/**
 * css/assistant.css —— 自动接待挂件
 *
 * 全部颜色 / 圆角 / 阴影都取自站点 css/style.css 的设计变量，
 * 不另起一套视觉体系（改 :root 就能整体跟着变）。
 *
 * 浮窗位置：左下角，叠在 .wa-fab（绿色 WhatsApp，bottom:20px）正上方，
 * 右下角留给 .cart-fab（黑色购物车）——三个浮窗互不遮挡。
 */

/* ---------------- 触发气泡 ---------------- */
.asst-fab {
  position: fixed;
  bottom: 88px; /* 20(wa-fab 底) + 56(wa-fab 高) + 12(间距) */
  left: 20px;
  z-index: 45;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  color: #fff;
  background: var(--accent-brand);
  box-shadow:
    0 18px 40px -14px oklch(62% 0.13 250 / 0.55),
    inset 0 0 0 1px oklch(100% 0 0 / 0.35);
  transition: transform 0.2s var(--ease-out-soft), opacity 0.2s;
}

.asst-fab:hover {
  transform: scale(1.05);
}

.asst-fab:active {
  transform: scale(0.95);
}

.asst-fab svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

/* 面板打开后气泡淡出，避免和面板重影 */
.asst-root.is-open .asst-fab {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.8);
}

/* ---------------- 引导气泡（首次访问自动出现） ---------------- */
.asst-teaser {
  position: fixed;
  left: 20px;
  bottom: 156px;
  z-index: 45;
  max-width: 240px;
  margin: 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  color: var(--foreground);
  font-size: 13px;
  line-height: 1.4;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.28s var(--ease-out-soft), transform 0.28s var(--ease-out-soft);
}

.asst-teaser.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  cursor: pointer;
}

/* ---------------- 面板 ---------------- */
.asst-panel {
  position: fixed;
  left: 20px;
  bottom: 156px;
  z-index: 46;
  display: none;
  flex-direction: column;
  width: 372px;
  max-width: calc(100vw - 40px);
  max-height: min(580px, calc(100vh - 220px));
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow-lift);
  transform-origin: bottom left;
}

.asst-root.is-open .asst-panel {
  display: flex;
  animation: asst-in 0.26s var(--ease-out-soft);
}

@keyframes asst-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------------- 头部 ---------------- */
.asst-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--foreground);
  color: var(--background);
  flex: 0 0 auto;
}

.asst-avatar {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--accent-brand);
  color: #fff;
}

.asst-avatar svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.asst-head-txt {
  min-width: 0;
  flex: 1 1 auto;
}

.asst-title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.asst-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 2px 0 0;
  font-size: 12px;
  line-height: 1.2;
  opacity: 0.72;
}

.asst-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #34d399;
}

.asst-close {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  color: inherit;
  background: oklch(100% 0 0 / 0.12);
  font-size: 16px;
  line-height: 1;
}

.asst-close:hover {
  background: oklch(100% 0 0 / 0.22);
}

/* ---------------- 对话区 ---------------- */
.asst-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px;
  background: var(--surface);
}

.asst-msg {
  max-width: 88%;
  margin: 0 0 10px;
  padding: 11px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.asst-msg-bot {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--foreground);
  border-bottom-left-radius: 5px;
}

.asst-msg-user {
  margin-left: auto;
  background: var(--accent-brand);
  color: #fff;
  border-bottom-right-radius: 5px;
}

.asst-msg a {
  color: inherit;
}

.asst-typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 12px 14px;
}

.asst-typing i {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--muted-foreground);
  animation: asst-blink 1.1s infinite ease-in-out;
}

.asst-typing i:nth-child(2) {
  animation-delay: 0.18s;
}

.asst-typing i:nth-child(3) {
  animation-delay: 0.36s;
}

@keyframes asst-blink {
  0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* ---------------- 快捷问题 ---------------- */
.asst-chips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 4px 0 12px;
}

.asst-chip {
  padding: 8px 10px;
  border: 1px solid oklch(90% 0.04 250);
  border-radius: 12px;
  background: oklch(97.5% 0.012 250);
  color: var(--foreground);
  font: inherit;
  font-size: 13px;
  line-height: 1.25;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.16s, background 0.16s, transform 0.16s;
}

.asst-chip:hover {
  border-color: var(--accent-brand);
  background: oklch(95% 0.03 250);
}

.asst-chip:active {
  transform: scale(0.97);
}

/* ---------------- 留资表单（兜底时展开） ---------------- */
.asst-lead {
  margin: 4px 0 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
}

.asst-lead-t {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
}

.asst-lead input,
.asst-lead textarea {
  display: block;
  width: 100%;
  margin: 0 0 8px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--background);
  color: var(--foreground);
  font: inherit;
  font-size: 13px;
}

.asst-lead textarea {
  min-height: 58px;
  resize: vertical;
}

.asst-lead input:focus,
.asst-lead textarea:focus {
  outline: 2px solid oklch(62% 0.13 250 / 0.45);
  outline-offset: 1px;
  border-color: var(--accent-brand);
}

.asst-lead-btn {
  width: 100%;
  padding: 10px 14px;
  border: 0;
  border-radius: 10px;
  background: var(--foreground);
  color: var(--background);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.asst-lead-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.asst-lead-note {
  margin: 8px 0 0;
  font-size: 11px;
  line-height: 1.4;
  color: var(--muted-foreground);
}

.asst-lead-err {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.4;
  color: #b91c1c;
}

/* ---------------- 输入区 ---------------- */
.asst-foot {
  flex: 0 0 auto;
  border-top: 1px solid var(--border);
  background: var(--card);
}

.asst-inputrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px 6px;
}

.asst-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--background);
  color: var(--foreground);
  font: inherit;
  font-size: 14px;
}

.asst-input:focus {
  outline: none;
  border-color: var(--accent-brand);
  box-shadow: 0 0 0 3px oklch(62% 0.13 250 / 0.16);
}

.asst-send {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: var(--accent-brand);
  color: #fff;
}

.asst-send svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.asst-handoff {
  display: block;
  padding: 0 16px 12px;
  color: var(--accent-brand);
  font-size: 12.5px;
  text-decoration: none;
}

.asst-handoff:hover {
  text-decoration: underline;
}

/* ---------------- 手机：底部抽屉 ---------------- */
@media (max-width: 640px) {
  .asst-panel {
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    max-width: none;
    max-height: 78vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    transform-origin: bottom center;
  }

  .asst-teaser {
    left: 16px;
    bottom: 148px;
  }

  .asst-fab {
    bottom: 80px;
    left: 16px;
  }
}

/* ---------------- 无障碍 / 打印 ---------------- */
@media (prefers-reduced-motion: reduce) {
  .asst-panel,
  .asst-teaser,
  .asst-fab,
  .asst-typing i {
    animation: none !important;
    transition: none !important;
  }
}

body.print-quote .asst-root,
body.print-quote .asst-teaser {
  display: none !important;
}