/* ============ 管理后台 · Material 3 ============ */
:root {
  color-scheme: dark;
  --primary:#d0bcff; --on-primary:#381e72; --primary-container:#4f378b; --on-primary-container:#eaddff;
  --secondary-container:#4a4458; --on-secondary-container:#e8def8;
  --surface:#141218; --surface-1:#1d1b20; --surface-2:#211f26; --surface-3:#2b2930; --surface-var:#49454f;
  --on-surface:#e6e0e9; --on-surface-var:#cac4d0; --outline:#938f99; --outline-var:#49454f;
  --error:#f2b8b5; --on-error:#601410; --error-container:#8c1d18;
  --ok:#8bd9a0; --warn:#f5c26b;
  --nav-w:280px; --ease:cubic-bezier(.2,0,0,1);
}
@media (prefers-color-scheme: light) {
  :root { color-scheme: light;
    --primary:#6750a4; --on-primary:#fff; --primary-container:#eaddff; --on-primary-container:#21005d;
    --secondary-container:#e8def8; --on-secondary-container:#1d192b;
    --surface:#fef7ff; --surface-1:#f7f2fa; --surface-2:#f3edf7; --surface-3:#ece6f0; --surface-var:#e7e0ec;
    --on-surface:#1d1b20; --on-surface-var:#49454f; --outline:#79747e; --outline-var:#cac4d0;
    --error:#b3261e; --on-error:#fff; --error-container:#f9dedc; --ok:#1b7a3d; --warn:#9a6700; }
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{background:var(--surface);color:var(--on-surface);font:400 14px/1.5 "Roboto","Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif}
svg{width:24px;height:24px;fill:currentColor;flex-shrink:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
code{background:var(--surface-3);padding:1px 6px;border-radius:6px;font-size:.85em}
[hidden]{display:none!important}
.muted{color:var(--on-surface-var)} .small{font-size:12.5px} .right{text-align:right}

/* 按钮 */
.btn{height:40px;padding:0 24px;border-radius:20px;font-weight:500;letter-spacing:.1px;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:box-shadow .2s,background .2s,transform .1s}
.btn:active{transform:scale(.97)}
.btn.filled{background:var(--primary);color:var(--on-primary)}
.btn.filled:hover{box-shadow:0 1px 3px 1px rgba(0,0,0,.25)}
.btn.filled.danger{background:var(--error);color:var(--on-error)}
.btn.text{padding:0 12px;color:var(--primary)} .btn.text:hover{background:color-mix(in srgb,var(--primary) 10%,transparent)}
.btn.danger-text{color:var(--error)}
.btn[disabled]{opacity:.5;pointer-events:none}
.icon-btn{width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--on-surface-var)}
.icon-btn:hover{background:color-mix(in srgb,var(--on-surface) 8%,transparent)}
.avatar-btn{width:36px;height:36px;border-radius:50%;background:var(--primary-container);color:var(--on-primary-container);font-weight:600}

/* 输入框（Filled） */
.field{position:relative;display:block;margin-bottom:14px}
.field input{width:100%;height:56px;padding:22px 16px 6px;background:var(--surface-3);color:var(--on-surface);border:0;border-bottom:2px solid var(--on-surface-var);border-radius:4px 4px 0 0;font:inherit;font-size:16px;outline:none;transition:border-color .2s}
.field input:focus{border-bottom-color:var(--primary)}
.field span{position:absolute;left:16px;top:17px;color:var(--on-surface-var);pointer-events:none;transition:all .15s var(--ease);font-size:16px}
.field input:focus+span,.field input:not(:placeholder-shown)+span,.field span.always-up{top:7px;font-size:12px}
.field input:focus+span{color:var(--primary)}
.form-error{color:var(--error);font-size:13px;margin:-4px 0 12px}

/* 登录 */
.login-screen{min-height:100%;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(circle at 20% 10%,color-mix(in srgb,var(--primary) 18%,transparent),transparent 55%),var(--surface)}
.login-card{width:100%;max-width:400px;background:var(--surface-2);border-radius:28px;padding:36px 28px 28px;box-shadow:0 2px 6px rgba(0,0,0,.2)}
.login-logo{width:56px;height:56px;border-radius:18px;background:var(--primary-container);color:var(--on-primary-container);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.login-card h1{font-size:28px;font-weight:500;margin-bottom:4px} .login-card .muted{margin-bottom:24px}
.login-card .btn{width:100%;margin-top:6px}

/* 应用壳：默认=手机（顶栏+底栏） */
.app{min-height:100vh;display:flex;flex-direction:column}
.top-bar{position:sticky;top:0;z-index:20;height:64px;padding:env(safe-area-inset-top) 12px 0 20px;display:flex;align-items:center;justify-content:space-between;background:var(--surface-2)}
.top-bar h1{font-size:22px;font-weight:400}
.top-actions{display:flex;align-items:center;gap:4px}
.nav{position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(80px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:flex;background:var(--surface-2);box-shadow:0 -1px 0 var(--outline-var)}
.nav-brand,.nav-spacer,.nav-link-out,.fab-extended{display:none}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--on-surface-var);font-size:12px;font-weight:500}
.nav-item .pill{width:64px;height:32px;border-radius:16px;display:flex;align-items:center;justify-content:center;transition:background .25s var(--ease)}
.nav-item.active{color:var(--on-surface)}
.nav-item.active .pill{background:var(--secondary-container);color:var(--on-secondary-container)}
.content{flex:1;padding:16px 16px calc(110px + env(safe-area-inset-bottom))}
.page{display:none;max-width:1200px;margin:0 auto} .page.active{display:block;animation:in .3s var(--ease)}
@keyframes in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fab{position:fixed;right:16px;bottom:calc(96px + env(safe-area-inset-bottom));z-index:25;width:56px;height:56px;border-radius:16px;background:var(--primary-container);color:var(--on-primary-container);display:flex;align-items:center;justify-content:center;box-shadow:0 3px 8px rgba(0,0,0,.35)}
.fab:active{transform:scale(.94)}

/* 卡片 / 统计 */
.card{background:var(--surface-1);border-radius:16px;padding:18px 20px;margin-bottom:16px;border:1px solid var(--outline-var)}
.card-title{font-size:16px;font-weight:500;margin-bottom:12px}
.grid-2{display:grid;grid-template-columns:1fr;gap:0 16px}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:16px}
.stat{border-radius:20px;padding:16px 18px;background:var(--surface-2)}
.stat .n{font-size:32px;font-weight:400;line-height:1.1} .stat .l{color:var(--on-surface-var);font-size:13px;margin-top:4px}
.stat.s1{background:var(--primary-container);color:var(--on-primary-container)} .stat.s1 .l{color:inherit;opacity:.8}
.kv{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--outline-var)} .kv:last-child{border:0}
.kv span:first-child{color:var(--on-surface-var)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:8px;font-size:12px;font-weight:500;background:var(--surface-3)}
.tag.ok{color:var(--ok)} .tag.off{color:var(--error)} .tag.warn{color:var(--warn)} .tag.admin{background:var(--primary-container);color:var(--on-primary-container)}
.log-list{list-style:none} .log-list li{display:flex;flex-direction:column;padding:9px 0;border-bottom:1px solid var(--outline-var);font-size:13px} .log-list li:last-child{border:0}
.log-list .t{color:var(--on-surface-var);font-size:12px}

/* 工具栏 / Chip / 搜索 */
.toolbar{display:flex;flex-direction:column;gap:12px;margin-bottom:14px}
.search{display:flex;align-items:center;gap:10px;height:48px;padding:0 16px;border-radius:24px;background:var(--surface-3);color:var(--on-surface-var)}
.search input{flex:1;background:none;border:0;outline:0;color:var(--on-surface);font:inherit;font-size:15px}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
.chip{height:32px;padding:0 14px;border-radius:8px;border:1px solid var(--outline);white-space:nowrap;font-size:13px;font-weight:500;color:var(--on-surface-var)}
.chip.selected{background:var(--secondary-container);color:var(--on-secondary-container);border-color:transparent}

/* 用户：手机=卡片，PC=表格 */
.table-card{display:none;padding:0;overflow:hidden}
.table{width:100%;border-collapse:collapse}
.table th{text-align:left;padding:14px 16px;font-weight:500;color:var(--on-surface-var);font-size:13px;border-bottom:1px solid var(--outline-var);background:var(--surface-2)}
.table th.right,.table td.right{text-align:right}
.table td{padding:12px 16px;border-bottom:1px solid var(--outline-var);vertical-align:middle}
.table tr:last-child td{border:0}
.table tbody tr:hover{background:color-mix(in srgb,var(--on-surface) 5%,transparent)}
.u-cell{display:flex;align-items:center;gap:12px;min-width:0}
.u-av{width:40px;height:40px;border-radius:50%;background:var(--primary-container);color:var(--on-primary-container);display:flex;align-items:center;justify-content:center;font-weight:600;flex-shrink:0}
.u-name{font-weight:500} .u-sub{font-size:12px;color:var(--on-surface-var)}
.row-actions{display:inline-flex;gap:2px}
.user-cards{display:flex;flex-direction:column;gap:12px}
.ucard{background:var(--surface-1);border:1px solid var(--outline-var);border-radius:16px;padding:14px 16px}
.ucard .top{display:flex;align-items:center;gap:12px}
.ucard .meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 4px}
.ucard .info{font-size:12.5px;color:var(--on-surface-var);display:flex;flex-direction:column;gap:2px}
.ucard .acts{display:flex;justify-content:flex-end;gap:2px;margin-top:6px}
.empty{text-align:center;color:var(--on-surface-var);padding:48px 0}

/* 对话框：手机=全屏，PC=居中卡片 */
.dialog{border:0;padding:0;background:var(--surface-2);color:var(--on-surface);border-radius:28px;width:min(560px,calc(100vw - 32px));max-height:92vh;margin:auto;box-shadow:0 8px 32px rgba(0,0,0,.45)}
.dialog.small{width:min(400px,calc(100vw - 32px))}
.dialog::backdrop{background:rgba(0,0,0,.5);backdrop-filter:blur(2px)}
.dialog form{padding:24px;display:block}
.dialog h2{font-size:24px;font-weight:400;margin-bottom:16px}
.dialog p{margin-bottom:14px}
.dialog-actions{display:flex;justify-content:flex-end;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap}
.dialog-actions .danger-text{margin-right:auto}
.seg{display:flex;border:1px solid var(--outline);border-radius:20px;overflow:hidden;margin-bottom:14px}
.seg button{flex:1;height:40px;font-weight:500;color:var(--on-surface-var)} .seg button+button{border-left:1px solid var(--outline)}
.seg button.selected{background:var(--secondary-container);color:var(--on-secondary-container)}
.cred{background:var(--surface-3);border-radius:16px;padding:14px 16px;margin-bottom:14px;display:flex;flex-direction:column;gap:10px}
.cred div{display:flex;justify-content:space-between;gap:10px;align-items:center} .cred span{color:var(--on-surface-var)}
.cred b{font-family:ui-monospace,Consolas,monospace;font-size:16px;user-select:all;word-break:break-all}

.snackbar{position:fixed;left:50%;bottom:calc(100px + env(safe-area-inset-bottom));transform:translate(-50%,20px);background:var(--on-surface);color:var(--surface);padding:12px 20px;border-radius:8px;font-size:14px;opacity:0;pointer-events:none;transition:all .25s var(--ease);z-index:200;max-width:calc(100vw - 32px)}
.snackbar.show{opacity:1;transform:translate(-50%,0)}

/* 手机全屏编辑对话框 */
@media (max-width:599px){
  #dlg-user{width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;border-radius:0;margin:0}
  #dlg-user form{padding:calc(20px + env(safe-area-inset-top)) 20px 20px}
}

/* 平板 ≥600：Navigation Rail */
@media (min-width:600px){
  .app{padding-left:80px}
  .top-bar{background:var(--surface);padding-left:24px}
  .nav{top:0;bottom:auto;right:auto;width:80px;height:100vh;padding:20px 0;flex-direction:column;align-items:center;gap:14px;box-shadow:none;background:var(--surface)}
  .nav-item{flex:none;width:80px}
  .nav-item .pill{width:56px}
  .nav-brand{display:flex;margin-bottom:6px} .nav-brand div:not(.brand-mark){display:none}
  .content{padding:8px 24px 32px}
  .fab{bottom:24px;right:24px}
  .stat-grid{grid-template-columns:repeat(4,1fr)}
  .grid-2{grid-template-columns:1fr 1fr}
  .toolbar{flex-direction:row;align-items:center;justify-content:space-between} .search{width:340px}
  .snackbar{bottom:32px}
}
.brand-mark{width:44px;height:44px;border-radius:14px;background:var(--primary-container);color:var(--on-primary-container);display:flex;align-items:center;justify-content:center}

/* PC ≥1024：Navigation Drawer + 表格 */
@media (min-width:1024px){
  .app{padding-left:var(--nav-w)}
  .nav{width:var(--nav-w);align-items:stretch;padding:24px 12px;gap:4px;background:var(--surface-1)}
  .nav-brand{display:flex;align-items:center;gap:12px;padding:0 12px 20px}
  .nav-brand div:not(.brand-mark){display:flex;flex-direction:column;line-height:1.25}
  .nav-brand span{font-size:12px;color:var(--on-surface-var)}
  .fab-extended{display:flex;align-items:center;gap:12px;height:56px;margin:0 4px 16px;padding:0 20px;border-radius:16px;background:var(--primary-container);color:var(--on-primary-container);font-weight:500;box-shadow:0 1px 3px rgba(0,0,0,.3)}
  .fab-extended:hover{box-shadow:0 3px 8px rgba(0,0,0,.35)}
  .nav-item{flex-direction:row;width:auto;height:56px;gap:12px;padding:0 16px;border-radius:28px;font-size:14px;justify-content:flex-start;position:relative}
  .nav-item .pill{width:auto;height:auto;background:none!important}
  .nav-item.active{background:var(--secondary-container);color:var(--on-secondary-container)}
  .nav-item:not(.active):hover{background:color-mix(in srgb,var(--on-surface) 8%,transparent)}
  .nav-spacer{display:block;flex:1}
  .nav-link-out{display:block;padding:12px 16px;color:var(--on-surface-var);font-size:13px}
  .nav-link-out:hover{color:var(--primary)}
  .fab{display:none}
  .top-bar{background:var(--surface);padding:0 24px 0 32px;height:72px}
  .top-bar h1{font-size:26px}
  .content{padding:8px 32px 40px}
  .table-card{display:block} .user-cards{display:none}
}