/* ============================================================
   m3-layout.css — 顶栏 / 工具栏 / 搜索 / 字辈 Chips / 抽屉
   ============================================================ */

/* ---------- 页面骨架: 顶栏 + 工具栏 + 画布纵向排布 ---------- */
body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

/* 顶栏内的文字药丸按钮 (校订入口) */
.appbar-pill {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px;
  margin-right: 4px;
  border-radius: 20px;
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  font-size: var(--type-label-large);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 200ms var(--ease-entrance), border-color 200ms var(--ease-entrance),
              var(--morph);
}
.appbar-pill:hover { background: var(--md-state-hover); border-color: var(--md-outline); }
.appbar-pill:active { border-radius: var(--shape-xs); }
.appbar-pill[hidden] { display: none; }
.appbar-pill svg { width: 18px; height: 18px; fill: none; stroke: var(--md-primary); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* 身份标识（点击退出登录） */
.appbar-pill--role {
  background: transparent;
  border-style: dashed;
  color: var(--md-on-surface-variant);
  font-size: var(--type-body-small);
}
.appbar-pill--role:hover { color: var(--md-on-surface); border-style: solid; }

/* 本地文件模式提示条 */
.local-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--md-surface-container-high);
  border-bottom: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface-variant);
  font-size: var(--type-body-small);
  line-height: 1.5;
  flex: none;
}
.local-banner__text b { color: var(--md-primary); font-weight: 500; }
.local-banner__close {
  flex: none;
  margin-left: auto;
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid var(--md-outline);
  background: transparent;
  color: var(--md-on-surface);
  font-family: inherit;
  font-size: var(--type-body-small);
  cursor: pointer;
}
.local-banner__close:hover { background: var(--md-state-hover); }

/* 轻提示 */.m3-toast {
  position: fixed;
  left: 50%;
  bottom: 88px;
  transform: translateX(-50%) translateY(10px);
  max-width: 70vw;
  padding: 12px 18px;
  border-radius: var(--shape-xs);
  background: var(--md-surface-container-high);
  border: 1px solid var(--md-outline-variant);
  box-shadow: var(--elevation-3);
  color: var(--md-on-surface);
  font-size: var(--type-body-medium);
  z-index: 70;
  opacity: 0;
  transition: opacity 200ms var(--ease-entrance), transform 200ms var(--ease-entrance);
  pointer-events: none;
}
.m3-toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 2.2 顶栏 Top App Bar ---------- */
.appbar {
  flex: none;
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
  padding: 0 8px 0 20px;
  background: var(--md-surface-container-low);
  border-bottom: 1px solid var(--md-outline-variant);
}

.appbar__title {
  margin: 0;
  font-size: var(--type-title-large);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--md-on-surface);
  white-space: nowrap;
}

.appbar__meta {
  font-size: var(--type-body-small);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.appbar__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* M3 Icon Button: 48x48 触控区 */
.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 24px;
  background: transparent;
  color: var(--md-on-surface-variant);
  cursor: pointer;
  overflow: hidden;
  transition: background-color 200ms var(--ease-entrance), color 200ms var(--ease-entrance),
              var(--morph);
}
.icon-btn:hover { background: var(--md-state-hover); color: var(--md-on-surface); }
.icon-btn:active { border-radius: var(--shape-xs); }       /* 6.5 按钮形变 */
.icon-btn:focus-visible { outline: 2px solid var(--md-primary); outline-offset: 2px; }
.icon-btn svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.icon-btn--sm { width: 40px; height: 40px; }
.icon-btn--sm svg { width: 20px; height: 20px; }
.icon-btn:disabled { opacity: 0.38; cursor: default; }

/* ---------- 工具栏 ---------- */
.toolbar {
  flex: none;
  position: relative;
  z-index: 15;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 20px 14px;
  background: var(--md-surface);
  border-bottom: 1px solid rgba(73, 69, 79, 0.5);
}

.toolbar__row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 2.4 搜索栏 ---------- */
.search {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 440px;
  min-width: 260px;
  height: 56px;
  padding: 0 8px 0 18px;
  border-radius: var(--shape-full);
  background: var(--md-surface-container-high);
  transition: outline-color 150ms var(--ease-entrance);
  outline: 2px solid transparent;
  outline-offset: -2px;
}
.search:focus-within {
  outline: 2px solid var(--md-primary);       /* 2.4 Focus 2px 描边 */
}
.search__icon { width: 22px; height: 22px; flex: none; fill: none; stroke: var(--md-on-surface-variant); stroke-width: 1.8; stroke-linecap: round; }
.search input {
  flex: 1 1 auto;
  min-width: 0;
  height: 100%;
  border: 0;
  background: transparent;
  color: var(--md-on-surface);
  font-family: inherit;
  font-size: var(--type-body-medium);
  letter-spacing: 0.01em;
}
.search input::placeholder { color: var(--md-on-surface-variant); opacity: 0.85; }
.search input:focus { outline: none; }

/* ---------- 3.3 同音推荐层 ---------- */
.suggest {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: 328px;
  overflow-y: auto;
  padding: 6px;
  border-radius: var(--shape-xs);
  background: var(--md-surface-container-high);
  box-shadow: var(--elevation-3);
  z-index: 40;
}
.suggest[hidden] { display: none; }
.suggest__head {
  padding: 8px 12px 6px;
  font-size: var(--type-body-small);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.03em;
}
.suggest__item {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 48px;
  padding: 8px 12px;
  border: 0;
  border-radius: var(--shape-xs);
  background: transparent;
  color: var(--md-on-surface);
  font-size: var(--type-body-medium);
  text-align: left;
  cursor: pointer;
  transition: background-color 160ms var(--ease-entrance);
}
.suggest__item:hover { background: var(--md-state-hover); }
.suggest__item:active { background: var(--md-state-press); }
.suggest__name { font-weight: 500; }
.suggest__meta { margin-left: auto; font-size: var(--type-body-small); color: var(--md-on-surface-variant); }
.suggest__empty { padding: 14px 12px; color: var(--md-on-surface-variant); font-size: var(--type-body-small); }

/* ---------- 门别 (分段按钮) ---------- */
.doors {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 40px;
  padding: 4px;
  border-radius: var(--shape-full);
  background: var(--md-surface-container-low);
}
.door {
  position: relative;
  height: 32px;
  padding: 0 16px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  color: var(--md-on-surface-variant);
  font-size: var(--type-label-large);
  cursor: pointer;
  overflow: hidden;
  transition: background-color 200ms var(--ease-entrance), color 200ms var(--ease-entrance),
              var(--morph);
}
.door:hover { background: var(--md-state-hover); color: var(--md-on-surface); }
.door:active { border-radius: var(--shape-xs); }
.door[aria-selected="true"] { background: var(--md-primary); color: var(--md-on-primary); font-weight: 500; }

/* ---------- 2.3 字辈 Filter Chips ---------- */
.chips {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }

.chip {
  position: relative;
  flex: none;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-xs);   /* 2.3 规范: 字辈 Chip 8px 圆角 */
  background: transparent;
  color: var(--md-on-surface);
  font-size: var(--type-label-large);
  letter-spacing: 0.02em;
  cursor: pointer;
  overflow: hidden;
  transition: background-color 200ms var(--ease-entrance), color 200ms var(--ease-entrance),
              border-color 200ms var(--ease-entrance), var(--morph);
}
.chip:hover { background: var(--md-state-hover); }
.chip:active { border-radius: var(--shape-xs); }
.chip[aria-pressed="true"] {
  background: var(--md-primary);
  border-color: var(--md-primary);
  color: var(--md-on-primary);
  font-weight: 500;
}
.chip__count { margin-left: 6px; font-size: var(--type-body-small); opacity: 0.72; }

/* ---------- 画布 ---------- */
.canvas-wrap {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  background: var(--md-surface);
}
#tree { display: block; width: 100%; height: 100%; cursor: grab; }
#tree:active { cursor: grabbing; }

.legend {
  position: absolute;
  left: 20px;
  bottom: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 14px;
  border-radius: var(--shape-xs);
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  font-size: var(--type-body-small);
  color: var(--md-on-surface-variant);
  pointer-events: none;
}
.legend__dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.legend__dot--normal { background: var(--md-outline); }
.legend__dot--focus { background: var(--md-primary); }
.legend__dot--dangling { background: var(--md-error); }

/* ---------- 5.1 抽屉 Side Sheet ---------- */
.scrim {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--md-scrim);
  opacity: 0;
  transition: opacity var(--dur-sheet-close) var(--ease-emphasized-accel);
}
.scrim[hidden] { display: none; }
.scrim.is-open { opacity: 1; transition: opacity var(--dur-sheet-open) var(--ease-emphasized-decel); }

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 60;
  width: 360px;
  max-width: 92vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--md-surface-container);          /* #211F26 */
  border-left: 1px solid var(--md-outline-variant);
  transform: translateX(100%);
  transition: transform var(--dur-sheet-close) var(--ease-emphasized-accel);
  will-change: transform;
}
.drawer.is-open {
  transform: translateX(0);
  transition: transform var(--dur-sheet-open) var(--ease-emphasized-decel);
}

.drawer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 8px 0 20px;
  border-bottom: 1px solid var(--md-outline-variant);
}
.drawer__eyebrow { font-size: var(--type-body-small); color: var(--md-on-surface-variant); letter-spacing: 0.06em; }
.drawer__body { flex: 1 1 auto; overflow-y: auto; padding: 20px; }

/* 抽屉内容块 */
.who { display: flex; align-items: center; gap: 16px; }
.avatar {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  flex: none;
  border-radius: var(--shape-full);
  background: var(--md-surface-container-high);
  border: 1px solid var(--md-outline-variant);
  color: var(--md-primary);
  font-size: 22px;
  font-weight: 500;
}
.who__text { min-width: 0; }
.who__name {
  font-size: var(--type-headline-small);
  font-weight: 400;
  line-height: 1.2;
  color: var(--md-on-surface);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.who__tags { display: flex; align-items: center; gap: 6px; margin-top: 6px; flex-wrap: wrap; }

.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--shape-xs);
  border: 1px solid var(--md-outline-variant);
  font-size: var(--type-body-small);
  color: var(--md-on-surface-variant);
  white-space: nowrap;
}
.tag--primary { background: var(--md-primary); border-color: var(--md-primary); color: var(--md-on-primary); font-weight: 500; }
.tag--warn { border-color: var(--md-error); color: var(--md-error); }

.section { margin-top: 24px; }
.section__title {
  margin: 0 0 8px;
  font-size: var(--type-body-small);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--md-on-surface-variant);
  text-transform: uppercase;
}
.rows { display: flex; flex-direction: column; border-radius: var(--shape-sm); overflow: hidden; background: var(--md-surface-container-high); }
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(73, 69, 79, 0.55);
  font-size: var(--type-body-medium);
}
.row:last-child { border-bottom: 0; }
.row__key { color: var(--md-on-surface-variant); font-size: var(--type-body-small); }
.row__val { color: var(--md-on-surface); text-align: right; }

.rel-list { display: flex; flex-direction: column; gap: 8px; }
/* 抽屉顶部动作行 */
.drawer__actions { display: flex; gap: 8px; margin-top: 18px; }
.drawer-btn {
  position: relative;
  overflow: hidden;
  flex: 1 1 0;
  height: 40px;
  border-radius: 20px;
  border: 1px solid var(--md-outline-variant);
  background: transparent;
  color: var(--md-on-surface-variant);
  font-family: inherit;
  font-size: var(--type-label-large);
  cursor: pointer;
  transition: background-color 200ms var(--ease-entrance), color 200ms var(--ease-entrance),
              border-color 200ms var(--ease-entrance), var(--morph);
}
.drawer-btn:hover { background: var(--md-state-hover); color: var(--md-on-surface); }
.drawer-btn:active { border-radius: var(--shape-xs); }
.drawer-btn--primary {
  background: var(--md-primary);
  border-color: var(--md-primary);
  color: var(--md-on-primary);
  font-weight: 500;
}
.drawer-btn--primary:hover { background: #DDD1F8; color: var(--md-on-primary); }

.rel {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 52px;
  padding: 8px 14px;
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-sm);
  background: transparent;
  color: var(--md-on-surface);
  cursor: pointer;
  text-align: left;
  font-size: var(--type-body-medium);
  transition: background-color 200ms var(--ease-entrance), border-color 200ms var(--ease-entrance);
}
.rel:hover { background: var(--md-state-hover); border-color: var(--md-outline); }
.rel:active { background: var(--md-state-press); }
.rel__role { color: var(--md-on-surface-variant); font-size: var(--type-body-small); min-width: 40px; }
.rel__name { font-weight: 500; }
.rel__meta { margin-left: auto; color: var(--md-on-surface-variant); font-size: var(--type-body-small); }
.rel__empty { color: var(--md-on-surface-variant); font-size: var(--type-body-small); padding: 4px 2px; }

.note {
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-low);
  color: var(--md-on-surface-variant);
  font-size: var(--type-body-small);
  line-height: 1.6;
  word-break: break-word;
}