/* ============================================================
   多商户在线客服系统 v2.0 —— 主样式
   设计语言：靛紫渐变主色 + 深色侧栏 + 柔光阴影 + 微交互动画
   ============================================================ */

:root{
  --brand:#5b5bd6;
  --brand2:#7c3aed;
  --brand-soft:#eef0ff;
  --accent:#06b6d4;
  --ink:#16192b;
  --sub:#6b7280;
  --mute:#9ca3af;
  --line:#e8eaf0;
  --bg:#f4f5fa;
  --card:#ffffff;
  --ok:#10b981;
  --warn:#f59e0b;
  --err:#ef4444;
  --side:#1c1f33;
  --side2:#252941;
  --r:14px;
  --r-sm:10px;
  --sh:0 1px 2px rgba(20,20,60,.05), 0 8px 24px rgba(20,20,60,.06);
  --sh-lg:0 4px 12px rgba(20,20,60,.07), 0 20px 48px rgba(20,20,60,.10);
  --t:.18s cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.65;
  -webkit-font-smoothing:antialiased; font-size:14px;
}
a{color:var(--brand);text-decoration:none;transition:var(--t)}
a:hover{opacity:.85}
img{max-width:100%;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#d3d6e0;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#b9bdcc}
::-webkit-scrollbar-track{background:transparent}

.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.hide{display:none !important}

/* ---------------------------------------------------- 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 20px;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;cursor:pointer;transition:var(--t);
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(91,91,214,.30)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:#fff;color:var(--brand);border-color:#d5d7f0}
.btn.ghost:hover{background:var(--brand-soft);box-shadow:none;border-color:var(--brand)}
.btn.sm{padding:5px 13px;font-size:12.5px;border-radius:8px}
.btn.lg{padding:13px 30px;font-size:15px;border-radius:var(--r)}
.btn.danger{background:#fff;color:var(--err);border-color:#fbc9c9}
.btn.danger:hover{background:#fef2f2;box-shadow:none}
.btn.ok{background:linear-gradient(120deg,#059669,#10b981)}
.btn.block{width:100%}

/* ---------------------------------------------------- 表单 */
.f{margin-bottom:14px}
.f>label{display:block;font-size:12.5px;color:var(--sub);margin-bottom:6px;font-weight:500}
.ipt{
  width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;transition:var(--t);font-size:14px;
}
.ipt:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,91,214,.12)}
textarea.ipt{resize:vertical;min-height:76px;line-height:1.6}
.row{display:flex;gap:10px;align-items:stretch}
.row .ipt{flex:1}
.capimg{height:41px;border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;background:#fff}

.alert{padding:10px 14px;border-radius:var(--r-sm);font-size:13px;margin-bottom:14px;display:none}
.alert.show{display:block;animation:shake .3s}
.alert.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.alert.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.hint{font-size:12px;color:var(--mute);margin-top:5px}

/* ---------------------------------------------------- 顶部导航 */
.nav{
  position:sticky;top:0;z-index:30;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:800;color:var(--ink)}
.logo i{
  width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;font-size:14px;font-style:normal;
}

/* ---------------------------------------------------- 官网 Hero */
.hero{
  position:relative;overflow:hidden;padding:78px 0 92px;text-align:center;color:#fff;
  background:linear-gradient(135deg,#4f46e5 0%,#7c3aed 55%,#a855f7 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 300px at 20% 10%, rgba(255,255,255,.22), transparent 60%),
    radial-gradient(500px 260px at 85% 30%, rgba(255,255,255,.14), transparent 60%);
}
.hero::after{
  content:"";position:absolute;left:-10%;right:-10%;bottom:-70px;height:140px;
  background:var(--bg);transform:skewY(-2.2deg);
}
.hero .wrap{position:relative;z-index:2}
.hero h1{font-size:40px;font-weight:800;letter-spacing:.6px;line-height:1.3;text-shadow:0 2px 20px rgba(0,0,0,.12)}
.hero p{margin-top:14px;font-size:16.5px;opacity:.94}
.hero .cta{margin-top:30px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn.white{background:#fff;color:var(--brand)}
.btn.white:hover{box-shadow:0 10px 28px rgba(0,0,0,.18)}
.btn.outline-w{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.btn.outline-w:hover{background:rgba(255,255,255,.2)}
.badge-pill{
  display:inline-block;padding:5px 14px;border-radius:20px;font-size:12.5px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);margin-bottom:20px;
}

/* ---------------------------------------------------- 区块 */
section{padding:56px 0}
.sec-h{text-align:center;margin-bottom:34px}
.sec-h h2{font-size:27px;font-weight:800;letter-spacing:.3px}
.sec-h p{color:var(--sub);margin-top:8px;font-size:14.5px}

.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;box-shadow:var(--sh);transition:var(--t);
}
.card.hover:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#dcd9f5}
.card h3{font-size:15.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.card p{font-size:13.5px;color:var(--sub);line-height:1.7}
.ico{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  font-size:19px;margin-bottom:13px;background:var(--brand-soft);
}
.ico.b{background:#e0f2fe;color:#0284c7}
.ico.g{background:#dcfce7;color:#16a34a}
.ico.o{background:#ffedd5;color:#ea580c}
.ico.p{background:#f3e8ff;color:#9333ea}
.ico.r{background:#ffe4e6;color:#e11d48}

/* 统计 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:34px 0 0}
.stat{text-align:center;padding:22px 12px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh)}
.stat .n{font-size:27px;font-weight:800;background:linear-gradient(120deg,var(--brand),var(--brand2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{font-size:12.5px;color:var(--sub);margin-top:4px}

/* 套餐 */
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:26px 22px;box-shadow:var(--sh);transition:var(--t);text-align:center;
}
.plan:hover{transform:translateY(-5px);box-shadow:var(--sh-lg)}
.plan.hot{border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,91,214,.12),var(--sh-lg)}
.plan .tag{
  position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;
  font-size:11.5px;padding:3px 14px;border-radius:20px;white-space:nowrap;
}
.plan .nm{font-size:15px;font-weight:700;color:var(--sub)}
.plan .pr{font-size:34px;font-weight:800;margin:10px 0 2px}
.plan .pr small{font-size:14px;font-weight:500;color:var(--mute)}
.plan .ds{font-size:12.5px;color:var(--mute);min-height:34px;margin-bottom:14px}

/* 对比表 */
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);font-size:13.5px}
.tbl th,.tbl td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:#f7f8fc;font-weight:600;color:var(--sub);font-size:12.5px}
.tbl tbody tr:hover{background:#fafbff}
.tbl tr:last-child td{border-bottom:none}
.tbl .no{color:var(--err)}
.tbl .yes{color:var(--ok);font-weight:600}

/* 页脚 */
.foot{margin-top:50px;padding:30px 0 40px;border-top:1px solid var(--line);color:var(--sub);font-size:12.5px}
.foot a{margin-right:18px;color:var(--sub)}
.foot a:hover{color:var(--brand)}

/* ---------------------------------------------------- 登录注册 */
.auth{min-height:100vh;display:grid;place-items:center;padding:36px 16px;position:relative;overflow:hidden}
.auth::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 380px at 15% 10%, #dfe3ff, transparent 60%),
    radial-gradient(600px 340px at 88% 20%, #f0e0ff, transparent 60%);
}
.auth-box{
  position:relative;width:100%;max-width:410px;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:32px;box-shadow:var(--sh-lg);animation:up .45s ease;
}
@keyframes up{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.auth-box h2{font-size:21px;text-align:center;font-weight:800}
.auth-box .sub{text-align:center;color:var(--sub);font-size:13px;margin:7px 0 22px}
.tabs{display:flex;background:#f3f4f8;border-radius:11px;padding:4px;margin-bottom:22px}
.tabs button{
  flex:1;padding:8px;border:none;background:none;border-radius:8px;cursor:pointer;
  font-size:14px;color:var(--sub);transition:var(--t);font-weight:500;
}
.tabs button.on{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 1px 4px rgba(0,0,0,.08)}

/* ---------------------------------------------------- 工作台 */
.wk{display:flex;height:100vh;overflow:hidden;background:#fff}
.side{
  width:288px;flex-shrink:0;background:var(--side);color:#e5e7eb;
  display:flex;flex-direction:column;
}
.side-hd{padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.side-hd .me{display:flex;align-items:center;gap:10px}
.avatar{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;font-weight:700;flex-shrink:0;
}
.side-hd .nm{font-weight:600;font-size:14.5px;color:#fff}
.side-hd .st{font-size:11.5px;color:#9ca3af}
.side-ops{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.side-ops button{
  flex:1;min-width:70px;padding:6px 8px;font-size:12px;border-radius:7px;cursor:pointer;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#e5e7eb;transition:var(--t);
}
.side-ops button:hover{background:rgba(255,255,255,.15)}

.side-search{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.07)}
.side-search input{
  width:100%;padding:8px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.13);
  background:rgba(255,255,255,.06);color:#e5e7eb;font-size:13px;
}
.side-search input::placeholder{color:#8b91a7}
.side-search input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.1)}

.conv-list{flex:1;overflow-y:auto}
.conv{
  padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.06);cursor:pointer;transition:var(--t);
  display:flex;gap:10px;align-items:flex-start;
}
.conv:hover{background:rgba(255,255,255,.05)}
.conv.on{background:rgba(91,91,214,.22);border-left:3px solid var(--brand);padding-left:13px}
.conv .av{
  width:34px;height:34px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:rgba(255,255,255,.12);color:#fff;font-size:12px;font-weight:600;
}
.conv .bd{flex:1;min-width:0}
.conv .t1{display:flex;justify-content:space-between;align-items:center;gap:6px}
.conv .nm{font-size:13.5px;font-weight:600;color:#f3f4f6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv .tm{font-size:11px;color:#8b91a7;flex-shrink:0}
.conv .pv{font-size:12px;color:#9ca3af;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.badge{
  background:var(--err);color:#fff;border-radius:10px;padding:0 6px;font-size:10.5px;
  min-width:17px;text-align:center;line-height:17px;flex-shrink:0;
}
.empty-tip{padding:36px 20px;text-align:center;color:#8b91a7;font-size:13px}

/* 主区 */
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.main-hd{
  padding:13px 20px;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.main-hd .who{font-weight:700;font-size:15px;display:flex;align-items:center;gap:9px}
.main-hd .meta{font-size:12px;color:var(--mute)}
.conn{font-size:11.5px;color:var(--mute);display:flex;align-items:center;gap:5px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block}
.dot.off{background:var(--mute)}

.msgs{flex:1;overflow-y:auto;padding:20px 22px}
.msg{display:flex;margin-bottom:14px;align-items:flex-end;gap:8px;animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.me{flex-direction:row-reverse}
.msg .bav{width:30px;height:30px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;font-size:11px}
.msg.them .bav{background:#dfe3f0;color:#5b6478}
.bub{
  max-width:66%;padding:9px 14px;border-radius:14px;font-size:14px;line-height:1.65;
  background:#fff;border:1px solid var(--line);word-break:break-word;white-space:pre-wrap;
  box-shadow:0 1px 2px rgba(20,20,60,.05);
}
.msg.me .bub{
  background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;border-color:transparent;
  border-bottom-right-radius:5px;
}
.msg.them .bub{border-bottom-left-radius:5px}
.bub .bt{font-size:10.5px;opacity:.6;margin-top:4px}
.sysmsg{text-align:center;margin:12px 0}
.sysmsg span{
  display:inline-block;padding:4px 12px;border-radius:12px;font-size:11.5px;
  background:rgba(0,0,0,.05);color:var(--mute);
}
.typing{height:18px;padding:0 22px;font-size:11.5px;color:var(--mute)}

.composer{border-top:1px solid var(--line);padding:12px 16px;background:#fff;display:flex;gap:10px;align-items:flex-end}
.composer textarea{
  flex:1;resize:none;border:1px solid var(--line);border-radius:12px;padding:10px 13px;
  font-size:14px;max-height:120px;min-height:42px;overflow-y:auto;line-height:1.5;background:#fff;
}
.composer textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,91,214,.1)}
.quick{display:flex;gap:6px;flex-wrap:wrap;padding:0 16px 10px;background:#fff}
.quick button{
  padding:4px 11px;font-size:12px;border-radius:14px;cursor:pointer;
  background:var(--brand-soft);color:var(--brand);border:1px solid #dcd9f5;transition:var(--t);
}
.quick button:hover{background:var(--brand);color:#fff}

/* 右栏信息 */
.info{
  width:250px;flex-shrink:0;background:#fff;border-left:1px solid var(--line);
  overflow-y:auto;padding:18px;
}
.info h4{font-size:13px;color:var(--sub);margin:16px 0 8px;font-weight:600}
.info h4:first-child{margin-top:0}
.info .kv{font-size:12.5px;color:var(--sub);line-height:1.9;word-break:break-all}
.info .kv b{color:var(--ink);font-weight:600}

/* ---------------------------------------------------- 访客聊天 */
.chat{
  display:flex;flex-direction:column;height:100vh;max-width:520px;margin:0 auto;
  background:var(--bg);border-left:1px solid var(--line);border-right:1px solid var(--line);
}
.chat-hd{
  padding:14px 18px;display:flex;align-items:center;gap:11px;color:#fff;
  background:linear-gradient(120deg,var(--brand),var(--brand2));
}
.chat-hd .nm{font-weight:700;font-size:15.5px}
.chat-hd .st{font-size:11.5px;opacity:.86;display:flex;align-items:center;gap:5px}

/* ---------------------------------------------------- 后台 */
.adm{min-height:100vh;background:var(--bg)}
.adm-nav{background:var(--side);color:#e5e7eb;padding:0 20px}
.adm-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.adm-nav .logo{color:#fff}
.adm-nav a{color:#c7cbd8;font-size:13.5px;margin-left:18px}
.adm-nav a:hover{color:#fff}
.adm-body{max-width:1100px;margin:0 auto;padding:24px 20px 60px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-bottom:22px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:17px;box-shadow:var(--sh)}
.kpi .l{font-size:12px;color:var(--sub)}
.kpi .v{font-size:25px;font-weight:800;margin-top:4px;
  background:linear-gradient(120deg,var(--brand),var(--brand2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);margin-bottom:20px;overflow:hidden}
.panel-hd{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.panel-hd h3{font-size:15px;font-weight:700}
.panel-bd{padding:18px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--sub)}
.pill{padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.pill.on{background:#dcfce7;color:#15803d}
.pill.off{background:#fee2e2;color:#b91c1c}
.pill.wait{background:#fef3c7;color:#b45309}
.pill.gray{background:#f1f2f7;color:var(--sub)}

/* 弹层 */
.mask{position:fixed;inset:0;background:rgba(16,18,32,.5);z-index:50;backdrop-filter:blur(2px)}
.modal{
  position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:51;
  width:92%;max-width:460px;background:#fff;border-radius:16px;padding:26px;
  box-shadow:0 24px 70px rgba(0,0,0,.3);max-height:86vh;overflow-y:auto;animation:up .28s ease;
}
.modal h3{font-size:17px;margin-bottom:16px}
.modal .ops{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}

/* 二维码卡片 */
.qrbox{text-align:center;padding:8px 0}
.qrbox img{width:190px;height:190px;margin:0 auto;border:1px solid var(--line);border-radius:12px;padding:8px;background:#fff}
.qrbox .url{
  margin-top:12px;padding:8px 12px;background:#f7f8fc;border-radius:8px;
  font-size:12px;color:var(--sub);word-break:break-all;
}

/* ---------------------------------------------------- 响应式 */
@media(max-width:1100px){
  .info{display:none}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .kpis{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:820px){
  .hero h1{font-size:29px}
  .grid3,.grid2,.stats{grid-template-columns:1fr 1fr}
  .side{width:210px}
  .tbl{font-size:12.5px}
  .tbl th,.tbl td{padding:9px 11px}
}
@media(max-width:600px){
  .hero{padding:56px 0 70px}
  .hero h1{font-size:24px}
  .hero p{font-size:14.5px}
  .grid3,.grid2,.stats,.grid4,.kpis{grid-template-columns:1fr}
  .wk{height:100dvh}
  .side{width:100%;position:absolute;z-index:20;height:100%;transform:translateX(-100%);transition:var(--t)}
  .side.show{transform:none;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .bub{max-width:78%}
  .adm-nav a{margin-left:12px;font-size:12.5px}
  section{padding:38px 0}
}