/* ==================== Bubbles AI 独立咨询页样式 ==================== */
/* 设计参考 bubbles-llm.cn/#/ai-chat：左侧品牌侧边栏 + 主聊天区 */
:root{
  --navy:#0F1A3A;--navy-2:#1A2547;--navy-3:#2A3870;
  --gold:#BEA672;--gold-light:#E8D5A3;--gold-deep:#A88B4F;
  --bg:#F7F8FA;--bg-2:#FFFFFF;--bg-3:#EEF1F6;
  --text-body:#1F2A44;--text-secondary:#5A6378;--text-muted:#8B95A8;--text-light:#B8C0D0;
  --border:#E4E8F0;--border-light:#EEF1F6;
  --radius:12px;--radius-sm:8px;--radius-full:999px;
  --shadow-sm:0 1px 3px rgba(15,26,58,0.06);
  --shadow:0 4px 16px rgba(15,26,58,0.08);
  --shadow-lg:0 8px 32px rgba(15,26,58,0.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text-body);font-size:15px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* ========== 主布局 ========== */
.chat-app{display:flex;height:100vh;width:100%;overflow:hidden}

/* ========== 左侧品牌侧边栏 ========== */
.chat-sidebar{
  width:320px;flex-shrink:0;
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);
  color:rgba(255,255,255,0.9);
  display:flex;flex-direction:column;padding:20px;
  position:relative;overflow-y:auto;
}
.chat-sidebar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:200px;
  background:radial-gradient(circle at 30% 0%,rgba(190,166,114,0.15),transparent 70%);
  pointer-events:none;
}
.sidebar-top{position:relative;z-index:1}
.sidebar-back{
  display:inline-block;color:rgba(255,255,255,0.6);font-size:13px;
  text-decoration:none;margin-bottom:20px;transition:color .2s;
}
.sidebar-back:hover{color:var(--gold-light)}
.sidebar-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.sidebar-logo{
  width:48px;height:48px;border-radius:12px;object-fit:cover;
  box-shadow:0 4px 14px rgba(190,166,114,0.4);
  border:1px solid rgba(232,213,163,0.3);
}
.sidebar-brand-name{font-size:22px;font-weight:800;letter-spacing:-0.3px;color:#fff}
.sidebar-brand-sub{font-size:11px;color:var(--gold-light);letter-spacing:2px;text-transform:uppercase;margin-top:2px}
.sidebar-status{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,0.8);margin-bottom:14px}
.status-dot{
  width:8px;height:8px;border-radius:50%;background:#4ADE80;
  box-shadow:0 0 8px rgba(74,222,128,0.6);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.sidebar-desc{font-size:13px;line-height:1.7;color:rgba(255,255,255,0.7);margin-bottom:20px}

/* 用量进度 */
.sidebar-usage{
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
  border-radius:var(--radius-sm);padding:14px;margin-bottom:20px;position:relative;z-index:1;
}
.usage-head{display:flex;justify-content:space-between;font-size:12px;color:rgba(255,255,255,0.7);margin-bottom:8px}
.usage-count b{color:var(--gold-light);font-size:15px;font-weight:700}
.usage-bar{height:6px;background:rgba(255,255,255,0.1);border-radius:3px;overflow:hidden}
.usage-fill{height:100%;background:linear-gradient(90deg,var(--gold-deep),var(--gold-light));border-radius:3px;transition:width .4s ease}
.usage-hint{font-size:11px;color:rgba(255,255,255,0.5);margin-top:6px}

/* 快捷提问 */
.sidebar-prompts{position:relative;z-index:1;margin-bottom:20px}
.prompts-title{font-size:12px;color:rgba(255,255,255,0.6);margin-bottom:10px}
.prompt-chip{
  display:block;width:100%;text-align:left;
  background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);
  color:rgba(255,255,255,0.85);padding:10px 12px;border-radius:var(--radius-sm);
  font-size:13px;cursor:pointer;margin-bottom:8px;transition:all .2s;
  font-family:inherit;
}
.prompt-chip:hover{
  background:rgba(190,166,114,0.15);border-color:rgba(190,166,114,0.4);
  color:#fff;transform:translateX(2px);
}

/* 历史会话列表 */
.sidebar-history{position:relative;z-index:1;margin-bottom:16px;display:flex;flex-direction:column;min-height:80px;max-height:280px}
.history-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.history-title{font-size:12px;color:rgba(255,255,255,0.6);font-weight:500}
.history-clear-all{background:none;border:none;color:rgba(255,255,255,0.4);font-size:14px;cursor:pointer;padding:2px 6px;border-radius:4px;transition:all .2s}
.history-clear-all:hover{color:#ff6b6b;background:rgba(255,107,107,0.1)}
.history-list{flex:1;overflow-y:auto;padding-right:4px}
.history-list::-webkit-scrollbar{width:4px}
.history-list::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:2px}
.history-list::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.25)}
.history-empty{font-size:12px;color:rgba(255,255,255,0.35);text-align:center;padding:16px 0}
.hist-item{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,0.04);border:1px solid transparent;border-radius:var(--radius-sm);padding:8px 10px;margin-bottom:6px;transition:all .2s;cursor:pointer}
.hist-item:hover{background:rgba(255,255,255,0.08)}
.hist-item.active{background:rgba(190,166,114,0.18);border-color:rgba(190,166,114,0.4)}
.hist-item-main{flex:1;min-width:0}
.hist-preview{font-size:12.5px;color:rgba(255,255,255,0.85);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.4}
.hist-meta{display:flex;align-items:center;gap:6px;margin-top:3px;font-size:10.5px;color:rgba(255,255,255,0.45)}
.hist-cnt{background:rgba(190,166,114,0.25);color:var(--gold-light);padding:0 6px;border-radius:8px;font-size:10px;line-height:14px}
.hist-del{flex-shrink:0;background:none;border:none;color:rgba(255,255,255,0.3);font-size:12px;cursor:pointer;padding:2px 4px;border-radius:4px;transition:all .2s;line-height:1}
.hist-del:hover{color:#ff6b6b;background:rgba(255,107,107,0.12)}

/* 底部二维码 */
.sidebar-bottom{margin-top:auto;padding-top:20px;position:relative;z-index:1;border-top:1px solid rgba(255,255,255,0.1)}
.qr-section{display:flex;gap:10px;margin-bottom:12px}
.qr-card{flex:1;background:rgba(255,255,255,0.05);border-radius:var(--radius-sm);padding:10px;text-align:center}
.qr-img{
  width:100%;aspect-ratio:1;object-fit:contain;background:#fff;border-radius:6px;
  margin-bottom:6px;display:block;
}
.qr-label{
  color:rgba(255,255,255,0.85);font-size:12px;font-weight:600;line-height:1.4;
}
.qr-label span{font-size:10px;font-weight:400;color:rgba(255,255,255,0.55);display:block;margin-top:2px}
.sidebar-contact{font-size:11px;color:rgba(255,255,255,0.5);text-align:center}

/* ========== 主聊天区 ========== */
.chat-main{flex:1;display:flex;flex-direction:column;background:var(--bg);min-width:0;overflow:hidden}
.chat-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;background:var(--bg-2);border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);flex-shrink:0;
}
.chat-header-info{display:flex;align-items:center;gap:12px}
.chat-header-avatar{width:42px;height:42px;border-radius:12px;object-fit:cover;box-shadow:0 2px 8px rgba(15,26,58,0.1)}
.chat-header-name{font-size:17px;font-weight:700;color:var(--text-body)}
.chat-header-status{font-size:12px;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.chat-header-status .dot{width:6px;height:6px;border-radius:50%;background:#4ADE80}
.chat-clear-btn{
  background:var(--bg-3);border:1px solid var(--border);color:var(--text-secondary);
  padding:8px 16px;border-radius:var(--radius-full);font-size:13px;cursor:pointer;
  transition:all .2s;font-family:inherit;
}
.chat-clear-btn:hover{background:var(--gold);color:#fff;border-color:var(--gold)}

/* 消息列表 */
.chat-messages{flex:1;overflow-y:auto;padding:28px;scroll-behavior:smooth}
.chat-messages::-webkit-scrollbar{width:6px}
.chat-messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--text-light)}

/* AI 消息 */
.msg-ai{display:flex;gap:12px;margin-bottom:24px;align-items:flex-start}
.msg-ai-avatar{width:36px;height:36px;border-radius:10px;object-fit:cover;flex-shrink:0;box-shadow:0 2px 6px rgba(15,26,58,0.08)}
.msg-ai-bubble{
  background:var(--bg-2);border:1px solid var(--border);
  padding:14px 18px;border-radius:4px 16px 16px 16px;
  max-width:75%;box-shadow:var(--shadow-sm);font-size:14.5px;line-height:1.7;color:var(--text-body);
}
.msg-ai-bubble p{margin-bottom:8px}
.msg-ai-bubble p:last-child{margin-bottom:0}
.msg-ai-bubble strong{color:var(--navy);font-weight:600}
.msg-ai-bubble code{background:var(--bg-3);padding:2px 6px;border-radius:4px;font-size:13px;font-family:Monaco,Consolas,monospace}
.retry-btn{
  margin-top:8px;background:var(--bg-3);border:1px solid var(--border);color:var(--text-secondary);
  padding:4px 12px;border-radius:var(--radius-full);font-size:12px;cursor:pointer;font-family:inherit;
}
.retry-btn:hover{background:var(--gold);color:#fff}

/* 用户消息 */
.msg-user{display:flex;justify-content:flex-end;margin-bottom:24px}
.msg-user-bubble{
  background:linear-gradient(135deg,var(--navy-3),var(--navy));color:#fff;
  padding:12px 18px;border-radius:16px 16px 4px 16px;
  max-width:75%;box-shadow:var(--shadow);font-size:14.5px;line-height:1.6;
}

/* 打字动画 */
.typing .typing-dots{display:flex;gap:4px;padding:4px 0}
.typing .typing-dots span{width:8px;height:8px;border-radius:50%;background:var(--gold);animation:typingBounce 1.4s infinite}
.typing .typing-dots span:nth-child(2){animation-delay:0.2s}
.typing .typing-dots span:nth-child(3){animation-delay:0.4s}
.typing-text{font-size:12px;color:var(--text-light);margin-top:4px}
@keyframes typingBounce{0%,60%,100%{transform:translateY(0);opacity:0.4}30%{transform:translateY(-6px);opacity:1}}
.typing-cursor::after{content:"▊";animation:blink 1s infinite;color:var(--gold);margin-left:2px}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* 输入区 */
.chat-input-area{padding:16px 28px 20px;background:var(--bg-2);border-top:1px solid var(--border);flex-shrink:0}
.chat-input-wrap{display:flex;align-items:flex-end;gap:10px;background:var(--bg);border:1px solid var(--border);border-radius:16px;padding:8px 8px 8px 16px;transition:all .2s}
.chat-input-wrap:focus-within{border-color:var(--gold);box-shadow:0 0 0 3px rgba(190,166,114,0.12)}
.chat-input{
  flex:1;border:none;background:none;outline:none;resize:none;
  font-size:14.5px;line-height:1.5;color:var(--text-body);
  font-family:inherit;max-height:140px;padding:6px 0;
}
.chat-input::placeholder{color:var(--text-light)}
.chat-send-btn{
  width:38px;height:38px;flex-shrink:0;border:none;border-radius:12px;
  background:linear-gradient(135deg,var(--gold-deep),var(--gold-light));color:#fff;
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;
}
.chat-send-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px rgba(190,166,114,0.4)}
.chat-send-btn:disabled{background:var(--border);color:var(--text-light);cursor:not-allowed}
.chat-input-hint{font-size:11px;color:var(--text-light);margin-top:8px;text-align:center}

/* ========== 响应式：移动端隐藏侧边栏 ========== */
@media(max-width:900px){
  .chat-sidebar{display:none}
  .chat-header{padding:12px 16px}
  .chat-messages{padding:16px}
  .chat-input-area{padding:12px 16px 16px}
  .msg-ai-bubble,.msg-user-bubble{max-width:88%;font-size:14px}
}