*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#eef2f7;color:#1f2937}
a{text-decoration:none;color:#2563eb}

.admin-login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:16px;background:linear-gradient(135deg,#eff4ff,#f7f2ec)}
.login-card,.install-card{width:min(100%,560px);background:#fff;border-radius:20px;padding:28px;box-shadow:0 20px 50px rgba(41,56,85,.12)}
.login-card h1,.install-card h1{margin-top:0}
.login-card form,.install-form{display:grid;gap:14px}
.login-card input,.install-form input,.install-form select,.admin-form input,.admin-form select,.admin-form textarea,.status-form select{width:100%;padding:10px 12px;border:1px solid #d8e0eb;border-radius:12px;background:#fff}
.login-card button,.install-form button,.admin-form button,.status-form button,.chat-block-form button{padding:10px 14px;border:none;border-radius:12px;background:#2563eb;color:#fff;cursor:pointer}

.flash{padding:12px 14px;border-radius:14px;margin:12px 0}
.flash.error{background:#fdecec;color:#a12626}
.flash.success{background:#e9f8ef;color:#1c6b3b}

.admin-sidebar{position:fixed;left:0;top:0;bottom:0;width:244px;padding:18px 14px;background:linear-gradient(180deg,#111827,#182234);color:#fff;box-shadow:18px 0 40px rgba(15,23,42,.18);z-index:1200;display:flex;flex-direction:column}
.admin-sidebar-brand{display:flex;align-items:center;gap:12px;padding:10px 10px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.admin-sidebar-badge{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#2563eb,#38bdf8);font-size:13px;font-weight:700;color:#fff}
.admin-sidebar-brand strong{display:block;font-size:16px;line-height:1.2}
.admin-sidebar-brand span{display:block;margin-top:4px;font-size:12px;color:#94a3b8}
.admin-sidebar-nav{display:grid;gap:8px;padding:18px 4px;overflow:auto}
.admin-sidebar-nav a{display:flex;align-items:center;min-height:42px;padding:10px 14px;border-radius:14px;color:#dbe4f0;background:transparent;transition:.2s ease}
.admin-sidebar-nav a:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(2px)}
.admin-sidebar-nav a.active{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.28)}
.admin-sidebar-footer{margin-top:auto;padding:12px 4px 4px}
.admin-sidebar-footer a{display:flex;align-items:center;justify-content:center;padding:11px 12px;border-radius:12px;background:rgba(255,255,255,.08);color:#fff}

.admin-topbar{position:sticky;top:0;z-index:900;margin-left:244px;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:16px 22px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid #dbe3ee}
.admin-topbar-left,.admin-topbar-right{display:flex;align-items:center;gap:12px}
.admin-topbar-title strong{display:block;font-size:18px;color:#111827}
.admin-topbar-title span{display:block;margin-top:3px;font-size:12px;color:#6b7280}
.admin-menu-toggle{display:none;padding:9px 12px;border:1px solid #d5deea;border-radius:12px;background:#fff;color:#111827;cursor:pointer}

.admin-refresh-tools{display:flex;align-items:center;gap:8px;color:#64748b;font-size:12px}
.admin-refresh-tools button{padding:7px 10px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:#1f2937;cursor:pointer}

.admin-wrap{margin-left:244px;max-width:none;padding:22px 22px 42px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}
.stat-card,.admin-panel{background:#fff;border:1px solid #e5ebf3;border-radius:18px;box-shadow:0 18px 42px rgba(34,46,66,.06)}
.stat-card{padding:18px}
.stat-card strong{display:block;font-size:28px;margin-bottom:4px}
.admin-panel{padding:16px}
.admin-panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.admin-panel-head h2{margin:0;font-size:20px}

.admin-table{width:100%;border-collapse:collapse;min-width:920px}
.admin-table th,.admin-table td{padding:10px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:top}
.admin-table-wrap{width:100%;overflow-x:auto}
.table-subtext{display:block;margin-top:4px;color:#667085;font-size:12px;line-height:1.4}
.dashboard-turnover{font-size:24px;color:#2563eb}
.balance-box{display:flex;flex-direction:column;gap:4px;align-items:flex-end;text-align:right}
.balance-box .frozen-amount{font-size:13px;color:#b45309;background:#fef3c7;border:1px solid #fde68a;border-radius:999px;padding:3px 10px;display:inline-block}

.delivery-cell{min-width:180px}
.delivery-cell code{display:block;max-width:240px;margin-bottom:6px;padding:8px 10px;border-radius:8px;background:#f5f7fb;white-space:pre-wrap;word-break:break-all}
.order-actions{min-width:220px}
.ship-form{display:grid;gap:8px;margin-top:10px}
.ship-form textarea{min-height:74px;padding:10px;border:1px solid #d8e0eb;border-radius:10px;resize:vertical}
.ship-form button{padding:9px 12px;border:0;border-radius:10px;background:#16834a;color:#fff;cursor:pointer}

.admin-form{display:grid;gap:12px}
.inline-form{grid-template-columns:2fr 1fr auto}
.grid-form{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-form textarea{grid-column:1 / -1;min-height:90px}
.status-form{display:flex;gap:8px;align-items:center}
.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.preview-box{display:grid;gap:8px}
.preview-box img{max-width:240px;border-radius:16px;border:1px solid #d8e0eb;padding:8px;background:#fff}

.chat-admin-layout{display:grid;grid-template-columns:minmax(0,1fr) 1px 220px;gap:18px;align-items:stretch}
.chat-admin-layout-left{grid-template-columns:220px 1px minmax(0,1fr)}
.chat-layout-divider{width:1px;background:linear-gradient(180deg,transparent,#d8e0eb 12%,#d8e0eb 88%,transparent);border-radius:999px}
.chat-session-list{padding:0;overflow:hidden;display:grid;grid-template-rows:auto 1fr;min-height:700px}
.chat-session-scroll{display:flex;flex-direction:column;align-items:stretch;gap:8px;max-height:700px;overflow-y:auto;overflow-x:hidden;padding:12px;background:linear-gradient(180deg,#fff,#f9fbff)}
.chat-session-item{display:flex;flex-direction:column;align-items:flex-start;gap:3px;width:100%;padding:10px 12px;border:1px solid #e5ebf3;border-radius:12px;background:#fff;color:#1f2a37;transition:.2s ease}
.chat-session-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;width:100%}
.chat-session-item:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,95,191,.08)}
.chat-session-item.active{border-color:#2563eb;box-shadow:0 10px 24px rgba(37,99,235,.12);background:#f8fbff}
.chat-session-item strong{font-size:13px;line-height:1.35}
.chat-session-item span{color:#667085;font-size:12px;line-height:1.4;word-break:break-all}
.chat-unread{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:#e11d48;color:#fff;font-style:normal;font-size:11px;line-height:1}
.chat-thread-panel{display:grid;grid-template-rows:auto 1fr auto;min-height:700px}
.chat-current-contact{margin-top:6px;color:#667085;font-size:13px}
.chat-admin-messages{height:520px;max-height:520px;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:12px;padding:10px;scroll-behavior:smooth;border:1px solid #e5ebf3;border-radius:16px;background:linear-gradient(180deg,#fcfdff,#f7faff)}
.chat-admin-messages .chat-item{max-width:78%;padding:10px 12px;border-radius:14px;background:#f5f7fb;border:1px solid #e5ebf3}
.chat-admin-messages .chat-item.client{align-self:flex-start;margin-right:auto;border-bottom-left-radius:6px;background:#f5f7fb;color:#1f2a37;border-color:#e5ebf3}
.chat-admin-messages .chat-item.admin{align-self:flex-end;margin-left:auto;background:#2563eb;color:#fff;border-color:#2563eb;border-bottom-right-radius:6px}
.chat-admin-messages .chat-item.robot{align-self:flex-start;margin-right:auto;background:#eef2f7;color:#334155;border-color:#d8e0eb;border-bottom-left-radius:6px}
.chat-admin-messages .chat-item img,.chat-admin-messages .chat-item video{max-width:100%;border-radius:10px;display:block}
.chat-meta{font-size:12px;opacity:.8;margin-top:8px}
.chat-admin-form{display:grid;gap:10px;margin-top:18px}
.chat-admin-form textarea{min-height:90px;padding:10px 12px;border:1px solid #d8e0eb;border-radius:12px;resize:vertical}
.chat-admin-form input[type="file"]{padding:10px 0}
.chat-block-form{display:flex;align-items:center}

.empty-state{padding:18px;border:1px dashed #cfd8e3;border-radius:16px;background:#fbfdff;color:#667085}

@media (max-width:900px){
body.admin-sidebar-open{overflow:hidden}
.admin-sidebar{transform:translateX(-100%);transition:transform .22s ease}
body.admin-sidebar-open .admin-sidebar{transform:translateX(0)}
.admin-topbar{margin-left:0;padding:12px 14px}
.admin-wrap{margin-left:0;padding:14px 10px 28px}
.admin-menu-toggle{display:inline-flex;align-items:center;justify-content:center}
.stats-grid,.inline-form,.grid-form,.two-cols,.chat-admin-layout{grid-template-columns:1fr}
.chat-admin-layout-left{grid-template-columns:1fr}
.admin-table{display:block;overflow:auto}
.chat-layout-divider{display:none}
.chat-thread-panel{min-height:auto}
.chat-session-list{min-height:auto}
.chat-admin-messages{height:auto;max-height:none}
.chat-session-scroll{max-height:none}
.stat-card,.admin-panel{border-radius:14px}
.stat-card{padding:14px}
.admin-panel{padding:12px}
.admin-panel-head{margin-bottom:12px}
.admin-panel-head h2{font-size:17px}
.login-card,.install-card{padding:20px;border-radius:16px}
.login-card h1,.install-card h1{font-size:22px}
.login-card input,.install-form input,.install-form select,.admin-form input,.admin-form select,.admin-form textarea,.status-form select{padding:9px 10px;border-radius:10px;font-size:14px}
.login-card button,.install-form button,.admin-form button,.status-form button,.chat-block-form button{padding:9px 12px;border-radius:10px;font-size:14px}
.admin-table th,.admin-table td{padding:8px;font-size:13px}
.table-subtext{font-size:11px}
.dashboard-turnover{font-size:20px}
.chat-session-item{padding:8px 10px;border-radius:10px}
.chat-session-item strong{font-size:12px}
.chat-session-item span,.chat-current-contact{font-size:11px}
.chat-admin-messages{padding:8px;border-radius:12px}
.chat-admin-messages .chat-item{max-width:88%;padding:8px 10px;border-radius:12px;font-size:13px}
.chat-meta{font-size:11px;margin-top:6px}
.chat-admin-form{gap:8px;margin-top:12px}
.chat-admin-form textarea{min-height:74px;padding:9px 10px}
}

@media (max-width:520px){
.admin-topbar{padding:10px 10px}
.admin-topbar-title strong{font-size:16px}
.admin-topbar-title span{font-size:11px}
.admin-refresh-tools{font-size:11px}
.admin-wrap{padding:10px 8px 24px}
.stats-grid{gap:10px}
.stat-card strong{font-size:22px}
.admin-panel-head h2{font-size:16px}
.preview-box img{max-width:150px;padding:6px;border-radius:10px}
}

/* ============ 后台整体美化增强（新增） ============ */
:root{
  --admin-brand:#2563eb;
  --admin-brand-dark:#1d4ed8;
  --admin-brand-soft:#e7eeff;
  --admin-ink:#1f2937;
  --admin-muted:#6b7280;
  --admin-line:#e5ebf3;
  --admin-bg:#eef2f7;
  --admin-success:#16834a;
  --admin-warning:#c7882e;
  --admin-danger:#dc2626;
  --radius-lg:18px;
  --radius-md:12px;
  --ralign-dash:0 14px 30px rgba(15,23,42,.06);
}
body{transition:background .3s ease}

/* 按钮统一渐变与悬停 */
.login-card button,.install-form button,.admin-form button,.status-form button,.chat-block-form button{
  background:linear-gradient(135deg,var(--admin-brand),#3b82f6);
  box-shadow:0 8px 16px rgba(37,99,235,.20);
  transition:transform .16s ease,box-shadow .2s ease;
  font-weight:600;
}
.login-card button:hover,.install-form button:hover,.admin-form button:hover,.status-form button:hover,.chat-block-form button:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 22px rgba(37,99,235,.28);
}

/* 输入框聚焦反馈 */
.login-card input,.install-form input,.install-form select,.admin-form input,.admin-form select,.admin-form textarea,.status-form select,.ship-form textarea,.chat-admin-form textarea{
  transition:border-color .2s ease,box-shadow .2s ease;
}
.login-card input:focus,.install-form input:focus,.install-form select:focus,.admin-form input:focus,.admin-form select:focus,.admin-form textarea:focus,.status-form select:focus,.ship-form textarea:focus,.chat-admin-form textarea:focus{
  outline:none;border-color:var(--admin-brand);box-shadow:0 0 0 3px rgba(37,99,235,.12);
}

/* 侧边栏强化 */
.admin-sidebar-brand{position:relative}
.admin-sidebar-brand::after{content:'';position:absolute;right:14px;bottom:-1px;left:14px;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent)}
.admin-sidebar-nav a{position:relative}
.admin-sidebar-nav a::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:0 4px 4px 0;background:var(--admin-brand);opacity:0;transition:opacity .2s ease}
.admin-sidebar-nav a:hover::before,.admin-sidebar-nav a.active::before{opacity:1}

/* 顶栏毛玻璃强化 */
.admin-topbar{box-shadow:0 6px 20px rgba(15,23,42,.05)}

/* 卡片阴影统一 */
.stat-card,.admin-panel{transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.stat-card:hover,.admin-panel:hover{box-shadow:0 20px 46px rgba(34,46,66,.10)}
.stat-card{border-radius:var(--radius-lg)}

/* 统计卡数字渐变 */
.stat-card strong{font-size:30px;background:linear-gradient(135deg,#2563eb,#38bdf8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.stat-card{position:relative;overflow:hidden}
.stat-card::after{content:'';position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.10),transparent 70%)}

/* 表格斑马纹与悬停 */
.admin-table tbody tr{transition:background .15s ease}
.admin-table tbody tr:nth-child(even){background:#f8fafc}
.admin-table tbody tr:hover{background:#f0f6ff}
.admin-table th{background:#f7f9fc;color:#4b5563;font-size:13px;font-weight:700}
.admin-table th,.admin-table td{padding:12px}

/* 订单状态徽章（后台） */
.admin-badge,.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}
.admin-badge::before,.badge::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}
.st-pending{background:#fdf3dd;color:#a8661b}
.st-review{background:#e7eefb;color:#2a6db0}
.st-paid{background:#e5f6ec;color:#1f7a48}
.st-completed{background:#e4f3fb;color:#1488a5}
.st-cancelled{background:#fbe9e4;color:#b54430}
.st-closed{background:#ecedef;color:#6b7280}
.st-approved{background:#e7eefb;color:#2a6db0}
.st-rejected{background:#fbe9e4;color:#b54430}

/* 支付方式标签（后台） */
.pm-label{display:inline-flex;align-items:center;padding:3px 10px;border-radius:8px;font-size:12px;font-weight:600}
.pm-wechat{background:#e5f6e8;color:#1f9d4d}
.pm-alipay{background:#e4eefe;color:#2563eb}
.pm-qqpay{background:#e4f0fb;color:#1e75c2}
.pm-manualqr{background:#f3ede8;color:#8d6e4a}
.pm-other{background:#f1f2f4;color:#6b7280}

/* 通用启停/卡密状态（后台） */
.st-on{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:#e5f6ec;color:#1f7a48}
.st-on::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}
.st-off{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:#ecedef;color:#6b7280}
.st-off::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}
.st-card-used{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:#e4f3fb;color:#1488a5}
.st-card-used::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}
.st-card-banned{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;background:#fbe9e4;color:#b54430}
.st-card-banned::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}

/* 发货内容代码块 */
.delivery-cell code{border:1px solid #edf2f7}

/* 操作区表单间距 */
.order-actions{display:grid;gap:8px}

/* 仪表盘今日流水强化 */
.dashboard-turnover{font-size:28px;font-weight:800;background:linear-gradient(135deg,#2563eb,#38bdf8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* 登录卡片 logo 区与品牌感 */
.login-card{text-align:center;padding:36px 32px}
.login-card h1{font-size:26px;margin-bottom:6px}
.login-card p{color:var(--admin-muted);margin:0 0 8px}
.login-card form{text-align:left;margin-top:8px}

/* 登录页「去注册」按钮（红色） */
.login-register{
    display:block;margin-top:14px;padding:11px 14px;border-radius:12px;text-align:center;
    border:1px solid #f3b0b0;background:#fff5f5;color:#d83a3a;
    font-weight:600;font-size:14px;letter-spacing:.05rem;
    transition:background-color .2s ease,border-color .2s ease,transform .16s ease;
}
.login-register:hover{background:#fdecec;border-color:#e98a8a;color:#c62f2f;transform:translateY(-1px)}

/* ============ 后台"返回前台"按钮增强 ============ */
.admin-sidebar-front{margin-top:2px;border-top:1px solid rgba(255,255,255,.08)}
.admin-sidebar-front a{
  min-height:44px;
  background:linear-gradient(135deg,#16a34a,#22c55e);
  color:#fff;
  box-shadow:0 8px 18px rgba(22,163,74,.28);
  font-weight:600;
}
.admin-sidebar-front a:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 24px rgba(22,163,74,.38);
  background:linear-gradient(135deg,#15803d,#16a34a);
  color:#fff;
}
.admin-sidebar-front a::before{display:none}