:root{
  --bg:#f3f5f9;--card:#fff;--line:#e3e7ee;--line-strong:#cfd6e1;
  --text:#14181f;--muted:#667085;--faint:#98a2b3;
  /* màu thương hiệu eGURU (eguru.vn: logo/nút chính #0713a3, nhấn đỏ #dd2f2c) */
  --accent:#0713a3;--accent-dark:#050d7c;--accent-soft:#eef0fd;--ring:rgba(7,19,163,.18);
  --brand:#0713a3;--brand-2:#2f5fe0;--red:#dd2f2c;
  --ink:#0c0f16;--ink-2:#1d2939;
  --ok:#12b76a;--ok-soft:#ecfdf3;--ok-text:#067647;
  --warn:#f79009;--warn-soft:#fffaeb;--warn-text:#b54708;
  --bad:#d92d20;--bad-soft:#fef3f2;--bad-text:#b42318;
  --info-soft:#eff4ff;--info-text:#1849a9;
  --radius:14px;--radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-lg:0 12px 32px -8px rgba(16,24,40,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;font-size:16px;line-height:1.45;background:var(--bg);color:var(--text)}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25}
h3{font-size:1.1rem}
code{font-family:Consolas,ui-monospace,monospace;font-size:.9em;background:#f2f4f7;padding:2px 6px;border-radius:6px;word-break:break-all}
[hidden]{display:none!important}

/* ---------- thanh trên ---------- */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;padding:10px 20px;background:linear-gradient(90deg,var(--brand),#0b1fc0);color:#fff;box-shadow:0 2px 10px rgba(7,19,163,.3)}
.top a{color:#dfe3ff}
.top a:hover{color:#fff;text-decoration:none}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem;white-space:nowrap;color:inherit}
.brand img{height:30px;width:auto;display:block}
.brand .brand-sep{width:1px;height:22px;background:rgba(255,255,255,.35)}
.brand-lg{flex-direction:column;align-items:flex-start;gap:14px;font-size:1.35rem;color:var(--text)}
.brand-lg img{height:44px}
.top-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.top-nav a{padding:8px 12px;border-radius:8px;font-size:.95rem}
.top-nav a:hover{background:rgba(255,255,255,.08)}

/* ---------- ô tìm ---------- */
.search{flex:1;display:flex;gap:8px;max-width:760px}
.search-box{position:relative;flex:1}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--faint);pointer-events:none}
.search .search-box input{width:100%;font-size:1.1rem;padding:12px 44px 12px 44px;border:2px solid transparent;border-radius:12px;background:#fff;color:var(--text);outline:none}
.search .search-box input:focus{border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.35)}
.search button[type=submit]{background:var(--red)}
.search button[type=submit]:hover{background:#b0231d}
.search .clear{position:absolute;right:8px;top:50%;transform:translateY(-50%);padding:4px 10px;background:none;color:var(--faint);font-size:1.3rem;line-height:1}
.search .clear:hover{color:var(--text);background:none}
.search button[type=submit]{padding:0 22px;border-radius:12px}

main{max-width:1440px;margin:0 auto;padding:20px}

/* ---------- nút ---------- */
input,select,button,textarea{font:inherit;color:inherit}
button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--accent);color:#fff;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background .15s,box-shadow .15s,transform .05s}
button:hover,.btn:hover{background:var(--accent-dark);text-decoration:none}
button:active{transform:translateY(1px)}
button:disabled{opacity:.55;cursor:not-allowed}
button.secondary,.btn.secondary{background:#fff;color:var(--text);border-color:var(--line-strong)}
button.secondary:hover,.btn.secondary:hover{background:#f9fafb;border-color:#98a2b3}
button.ghost{background:transparent;color:var(--muted);border-color:transparent;padding:6px 10px}
button.ghost:hover{background:#f2f4f7;color:var(--text)}
button.danger{background:#fff;color:var(--bad-text);border-color:#fecdca}
button.danger:hover{background:var(--bad-soft)}
.btn-lg{padding:14px 20px;font-size:1.05rem;width:100%}

/* ---------- ô nhập ---------- */
input[type=text],input[type=password],input[type=number],input[type=time],input[type=date],input:not([type]),select,textarea{padding:10px 12px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:#fff;min-width:0;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent)}
label{display:flex;flex-direction:column;gap:6px;font-size:.88rem;font-weight:600;color:var(--muted)}
label.field{color:var(--text)}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end}
.row label{flex:1 1 170px}

/* ---------- thẻ ---------- */
.card,.order-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}
.card-head{display:flex;align-items:center;gap:12px;justify-content:space-between;flex-wrap:wrap;margin-bottom:14px}
.card-head h3{margin:0}

/* ---------- thông báo ---------- */
.msg{display:flex;align-items:flex-start;gap:10px;padding:12px 16px;border-radius:var(--radius-sm);background:var(--info-soft);color:var(--info-text);border:1px solid #d1e0ff;margin-bottom:16px;font-weight:500}
.msg.bad{background:var(--bad-soft);color:var(--bad-text);border-color:#fecdca}
.msg.ok{background:var(--ok-soft);color:var(--ok-text);border-color:#abefc6}
.msg .spinner{margin-top:2px}
.err{color:var(--bad-text)}
.muted{color:var(--muted)}.small{font-size:.875rem}.faint{color:var(--faint)}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- huy hiệu ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:.8rem;font-weight:600;background:#f2f4f7;color:var(--ink-2);white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok-text)}
.badge.warn{background:var(--warn-soft);color:var(--warn-text)}
.badge.bad{background:var(--bad-soft);color:var(--bad-text)}
.badge.accent{background:var(--accent-soft);color:var(--accent-dark)}
.badge.info{background:var(--info-soft);color:var(--info-text)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--faint);flex:none}
.dot.ok{background:var(--ok);box-shadow:0 0 0 3px rgba(18,183,106,.18)}
.dot.bad{background:var(--bad);box-shadow:0 0 0 3px rgba(217,45,32,.18)}
.dot.warn{background:var(--warn)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-strong);background:#fff;color:var(--text);font-size:.9rem;font-weight:500;cursor:pointer}
.chip:hover{border-color:var(--accent);color:var(--accent-dark);background:#fff}

/* ---------- trang tra cứu: trạng thái trống ---------- */
.hero{max-width:720px;margin:40px auto 24px;text-align:center}
.hero-icon{display:inline-grid;place-items:center;width:72px;height:72px;border-radius:20px;background:var(--accent-soft);color:var(--accent);margin-bottom:16px}
.hero-icon svg{width:36px;height:36px}
.hero h1{font-size:1.6rem}
.hero p{color:var(--muted);margin:0 0 20px}
.recent{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center}
.tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;max-width:900px;margin:28px auto 0}
.tip{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:left}
.tip b{display:block;margin-bottom:4px}
.tip span{color:var(--muted);font-size:.9rem}

/* ---------- kết quả đơn ---------- */
.order-head{display:flex;gap:20px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
.order-code{font-size:1.6rem;font-weight:800;letter-spacing:.01em;word-break:break-all;margin:0 0 6px}
.order-sub{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.order-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(170px,100%),1fr));gap:12px;margin-top:16px}
.order-head>div{min-width:0}
.meta{background:#f9fafb;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 14px}
.meta dt{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--faint);margin-bottom:2px}
.meta dd{margin:0;font-weight:600;word-break:break-word}
.order-actions{display:flex;gap:8px;flex-wrap:wrap}
.order-list{display:grid;gap:10px}
.order-btn{display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:left;background:#fff;color:var(--text);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;box-shadow:var(--shadow);font-weight:500}
.order-btn:hover{background:#fff;border-color:var(--accent)}
.order-btn b{font-size:1.1rem}

/* ---------- lưới camera ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(420px,100%),1fr));gap:16px}
.grid.pair{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.single{grid-template-columns:minmax(0,1fr)}
.cam{min-width:0;margin:0;background:var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.cam figcaption{display:flex;align-items:center;gap:10px;color:#fff;padding:10px 14px;font-weight:600;background:var(--ink-2)}
.cam figcaption .cam-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cam figcaption .time{font-weight:500;color:#d0d5dd;font-size:.85rem;font-variant-numeric:tabular-nums}
.cam figcaption button{padding:5px 10px;font-size:.8rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15)}
.cam figcaption button:hover{background:rgba(255,255,255,.2)}
.cam .tag{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:2px 8px;border-radius:6px;background:var(--brand-2);color:#fff}
.cam .tag.alt{background:var(--red)}
.cam video{width:100%;display:block;aspect-ratio:16/9;max-height:76vh;background:#000}
.grid.single .cam video{aspect-ratio:auto}
.novideo{display:grid;place-items:center;gap:8px;color:#d0d5dd;padding:48px 16px;text-align:center;aspect-ratio:16/9;background:repeating-linear-gradient(45deg,#1d2939,#1d2939 12px,#202c3d 12px,#202c3d 24px)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}

/* ---------- xuất video / tra thủ công ---------- */
details.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px}
details.panel>summary{list-style:none;cursor:pointer;padding:16px 20px;font-weight:700;display:flex;align-items:center;gap:10px}
details.panel>summary::-webkit-details-marker{display:none}
details.panel>summary::after{content:"";margin-left:auto;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .2s}
details.panel[open]>summary::after{transform:rotate(-135deg)}
details.panel>summary .muted{font-weight:500}
details.panel .panel-body{padding:0 20px 20px}
.export{margin-top:4px}
.manual{margin-top:8px}

/* ---------- đăng nhập ---------- */
body.login{display:grid;place-items:center;min-height:100vh;padding:20px;background:radial-gradient(1100px 600px at 0% -10%,#dfe4ff 0,transparent 60%),radial-gradient(900px 500px at 110% 110%,#e8ecff 0,transparent 60%),var(--bg)}
.login-card{border-top:4px solid var(--brand)}
.login-card{width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow-lg);display:grid;gap:16px}
.login-card p{margin:-8px 0 4px}
.login-card .err{margin:0;padding:10px 12px;border-radius:var(--radius-sm);background:var(--bad-soft)}
.pw{position:relative;display:block}
.pw input{width:100%;padding-right:64px;font-size:1.05rem;padding-top:12px;padding-bottom:12px}
.pw-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:.85rem}

/* ---------- quản trị ---------- */
.admin-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;align-items:start}
.side{position:sticky;top:76px;display:grid;gap:2px}
.side a{padding:9px 12px;border-radius:9px;color:var(--muted);font-weight:600;font-size:.93rem}
.side a:hover{background:#fff;color:var(--text);text-decoration:none}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:16px}
.stat{background:#f9fafb;border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px}
.stat .k{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--faint)}
.stat .v{font-size:1.25rem;font-weight:700;margin-top:2px}
.stat .s{font-size:.82rem;color:var(--muted)}
.stat.bad{background:var(--bad-soft);border-color:#fecdca}.stat.bad .v{color:var(--bad-text)}
.stat.warn{background:var(--warn-soft);border-color:#fedf89}.stat.warn .v{color:var(--warn-text)}
.rec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.rec{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 12px;background:#fff}
.rec .dot{margin-top:7px}
.rec b{display:block}
.rec .s{font-size:.82rem;color:var(--muted);word-break:break-word}
.list-rows>div{padding:8px 0;border-bottom:1px solid var(--line)}
.list-rows>div:last-child{border-bottom:0}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-sm)}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th{text-align:left;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--faint);background:#f9fafb;padding:10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
td input,td select{width:100%;padding:8px 10px}
.save-bar{position:sticky;bottom:12px;z-index:10;display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:12px 16px;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg)}
pre.log{background:var(--ink);color:#d0d5dd;padding:14px;border-radius:var(--radius-sm);font-size:.8rem;white-space:pre-wrap;max-height:420px;overflow:auto;margin:0}

@media (max-width:900px){
  .admin-layout{grid-template-columns:1fr}
  .side{position:static;display:flex;overflow-x:auto;gap:4px;padding-bottom:4px}
  .side a{white-space:nowrap;background:#fff;border:1px solid var(--line)}
}
@media (max-width:760px){
  body{font-size:15px}
  main{padding:14px}
  html,body{overflow-x:hidden}
  .top{flex-wrap:wrap;padding:10px 14px;gap:10px}
  .top .brand span{display:none}
  .brand img{height:24px}
  .top-nav a{padding:6px 8px;font-size:.9rem}
  .search{order:3;flex:1 1 100%;max-width:none;min-width:0}
  .search-box{min-width:0}
  .search button[type=submit]{padding:0 16px}
  .grid,.grid.pair{grid-template-columns:minmax(0,1fr)}
  .cam figcaption{flex-wrap:wrap;row-gap:4px}
  .cam figcaption .time{order:5;flex-basis:100%}
  .order-head{display:block}
  .order-actions{margin-top:14px}
  .order-actions button{flex:1 1 auto}
  .order-meta{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .stats{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .hero{margin-top:16px}
  .order-code{font-size:1.3rem}
  .card,.order-card{padding:16px}
}