/* ============================================================
   后台管理样式
   ============================================================ */
:root{
    --cyan:#00e5ff;
    --blue:#2b6bff;
    --bg:#060d20;
    --sidebar:#08122b;
    --panel:#0c1a38;
    --line:rgba(0,229,255,.18);
    --text:#d3e6fb;
    --muted:#7e9cc0;
    --green:#46e0a0;
    --red:#ff6b88;
    --gold:#ffd24c;
}
*{margin:0;padding:0;box-sizing:border-box}
body{
    font-family:"Microsoft YaHei","PingFang SC",sans-serif;
    background:var(--bg);color:var(--text);min-height:100vh;
}
a{color:var(--cyan);text-decoration:none}

/* 登录页 */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;
    background:
        radial-gradient(ellipse at 30% 20%,rgba(43,107,255,.25),transparent 55%),
        radial-gradient(ellipse at 70% 90%,rgba(0,229,255,.18),transparent 55%),
        linear-gradient(rgba(0,229,255,.05) 1px,transparent 1px),
        linear-gradient(90deg,rgba(0,229,255,.05) 1px,transparent 1px),
        var(--bg);
    background-size:auto,auto,40px 40px,40px 40px;
}
.login-box{
    width:400px;max-width:92vw;padding:40px 36px;
    background:rgba(10,24,55,.75);border:1px solid var(--cyan);
    border-radius:16px;backdrop-filter:blur(12px);
    box-shadow:0 0 50px rgba(0,229,255,.25);
}
.login-box h1{font-size:22px;text-align:center;letter-spacing:4px;margin-bottom:6px;
    background:linear-gradient(90deg,#fff,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.login-box .sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:28px;letter-spacing:2px}
.login-box label{display:block;font-size:13px;color:var(--muted);margin:16px 0 8px}
.login-box input{
    width:100%;height:44px;background:rgba(0,229,255,.06);
    border:1px solid var(--line);border-radius:10px;color:#fff;
    padding:0 14px;font-size:15px;outline:none;
}
.login-box input:focus{border-color:var(--cyan);box-shadow:0 0 14px rgba(0,229,255,.3)}
.login-btn{
    width:100%;height:46px;margin-top:28px;border:none;border-radius:10px;
    background:linear-gradient(90deg,var(--blue),var(--cyan));
    color:#041226;font-size:16px;font-weight:700;letter-spacing:6px;cursor:pointer;
}
.login-btn:hover{box-shadow:0 0 22px rgba(0,229,255,.55)}
.login-err{background:rgba(255,107,136,.12);border:1px solid var(--red);color:var(--red);
    border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:18px}

/* 后台框架 */
.layout{display:flex;min-height:100vh}
.sidebar{
    width:230px;background:var(--sidebar);border-right:1px solid var(--line);
    display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh;
}
.sb-logo{padding:22px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.sb-logo .dot{width:12px;height:12px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.sb-logo span{font-size:16px;font-weight:700;letter-spacing:1px}
.nav{flex:1;padding:14px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.nav a{
    display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:9px;
    color:var(--muted);font-size:14px;transition:.15s;
}
.nav a .ico{width:18px;text-align:center}
.nav a:hover{color:var(--cyan);background:rgba(0,229,255,.07)}
.nav a.active{color:#041226;background:linear-gradient(90deg,var(--blue),var(--cyan));font-weight:700}
.nav a .badge{margin-left:auto;background:var(--red);color:#fff;font-size:11px;
    border-radius:999px;padding:1px 7px}
.nav a.active .badge{background:rgba(4,18,38,.35);color:#fff}
.sb-foot{padding:14px 20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.sb-foot a{display:block;margin-top:6px}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
    height:60px;border-bottom:1px solid var(--line);background:rgba(8,18,43,.7);
    backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:space-between;
    padding:0 28px;position:sticky;top:0;z-index:10;
}
.topbar h2{font-size:17px;letter-spacing:2px}
.topbar .admin{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted)}
.topbar .admin b{color:var(--cyan)}
.btn-logout{border:1px solid var(--line);border-radius:8px;padding:6px 14px;color:var(--muted);font-size:13px}
.btn-logout:hover{color:var(--red);border-color:var(--red)}
.content{padding:26px 28px;flex:1}

/* 卡片/网格 */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-bottom:24px}
.stat-card{
    background:linear-gradient(160deg,var(--panel),#0a1530);
    border:1px solid var(--line);border-radius:14px;padding:22px;
    position:relative;overflow:hidden;
}
.stat-card .v{font-size:32px;font-weight:800;color:var(--cyan);text-shadow:0 0 16px rgba(0,229,255,.4)}
.stat-card .l{font-size:13px;color:var(--muted);margin-top:6px;letter-spacing:1px}
.stat-card::after{content:"";position:absolute;right:-20px;top:-20px;width:90px;height:90px;
    border-radius:50%;background:radial-gradient(circle,rgba(0,229,255,.18),transparent 70%)}

.panel-box{
    background:var(--panel);border:1px solid var(--line);border-radius:14px;
    padding:22px;margin-bottom:22px;
}
.panel-box h3{font-size:15px;color:var(--cyan);letter-spacing:2px;margin-bottom:18px;
    display:flex;align-items:center;gap:9px}
.panel-box h3::before{content:"";width:4px;height:15px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}

/* 表单 */
.form-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12.5px;color:var(--muted)}
input[type=text],input[type=number],input[type=password],select,textarea{
    background:rgba(0,229,255,.05);border:1px solid var(--line);border-radius:9px;
    color:#fff;padding:9px 12px;font-size:14px;outline:none;font-family:inherit;
}
input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 10px rgba(0,229,255,.25)}
select option{background:#0a1530}
textarea{width:100%;resize:vertical}
.btn{
    border:none;border-radius:9px;padding:9px 18px;font-size:14px;cursor:pointer;
    background:linear-gradient(90deg,var(--blue),var(--cyan));color:#041226;font-weight:700;
    display:inline-flex;align-items:center;gap:6px;transition:.15s;
}
.btn:hover{box-shadow:0 0 16px rgba(0,229,255,.5)}
.btn.gray{background:rgba(255,255,255,.08);color:var(--text);border:1px solid var(--line)}
.btn.gray:hover{background:rgba(255,255,255,.15);box-shadow:none}
.btn.red{background:linear-gradient(90deg,#c83755,#ff6b88);color:#fff}
.btn.green{background:linear-gradient(90deg,#16a06f,#46e0a0);color:#041226}
.btn.sm{padding:5px 12px;font-size:12.5px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* 表格 */
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid rgba(0,229,255,.1)}
th{background:rgba(0,229,255,.08);color:var(--cyan);font-weight:600;white-space:nowrap;letter-spacing:1px}
tr:hover td{background:rgba(0,229,255,.04)}
td .actions{display:flex;gap:6px;flex-wrap:wrap}
.tag{display:inline-block;border-radius:6px;padding:2px 9px;font-size:12px}
.tag.plus{background:rgba(70,224,160,.14);color:var(--green)}
.tag.minus{background:rgba(255,107,136,.14);color:var(--red)}
.tag.pending{background:rgba(255,210,76,.14);color:var(--gold)}
.tag.source{background:rgba(0,229,255,.12);color:var(--cyan)}
.pager{display:flex;gap:8px;justify-content:flex-end;margin-top:16px;align-items:center;font-size:13px;color:var(--muted)}
.pager a,.pager span{border:1px solid var(--line);border-radius:8px;padding:5px 12px}
.pager .cur{background:var(--cyan);color:#041226;border-color:var(--cyan)}

/* 提示条 */
.alert{border-radius:10px;padding:12px 16px;font-size:13.5px;margin-bottom:18px}
.alert.ok{background:rgba(70,224,160,.1);border:1px solid var(--green);color:var(--green)}
.alert.err{background:rgba(255,107,136,.1);border:1px solid var(--red);color:var(--red)}
.alert.info{background:rgba(0,229,255,.08);border:1px solid var(--line);color:var(--cyan)}

/* 复选框 */
.ck{width:16px;height:16px;accent-color:var(--cyan);cursor:pointer}
.checkline{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer;margin:8px 0}

/* 统计条形图 */
.bar-row{display:grid;grid-template-columns:110px 1fr 50px;gap:12px;align-items:center;margin:10px 0;font-size:13px}
.bar-track{height:18px;background:rgba(255,255,255,.06);border-radius:9px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:9px;
    box-shadow:0 0 10px rgba(0,229,255,.5);transition:width .8s}
.bar-val{text-align:right;font-weight:700;color:var(--cyan)}

/* 模态框 */
.modal-mask{position:fixed;inset:0;background:rgba(2,8,20,.7);backdrop-filter:blur(3px);
    z-index:100;display:none;align-items:center;justify-content:center}
.modal-mask.show{display:flex}
.modal{width:440px;max-width:92vw;background:linear-gradient(160deg,#0d1f44,#0a1530);
    border:1px solid var(--cyan);border-radius:14px;padding:24px;box-shadow:0 0 40px rgba(0,229,255,.3)}
.modal h3{color:var(--cyan);margin-bottom:18px;font-size:16px}
.modal .field{margin-bottom:14px}
.modal .field input,.modal .field select,.modal .field textarea{width:100%}
.modal-foot{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:rgba(0,229,255,.28);border-radius:8px}