@import '../../styles/variables.scss';
@import '../../styles/mixins.scss';

.ai-chat-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: $bg;
}

/* ─── 导航栏 ─── */
.ai-chat-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px 12px;
  background: $card;
  border-bottom: 1px solid $bd-l;
  flex-shrink: 0;
}

.ai-chat-nav__title-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ai-chat-nav__title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: var(--tk-font-body);
  font-weight: 700;
  color: $tx;
}

.ai-chat-nav__online {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}

.ai-chat-nav__dot {
  width: 6px;
  height: 6px;
  border-radius: 3px;
  background: $acc;
}

.ai-chat-nav__online-text {
  font-size: var(--tk-font-micro);
  color: $acc;
}

/* ─── 欢迎状态 ─── */
.ai-chat-welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 20px;
}

.ai-chat-welcome__avatar {
  width: 72px;
  height: 72px;
  border-radius: 36px;
  background: linear-gradient(135deg, $pri, $pri-d);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(196, 98, 58, 0.25);
}

.ai-chat-welcome__avatar-char {
  color: $white;
  font-size: var(--tk-font-num-lg);
  font-weight: 600;
  font-family: Georgia, 'Times New Roman', serif;
}

.ai-chat-welcome__greeting {
  font-size: var(--tk-font-body);
  font-weight: 600;
  color: $tx;
  margin-top: 16px;
}

.ai-chat-welcome__desc {
  font-size: var(--tk-font-cap);
  color: $tx3;
  text-align: center;
  margin-top: 6px;
  line-height: 1.6;
  white-space: pre-line;
}

.ai-chat-welcome__divider {
  width: 32px;
  height: 1px;
  background: $bd;
  margin: 20px 0 16px;
}

.ai-chat-welcome__hint {
  font-size: var(--tk-font-micro);
  color: $tx3;
  margin-bottom: 12px;
}

.ai-chat-welcome__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 320px;
}

.ai-chat-welcome__pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: $card;
  border-radius: $r;
  border: 1px solid $bd-l;

  &:active {
    opacity: var(--tk-touch-feedback-opacity);
  }
}

.ai-chat-welcome__pill-icon {
  font-size: var(--tk-font-body-sm);
}

.ai-chat-welcome__pill-text {
  font-size: var(--tk-font-cap);
  color: $tx2;
}

/* ─── 对话区域 ─── */
.ai-chat-body {
  flex: 1;
  width: 100%;
  box-sizing: border-box;
  padding: 16px;
}

/* ─── 消息行 ─── */
.ai-msg {
  display: flex;
  align-items: flex-start;
  margin-bottom: 8px;
  width: 100%;

  &--self {
    justify-content: flex-end;
  }

  &--ai {
    gap: 10px;
  }
}

/* ─── AI 头像 ─── */
.ai-msg__avatar {
  width: 36px;
  height: 36px;
  border-radius: 18px;
  background: linear-gradient(135deg, $pri, $pri-d);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ai-msg__avatar-char {
  color: $white;
  font-size: var(--tk-font-body-sm);
  font-weight: 600;
}

/* ─── 消息气泡 ─── */
.ai-msg__bubble {
  max-width: 75%;
  padding: 10px 14px;
  box-sizing: border-box;

  &--ai {
    background: $card;
    border-radius: 4px 16px 16px 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  }

  &--self {
    background: $pri-l;
    border-radius: 16px 4px 16px 16px;
    max-width: 80%;
  }
}

.ai-msg__text {
  display: block;
  width: 100%;
  font-size: var(--tk-font-body-sm);
  color: $tx;
  line-height: 1.6;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
}

/* ─── 打字指示器 ─── */
.ai-msg__typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 4px 0;
}

.ai-msg__dot {
  width: 6px;
  height: 6px;
  border-radius: 3px;
  background: $tx3;
  animation: ai-typing-pulse 1.4s infinite;

  &:nth-child(2) {
    animation-delay: 0.2s;
  }

  &:nth-child(3) {
    animation-delay: 0.4s;
  }
}

@keyframes ai-typing-pulse {
  0%, 80%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ─── 底部输入栏 ─── */
.ai-chat-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  background: $card;
  border-top: 1px solid $bd-l;
  flex-shrink: 0;
}

.ai-chat-bar__input {
  flex: 1;
  height: 40px;
  background: $surface-alt;
  border: none;
  border-radius: 20px;
  padding: 0 14px;
  font-size: var(--tk-font-body-sm);
  color: $tx;
}

.ai-chat-bar__placeholder {
  color: $tx3;
  font-size: var(--tk-font-body-sm);
}

.ai-chat-bar__send {
  width: 40px;
  height: 40px;
  border-radius: 20px;
  background: $pri;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;

  &--disabled {
    opacity: 0.5;
  }

  &:active:not(&--disabled) {
    opacity: var(--tk-touch-feedback-opacity);
  }
}

.ai-chat-bar__send-icon {
  color: $white;
  font-size: var(--tk-font-body-lg);
  font-weight: 700;
}