrow { width: 14px; height: 14px; margin-left: auto; color: var(--app-header-muted); fill: currentColor; }
.account-menu__logout { margin-top: 3px; color: #c3423f; }
.account-menu__logout > .icon { color: currentColor; transform: rotate(180deg); }
.account-menu__logout:hover { color: #a83230; background: color-mix(in srgb, #c3423f 8%, var(--app-header-sunken)); }

@media (prefers-reduced-transparency: reduce) {
  .app-header { background: var(--app-header-bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media (max-width: 1120px) {
  .app-header--app .app-header__mobile-toggle { display: inline-flex; margin-left: auto; }
  .app-header--app .app-header__content {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 12px;
    right: 12px;
    align-items: stretch;
    flex-direction: column;
    padding: 12px;
    background: var(--app-header-surface);
    border: 1px solid var(--app-header-line);
    border-radius: 0 0 var(--app-header-radius) var(--app-header-radius);
    box-shadow: var(--app-header-shadow);
  }
  .app-header--app[data-menu-open="true"] .app-header__content { display: flex; animation: app-header-pop .18s ease-out both; }
  .app-header--app .app-header__nav,
  .app-header--app .app-header__context,
  .app-header--app .app-header__actions { width: 100%; margin: 0; }
  .app-header--app .app-header__nav { overflow-x: auto; padding-bottom: 4px; }
  .app-header--app .app-header__context { order: -1; }
  .app-header--app .app-header__actions { padding-top: 8px; border-top: 1px solid var(--app-header-line); }
}

@media (max-width: 1050px) {
  .account-trigger__copy { display: none; }
  .account-trigger { padding-right: 4px; }
  .account-trigger__chevron { display: none; }
}

@media (max-width: 900px) {
  .app-header--site .app-header__nav {
    display: none;
    position: absolute;
    top: var(--app-header-height);
    left: 0;
    right: 0;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 8px 24px 20px;
    background: var(--app-header-bg);
    border-bottom: 1px solid var(--app-header-line);
  }
  .app-header--site .app-header__nav[data-open="true"] { display: flex; }
  .app-header--site .app-header__nav a { padding: 13px 0; font-size: 16px; border-bottom: 1px solid var(--app-header-line); }
  .app-header--site .app-header__nav a:last-child { border-bottom: 0; }
  .app-header--site .app-header__mobile-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
  .app-header--app .app-header__brand-title { max-width: calc(100vw - 118px); font-size: 14px; }
  .app-header--app .app-header__brand-subtitle { display: none; }
  .app-header--app .app-header-account__copy,
  .app-header--app .app-header-account__chevron { display: none; }
  .app-header--app .app-header-account { padding-right: 4px; }
}

@media (max-width: 480px) {
  .app-header--site .app-header__actions .btn { display: none; }
  .account-menu__panel { right: -8px; }
}

/* Site icon button styles are loaded after this shared file; keep the
   responsive toggle state explicit so the generic .icon-btn cannot expose it. */
.app-header .app-header__mobile-toggle { display: none; }
.app-header .nav__burger .icon--close { display: none; }
.app-header .nav__burger[aria-expanded="true"] .icon--open { display: none; }
.app-header .nav__burger[aria-expanded="true"] .icon--close { display: block; }
@media (max-width: 1120px) {
  .app-header--app .app-header__mobile-toggle { display: inline-flex; }
}
@media (max-width: 900px) {
  .app-header--site .app-header__mobile-toggle { display: inline-flex; }
}