/* Admin 全屏层壳（Overlay）
 * 真源：docs/开发/Admin全屏层-Overlay抽屉.md
 * 遮罩 token：--modal-overlay-bg（.bg-theme-overlay-mask）
 * 兼容旧类名 .admin-drawer*（同规则）
 */

.admin-overlay,
.admin-drawer {
  position: fixed;
  inset: 0;
  /* 免疫父级 space-y-* 等 margin（实测会顶下 fixed 层） */
  margin: 0 !important;
  z-index: 70;
  display: none;
}

.admin-overlay[data-open="true"],
.admin-drawer[data-open="true"] {
  display: block;
}

/* portal 宿主：不占布局、不拦截事件 */
#admin-overlay-root {
  position: absolute;
  width: 0;
  height: 0;
  overflow: visible;
  pointer-events: none;
}

#admin-overlay-root > .admin-overlay,
#admin-overlay-root > .admin-drawer {
  pointer-events: auto;
}

.admin-overlay__backdrop,
.admin-drawer__backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  cursor: default;
  opacity: 0;
  background-color: var(--modal-overlay-bg);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  transition: opacity var(--transition-normal, 0.2s ease);
  pointer-events: auto;
}

:root[data-glass="on"] body .admin-overlay__backdrop,
:root[data-glass="on"] body .admin-drawer__backdrop {
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
}

.admin-overlay[data-open="true"] .admin-overlay__backdrop,
.admin-drawer[data-open="true"] .admin-drawer__backdrop {
  opacity: 1;
}

.admin-overlay__panel,
.admin-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  width: min(48rem, 100%);
  height: 100dvh;
  max-height: 100dvh;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--color-border, var(--border-color));
  background: var(--color-overlay-surface, var(--card-surface-bg));
  box-shadow: var(--shadow-lg);
  color: var(--color-text-primary, var(--text-color));
  transform: translateX(100%);
  transition: transform var(--transition-normal, 0.2s ease);
}

/* 浮层 surface 在玻璃态是半透明背景，面板本身必须承担采样模糊。
 * 遮罩只负责压暗页面，不能替代面板的玻璃层。 */
:root[data-glass="on"] body .admin-overlay__panel,
:root[data-glass="on"] body .admin-drawer__panel {
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation)) contrast(var(--glass-contrast));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation)) contrast(var(--glass-contrast));
}

/* size 档位（data-overlay-size） */
.admin-overlay[data-overlay-size="sm"] .admin-overlay__panel,
.admin-drawer[data-overlay-size="sm"] .admin-drawer__panel {
  width: min(24rem, 100%);
}

.admin-overlay[data-overlay-size="md"] .admin-overlay__panel,
.admin-drawer[data-overlay-size="md"] .admin-drawer__panel {
  width: min(32rem, 100%);
}

.admin-overlay[data-overlay-size="lg"] .admin-overlay__panel,
.admin-drawer[data-overlay-size="lg"] .admin-drawer__panel,
.admin-overlay:not([data-overlay-size]) .admin-overlay__panel,
.admin-drawer:not([data-overlay-size]) .admin-drawer__panel {
  width: min(48rem, 100%);
}

.admin-overlay[data-overlay-size="full"] .admin-overlay__panel,
.admin-drawer[data-overlay-size="full"] .admin-drawer__panel {
  width: 100%;
  border-left: none;
}

.admin-overlay[data-open="true"] .admin-overlay__panel,
.admin-drawer[data-open="true"] .admin-drawer__panel {
  transform: translateX(0);
}

.admin-overlay__panel:focus,
.admin-drawer__panel:focus {
  outline: none;
}

.admin-overlay__head,
.admin-drawer__head {
  display: flex;
  flex-shrink: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border, var(--border-color));
}

.admin-overlay__eyebrow,
.admin-drawer__eyebrow {
  margin: 0 0 0.25rem;
  color: var(--color-text-secondary, var(--secondary-text-color));
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.admin-overlay__title,
.admin-drawer__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.35;
  color: var(--color-text-primary, var(--text-color));
}

.admin-overlay__subtitle,
.admin-drawer__subtitle {
  margin: 0.25rem 0 0;
  color: var(--color-text-secondary, var(--secondary-text-color));
  font-size: 0.75rem;
  line-height: 1.45;
}

.admin-overlay__body,
.admin-drawer__body {
  flex: 1 1 auto;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 1rem 1.25rem;
  -webkit-overflow-scrolling: touch;
}

.admin-overlay__foot,
.admin-drawer__foot {
  display: flex;
  flex-shrink: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--color-border, var(--border-color));
  /* 复用面板 surface，避免玻璃态重复叠加同一层半透明背景。 */
  background: transparent;
}

@media (max-width: 640px) {
  .admin-overlay__panel,
  .admin-drawer__panel {
    width: 100%;
    border-left: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .admin-overlay__backdrop,
  .admin-drawer__backdrop,
  .admin-overlay__panel,
  .admin-drawer__panel {
    transition: none;
  }
}