/* 落雪匿名邮箱 · 管理后台 */
:root{
  --side:#16283c; --side-2:#1d3450; --ink:#1f2d3d; --soft:#5b6b7d; --faint:#8a99ab;
  --brand:#3f7fb8; --brand-2:#5b97cc; --line:#e4edf5; --bg:#f3f7fb;
  --ok:#2e9e6b; --warn:#d99327; --danger:#d05a63; --card:#fff;
  --shadow:0 10px 30px -14px rgba(47,102,153,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
a{cursor:pointer;text-decoration:none;color:inherit}
.layout{display:flex;min-height:100vh}

/* 侧栏 */
.side{width:232px;background:linear-gradient(180deg,var(--side),var(--side-2));color:#cdd9e6;
  display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:30}
.side-brand{display:flex;align-items:center;gap:11px;padding:22px 20px;color:#fff}
.side-brand .snow{width:38px;height:38px;display:grid;place-items:center;font-size:20px;border-radius:11px;
  background:linear-gradient(145deg,#5b97cc,#3f7fb8)}
.side-brand strong{display:block;font-size:15.5px}.side-brand small{font-size:11px;opacity:.7}
#nav{flex:1;padding:8px 12px;overflow:auto}
.nav-item{display:flex;align-items:center;gap:11px;padding:11.5px 14px;border-radius:11px;margin-bottom:3px;
  font-size:14px;color:#b9c8d8;transition:.18s;user-select:none}
.nav-item i{font-style:normal;font-size:16px;width:20px;text-align:center}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-item.active{background:linear-gradient(145deg,var(--brand-2),var(--brand));color:#fff;box-shadow:0 8px 18px -8px var(--brand)}
.side-foot{padding:14px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:4px}
.side-foot a{padding:9px 12px;border-radius:9px;font-size:13px;color:#b9c8d8}
.side-foot a:hover{background:rgba(255,255,255,.07);color:#fff}
.side-foot .logout:hover{background:rgba(208,90,99,.25);color:#ffd7da}

/* 主区 */
.main{flex:1;margin-left:232px;min-width:0}
.topbar{height:64px;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:16px;padding:0 26px;position:sticky;top:0;z-index:20}
.topbar h2{font-size:18px;font-weight:700}
.top-right{margin-left:auto}.who{color:var(--soft);font-size:13px}
.menu-toggle{display:none;border:0;background:none;font-size:22px;cursor:pointer}
.content{padding:26px;max-width:1180px}

/* 卡片/栅格 */
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:20px}
.stat{position:relative;overflow:hidden}
.stat .ico{font-size:24px}.stat .num{font-size:28px;font-weight:800;margin:6px 0 2px;font-variant-numeric:tabular-nums}
.stat .lab{color:var(--faint);font-size:12.5px}
.stat .bar{position:absolute;right:-10px;top:-10px;font-size:64px;opacity:.07}
.card-title{font-size:15px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.card-title .act{margin-left:auto}

/* 表格 */
.table-wrap{overflow:auto;border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:#f6fafd;color:var(--soft);font-weight:600;font-size:12.5px;position:sticky;top:0}
tbody tr:hover{background:#f8fbfe}
td.wrap{white-space:normal;word-break:break-all;max-width:320px}
.tag{display:inline-block;padding:2px 9px;border-radius:99px;font-size:11.5px;font-weight:600}
.tag.blue{background:#e3effa;color:#2f6699}.tag.green{background:#e2f5ec;color:var(--ok)}
.tag.gray{background:#eef2f6;color:var(--soft)}.tag.red{background:#fdecee;color:var(--danger)}
.tag.gold{background:#fbf1dd;color:var(--warn)}

/* 按钮/表单 */
.btn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 15px;border-radius:10px;cursor:pointer;
  font-size:13px;font-weight:600;font-family:inherit;transition:.18s;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn.primary{background:linear-gradient(145deg,var(--brand-2),var(--brand));color:#fff;border-color:transparent}
.btn.danger{color:var(--danger)}.btn.danger:hover{border-color:var(--danger);background:#fdecee}
.btn.sm{padding:5px 10px;font-size:12px}
.btn[disabled]{opacity:.5;pointer-events:none}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;align-items:center}
.toolbar .grow{flex:1}
input,select,textarea{font-family:inherit;font-size:13.5px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(63,127,184,.12)}
.field{margin-bottom:14px}.field label{display:block;font-size:12.5px;font-weight:600;color:var(--soft);margin-bottom:6px}
.field .hint{font-size:11.5px;color:var(--faint);margin-top:5px;line-height:1.6}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.search{min-width:240px;max-width:340px}

/* 迷你趋势图 */
.bars{display:flex;align-items:flex-end;gap:8px;height:140px;padding-top:10px}
.bars .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px;height:100%}
.bars .stack{width:60%;display:flex;flex-direction:column-reverse;gap:2px;flex:1;justify-content:flex-start}
.bars .bi{border-radius:4px 4px 0 0;min-height:2px}.bi.in{background:var(--brand)}.bi.out{background:#9fc6e6}
.bars .d{font-size:11px;color:var(--faint)}
.legend{display:flex;gap:16px;font-size:12px;color:var(--soft);margin-top:10px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px}

.pager{display:flex;gap:8px;justify-content:flex-end;align-items:center;margin-top:14px;font-size:13px;color:var(--soft)}

/* 弹层 */
.modal-mask{position:fixed;inset:0;background:rgba(22,40,60,.4);backdrop-filter:blur(4px);display:none;place-items:center;z-index:60;padding:20px}
.modal-mask.show{display:grid}
.modal{background:#fff;border-radius:16px;width:min(560px,100%);max-height:88vh;overflow:auto;box-shadow:0 30px 70px -20px rgba(0,0,0,.4);animation:pop .25s}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:none;opacity:1}}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff}
.modal-head h3{font-size:16px}.modal-head button{border:0;background:none;font-size:16px;cursor:pointer;color:var(--faint)}
.modal-body{padding:20px}

/* toast */
.toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,16px);background:rgba(22,40,60,.94);color:#fff;
  padding:11px 22px;border-radius:99px;font-size:13.5px;opacity:0;pointer-events:none;transition:.28s;z-index:90}
.toast.show{opacity:1;transform:translate(-50%,0)}.toast.err{background:var(--danger)}
.empty-tip{text-align:center;color:var(--faint);padding:40px 0;font-size:13px}
.muted{color:var(--faint);font-size:12.5px}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}
.logbox{background:#0f1d2c;color:#cfe3f5;border-radius:10px;padding:14px;font-family:ui-monospace,Menlo,monospace;font-size:12px;
  white-space:pre-wrap;max-height:260px;overflow:auto;line-height:1.6}
.dns-box{background:#f6fafd;border:1px dashed #b9d4ec;border-radius:10px;padding:14px;font-size:12.5px;line-height:1.9}
.kvline{display:flex;gap:8px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:13px}
.kvline b{min-width:96px;color:var(--soft);font-weight:600}

/* 登录页 */
.login-body{display:grid;place-items:center;min-height:100vh;
  background:radial-gradient(800px 400px at 80% -10%,#dce9f6,transparent),linear-gradient(160deg,#eaf2fb,#f7fbff)}
.login-card{width:min(380px,92vw);background:rgba(255,255,255,.7);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.85);
  border-radius:22px;box-shadow:0 24px 60px -20px rgba(47,102,153,.4);padding:34px;text-align:center}
.login-logo{width:56px;height:56px;margin:0 auto 12px;display:grid;place-items:center;font-size:28px;color:#fff;border-radius:16px;
  background:linear-gradient(145deg,#5b97cc,#3f7fb8)}
.login-card h1{font-size:19px}.login-sub{color:var(--faint);font-size:12.5px;margin:4px 0 22px}
.login-card label{display:block;text-align:left;font-size:12.5px;color:var(--soft);font-weight:600;margin:12px 0 6px}
.login-card input{padding:12px 14px}
.login-card button{margin-top:22px;width:100%;padding:13px;border:0;border-radius:12px;background:linear-gradient(145deg,#5b97cc,#3f7fb8);color:#fff;font-size:15px;font-weight:700;cursor:pointer}
.back-home{display:inline-block;margin-top:16px;font-size:12.5px;color:var(--brand)}
.form-err{background:#fdecee;color:#b23b44;border-radius:10px;padding:9px 13px;font-size:12.5px;margin-bottom:8px}

@media(max-width:860px){
  .side{transform:translateX(-100%);transition:.25s}.side.open{transform:none}
  .main{margin-left:0}.menu-toggle{display:block}.form-grid{grid-template-columns:1fr}
}

/* 邮件服务器页面 */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:700;margin-left:8px}
.badge.green{background:#e6f7ee;color:#2e9e6b}
.badge.red{background:#fdecee;color:#d05a63}
.kv{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.kv span{color:var(--faint)}
.kv b{color:var(--soft);font-weight:600;text-align:right;max-width:60%;word-break:break-all}

/* ===== 统一加载 / 错误兜底状态 ===== */
.state-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:70px 20px;color:var(--faint)}
.state-box .spin{width:38px;height:38px;border:3px solid #d8e6f3;border-top-color:var(--brand);border-radius:50%;animation:lxspin .8s linear infinite}
@keyframes lxspin{to{transform:rotate(360deg)}}
.state-text{font-size:14px}
.state-ico{font-size:42px}
.state-msg{font-size:14px;color:#b23b44;text-align:center;max-width:520px;line-height:1.7;background:#fdecee;border:1px solid #f3c9cd;border-radius:12px;padding:14px 18px;word-break:break-all}
.state-actions{display:flex;gap:10px}

/* ===== 部署向导 ===== */
.deploy-head .muted{font-size:13.5px;line-height:1.8}
.step-card{display:flex;gap:16px;margin-top:14px}
.step-no{flex:0 0 34px;height:34px;border-radius:50%;background:linear-gradient(145deg,#5b97cc,#3f7fb8);color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
.step-body{flex:1;min-width:0}
.step-title{font-weight:700;font-size:15px;margin-bottom:10px;color:var(--ink)}
.dns-rec{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:8px 0;background:#fafcfe}
.dns-label{font-size:12.5px;font-weight:600;color:var(--soft);margin-bottom:6px}
.dns-val{display:flex;align-items:center;gap:10px}
.dns-val code{flex:1;background:#eef5fb;border:1px dashed #b9d4ec;border-radius:6px;padding:8px 10px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;word-break:break-all;color:#23507a}
.copy-btn{flex:0 0 auto}
.dns-note{font-size:12px;color:var(--faint);margin-top:6px;line-height:1.6}
.check-list{display:flex;flex-direction:column;gap:10px;font-size:13.5px;line-height:1.7}
.check-list code,.step-body code{background:#eef5fb;border-radius:4px;padding:1px 6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:#23507a}
.state-line{margin-top:12px;font-size:13.5px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ===== 环境能力检测 ===== */
.env-caps{border-top:1px dashed var(--line);padding-top:10px;display:flex;flex-direction:column;gap:6px}
.caps-title{font-size:12.5px;font-weight:700;color:var(--soft);margin-bottom:2px}
.cap{font-size:12.5px;padding:5px 10px;border-radius:8px}
.cap.ok{background:#e6f7ee;color:#2e9e6b}
.cap.warn{background:#fdf3e0;color:#b97c1e}