/* =====================================================================
   草蜢快扫 — 全局样式
   ===================================================================== */
:root{
  --green:#27ae60; --green-d:#1e8449;
  --blue:#2f6fed; --red:#e74c3c; --amber:#f39c12;
  --ink:#243447; --gray:#6b7a8d; --line:#e3e8ef;
  --bg:#f4f6fa; --card:#ffffff;
  --radius:10px;
  --shadow:0 2px 12px rgba(36,52,71,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Microsoft YaHei","PingFang SC",-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink); background:var(--bg); font-size:15px; line-height:1.6;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:.2em 0 .6em}
code{background:#eef1f6;padding:1px 6px;border-radius:4px;font-size:.9em}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-block; border:1px solid var(--line); background:#fff;
  color:var(--ink); padding:9px 18px; border-radius:8px; cursor:pointer;
  font-size:15px; transition:.15s; user-select:none;
}
.btn:hover{border-color:#c8d2e0;text-decoration:none}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-sm{padding:4px 12px;font-size:13px;border-radius:6px}
.btn-block{display:block;width:100%}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-primary:hover{background:#245fd0}
.btn-success{background:var(--green);border-color:var(--green);color:#fff}
.btn-success:hover{background:var(--green-d)}
.btn-danger{background:var(--red);border-color:var(--red);color:#fff}
.btn-danger:hover{background:#c93a2c}
.btn-ghost{background:transparent;border-color:transparent;color:var(--gray)}
.btn-ghost:hover{background:#eef2f8}
.btn-outline{background:#fff;border:1px solid var(--blue);color:var(--blue)}
.btn-outline:hover{background:#eef3ff}

/* ---------------- 登录页 ---------------- */
.auth-body{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,#3a7bd5,#27ae60); padding:20px;
}
.auth-admin{background:linear-gradient(135deg,#2c3e50,#4b6584)}
.auth-card{
  background:#fff; width:100%; max-width:400px; padding:38px 34px 28px;
  border-radius:16px; box-shadow:0 18px 50px rgba(0,0,0,.25); text-align:center;
}
.auth-logo{font-size:46px}
.auth-card h1{font-size:24px;margin:6px 0 2px}
.auth-sub{color:var(--gray);font-size:14px;margin:0 0 22px}
.field{display:block;text-align:left;margin-bottom:16px}
.field span{display:block;font-size:13px;color:var(--gray);margin-bottom:5px}
.field input,.field select{
  width:100%; padding:11px 13px; border:1px solid var(--line); border-radius:8px;
  font-size:15px; outline:none;
}
.field input:focus{border-color:var(--blue)}
.auth-error{color:var(--red);font-size:14px;min-height:20px;margin-bottom:8px}
.auth-ok{color:#2e7d32;font-size:14px;margin-bottom:8px}
.auth-foot{margin-top:18px;font-size:13px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.hint{color:var(--gray);font-size:12px;display:block;text-align:left}

/* ---------------- 顶栏 / 容器 ---------------- */
.topbar{
  display:flex; align-items:center; gap:24px; background:#fff;
  padding:0 22px; height:58px; box-shadow:var(--shadow); position:sticky; top:0; z-index:50;
}
.brand{font-weight:700;font-size:19px;color:var(--green-d);white-space:nowrap}
.nav{display:flex;gap:4px;flex:1;overflow-x:auto}
.nav a{padding:7px 13px;border-radius:7px;color:var(--ink);white-space:nowrap}
.nav a:hover{background:#eef2f8;text-decoration:none}
.nav a.active{background:var(--blue);color:#fff}
.userbox{display:flex;align-items:center;gap:12px;color:var(--gray);white-space:nowrap}
.container{max-width:1180px;margin:24px auto;padding:0 20px}
.footer{text-align:center;color:var(--gray);font-size:13px;padding:26px}

.card-box{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:20px}
.card-title{font-size:17px;font-weight:700;margin:0 0 16px;display:flex;justify-content:space-between;align-items:center}

/* ---------------- 表格 ---------------- */
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th,table.data td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
table.data th{background:#f7f9fc;font-weight:600;color:var(--gray);white-space:nowrap}
table.data tr:hover td{background:#fafbfe}
.t-center{text-align:center}
.table-wrap{overflow-x:auto}

/* ---------------- 表单辅助 ---------------- */
.form-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:14px;align-items:flex-end}
.form-row .field{flex:1;min-width:140px;margin:0}
.grid-answers{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.ans-cell{border:1px solid var(--line);border-radius:8px;padding:8px 10px}
.ans-cell .n{font-weight:700;margin-right:6px}
.ans-cell label{margin-right:8px;font-size:13px}
textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px;font-size:14px;font-family:inherit}

/* ---------------- Alert / 徽章 ---------------- */
.alert{padding:11px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}
.alert-success{background:#e7f7ef;color:var(--green-d)}
.alert-danger{background:#fdecea;color:#c0392b}
.alert-info{background:#eaf2fe;color:#245fd0}
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px}
.badge-green{background:#e7f7ef;color:var(--green-d)}
.badge-gray{background:#eef1f6;color:var(--gray)}
.badge-red{background:#fdecea;color:#c0392b}

.muted{color:var(--gray)}
.right{text-align:right}
.mt{margin-top:16px}.mb{margin-bottom:16px}
.flex{display:flex;gap:12px;align-items:center}

/* =====================================================================
   扫描页
   ===================================================================== */
.scan-body{background:#0e1116;height:100vh;overflow:hidden}
.scan-app{display:flex;height:100vh}
.scan-left{flex:1.15;display:flex;flex-direction:column;padding:14px;gap:12px;min-width:0}
.scan-right{
  flex:.85; min-width:330px; max-width:460px; background:#151a21;
  display:flex;flex-direction:column;position:relative;border-left:1px solid #232a34;
}

.scan-topline{display:flex;align-items:center;gap:16px;color:#e8edf4}
.hw-pick{display:flex;align-items:center;gap:8px}
.hw-pick select{padding:7px 10px;border-radius:7px;border:1px solid #2c3543;background:#1d242e;color:#fff;font-size:14px;max-width:260px}
.class-pick{color:#c4ccd8;font-size:14px}
.class-pick strong{color:var(--green)}
.scan-topline .btn-ghost{color:#c4ccd8;margin-left:auto}

.video-wrap{
  flex:1; position:relative; border-radius:12px; overflow:hidden;
  background:#000; display:flex; align-items:center; justify-content:center;
}
#video{width:100%;height:100%;object-fit:contain}
.scan-guide{
  position:absolute; color:#8b97a7; font-size:16px; text-align:center;padding:20px;
}
.result-overlay{
  position:absolute; left:50%; bottom:22px; transform:translateX(-50%);
  background:rgba(20,26,33,.82); backdrop-filter:blur(4px);
  color:#fff; padding:14px 26px; border-radius:12px; text-align:center; min-width:230px;
  border:1px solid #2c3543;
}
.result-overlay.good{border-color:var(--green)}
.result-overlay.bad{border-color:var(--red)}
.ro-id{font-size:17px;font-weight:700}
.ro-score{font-size:32px;color:var(--green);font-weight:800;line-height:1.2}
.bad .ro-score{color:var(--red);font-size:18px}
.ro-msg{color:#f0b24a;font-size:13px;margin-top:3px}

.scan-actions{display:flex;align-items:center;gap:12px}
.busy-flag{color:#8b97a7;font-size:13px}
.switch{display:flex;align-items:center;gap:6px;color:#c4ccd8;font-size:13px;cursor:pointer}

/* 右侧统计/列表 */
.stats-bar{display:flex;flex-wrap:wrap;gap:8px;padding:14px}
.stat{
  flex:1;background:#1d242e;border-radius:10px;text-align:center;padding:10px 4px;
}
.stat-n{display:block;font-size:24px;font-weight:800;color:var(--green)}
.stat-warn{color:var(--amber)}
.stat-l{font-size:12px;color:#8b97a7}
.scan-progress{
  flex-basis:100%;height:8px;border-radius:5px;background:#0f141c;overflow:hidden;
}
.scan-progress i{
  display:block;height:100%;width:0;background:var(--green);border-radius:5px;
  font-size:0;transition:width .3s;
}

.stats-bar .auto-switch{
  flex-basis:100%;justify-content:flex-end;margin-top:6px;font-size:12px;
}

.record-list{flex:1;overflow-y:auto;padding:4px 14px}
.rec-item{background:#1d242e;border-radius:10px;padding:10px 13px;margin-bottom:9px}
.rec-head{display:flex;align-items:center;gap:8px;color:#e8edf4}
.rec-no{color:#8b97a7}
.rec-who{flex:1;font-weight:600}
.rec-score{color:var(--green);font-weight:800}
.rec-warn{color:#f0b24a;font-size:13px;margin-top:4px}

.unsub-wrap{padding:12px 14px;border-top:1px solid #232a34}
.unsub-wrap .btn-outline{background:transparent;color:#9fd0ff;border-color:#34507a}
.unsub-panel{margin-top:10px;max-height:180px;overflow-y:auto;background:#11161d;border-radius:8px;padding:6px 10px}
.unsub-item{color:#d7dee9;padding:5px 2px;border-bottom:1px solid #1c232c;font-size:14px}
.unsub-item small{color:#8b97a7}
.unsub-empty{color:var(--green);text-align:center;padding:12px}

.collapse-btn{
  position:absolute;top:8px;right:10px;background:transparent;border:none;color:#6b7686;
  font-size:18px;cursor:pointer;z-index:5;display:none;
}

/* ---------------- 模态框 ---------------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(8,11,15,.66);display:flex;
  align-items:center;justify-content:center;z-index:100;
}
/* 类选择器 display:flex 会覆盖 [hidden] 的默认 display:none，必须显式声明 */
.modal-mask[hidden]{display:none}
.modal{background:#fff;border-radius:14px;width:min(440px,92vw);padding:24px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.modal h3{margin-top:0}
.modal-body{color:var(--ink);font-size:15px;margin-bottom:18px}
.modal-body small{color:var(--gray)}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
.cand-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.cand-btn{text-align:left}

/* =====================================================================
   响应式：手机端 全屏摄像头 + 底部浮层
   ===================================================================== */
@media (max-width:1023px){
  .scan-body{height:100vh;overflow:hidden}
  .scan-app{flex-direction:column;padding-bottom:42vh;box-sizing:border-box;height:100vh}
  .scan-left{flex:1;padding:10px;min-height:0;overflow:hidden}
  .scan-topline .btn-ghost{margin-left:0}
  .class-pick{display:none}
  .video-wrap{flex:1;min-height:0}
  .scan-actions{flex-wrap:nowrap;gap:8px}
  .scan-actions .btn{font-size:13px;padding:8px 12px}

  .scan-right{
    position:fixed;left:0;right:0;bottom:0;max-width:none;min-width:0;
    background:rgba(15,19,26,.92); backdrop-filter:blur(8px);
    border-left:none;border-top:1px solid #2c3543;
    max-height:42vh; border-radius:16px 16px 0 0; z-index:10;
  }
  .scan-right.collapsed .stats-bar,
  .scan-right.collapsed .record-list,
  .scan-right.collapsed .unsub-wrap{display:none}
  .scan-right.collapsed{max-height:46px}
  .scan-app.right-collapsed{padding-bottom:46px}
  .collapse-btn{display:block}
  .stats-bar{padding:10px}
  .stat-n{font-size:19px}
  .record-list{max-height:20vh}
  .unsub-panel{position:fixed;bottom:42vh;left:10px;right:10px;max-height:36vh;background:rgba(20,25,33,.97)}
}

/* =====================================================================
   管理后台（深色侧栏可选，这里用浅色沿用 topbar）
   ===================================================================== */
.admin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.kpi{background:#fff;border-radius:12px;box-shadow:var(--shadow);padding:18px}
.kpi .v{font-size:28px;font-weight:800;color:var(--blue)}
.kpi .l{color:var(--gray);font-size:13px}
.pagination{display:flex;gap:6px;margin-top:14px;justify-content:center}
.pagination a,.pagination span{padding:5px 11px;border:1px solid var(--line);border-radius:6px}
.pagination .current{background:var(--blue);color:#fff;border-color:var(--blue)}

.chart-box{width:100%;height:340px}
.inline-form{display:inline}

/* ---------------- 移动端导航（汉堡菜单） ---------------- */
.nav-toggle{display:none}
@media (max-width:900px){
  .topbar{height:54px;gap:12px;padding:0 14px}
  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;font-size:20px;line-height:1;
    background:#f1f4f9;border:0;border-radius:9px;color:var(--ink);cursor:pointer;
  }
  .brand{font-size:17px}
  .nav{
    display:none;position:absolute;top:54px;left:0;right:0;
    flex-direction:column;background:#fff;box-shadow:0 12px 26px rgba(20,30,50,.16);
    padding:8px 14px;max-height:calc(100vh - 54px);overflow-y:auto;
  }
  .nav.open{display:flex}
  .nav a{padding:13px 12px;font-size:16px;border-radius:9px}
  .userbox .who{display:none}
  .container{margin:16px auto;padding:0 14px}
}