/* ──── 夜傀 · 微信风格聊天室 ──── */
/* === 变量（微信暗色系）=== */
:root {
  --bg-page: #111214;
  --bg-header: #1b1c1e;
  --bg-input: #1e1f22;
  --bg-chat: #0e0f10;
  --bg-bubble-self: #95ec69;
  --bg-bubble-other: #26272b;
  --bg-tabbar: #1b1c1e;
  --bg-card: #1b1c1e;
  --bg-hover: rgba(255,255,255,.06);
  --text-primary: #e4e6eb;
  --text-secondary: #8a8c90;
  --text-third: #606266;
  --text-on-green: #111;
  --border: #2e2f32;
  --green: #07c160;
  --red: #fa5151;
  --blue: #4da2f7;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{width:100%;height:100%;overflow:hidden;font-family:-apple-system,PingFang SC,Helvetica Neue,Microsoft YaHei,sans-serif;background:var(--bg-page);color:var(--text-primary);}
#app{width:100%;max-width:430px;height:100dvh;margin:0 auto;position:relative;overflow:hidden;background:var(--bg-page);}

/* === 页面切换 === */
.page{display:none;flex-direction:column;height:100%;width:100%;position:absolute;top:0;left:0;}
.page.active{display:flex;z-index:1;}

/* === 顶栏 === */
.header{display:flex;align-items:center;padding:6px 12px;background:var(--bg-header);flex-shrink:0;min-height:48px;}
.header-left,.header-right{min-width:60px;display:flex;align-items:center;gap:4px;}
.header-left{justify-content:flex-start;}
.header-right{justify-content:flex-end;}
.header-title{flex:1;text-align:center;font-size:17px;font-weight:600;}
.header-btn{width:34px;height:34px;border:none;background:transparent;cursor:pointer;font-size:22px;color:var(--text-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;}
.header-btn:active{background:var(--bg-hover);}

/* === 聊天列表页 === */
#searchBar{margin:6px 12px;padding:0 12px;border-radius:6px;background:var(--bg-input);display:flex;align-items:center;font-size:14px;flex-shrink:0;}
#searchBar .search-icon{font-size:14px;opacity:.5;margin-right:6px;}
#searchBar input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);padding:8px 0;font-size:14px;}
#searchBar input::placeholder{color:var(--text-third);}
#chatListWrap{flex:1;overflow-y:auto;}
#chatListWrap::-webkit-scrollbar{display:none;}
.chat-item{display:flex;align-items:center;padding:12px 16px;cursor:pointer;border-bottom:0.5px solid var(--border);}
.chat-item:active{background:var(--bg-hover);}
.chat-item.active{background:var(--bg-hover);}
.chat-avatar{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:30px;background:linear-gradient(135deg,#7c3aed,#c084fc);flex-shrink:0;}
.chat-info{flex:1;min-width:0;margin-left:12px;}
.chat-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px;}
.chat-name{font-size:16px;font-weight:500;}
.chat-time{font-size:11px;color:var(--text-third);}
.chat-bottom{display:flex;justify-content:space-between;align-items:center;}
.chat-preview{font-size:13px;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;}
.badge{background:var(--red);color:#fff;font-size:11px;padding:1px 6px;border-radius:10px;min-width:16px;text-align:center;margin-left:6px;}

/* === 聊天界面 === */
#chatHeader{background:var(--bg-header);position:relative;z-index:2;}
#chatBackBtn{font-size:28px;font-weight:300;}
#chatArea{flex:1;overflow-y:auto;padding:0 12px 8px;background:var(--bg-chat);scroll-behavior:smooth;}
#chatArea::-webkit-scrollbar{display:none;}
.net-status{text-align:center;font-size:12px;color:#fff;background:var(--red);padding:4px 0;flex-shrink:0;}
.date-divider{text-align:center;margin:12px 0 8px;font-size:12px;color:var(--text-third);}
.msg{display:flex;margin-bottom:6px;animation:fadeUp .25s ease-out;}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.msg-left{justify-content:flex-start;}
.msg-right{justify-content:flex-end;}
.msg .avatar{width:36px;height:36px;border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:20px;margin-top:4px;}
.msg-left .avatar{background:linear-gradient(135deg,#7c3aed,#c084fc);margin-right:8px;}
.msg-right .avatar{background:linear-gradient(135deg,#6366f1,#818cf8);margin-left:8px;order:1;}
.msg-content{max-width:72%;min-width:0;position:relative;}
.msg-name{font-size:11px;color:var(--text-third);margin-bottom:2px;padding-left:4px;}
.bubble{font-size:15px;line-height:1.5;padding:9px 14px;word-break:break-word;position:relative;border-radius:4px 10px 10px 10px;user-select:none;-webkit-user-select:none;}
.msg-left .bubble{background:var(--bg-bubble-other);color:var(--text-primary);}
.msg-right .bubble{background:var(--bg-bubble-self);color:var(--text-on-green);}
.msg-right .bubble a{color:#1a6e3a;}
.msg .time-tag{font-size:10px;color:var(--text-third);margin-top:3px;text-align:right;padding:0 2px;}
.msg .read-tag{font-size:10px;color:var(--blue);margin-left:4px;}
.msg-right .time-tag{text-align:right;}
.msg-left .time-tag{text-align:left;}

.typing .bubble{display:flex;align-items:center;gap:4px;padding:11px 16px;border-radius:12px;}
.typing-dot{width:7px;height:7px;border-radius:50%;background:#777;animation:dotBounce 1.2s ease-in-out infinite;}
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes dotBounce{0%,100%{opacity:.3}50%{opacity:1;transform:translateY(-4px)}}

/* === 输入栏 === */
.input-area{flex-shrink:0;background:var(--bg-header);padding:4px 8px calc(4px + var(--safe-bottom));display:flex;align-items:flex-end;gap:4px;}
.input-left,.input-right{display:flex;gap:2px;}
.input-btn{width:38px;height:38px;border:none;background:transparent;cursor:pointer;font-size:22px;display:flex;align-items:center;justify-content:center;border-radius:50%;flex-shrink:0;}
.input-btn:active{background:var(--bg-hover);}
.input-btn.recording{background:var(--red);color:#fff;font-size:14px;animation:pulseRec .8s ease-in-out infinite;}
@keyframes pulseRec{0%,100%{box-shadow:0 0 0 0 rgba(250,81,81,.4)}50%{box-shadow:0 0 0 8px rgba(250,81,81,0)}}
.input-box{flex:1;display:flex;align-items:flex-end;background:var(--bg-input);border-radius:6px;overflow:hidden;min-height:38px;}
#textInput{flex:1;border:none;outline:none;padding:8px 10px;font-size:16px;line-height:1.4;background:transparent;color:var(--text-primary);max-height:80px;}
#textInput::placeholder{color:var(--text-third);}
#sendBtn{padding:4px 14px;margin:3px;background:var(--green);border:none;border-radius:4px;color:#fff;font-size:15px;cursor:pointer;font-weight:500;flex-shrink:0;display:none;line-height:28px;}
#sendBtn.show{display:block;}

/* === 底栏 === */
.tabbar{display:flex;flex-shrink:0;background:var(--bg-tabbar);border-top:0.5px solid var(--border);padding:4px 0 calc(4px + var(--safe-bottom));}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;font-size:10px;color:var(--text-third);cursor:pointer;padding:2px 0;}
.tab-item.active{color:var(--green);}
.tab-item span{font-size:22px;line-height:1.2;}
.tab-item .tab-label{font-size:10px;margin-top:2px;}
.chat-tabbar{display:none;}
.chat-tabbar.show{display:flex;}

/* === 通话弹窗 === */
.call-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0d0d1a;z-index:999;display:none;flex-direction:column;align-items:center;}
.call-overlay.show{display:flex;}
.yk-stage{flex:1;width:100%;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 80%,#1a0a3e 0%,#0d0d1a 60%,#000 100%);}
.yk-stage canvas{width:100%;height:100%;object-fit:contain;max-width:430px;}
.yk-stage .self-video{position:absolute;top:60px;right:16px;width:100px;border-radius:12px;overflow:hidden;border:2px solid rgba(255,255,255,.2);}
.yk-stage .self-video video{width:100%;display:block;border-radius:11px;}
.call-bottom{flex-shrink:0;width:100%;text-align:center;padding:16px 0 calc(24px + var(--safe-bottom));background:linear-gradient(0deg,rgba(0,0,0,.6),transparent);}
.call-name{font-size:20px;font-weight:600;color:#e0d0ff;}
.call-status{font-size:13px;color:rgba(255,255,255,.4);margin-top:4px;}
.call-hangup{width:56px;height:56px;border-radius:50%;border:none;background:var(--red);color:#fff;font-size:24px;cursor:pointer;margin-top:12px;transition:transform .15s;display:inline-flex;align-items:center;justify-content:center;}
.call-hangup:active{transform:scale(.9);}

/* === 通讯录 === */
#contactsList{flex:1;overflow-y:auto;}
#contactsList::-webkit-scrollbar{display:none;}
.contact-section{padding:8px 0;}
.contact-item{display:flex;align-items:center;padding:12px 16px;cursor:pointer;}
.contact-item:active{background:var(--bg-hover);}
.contact-avatar{width:40px;height:40px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:24px;background:linear-gradient(135deg,#7c3aed,#c084fc);margin-right:12px;}
.contact-name{font-size:16px;}

/* === 发现 === */
#discoverList{flex:1;}
.discover-item{display:flex;align-items:center;padding:14px 16px;cursor:pointer;border-bottom:0.5px solid var(--border);}
.discover-item:active{background:var(--bg-hover);}
.di-icon{font-size:24px;margin-right:12px;width:28px;text-align:center;}

/* === 我 === */
#profileCard{display:flex;align-items:center;padding:20px 16px;background:var(--bg-card);cursor:pointer;margin-bottom:8px;}
#profileCard:active{background:var(--bg-hover);}
.profile-avatar{width:64px;height:64px;border-radius:12px;background:linear-gradient(135deg,#7c3aed,#c084fc);display:flex;align-items:center;justify-content:center;font-size:36px;flex-shrink:0;}
.profile-info{flex:1;margin-left:16px;}
.profile-name{font-size:20px;font-weight:600;}
.profile-id{font-size:13px;color:var(--text-secondary);margin-top:4px;}
.profile-arrow{font-size:22px;color:var(--text-third);}
#profileMenu{}
.profile-item{display:flex;align-items:center;padding:14px 16px;cursor:pointer;border-bottom:0.5px solid var(--border);background:var(--bg-card);}
.profile-item:active{background:var(--bg-hover);}
.pi-icon{font-size:22px;margin-right:12px;width:28px;text-align:center;}
.pi-arrow{font-size:18px;color:var(--text-third);margin-left:auto;}

/* === 设置 === */
#settingsList{flex:1;padding:8px 0;}
.setting-item{display:flex;align-items:center;padding:14px 16px;cursor:pointer;background:var(--bg-card);border-bottom:0.5px solid var(--border);font-size:15px;}
.setting-item:active{background:var(--bg-hover);}
.setting-item span:first-child{flex:1;}
.switch{position:relative;width:44px;height:24px;flex-shrink:0;margin-left:auto;}
.switch input{opacity:0;width:0;height:0;}
.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background:#444;border-radius:12px;transition:.3s;}
.slider::before{content:'';position:absolute;height:20px;width:20px;left:2px;bottom:2px;background:#fff;border-radius:50%;transition:.3s;}
.switch input:checked+.slider{background:var(--green);}
.switch input:checked+.slider::before{transform:translateX(20px);}

/* === 大图查看器 === */
.image-viewer{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.95);z-index:1000;display:flex;align-items:center;justify-content:center;}
.image-viewer.hidden{display:none;}
.image-viewer img{max-width:100%;max-height:100%;object-fit:contain;}
.viewer-close{position:fixed;top:12px;left:12px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;}

/* === 上下文菜单 === */
.context-menu{position:fixed;background:var(--bg-card);border-radius:12px;z-index:1001;padding:6px 0;box-shadow:0 4px 20px rgba(0,0,0,.5);min-width:140px;}
.context-menu.hidden{display:none;}
.cm-item{padding:12px 20px;cursor:pointer;font-size:14px;}
.cm-item:active{background:var(--bg-hover);}
.cm-danger{color:var(--red);}

/* === Toast === */
.toast{position:fixed;top:40%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.8);color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;z-index:2000;pointer-events:none;transition:opacity .3s;}
.toast.hidden{opacity:0;}
.toast.show{opacity:1;}

/* === 文件消息预览 === */
.file-preview{display:flex;align-items:center;gap:10px;padding:8px 0;}
.file-icon{font-size:28px;}
.file-info{font-size:13px;}
.file-name{font-weight:500;}
.file-size{color:var(--text-third);font-size:11px;}

/* === 位置消息卡片 === */
.location-card{display:flex;align-items:center;gap:8px;padding:4px 0;}
.location-icon{font-size:24px;}
.location-info{font-size:13px;color:var(--text-third);}

/* === 引用消息气泡 === */
.quote-bubble{border-left:3px solid var(--green);background:rgba(255,255,255,.05);padding:6px 10px;margin-bottom:4px;font-size:12px;color:var(--text-secondary);border-radius:2px;}

/* === 语音消息气泡 === */
.voice-msg{display:flex;align-items:center;gap:8px;padding:2px 0;}
.voice-icon{font-size:22px;}
.voice-wave{height:24px;display:flex;align-items:center;gap:2px;}
.voice-wave span{width:3px;background:#aaa;border-radius:2px;animation:voiceWave .8s ease-in-out infinite;}
.voice-wave span:nth-child(1){height:8px;animation-delay:0s}
.voice-wave span:nth-child(2){height:14px;animation-delay:.1s}
.voice-wave span:nth-child(3){height:18px;animation-delay:.2s}
.voice-wave span:nth-child(4){height:14px;animation-delay:.3s}
.voice-wave span:nth-child(5){height:8px;animation-delay:.4s}
@keyframes voiceWave{0%,100%{opacity:.4}50%{opacity:1}}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
@keyframes fadeOut{from{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.95)}}