:root{
  --bg:#f7f8fa; --surface:#ffffff; --surface-2:#f3f5f8; --text:#0f172a; --text-2:#475569; --muted:#8a94a6;
  --line:#eceff3; --accent:#2f5bea; --accent-2:#eef2ff; --accent-ink:#2341b8;
  --good:#0f9d6b; --good-bg:#e8f7f0; --warn:#c27a00; --warn-bg:#fff5e1; --bad:#d64545; --bad-bg:#fdeeee;
  --info-bg:#f0f4ff; --shadow:0 1px 2px rgba(15,23,42,.04),0 4px 16px rgba(15,23,42,.05);
  --shadow-lg:0 12px 40px rgba(15,23,42,.12); --r:16px; --r-sm:10px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 Inter,"Segoe UI",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{opacity:.45;cursor:not-allowed}
[hidden]{display:none!important}
code{font-family:ui-monospace,Consolas,monospace;font-size:12px;background:var(--surface-2);padding:2px 6px;border-radius:6px;overflow-wrap:anywhere}
a{color:var(--accent-ink)}
a.btn{text-decoration:none}
.muted{color:var(--muted)} .small{font-size:12px}
h1,h2,h3{margin:0;letter-spacing:-.01em}

/* Bố cục */
.shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
.sidebar{background:var(--surface);position:sticky;top:0;height:100vh;padding:22px 14px;display:flex;flex-direction:column;gap:22px;box-shadow:1px 0 0 var(--line)}
.brand{display:flex;gap:11px;align-items:center;padding:0 8px}
.brand b{display:block;font-size:15px;letter-spacing:.02em}
.brand small{display:block;color:var(--muted);font-size:11px}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#4c7dff,#2f5bea);color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;box-shadow:0 6px 16px rgba(47,91,234,.3)}
.nav{display:flex;flex-direction:column;gap:2px}
.nav button{display:flex;align-items:center;gap:12px;border:0;background:transparent;padding:10px 12px;border-radius:10px;color:var(--text-2);font-weight:500;text-align:left}
.nav button svg{width:18px;height:18px;flex-shrink:0;opacity:.8}
.nav button:hover{background:var(--surface-2);color:var(--text)}
.nav button.active{background:var(--accent-2);color:var(--accent-ink);font-weight:600}
.nav button.active svg{opacity:1}
.side-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 8px 0;border-top:1px solid var(--line)}
.who{font-size:12px;line-height:1.35}
.who b{display:block;font-size:13px}
.main{min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:26px 36px 18px;flex-wrap:wrap}
.topbar h1{font-size:24px;font-weight:700}
.topbar p{margin:4px 0 0;font-size:13px}
.top-actions{display:flex;align-items:center;gap:10px}
.view{padding:6px 36px 48px;max-width:1500px;width:100%}

/* Nút */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:9px 15px;font-weight:600;font-size:13px;background:var(--surface);color:var(--text);box-shadow:inset 0 0 0 1px var(--line);transition:background .15s,box-shadow .15s,transform .05s;white-space:nowrap}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(47,91,234,.25)}
.btn-primary:hover{background:#2850d6}
.btn-ghost{box-shadow:none;background:transparent;color:var(--text-2)}
.btn-danger{color:var(--bad);background:var(--bad-bg);box-shadow:none}
.btn-stop{background:var(--bad);color:#fff;box-shadow:0 4px 12px rgba(214,69,69,.28)}
.btn-stop:hover{background:#c13b3b}
.btn-sm{padding:6px 10px;font-size:12px;border-radius:8px}
.btn-lg{padding:12px 16px;font-size:14px;white-space:normal;text-align:left;justify-content:flex-start;min-height:52px}
.btn-lg.btn-block{justify-content:center}
.btn svg{width:17px;height:17px;flex-shrink:0}
.btn-block{width:100%}
.btn-icon{padding:8px;border-radius:9px}
.btn-icon svg{width:16px;height:16px}

/* Thẻ */
.card{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px}
.card-head h2{font-size:16px;font-weight:600}
.card-head p{margin:4px 0 0;color:var(--muted);font-size:12.5px}
.grid{display:grid;gap:18px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-main{grid-template-columns:minmax(0,380px) minmax(0,1fr)}
.stack{display:flex;flex-direction:column;gap:18px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.spacer{flex:1}

/* KPI */
.kpi{padding:20px 22px}
.kpi .label{font-size:12.5px;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:8px}
.kpi .value{font-size:30px;font-weight:700;letter-spacing:-.02em;margin-top:8px;line-height:1.1}
.kpi .value small{font-size:14px;color:var(--muted);font-weight:500}
.kpi .sub{font-size:12px;color:var(--muted);margin-top:6px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:var(--accent)}

/* Nhãn trạng thái */
.status-pill{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--good-bg);color:var(--good)}
.status-pill::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor}
.status-pill.paused{background:var(--warn-bg);color:var(--warn)}
.status-pill.stopped{background:var(--bad-bg);color:var(--bad)}
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--surface-2);color:var(--text-2);white-space:nowrap}
.badge.good{background:var(--good-bg);color:var(--good)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.badge.info{background:var(--accent-2);color:var(--accent-ink)}
.badge.na{background:#f1f2f5;color:#6b7385}

/* Biểu ngữ */
.banner{margin:0 36px 14px;padding:14px 18px;border-radius:14px;display:flex;align-items:center;gap:14px;font-size:13px}
.banner.stop{background:var(--bad-bg);color:#8f2525}
.banner.pause{background:var(--warn-bg);color:#7a4d00}
.banner b{font-weight:700}
.note{background:var(--info-bg);color:#33467e;border-radius:12px;padding:12px 14px;font-size:12.5px;line-height:1.55}

/* Trường nhập */
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field>span{font-size:12px;font-weight:600;color:var(--text-2)}
.field input,.field select,.field textarea,.input{width:100%;border:0;background:var(--surface-2);border-radius:10px;padding:10px 12px;outline:none;min-height:40px;box-shadow:inset 0 0 0 1px transparent;transition:box-shadow .15s,background .15s}
.field input:focus,.field select:focus,.field textarea:focus,.input:focus{background:#fff;box-shadow:inset 0 0 0 1.5px var(--accent),0 0 0 4px rgba(47,91,234,.1)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.form-error{color:var(--bad);font-size:12.5px;margin:0}
.search{position:relative}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted)}
.search input{padding-left:36px}

/* F0 */
.master{background:linear-gradient(160deg,#ffffff,#f4f7ff);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}
.master-tag{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--accent-ink);background:var(--accent-2);padding:5px 10px;border-radius:999px}
.device{margin:18px auto 16px;width:190px;aspect-ratio:9/16;border-radius:28px;padding:9px;background:#0f172a;box-shadow:0 20px 40px rgba(15,23,42,.18)}
.device.wide{width:100%;aspect-ratio:16/10;border-radius:16px}
.device.tablet{width:240px;aspect-ratio:3/4;border-radius:22px}
.screen{height:100%;border-radius:20px;background:linear-gradient(160deg,var(--c1),var(--c2));color:#fff;display:flex;flex-direction:column;justify-content:space-between;padding:16px;overflow:hidden;transition:background .3s}
.device.wide .screen{border-radius:10px}
.screen .emoji{font-size:34px}
.screen .title{font-weight:700;font-size:15px;line-height:1.3}
.screen .meta{font-size:11px;opacity:.85}
.master-name{font-size:18px;font-weight:700;text-align:center}
.master-sub{text-align:center;color:var(--muted);font-size:12.5px;margin-top:2px}
.controls{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:8px;margin-top:18px}
.chips{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:10px}

/* Lưới Fn */
.fn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.fn{position:relative;background:var(--surface);border-radius:14px;box-shadow:var(--shadow);padding:10px;cursor:grab;transition:transform .12s,box-shadow .12s;user-select:none}
.fn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,23,42,.1)}
.fn.dragging{opacity:.4}
.fn.drop{box-shadow:0 0 0 2px var(--accent),var(--shadow)}
.fn.picked{box-shadow:0 0 0 2px var(--accent),0 8px 24px rgba(47,91,234,.2)}
.fn.off{opacity:.45}
.fn-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:600;color:var(--text-2)}
.fn-slot{font-weight:700;color:var(--text)}
.fn-screen{margin:8px 0;height:92px;border-radius:10px;background:linear-gradient(160deg,var(--c1),var(--c2));color:#fff;padding:9px;display:flex;flex-direction:column;justify-content:space-between}
.fn-screen .t{font-size:11px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.fn-bottom{display:flex;justify-content:space-between;align-items:center;gap:6px;font-size:11px;color:var(--muted)}
.fn-actions{position:absolute;top:6px;right:6px;display:none;gap:4px}
.fn:hover .fn-actions{display:flex}
@media (hover:none){.fn-actions{display:flex;position:static;justify-content:flex-end;margin-top:6px}}
.fn-check{position:absolute;top:8px;left:8px;width:18px;height:18px;border-radius:6px;background:#fff;box-shadow:inset 0 0 0 1.5px #c8cfdb;display:grid;place-items:center}
.fn-check.on{background:var(--accent);box-shadow:none;color:#fff}
.pager{display:flex;align-items:center;gap:6px}

/* Bảng */
.table-wrap{overflow-x:auto;margin:0 -22px -22px;border-radius:0 0 var(--r) var(--r)}
table{width:100%;border-collapse:collapse;min-width:720px}
th{font-size:11.5px;font-weight:600;color:var(--muted);text-align:left;padding:11px 16px;background:#fafbfc;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid var(--line);font-size:13px;vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr.click{cursor:pointer}
tbody tr.click:hover td{background:#fafbff}
.acc{display:flex;align-items:center;gap:10px}
.avatar{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;font-size:15px;flex-shrink:0;background:linear-gradient(160deg,var(--c1,#6b8afd),var(--c2,#3b5bdb));color:#fff}
.acc b{display:block;font-size:13px}
.acc small{display:block;color:var(--muted);font-size:11.5px}

/* Thanh */
.bar{height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:99px;background:var(--accent)}
.bar>i.good{background:var(--good)} .bar>i.warn{background:#e6a23c} .bar>i.bad{background:var(--bad)}
.stackbar{display:flex;height:12px;border-radius:99px;overflow:hidden;background:var(--surface-2)}
.stackbar i{display:block;height:100%}
.legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:12px;font-size:12px;color:var(--text-2)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:9px;height:9px;border-radius:3px;display:inline-block}
.weight-row{display:grid;grid-template-columns:minmax(0,1fr) 52px;gap:12px;align-items:center;margin:12px 0}
.weight-row b{font-size:13px;font-weight:600}
.weight-row .r{text-align:right;font-weight:700}
.formula{font-family:ui-monospace,Consolas,monospace;font-size:12px;background:var(--surface-2);padding:12px 14px;border-radius:10px;color:var(--text-2);overflow-x:auto}
.score{font-size:20px;font-weight:700}
.sub-bars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;min-width:240px}
.sub-bars div{font-size:10.5px;color:var(--muted)}

/* Danh sách */
.list{display:flex;flex-direction:column}
.list-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}
.list-item:last-child{border-bottom:0}
.list-item .time{color:var(--muted);font-size:11.5px;min-width:64px;padding-top:2px;font-variant-numeric:tabular-nums}
.list-item .grow{flex:1;min-width:0}
.list-item .msg{color:var(--text-2);font-size:12.5px;margin-top:2px}
.empty{text-align:center;color:var(--muted);padding:28px 10px;font-size:13px}

/* Chủ đề */
.topic{background:var(--surface);border-radius:14px;box-shadow:var(--shadow);padding:16px;display:flex;flex-direction:column;gap:10px;cursor:pointer;transition:transform .12s}
.topic:hover{transform:translateY(-2px)}
.topic.active{box-shadow:0 0 0 2px var(--accent),var(--shadow)}
.topic-head{display:flex;align-items:center;gap:10px}
.topic-head .avatar{width:36px;height:36px;font-size:18px}
.topic-head b{font-size:14px}
.topic small{color:var(--muted);font-size:12px}
.niches{display:flex;flex-wrap:wrap;gap:5px}
.niches span{font-size:11px;background:var(--surface-2);color:var(--text-2);padding:3px 8px;border-radius:999px}

/* Công tắc */
.switch{position:relative;width:44px;height:26px;border-radius:99px;background:#d6dbe4;border:0;transition:background .2s;flex-shrink:0;padding:0}
.switch::after{content:'';position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .2s}
.switch.on{background:var(--accent)}
.switch.on::after{transform:translateX(18px)}
.daypick{display:flex;gap:5px;flex-wrap:wrap}
.daypick button{width:38px;height:36px;border-radius:9px;border:0;background:var(--surface-2);font-size:12px;font-weight:600;color:var(--text-2)}
.daypick button.on{background:var(--accent);color:#fff}
.tabs{display:inline-flex;background:var(--surface-2);border-radius:11px;padding:3px;gap:2px}
.tabs button{border:0;background:transparent;padding:7px 14px;border-radius:9px;font-size:12.5px;font-weight:600;color:var(--text-2)}
.tabs button.on{background:#fff;color:var(--text);box-shadow:0 1px 3px rgba(15,23,42,.1)}

/* Ngăn kéo / hộp thoại */
.drawer{position:fixed;inset:0;z-index:40;background:rgba(15,23,42,.25);display:flex;justify-content:flex-end}
.drawer-panel{width:min(460px,100%);height:100%;background:#fff;box-shadow:var(--shadow-lg);padding:26px;overflow-y:auto;animation:slide .2s ease}
@keyframes slide{from{transform:translateX(30px);opacity:0}}
.modal{position:fixed;inset:0;z-index:45;background:rgba(15,23,42,.3);display:grid;place-items:center;padding:16px}
.modal-panel{width:min(760px,100%);max-height:88vh;overflow:auto;background:#fff;border-radius:18px;box-shadow:var(--shadow-lg);padding:26px}
.toasts{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;flex-direction:column;gap:8px;max-width:min(420px,calc(100vw - 32px))}
.toast{background:#0f172a;color:#fff;padding:12px 16px;border-radius:12px;font-size:13px;box-shadow:var(--shadow-lg);animation:pop .2s ease}
.toast.bad{background:var(--bad)} .toast.good{background:#0b7f58}
@keyframes pop{from{transform:translateY(8px);opacity:0}}
pre.json{background:var(--surface-2);border-radius:10px;padding:14px;font-size:11.5px;overflow:auto;max-height:50vh}

/* Đăng nhập */
.login{min-height:100vh;display:grid;place-items:center;padding:16px;background:radial-gradient(1200px 600px at 20% -10%,#e9efff,transparent),var(--bg)}
.login-card{width:min(400px,100%);background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);padding:32px;display:flex;flex-direction:column;gap:14px}
.login-card h1{font-size:22px;margin-top:10px}
.login-card p{margin:0}
.brand-lg{padding:0}

/* Màn hình hẹp */
@media (max-width:1180px){.g-4{grid-template-columns:repeat(2,minmax(0,1fr))}.g-main{grid-template-columns:1fr}.g-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:820px){
  .shell{display:block}
  .sidebar{position:sticky;top:0;z-index:30;height:auto;flex-direction:row;align-items:center;padding:10px 12px;gap:10px;box-shadow:0 1px 0 var(--line)}
  .sidebar .brand div,.side-foot{display:none}
  .nav{flex-direction:row;overflow-x:auto;scrollbar-width:none}
  .nav button{white-space:nowrap;padding:8px 10px}
  .nav button span{display:none}
  .nav button.active span{display:inline}
  .topbar{padding:18px 16px 12px}
  .topbar h1{font-size:20px}
  .view{padding:4px 16px 40px}
  .banner{margin:0 16px 12px}
  .g-2,.g-3,.g-4,.form-grid{grid-template-columns:1fr}
  .kpi .value{font-size:24px}
  .fn-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card{padding:16px}
  .table-wrap{margin:0 -16px -16px}
  .device{width:150px;margin:14px auto 12px}
  .device.wide{width:100%}
  .device.tablet{width:180px}
  .controls .btn{padding:9px 8px;white-space:normal}
  .master{padding:16px}
}