/* ============================================================================
   wb-ui · ai-agent-input（Agent 输入框 / PromptInput）
   1:1 移植自 aicss.dev PromptInput.module.css（fetched 2026-08-13）。
   形态：白卡 frame（0.5px hairline + 双层投影）、contentEditable 输入区、
   附件 chips、底部按钮行（+ 菜单钮 / enhance pill / 发送钮）；enhancing 时
   conic 渐变环绕边框旋转 + 文本 shimmer。菜单/技能 pill/flyout/popover 的
   样式类全量入库（后续接线用），行为层只接线 MVP 核心交互。
   整卡 data-state 映射（输入端组件，无消费型 run event，见详情页③）：
   empty（无输入，placeholder）/ ok（有内容，可发送）/
   running（已提交，run 进行中→spinner）/ error（发送失败，hairline 染 danger）。
   零裸色，全走 --wbui-*（含 --wbui-pi-* 组件专属值）。
   ========================================================================== */

.wbui-prompt-input {
  width: 100%;
  max-width: 420px;             /* 上游原值 */
  font-family: var(--wbui-sans);
}

.wbui-pi-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px 10px 10px;
  background: var(--wbui-surface);
  /* 透明 border 保住 enhancing ::after 依赖的盒几何；可见的 0.5px hairline
     走投影第一层，保证四边均匀 */
  border: 0.5px solid transparent;
  border-radius: 12px;
  box-shadow: var(--wbui-pi-ring);
}
.wbui-pi-frame:has(.wbui-pi-chips) { padding-top: 10px; }
.wbui-prompt-input[data-state="error"] .wbui-pi-frame {
  box-shadow: 0 0 0 1px var(--wbui-danger), var(--wbui-pi-ring);
}

/* enhancing：conic 渐变环绕边框旋转（上游 @property 动画） */
@property --wbui-pi-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}
.wbui-pi-frame[data-enhancing]::after {
  content: "";
  position: absolute;
  inset: -0.5px;
  border-radius: 12.5px;
  border: 0.75px solid transparent;
  background: conic-gradient(
      from var(--wbui-pi-angle),
      var(--wbui-pi-conic-1), var(--wbui-pi-conic-2), var(--wbui-pi-conic-3), var(--wbui-pi-conic-4), var(--wbui-pi-conic-1)
    )
    border-box;
  -webkit-mask: linear-gradient(var(--wbui-mask-opaque) 0 0) padding-box, linear-gradient(var(--wbui-mask-opaque) 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: wbui-pi-border-spin 1.1s linear infinite,
    wbui-pi-border-in 220ms var(--wbui-ease-smooth) both;
  pointer-events: none;
}
@keyframes wbui-pi-border-spin { to { --wbui-pi-angle: 360deg; } }
@keyframes wbui-pi-border-in { from { opacity: 0; } to { opacity: 1; } }

/* 输入区（contentEditable） */
.wbui-pi-editor-wrap { position: relative; }
.wbui-pi-field {
  position: relative;
  width: 100%;
  margin: 0;
  outline: 0;
  background: transparent;
  color: var(--wbui-ink);
  font: inherit;
  font-size: 12px;
  line-height: 18px;
  letter-spacing: -0.12px;
  min-height: 18px;
  max-height: 160px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.wbui-pi-field[data-empty]::before {
  content: attr(data-placeholder);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--wbui-ink);
  opacity: 0.5;
  pointer-events: none;
}

/* enhancing：正文 shimmer（与 thinking 系同款曲线断点） */
.wbui-pi-enhancing-text {
  font-size: 12px;
  line-height: 18px;
  letter-spacing: -0.12px;
  word-break: break-word;
  color: transparent;
  -webkit-text-fill-color: transparent;
  background: linear-gradient(
    90deg,
    var(--wbui-pi-shimmer-ink) 0%, var(--wbui-pi-shimmer-ink) 30%,
    var(--wbui-pi-shimmer-fade) 45%, var(--wbui-pi-shimmer-fade) 55%,
    var(--wbui-pi-shimmer-ink) 70%, var(--wbui-pi-shimmer-ink) 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: wbui-pi-shine 2.25s cubic-bezier(0.25, 0.1, 0.25, 1) infinite;
}
@keyframes wbui-pi-shine {
  0%, 18% { background-position: 100% 0; }
  82%, 100% { background-position: 0% 0; }
}

/* 行内技能 pill（保留样式，行为层暂不接线） */
.wbui-pi-skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  height: 16px;
  padding: 0 0 0 5px;
  margin: 0 2px;
  border-radius: 999px;
  background: var(--wbui-pi-pill-bg);
  color: var(--wbui-pi-pill-ink);
  font-size: 11px;
  font-weight: var(--wbui-fw-medium);
  line-height: 1;
  letter-spacing: -0.12px;
  white-space: nowrap;
  position: relative;
  top: -1px;
  vertical-align: baseline;
  user-select: none;
}
.wbui-pi-skill-pill-x {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  opacity: 0.65;
  cursor: pointer;
  transition: opacity 150ms var(--wbui-ease-smooth), background 150ms var(--wbui-ease-smooth);
}
.wbui-pi-skill-pill-x:hover { opacity: 1; background: var(--wbui-pi-pill-bg-hover); }

/* 附件 chips */
.wbui-pi-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: -6px; }
.wbui-pi-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  max-width: 100%;
  padding: 3px 4px 3px 5px;
  border-radius: 999px;
  background: var(--wbui-surface);
  border: 0.5px solid var(--wbui-border);
  box-shadow: var(--wbui-pi-chip-shadow);
  color: var(--wbui-ink);
  font-size: 11px;
  line-height: 14px;
  animation: wbui-pi-chip-in 260ms var(--wbui-ease-smooth) both;
}
.wbui-pi-chip[data-exit] { animation: wbui-pi-pill-out 180ms var(--wbui-ease-smooth) both; pointer-events: none; }
.wbui-pi-chip-icon { display: inline-flex; flex: none; color: var(--wbui-ink-2); }
.wbui-pi-chip-name { max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wbui-pi-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: -2px;
  width: 15px;
  height: 15px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--wbui-ink-2);
  cursor: pointer;
  transition: background 150ms var(--wbui-ease-smooth), color 150ms var(--wbui-ease-smooth);
}
.wbui-pi-chip-remove:hover { background: var(--wbui-pi-chip-x-hover); color: var(--wbui-ink); }
@keyframes wbui-pi-chip-in {
  from { opacity: 0; transform: translateY(4px); filter: blur(2px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* 按钮行 */
.wbui-pi-row { display: flex; align-items: center; justify-content: space-between; }
.wbui-pi-plus-wrap { position: relative; display: flex; }
.wbui-pi-right { display: flex; align-items: center; gap: 6px; }

/* 圆形软按钮：填充在 ::before 上，按压只缩容器不缩图标 */
.wbui-pi-icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex: none;
  border: 0;
  background: transparent;
  color: var(--wbui-ink);
  cursor: pointer;
  font-family: inherit;
}
.wbui-pi-icon-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--wbui-pi-btn-fill);
  transition: background 150ms var(--wbui-ease-smooth), transform 150ms var(--wbui-ease-smooth);
}
.wbui-pi-icon-btn:hover::before { background: var(--wbui-pi-btn-fill-hover); }
.wbui-pi-icon-btn:active::before { transform: scale(0.98); }
.wbui-pi-icon-btn > svg { position: relative; }
.wbui-prompt-input svg { stroke-width: 1.5px; }

.wbui-pi-plus-icon { position: relative; display: inline-flex; transition: transform 200ms var(--wbui-ease-spring); }
.wbui-pi-plus[data-open]::before { background: var(--wbui-pi-btn-fill-open); }
.wbui-pi-plus[data-open] .wbui-pi-plus-icon { transform: rotate(45deg); }

/* enhance / revert pill */
.wbui-pi-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border: 0;
  background: transparent;
  color: var(--wbui-ink);
  font-size: 11px;
  line-height: 12px;
  font-weight: var(--wbui-fw-medium);
  font-family: inherit;
  white-space: nowrap;
  cursor: pointer;
  animation: wbui-pi-pill-in 260ms var(--wbui-ease-smooth) both;
}
.wbui-pi-pill::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--wbui-pi-btn-fill);
  transition: background 150ms var(--wbui-ease-smooth), transform 150ms var(--wbui-ease-smooth);
}
.wbui-pi-pill:hover::before { background: var(--wbui-pi-btn-fill-hover); }
.wbui-pi-pill:active::before { transform: scale(0.98); }
@keyframes wbui-pi-pill-in {
  from { opacity: 0; transform: scale(0.96); filter: blur(2px); }
  to { opacity: 1; transform: scale(1); filter: blur(0); }
}
@keyframes wbui-pi-pill-out {
  from { opacity: 1; transform: scale(1); filter: blur(0); }
  to { opacity: 0; transform: scale(0.96); filter: blur(2px); }
}

/* 发送钮：空置灰，可发送反色实底 */
.wbui-pi-send { color: var(--wbui-ink-2); }
.wbui-pi-send:disabled { cursor: default; }
.wbui-pi-send:disabled:active::before { transform: none; }
.wbui-pi-send.is-active { color: var(--wbui-on-accent); }
.wbui-pi-send.is-active::before { background: var(--wbui-accent); }
.wbui-pi-send.is-active:hover::before { background: var(--wbui-accent-hover); }

.wbui-pi-spinner-btn { cursor: default; }
.wbui-pi-spinner { position: relative; color: var(--wbui-ink-2); animation: wbui-pi-spin 0.7s linear infinite; }
@keyframes wbui-pi-spin { to { transform: rotate(360deg); } }

/* “+”菜单容器与条目（样式入库，行为层暂不接线菜单内容） */
.wbui-pi-menu {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 0;
  z-index: 20;
  width: 180px;
  padding: 3px;
  background: var(--wbui-surface);
  border: 0.5px solid var(--wbui-border);
  border-radius: 10px;
  box-shadow: var(--wbui-pi-menu-shadow);
  transform-origin: bottom left;
  animation: wbui-pi-menu-in 200ms var(--wbui-ease-smooth) both;
}
.wbui-pi-menu-item {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  height: 26px;
  padding: 0 7px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--wbui-ink);
  font-size: 11px;
  font-weight: var(--wbui-fw-regular);
  line-height: 12px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.wbui-pi-menu-item:hover { background: var(--wbui-pi-btn-fill); }
.wbui-pi-menu-item:active { background: var(--wbui-pi-btn-fill-open); }
.wbui-pi-menu-icon { display: inline-flex; flex: none; color: var(--wbui-ink-2); }
.wbui-pi-menu-name { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wbui-pi-menu-divider { height: 0.5px; margin: 4px -3px; background: var(--wbui-border); }
.wbui-pi-menu-label { padding: 3px 7px; font-size: 11px; font-weight: var(--wbui-fw-regular); color: var(--wbui-ink-2); }
@keyframes wbui-pi-menu-in {
  from { opacity: 0; transform: translateY(6px) scale(0.98); filter: blur(2px); }
  to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

@media (prefers-reduced-motion: reduce) {
  .wbui-pi-icon-btn::before, .wbui-pi-pill::before, .wbui-pi-menu-item, .wbui-pi-chip-remove, .wbui-pi-plus-icon { transition: none; }
  .wbui-pi-chip, .wbui-pi-chip[data-exit], .wbui-pi-pill, .wbui-pi-menu { animation: none; }
  .wbui-pi-enhancing-text, .wbui-pi-frame[data-enhancing]::after { animation: none; }
  .wbui-pi-spinner { animation-duration: 1.4s; }
}