/* ============================================================
   卡密验证系统 · 全局样式（白色系）
   ============================================================ */
:root{
  --brand:#6366f1;
  --brand2:#06b6d4;
  --bg:#f3f5fa;
  --line:rgba(15,23,42,.1);
  --panel:#ffffff;
  --txt:#1e293b;
  --mut:#64748b;
  --ok:#059669;
  --warn:#d97706;
  --bad:#dc2626;
  --r:16px;
  --sh:0 1px 3px rgba(15,23,42,.06);
  --sh-lg:0 20px 50px rgba(15,23,42,.14);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--txt);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}
input,select,button,textarea{font-family:inherit;font-size:14px}

/* ---------- 内联 SVG 图标 ---------- */
svg.ic{flex-shrink:0;vertical-align:-2px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 16px;border:0;border-radius:11px;cursor:pointer;font-size:14px;font-weight:500;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  transition:transform .18s,box-shadow .18s,opacity .18s;white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(99,102,241,.28)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:#eef1f8;color:var(--txt);border:1px solid var(--line)}
.btn.ghost:hover{background:#e3e8f4;box-shadow:none}
.btn.line{background:transparent;border:1px solid var(--line);color:var(--mut)}
.btn.line:hover{color:var(--txt);border-color:rgba(15,23,42,.25);box-shadow:none}
.btn.danger{background:linear-gradient(135deg,#ef4444,#f97316)}
.btn.danger:hover{box-shadow:0 8px 22px rgba(239,68,68,.26)}
.btn.sm{padding:6px 11px;font-size:12.5px;border-radius:9px}
.btn.block{width:100%;padding:13px;font-size:15px}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

/* ---------- 提示条 ---------- */
.alert{
  padding:12px 16px;border-radius:12px;margin-bottom:16px;font-size:14px;line-height:1.6;
  background:rgba(5,150,105,.09);border:1px solid rgba(5,150,105,.28);color:#047857;
  animation:fadeUp .3s ease;
}
.alert.err{background:rgba(220,38,38,.08);border-color:rgba(220,38,38,.26);color:#b91c1c}

/* ============================================================
   前台验证页
   ============================================================ */
body.front{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:28px 16px;
  background:
    radial-gradient(900px 520px at 15% -5%,rgba(99,102,241,.1),transparent 60%),
    radial-gradient(800px 480px at 105% 10%,rgba(6,182,212,.08),transparent 60%),
    var(--bg);
}
.fc-wrap{width:100%;max-width:520px;animation:fadeUp .5s ease}
.fc-card{
  position:relative;padding:38px 34px 30px;border-radius:24px;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-lg);overflow:hidden;
}
.fc-card::before{
  content:'';position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--brand),var(--brand2));
}
.fc-logo{
  width:66px;height:66px;margin:0 auto 14px;border-radius:20px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 12px 30px rgba(99,102,241,.3);
}
.fc-title{
  margin:0 0 6px;text-align:center;font-size:25px;font-weight:700;letter-spacing:-.4px;
  background:linear-gradient(90deg,var(--brand),var(--brand2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.fc-sub{margin:0;text-align:center;color:var(--mut);font-size:14px}
.fc-notice{
  display:flex;gap:9px;align-items:flex-start;margin:18px 0 4px;padding:11px 14px;border-radius:12px;
  background:#f8fafc;border:1px solid var(--line);color:var(--mut);font-size:13px;line-height:1.65;
}
.fc-notice span{flex-shrink:0;color:var(--warn)}

.fc-field{margin-top:18px}
.fc-field label{display:block;font-size:13px;color:var(--mut);margin-bottom:7px;letter-spacing:.2px}
.fc-select{position:relative}
.fc-select select{
  width:100%;padding:14px 40px 14px 15px;border-radius:13px;appearance:none;-webkit-appearance:none;
  background:#f8fafc;border:1px solid var(--line);color:var(--txt);font-size:15px;outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.fc-select select:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(99,102,241,.14)}
.fc-select select option{background:#fff;color:var(--txt)}
.fc-select i{position:absolute;right:15px;top:50%;transform:translateY(-50%);pointer-events:none;color:var(--mut);font-style:normal;font-size:12px}
.fc-code{
  width:100%;padding:15px;border-radius:13px;text-align:center;letter-spacing:2.5px;font-size:17px;font-weight:600;
  background:#f8fafc;border:1px solid var(--line);color:var(--txt);outline:none;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;text-transform:uppercase;
  transition:border-color .2s,box-shadow .2s;
}
.fc-code::placeholder{letter-spacing:1px;font-weight:400;color:#94a3b8}
.fc-code:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(99,102,241,.14)}

.fc-adv{margin-top:14px;font-size:13px}
.fc-adv a{color:var(--mut);border-bottom:1px dashed rgba(15,23,42,.2)}
.fc-adv a:hover{color:var(--txt)}
#advBox{margin-top:10px;padding:12px;border-radius:12px;background:#f8fafc;border:1px solid var(--line)}
#advBox input{
  width:100%;padding:10px 12px;border-radius:10px;background:#fff;border:1px solid var(--line);
  color:var(--txt);font-size:12.5px;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.fc-mini{
  margin-top:9px;padding:7px 12px;border-radius:9px;cursor:pointer;font-size:12.5px;
  background:#eef1f8;border:1px solid var(--line);color:var(--txt);
}
.fc-mini:hover{background:#e3e8f4}
.fc-tip{margin:9px 0 0;font-size:12px;color:#94a3b8;line-height:1.6}

.fc-acts{display:flex;gap:10px;margin-top:22px}
.fc-btn{
  flex:1;padding:14px;border:0;border-radius:13px;cursor:pointer;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
  transition:transform .18s,box-shadow .18s;
}
.fc-btn:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(99,102,241,.3)}
.fc-btn.ghost{background:#eef1f8;border:1px solid var(--line);font-weight:500;color:var(--txt)}
.fc-btn.ghost:hover{background:#e3e8f4;box-shadow:none}
.fc-btn[disabled]{opacity:.65;cursor:not-allowed;transform:none}

/* 结果卡片 */
.fc-result{
  margin-top:20px;padding:0;max-height:0;opacity:0;overflow:hidden;
  border-radius:16px;background:#f8fafc;border:1px solid var(--line);
  transition:max-height .45s ease,opacity .35s ease,padding .35s ease;
}
.fc-result.show{max-height:460px;opacity:1;padding:18px}
.fc-res-head{display:flex;align-items:center;gap:13px;margin-bottom:14px}
.fc-res-ic{
  width:42px;height:42px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));flex-shrink:0;
}
.fc-res-ic.ok{background:linear-gradient(135deg,#10b981,#059669)}
.fc-res-ic.warn{background:linear-gradient(135deg,#f59e0b,#d97706)}
.fc-res-title{font-size:16px;font-weight:600}
.fc-badge{display:inline-block;margin-top:3px;padding:3px 10px;border-radius:20px;font-size:11.5px;font-weight:600}
.fc-badge.unused{background:rgba(100,116,139,.12);color:#475569}
.fc-badge.used{background:rgba(5,150,105,.12);color:#047857}
.fc-badge.expired{background:rgba(220,38,38,.1);color:#b91c1c}
.fc-res-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.fc-res-item{padding:11px 13px;border-radius:11px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh)}
.fc-res-item span{display:block;font-size:11.5px;color:var(--mut);margin-bottom:4px}
.fc-res-item b{font-size:13.5px;font-weight:600;word-break:break-all;font-family:ui-monospace,Menlo,Consolas,monospace}
#rJump{display:block;margin-top:14px;text-align:center;text-decoration:none}

.fc-foot{text-align:center;color:#94a3b8;font-size:12.5px;margin-top:18px}

/* 前台模态框 */
.fc-modal{
  position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:99;
  background:rgba(15,23,42,.4);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);padding:20px;
}
.fc-modal.show{display:flex;animation:fadeIn .22s ease}
.fc-modal-box{
  width:100%;max-width:340px;padding:28px 26px 22px;border-radius:20px;text-align:center;
  background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-lg);animation:pop .28s ease;
}
.fc-modal-ic{
  width:56px;height:56px;margin:0 auto 14px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
}
.fc-modal-ic.ok{background:linear-gradient(135deg,#10b981,#059669)}
.fc-modal-ic.err{background:linear-gradient(135deg,#ef4444,#dc2626)}
.fc-modal-ic.info{background:linear-gradient(135deg,#94a3b8,#64748b)}
.fc-modal-box h3{margin:0 0 8px;font-size:18px;font-weight:600}
.fc-modal-box p{margin:0 0 20px;color:var(--mut);font-size:14px;line-height:1.7}

/* ============================================================
   登录 / 注册页
   ============================================================ */
body.login{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:
    radial-gradient(900px 520px at 20% -10%,rgba(99,102,241,.1),transparent 60%),
    radial-gradient(800px 480px at 100% 10%,rgba(6,182,212,.08),transparent 60%),
    var(--bg);
}
.lg-box{
  width:100%;max-width:400px;padding:38px 34px 30px;border-radius:22px;text-align:center;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--sh-lg);animation:fadeUp .45s ease;
}
.lg-logo{
  width:62px;height:62px;margin:0 auto 13px;border-radius:19px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 12px 28px rgba(99,102,241,.28);
}
.lg-box h1{margin:0 0 5px;font-size:22px;font-weight:700}
.lg-sub{margin:0 0 20px;color:var(--mut);font-size:13.5px}
.lg-box label{display:block;text-align:left;font-size:13px;color:var(--mut);margin:14px 0 7px}
.lg-box input{
  width:100%;padding:13px 15px;border-radius:12px;outline:none;
  background:#f8fafc;border:1px solid var(--line);color:var(--txt);font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
.lg-box input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(99,102,241,.14)}
.lg-acts{margin-top:22px}
.lg-hint{margin-top:18px;font-size:13px;color:var(--mut)}
.lg-hint a{color:var(--mut);border-bottom:1px dashed rgba(15,23,42,.18)}
.lg-hint a:hover{color:var(--txt)}

/* ============================================================
   后台
   ============================================================ */
body.admin{min-height:100vh;background:
  radial-gradient(1000px 520px at 0% -10%,rgba(99,102,241,.07),transparent 55%),
  radial-gradient(900px 500px at 100% 0%,rgba(6,182,212,.06),transparent 55%),
  var(--bg);
}

/* 侧边栏 */
.side{
  position:fixed;left:0;top:0;bottom:0;width:232px;z-index:40;display:flex;flex-direction:column;
  background:#fff;
  border-right:1px solid var(--line);box-shadow:1px 0 0 rgba(15,23,42,.03);
}
.brand{display:flex;align-items:center;gap:10px;padding:20px 18px;border-bottom:1px solid var(--line)}
.brand .dot{
  width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 6px 16px rgba(99,102,241,.28);flex-shrink:0;
}
.brand b{font-size:14.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side nav{flex:1;overflow-y:auto;padding:12px 10px}
.side nav a{
  display:flex;align-items:center;gap:11px;padding:11px 13px;margin-bottom:3px;border-radius:11px;
  font-size:14px;color:var(--mut);transition:background .18s,color .18s;
}
.side nav a span{width:19px;display:inline-flex;align-items:center;justify-content:center}
.side nav a:hover{background:#f1f5f9;color:var(--txt)}
.side nav a.active{
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;font-weight:600;box-shadow:0 6px 18px rgba(99,102,241,.25);
}
.side nav a.active svg.ic{color:#fff}
.me{padding:14px 18px;border-top:1px solid var(--line)}
.me b{display:block;font-size:13.5px}
.me span{display:block;font-size:11.5px;color:var(--mut);margin-top:3px}

/* 主区 */
.main{margin-left:232px;min-height:100vh;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;
  padding:14px 22px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.topbar .left{display:flex;align-items:center;gap:12px}
.topbar .right{display:flex;align-items:center;gap:10px}
.menu-btn{
  display:none;width:38px;height:38px;border-radius:10px;cursor:pointer;
  background:#fff;border:1px solid var(--line);color:var(--txt);
}
.pg{font-size:17px;font-weight:600}
.avatar{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));
}
.content{padding:22px;flex:1;animation:fadeUp .35s ease}

/* 统计卡 */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.stat{
  position:relative;padding:18px 20px;border-radius:var(--r);overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);box-shadow:var(--sh);
}
.stat::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--brand),var(--brand2))}
.stat.ok::before{background:linear-gradient(180deg,#10b981,#059669)}
.stat.warn::before{background:linear-gradient(180deg,#f59e0b,#d97706)}
.stat.bad::before{background:linear-gradient(180deg,#ef4444,#dc2626)}
.stat .n{font-size:27px;font-weight:700;letter-spacing:-.5px;line-height:1.15}
.stat .t{font-size:12.5px;color:var(--mut);margin-top:5px}

/* 面板 */
.page-head{margin-bottom:16px}
.page-head h2{margin:0;font-size:19px;font-weight:600}
.page-head .desc{color:var(--mut);font-size:13px;margin-top:5px}
.panel{
  margin-bottom:18px;border-radius:var(--r);overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);box-shadow:var(--sh);
}
.ph{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:14px 18px;font-size:14.5px;font-weight:600;border-bottom:1px solid var(--line);
  background:#f8fafc;
}
.ph .row-acts{display:flex;gap:7px;flex-wrap:wrap;font-weight:400}
.pb{padding:18px}

/* 表单栅格 */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.grid label{display:block;font-size:12.5px;color:var(--mut);margin-bottom:6px}
.grid input,.grid select,.pb input,.pb select{
  width:100%;padding:10px 13px;border-radius:11px;outline:none;
  background:#f8fafc;border:1px solid var(--line);color:var(--txt);font-size:14px;
  transition:border-color .2s,box-shadow .2s;
}
.grid input:focus,.grid select:focus,.pb input:focus,.pb select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(99,102,241,.14);
}
.grid select option,.pb select option{background:#fff;color:var(--txt)}
.ck{display:flex!important;align-items:center;gap:8px;font-size:13.5px;color:var(--txt)!important;cursor:pointer}
.ck input{width:auto!important}
.inline-tip{margin-left:12px;font-size:12.5px;color:var(--mut)}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{
  text-align:left;padding:11px 14px;font-weight:600;font-size:12.5px;color:var(--mut);
  background:#f8fafc;border-bottom:1px solid var(--line);white-space:nowrap;
}
.tbl td{padding:11px 14px;border-bottom:1px solid rgba(15,23,42,.06);vertical-align:middle}
.tbl tbody tr:hover{background:#f8fafc}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl .empty{text-align:center;color:var(--mut);padding:34px 0}
.tbl .dev{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11.5px;color:var(--mut);max-width:150px;overflow:hidden;text-overflow:ellipsis}
.token{
  display:inline-block;padding:3px 8px;border-radius:7px;font-size:11.5px;
  background:rgba(99,102,241,.1);color:#4f46e5;border:1px solid rgba(99,102,241,.2);
}
.row-acts{display:flex;gap:6px;flex-wrap:wrap}

/* 状态标签 */
.tag{
  display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600;white-space:nowrap;
  background:rgba(100,116,139,.12);color:#475569;
}
.tag.s1,.tag.used,.tag.active{background:rgba(5,150,105,.12);color:#047857}
.tag.s2,.tag.frozen,.tag.expired{background:rgba(220,38,38,.1);color:#b91c1c}
.tag.s0,.tag.unused{background:rgba(100,116,139,.12);color:#475569}
.tag.p0{background:rgba(99,102,241,.12);color:#4f46e5}
.tag.p1{background:rgba(6,182,212,.12);color:#0e7490}
.tag.p2{background:rgba(217,119,6,.12);color:#b45309}

/* 趋势图 */
.chart{display:flex;align-items:flex-end;gap:12px;height:170px;padding-top:8px}
.bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.bar{
  width:100%;max-width:46px;border-radius:8px 8px 3px 3px;min-height:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand2));
  transition:height .6s cubic-bezier(.4,0,.2,1),filter .2s;
}
.bar:hover{filter:brightness(1.1)}
.bl{font-size:11.5px;color:var(--mut);margin-top:8px}

/* 分页 */
.pager{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:14px 18px;border-top:1px solid var(--line)}
.pg{
  padding:6px 11px;border-radius:9px;font-size:12.5px;
  background:#fff;border:1px solid var(--line);color:var(--mut);
}
.pg:hover{color:var(--txt);background:#f1f5f9}
.pg.on{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-color:transparent;font-weight:600}
.pg.dis{opacity:.4;cursor:not-allowed}
.pg-total{font-size:12px;color:var(--mut);margin-left:auto}

/* 通用模态框 */
.modal-mask{
  position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:60;padding:20px;
  background:rgba(15,23,42,.4);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);
}
.modal-mask.show{display:flex;animation:fadeIn .2s ease}
.modal{
  width:100%;max-width:420px;padding:24px;border-radius:18px;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-lg);animation:pop .26s ease;
}
.modal h3{margin:0 0 16px;font-size:17px;font-weight:600}
.modal label{display:block;font-size:12.5px;color:var(--mut);margin:12px 0 6px}
.modal input{
  width:100%;padding:10px 13px;border-radius:11px;outline:none;
  background:#f8fafc;border:1px solid var(--line);color:var(--txt);font-size:14px;
}
.modal input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(99,102,241,.14)}
.modal-acts{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

/* 动画 */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:scale(.94) translateY(8px)}to{opacity:1;transform:none}}

/* 响应式 */
@media (max-width:900px){
  .side{transform:translateX(-100%);transition:transform .28s ease;width:250px}
  .side.open{transform:none;box-shadow:0 0 60px rgba(15,23,42,.3)}
  .main{margin-left:0}
  .menu-btn{display:flex;align-items:center;justify-content:center}
  .content{padding:16px}
  .fc-card{padding:30px 22px 24px}
  .fc-res-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
  .topbar{padding:12px 16px}
}