/* ============================================================
   MOXCLOUD 工单系统 — 黑白简约主题
   ============================================================ */
:root{
  --bg:#f7f7f5;
  --surface:#ffffff;
  --ink:#111111;
  --ink-2:#4d4d4d;
  --ink-3:#8f8f8f;
  --line:#e8e8e6;
  --line-2:#d9d9d7;
  --danger:#c92a2a;
  --radius:12px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.05);
  --shadow-md:0 1px 2px rgba(0,0,0,.04),0 12px 32px -14px rgba(0,0,0,.14);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:#111;color:#fff}
.wrap{max-width:780px;margin:0 auto;padding:0 20px}

@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes draw{to{stroke-dashoffset:0}}

/* ------------------------------------------------ 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{width:34px;height:34px;background:var(--ink);color:#fff;border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;flex:none}
.brand-text{font-weight:700;letter-spacing:.6px;font-size:15px;display:flex;flex-direction:column;line-height:1.2}
.brand-text i{font-style:normal;font-weight:400;font-size:10.5px;color:var(--ink-3);letter-spacing:2.5px}
.header-nav{display:flex;gap:6px}
.header-nav a{padding:8px 15px;border-radius:99px;font-size:14px;color:var(--ink-2);transition:.18s}
.header-nav a:hover{color:var(--ink);background:#f1f1ef}
.header-nav a.active{color:var(--ink);font-weight:600;background:#efefec}

/* ------------------------------------------------ 通用组件 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:10px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;transition:all .18s ease;text-decoration:none;user-select:none;line-height:1.4}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#2c2c2c}
.btn-primary:active{transform:scale(.985)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-ghost:active{transform:scale(.985)}
.btn-danger{background:#fff;color:var(--danger);border-color:#eccccc}
.btn-danger:hover{border-color:var(--danger);background:#fdf4f4}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-lg{padding:14px 30px;font-size:15px;border-radius:12px}
.btn-sm{padding:8px 15px;font-size:13px;border-radius:9px}
.btn-block{width:100%}

.input{width:100%;padding:13px 16px;border:1px solid var(--line-2);border-radius:10px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink);transition:border-color .18s,box-shadow .18s;outline:none}
.input::placeholder{color:#b5b5b3}
.input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(17,17,17,.07)}
textarea.input{resize:vertical;min-height:170px;line-height:1.75}
select.input{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:36px;cursor:pointer}

/* ------------------------------------------------ 用户端:首页 */
.hero{text-align:center;padding:58px 0 38px}
.hero h1{font-size:36px;font-weight:800;letter-spacing:-.8px}
.hero p{color:var(--ink-2);margin-top:12px;font-size:15px}
.hero b{color:var(--ink);border-bottom:2px solid var(--ink);font-weight:700;padding-bottom:1px}
.hero-sm{padding:44px 0 26px}
.hero-sm h1{font-size:27px}
.hero-sm p{margin-top:8px;font-size:14px;color:var(--ink-3)}

.form-card{padding:34px}
.field{margin-bottom:26px}
.field:last-of-type{margin-bottom:30px}
.field-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:9px;gap:10px}
.field-head label{font-size:14px;font-weight:650}
.req{color:var(--ink);font-weight:700}
.opt{font-size:11.5px;color:var(--ink-3);border:1px solid var(--line-2);padding:1px 8px;border-radius:99px;margin-left:7px;font-weight:400;vertical-align:1px}
.counter{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums}

.dropzone{border:1.5px dashed var(--line-2);border-radius:12px;padding:30px 20px;text-align:center;cursor:pointer;transition:.2s;background:#fbfbfa;color:var(--ink-2)}
.dropzone:hover,.dropzone.drag{border-color:var(--ink);background:#fff;color:var(--ink)}
.dropzone.drag{transform:scale(1.004)}
.dropzone svg{opacity:.75}
.dropzone p{font-size:14px;margin-top:9px;font-weight:500}
.dz-hint{display:block;font-size:12px;color:var(--ink-3);margin-top:3px;font-weight:400}
.dropzone.compact{padding:14px;display:flex;align-items:center;justify-content:center;gap:9px;font-size:13.5px}
.dropzone.compact p{margin:0;font-size:13.5px}

.file-list{list-style:none;margin-top:10px;display:flex;flex-direction:column;gap:8px}
.file-item{display:flex;align-items:center;gap:10px;padding:10px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:13px;animation:fadeUp .25s ease}
.file-item svg{flex:none;color:var(--ink-3)}
.file-item .fname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-item .fsize{color:var(--ink-3);font-size:12px;flex:none;font-variant-numeric:tabular-nums}
.file-item .fdel{flex:none;width:24px;height:24px;border:none;background:transparent;border-radius:6px;color:var(--ink-3);cursor:pointer;font-size:16px;line-height:1;transition:.15s}
.file-item .fdel:hover{background:#f3f3f1;color:var(--danger)}

.form-note{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:12.5px;color:var(--ink-3);line-height:1.5}
.form-note svg{flex:none}

/* 步骤条 */
.steps{display:flex;align-items:center;justify-content:center;gap:16px;padding:46px 0 80px;flex-wrap:wrap}
.step{display:flex;align-items:center;gap:13px}
.step-num{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--ink);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:none}
.step b{display:block;font-size:14px;line-height:1.4}
.step small{color:var(--ink-3);font-size:12px}
.step-line{width:46px;height:1px;background:var(--line-2);flex:none}

/* ------------------------------------------------ 用户端:提交成功 */
.success-wrap{max-width:540px;margin:70px auto 90px;text-align:center}
.check-svg{width:76px;height:76px;stroke:var(--ink);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.check-circle{stroke-dasharray:151;stroke-dashoffset:151;animation:draw .55s ease-out forwards}
.check-mark{stroke-dasharray:36;stroke-dashoffset:36;animation:draw .35s .5s ease-out forwards}
.success-wrap h2{font-size:27px;margin-top:22px;letter-spacing:-.4px}
.success-sub{color:var(--ink-2);margin-top:9px}
.notice{display:inline-flex;align-items:center;gap:9px;margin-top:24px;padding:12px 22px;background:var(--ink);color:#fff;border-radius:99px;font-size:14px;box-shadow:var(--shadow-md)}
.notice svg{flex:none}
.code-box{margin-top:28px;border:1px solid var(--line);border-radius:14px;background:#fff;padding:26px 22px;box-shadow:var(--shadow-sm)}
.code-label{font-size:11.5px;color:var(--ink-3);letter-spacing:2.5px}
.code-row{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:9px}
.code-row span{font-size:31px;font-weight:800;letter-spacing:2px;font-variant-numeric:tabular-nums}
.code-hint{font-size:12.5px;color:var(--ink-3);margin-top:13px;line-height:1.7}
.success-actions{display:flex;gap:12px;justify-content:center;margin-top:30px;flex-wrap:wrap}

/* ------------------------------------------------ 用户端:查询 */
.track-card{padding:28px}
.track-row{display:flex;gap:12px}
.track-row .input{flex:1;font-variant-numeric:tabular-nums;letter-spacing:.5px}
.track-hint{font-size:12.5px;color:var(--ink-3);margin-top:13px}

/* ------------------------------------------------ 用户端:我的工单 */
.nav-badge{font-style:normal;background:var(--ink);color:#fff;font-size:11px;min-width:17px;height:17px;border-radius:99px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px;margin-left:6px;vertical-align:1.5px;font-variant-numeric:tabular-nums;font-weight:600}
.header-nav a.active .nav-badge{background:#fff;color:var(--ink)}
.rec-card{padding:6px 0}
.rec-item{display:flex;align-items:center;gap:14px;padding:17px 24px;border-bottom:1px solid #f1f1ef;cursor:pointer;transition:background .15s}
.rec-item:last-child{border-bottom:none}
.rec-item:hover{background:#fafaf8}
.rec-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.rec-code{font-size:12.5px;font-weight:700;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.6px}
.rec-title{font-size:14.5px;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rec-side{display:flex;align-items:center;gap:12px;flex:none}
.rec-time{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap}
.rdel{flex:none;width:26px;height:26px;border:none;background:transparent;border-radius:7px;color:var(--ink-3);font-size:17px;line-height:1;cursor:pointer;transition:.15s}
.rdel:hover{background:#f3f3f1;color:var(--danger)}
.rec-miss .rec-title{color:var(--ink-3);font-weight:400;font-size:13.5px}
.rec-note{font-size:12px;color:var(--ink-3);text-align:center;margin-top:14px;line-height:1.6}
.rec-empty{text-align:center;padding:66px 20px}
.rec-empty p{font-size:15.5px;font-weight:650}
.rec-empty small{display:block;color:var(--ink-3);margin:7px 0 24px}

/* ------------------------------------------------ 工单详情(两端共用) */
.ticket-head{padding:26px 28px}
.th-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.th-code{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.5px;font-weight:600}
.ticket-head h2{font-size:21px;margin-top:9px;letter-spacing:-.3px;line-height:1.45;word-break:break-word}
.th-meta{font-size:12.5px;color:var(--ink-3);margin-top:7px}

.badge{display:inline-flex;align-items:center;gap:6px;padding:4.5px 12px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap}
.badge i{width:6px;height:6px;border-radius:50%;flex:none}
.st-pending{background:var(--ink);color:#fff}.st-pending i{background:#fff}
.st-processing{background:#fff;border:1px solid var(--ink);color:var(--ink)}.st-processing i{background:var(--ink)}
.st-resolved{background:#efefec;color:#777570}.st-resolved i{background:#a3a19c}

.stepper{display:flex;align-items:center;justify-content:center;padding:26px 28px 6px}
.snode{display:flex;flex-direction:column;align-items:center;gap:7px;min-width:74px}
.snode i{width:12px;height:12px;border-radius:50%;border:2px solid var(--line-2);background:#fff;transition:.3s}
.snode.done i{background:var(--ink);border-color:var(--ink)}
.snode span{font-size:12px;color:var(--ink-3)}
.snode.done span{color:var(--ink);font-weight:600}
.sline{width:56px;height:2px;background:var(--line-2);margin:0 6px 22px;transition:.3s}
.sline.done{background:var(--ink)}

/* 对话时间线 */
.chat{display:flex;flex-direction:column;gap:22px;padding:28px}
.msg{display:flex;gap:12px;max-width:82%}
.msg.right{flex-direction:row-reverse;align-self:flex-end}
.msg.left{align-self:flex-start}
.avatar{width:34px;height:34px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700}
.msg.admin .avatar{background:var(--ink);color:#fff}
.msg.user .avatar{background:#fff;color:var(--ink);border:1.5px solid var(--line-2)}
.msg.ai .avatar{background:#fff;color:var(--ink);border:1.5px solid var(--ink);font-size:10.5px;font-weight:800;letter-spacing:.3px}
.msg-main{display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.msg.right .msg-main{align-items:flex-end}
.bubble{padding:13px 17px;font-size:14px;line-height:1.75;white-space:pre-wrap;word-break:break-word;max-width:100%}
.bubble.r-l{border-radius:2px 13px 13px 13px}
.bubble.r-r{border-radius:13px 2px 13px 13px}
.msg.admin .bubble{background:var(--ink);color:#fff}
.msg.user .bubble{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.msg.ai .bubble{background:#fff;border:1px solid var(--line-2);border-left:3px solid var(--ink)}
.msg-meta{font-size:11.5px;color:var(--ink-3);margin-top:6px}
.msg-atts{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.att{display:inline-flex;align-items:center;gap:7px;padding:7.5px 13px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:12.5px;color:var(--ink);text-decoration:none;transition:.18s;max-width:100%}
.att span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.att em{font-style:normal;color:var(--ink-3);font-size:11.5px;flex:none}
.att:hover{border-color:var(--ink);background:#fafaf9}
.msg.admin .att{border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.08);color:#fff}
.msg.admin .att em{color:rgba(255,255,255,.55)}
.msg.admin .att:hover{border-color:rgba(255,255,255,.65);background:rgba(255,255,255,.14)}

/* 追问 / 回复区 */
.reply-card{border-top:1px dashed var(--line-2);padding:24px 28px 28px}
.reply-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}
.reply-row .spacer{flex:1}
.reply-row .btn{padding:11px 22px}
.select-sm{width:auto;min-width:186px;flex:none;padding:10px 36px 10px 13px;font-size:13.5px}

.notfound{text-align:center;padding:80px 0}
.notfound h2{font-size:22px;letter-spacing:-.3px}
.notfound p{color:var(--ink-3);margin:10px 0 26px;font-size:14px}

/* ------------------------------------------------ 管理端:登录 */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:#141414;background-image:radial-gradient(1000px 520px at 50% -10%,#2d2d2d 0%,#141414 62%)}
.login-card{width:100%;max-width:390px;background:#fff;border-radius:20px;padding:42px 38px;box-shadow:0 34px 90px -18px rgba(0,0,0,.55);animation:fadeUp .45s ease}
.login-mark{width:46px;height:46px;background:var(--ink);color:#fff;border-radius:13px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:21px;margin:0 auto 20px}
.login-card h1{font-size:20px;text-align:center;letter-spacing:-.2px}
.login-sub{text-align:center;color:var(--ink-3);font-size:11.5px;letter-spacing:2px;margin:5px 0 30px;text-transform:uppercase}
.login-card .input{margin-bottom:14px;text-align:center;letter-spacing:1px}
.login-err{color:var(--danger);font-size:13px;text-align:center;margin-top:14px}

/* ------------------------------------------------ 管理端:主布局 */
.admin-layout{display:flex;min-height:100vh;background:var(--bg)}
.sidebar{width:242px;flex:none;background:#fff;border-right:1px solid var(--line);padding:24px 14px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.sidebar .brand{padding:0 8px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:28px;flex:1}
.nav-item{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-radius:10px;font-size:14px;color:var(--ink-2);cursor:pointer;transition:.15s;border:none;background:none;width:100%;text-align:left}
.nav-item:hover{background:#f4f4f2;color:var(--ink)}
.nav-item.active{background:var(--ink);color:#fff;font-weight:600}
.badge-n{font-style:normal;font-size:11.5px;min-width:24px;text-align:center;padding:1.5px 8px;border-radius:99px;background:#f0f0ee;color:var(--ink-2);font-variant-numeric:tabular-nums}
.nav-item.active .badge-n{background:rgba(255,255,255,.18);color:#fff}
.side-foot{border-top:1px solid var(--line);padding-top:15px;display:flex;align-items:center;justify-content:space-between}
.side-user{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:550}
.side-avatar{width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700}
.link-btn{border:none;background:none;color:var(--ink-3);font-size:12.5px;cursor:pointer;transition:.15s;padding:6px 9px;border-radius:8px}
.link-btn:hover{color:var(--ink);background:#f2f2f0}
.admin-main{flex:1;padding:28px 32px;max-width:1200px;width:100%}

/* 统计卡 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:var(--shadow-sm)}
.stat .num{font-size:30px;font-weight:800;letter-spacing:-1px;line-height:1.15;font-variant-numeric:tabular-nums}
.stat .lbl{color:var(--ink-3);font-size:12.5px;margin-top:3px}

/* 列表 */
.table-head{display:flex;align-items:center;justify-content:space-between;padding:19px 22px;gap:14px;flex-wrap:wrap}
.table-head h3{font-size:16px;letter-spacing:-.2px}
.table-tools{display:flex;gap:10px;align-items:center}
.input-sm{padding:9px 14px;font-size:13.5px;width:220px}
.table{width:100%;border-collapse:collapse}
.table th{font-size:11.5px;color:var(--ink-3);font-weight:600;text-align:left;padding:11px 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fcfcfb;white-space:nowrap}
.table td{padding:15px 22px;font-size:13.5px;border-bottom:1px solid #f1f1ef;vertical-align:middle}
.row{cursor:pointer}
.row:hover td{background:#fafaf8}
.td-code{font-weight:650;font-variant-numeric:tabular-nums;font-size:13px;white-space:nowrap}
.td-title{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.td-sub{color:var(--ink-3);font-size:12px}
.td-time{color:var(--ink-3);font-size:12.5px;white-space:nowrap;font-variant-numeric:tabular-nums}
.empty{padding:76px 0;text-align:center;color:var(--ink-3)}
.empty p{font-size:15px;color:var(--ink-2);font-weight:550}
.empty small{font-size:12.5px}

/* 管理端详情 */
.back{margin-bottom:14px;font-size:13.5px}
.detail-card{padding:28px}
.detail-head{display:flex;justify-content:space-between;gap:18px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:26px;flex-wrap:wrap}
.detail-code{font-size:12.5px;color:var(--ink-3);display:flex;gap:10px;align-items:center;font-variant-numeric:tabular-nums;font-weight:600}
.detail-head h2{font-size:20px;margin-top:8px;letter-spacing:-.3px;line-height:1.45;word-break:break-word}
.detail-meta{font-size:12.5px;color:var(--ink-3);margin-top:7px}
.detail-ops{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* ------------------------------------------------ 页脚 / 其他 */
.site-footer{border-top:1px solid var(--line);padding:26px 0;margin-top:30px}
.site-footer .wrap{display:flex;justify-content:space-between;color:var(--ink-3);font-size:12.5px;gap:10px;flex-wrap:wrap}
.site-footer a:hover{color:var(--ink)}
#toast{position:fixed;top:26px;left:50%;transform:translateX(-50%) translateY(-14px);background:var(--ink);color:#fff;padding:12px 24px;border-radius:99px;font-size:13.5px;box-shadow:0 12px 34px rgba(0,0,0,.28);opacity:0;pointer-events:none;transition:.28s cubic-bezier(.2,.7,.3,1);z-index:1000;max-width:86vw;text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.skeleton{padding:60px;text-align:center;color:var(--ink-3);font-size:14px}
.view{animation:fadeUp .35s ease}

/* ------------------------------------------------ 响应式 */
@media(max-width:900px){
  .admin-layout{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;align-items:center;padding:14px 18px;gap:14px}
  .side-nav{flex-direction:row;margin-top:0;flex:1;overflow-x:auto;gap:6px}
  .nav-item{white-space:nowrap;padding:8px 13px}
  .side-foot{border:none;padding:0}
  .side-user span{display:none}
  .admin-main{padding:18px 16px}
  .stats{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat{padding:16px 18px}
  .stat .num{font-size:24px}
}
@media(max-width:640px){
  .hero{padding:40px 0 28px}
  .hero h1{font-size:27px}
  .header-inner{height:56px}
  .brand-text{display:none}
  .header-nav a{padding:8px 11px;font-size:13px}
  .nav-badge{margin-left:4px}
  .form-card,.ticket-head,.chat,.reply-card,.detail-card,.track-card{padding-left:18px;padding-right:18px}
  .form-card{padding-top:24px;padding-bottom:26px}
  .steps{display:none}
  .track-row{flex-direction:column}
  .msg{max-width:100%}
  .code-row span{font-size:25px}
  .table th:nth-child(4),.table td:nth-child(4){display:none}
  .td-title{max-width:150px}
  .input-sm{width:140px}
  .success-actions .btn{flex:1}
}