:root {
  --primary: #0b7a48;
  --primary-d: #095c37;
  --primary-soft: #e7f4ec;
  --gold: #d99a1e;
  --gold-d: #b57d13;
  --gold-soft: #fbf1da;
  --ink: #1e2b25;
  --ink-soft: #4b5a53;
  --muted: #82918a;
  --bg: #f4f6f4;
  --card: #ffffff;
  --line: #e5eae7;
  --line-soft: #eef2ef;
  --sidebar-bg: #10241c;
  --sidebar-2: #0b1a14;
  --sidebar-ink: #9db3a8;
  --sidebar-active: #1d3d2f;
  --ok: #15803d;
  --ok-bg: #e6f4ea;
  --bad: #c22a2a;
  --bad-bg: #fbeaea;
  --amber: #d99a1e;
  --amber-bg: #fbf1da;
  --violet: #6d4a9c;
  --shadow: 0 1px 3px rgba(16, 40, 28, .05), 0 8px 24px rgba(16, 40, 28, .05);
  --radius: 14px;
  --sidebar-w: 250px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--ink); line-height: 1.5; -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; }

/* ============ shell ============ */
.shell { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }
.scrim { display: none; }

.sidebar {
  background: linear-gradient(180deg, var(--sidebar-bg), var(--sidebar-2));
  color: var(--sidebar-ink); display: flex; flex-direction: column; padding: 18px 14px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.brand { display: flex; align-items: center; gap: 12px; padding: 6px 8px 16px; border-bottom: 1px solid rgba(255,255,255,.07); margin-bottom: 10px; }
.brand .logo {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  background: linear-gradient(150deg, var(--gold), var(--gold-d));
  display: grid; place-items: center; color: #1a1200; font-weight: 800; font-size: 1rem;
}
.brand b { display: block; font-size: .95rem; line-height: 1.25; color: #fff; }
.brand span { font-size: .76rem; color: var(--sidebar-ink); }

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-label { font-size: .68rem; font-weight: 700; letter-spacing: .09em; color: #5e7469; padding: 15px 10px 5px; text-transform: uppercase; }
.nav a {
  display: flex; align-items: center; gap: 11px; padding: 9px 11px; border-radius: 10px;
  color: var(--sidebar-ink); font-weight: 500; font-size: .9rem; transition: .13s;
}
.nav a .ic { width: 19px; height: 19px; flex-shrink: 0; opacity: .8; }
.nav a:hover { background: rgba(255, 255, 255, .06); color: #eafaf1; }
.nav a.active { background: var(--sidebar-active); color: #fff; font-weight: 600; }
.nav a.active .ic { opacity: 1; color: var(--gold); }
.nav a .dot { margin-left: auto; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); opacity: .5; }
.nav a.back-portal { color: var(--gold); font-weight: 600; font-size: .82rem; padding: 8px 11px; margin-bottom: 6px; }
.nav a.back-portal:hover { background: rgba(255, 255, 255, .06); }

.side-foot { margin-top: 12px; padding: 12px 12px; border-radius: 12px; background: rgba(255,255,255,.04); font-size: .78rem; }
.side-foot .t { color: #fff; font-weight: 700; font-size: 1rem; font-variant-numeric: tabular-nums; }
.side-foot .u { display: flex; align-items: center; gap: 9px; margin-top: 10px; padding-top: 10px; border-top: 1px solid rgba(255,255,255,.07); }
.side-foot .av { width: 28px; height: 28px; border-radius: 50%; background: var(--gold); color: #1a1200; display: grid; place-items: center; font-size: .74rem; font-weight: 800; }
.side-foot .u b { color: #fff; font-size: .82rem; font-weight: 600; }
.side-foot .u small { display: block; color: var(--sidebar-ink); font-weight: 400; }
.side-foot .foot-actions { display: flex; gap: 6px; margin-top: 10px; }
.side-foot .logout { flex: 1; text-align: center; background: transparent; border: 1px solid rgba(255,255,255,.14); color: var(--sidebar-ink); padding: 7px; border-radius: 9px; font-size: .78rem; cursor: pointer; text-decoration: none; }
.side-foot .logout:hover { background: rgba(255,255,255,.06); color: #fff; }

.main { min-width: 0; display: flex; flex-direction: column; }
.pagehead { padding: 26px 34px 6px; }
.crumb { font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.crumb a { color: var(--muted); }
.crumb b { color: var(--ink-soft); }
.pagehead h1 { font-size: 1.55rem; font-weight: 800; letter-spacing: -.01em; }
.pagehead .lead { color: var(--muted); font-size: .9rem; margin-top: 3px; }
.pagehead .hd-tools { float: right; display: flex; gap: 10px; align-items: center; }

.content { padding: 16px 34px 46px; flex: 1; }
.mobile-bar { display: none; }

/* ============ generic ============ */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.card + .card, .stack > * + * { margin-top: 16px; }
.section-title { font-size: 1rem; font-weight: 700; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: .85rem; }

.btn { font-weight: 600; cursor: pointer; font-size: .89rem; background: var(--primary); color: #fff; border: 1px solid var(--primary); padding: 9px 17px; border-radius: 10px; transition: .14s; }
.btn:hover { background: var(--primary-d); border-color: var(--primary-d); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--primary); }
.btn.ghost:hover { background: var(--primary-soft); }
.btn.gold { background: var(--gold); border-color: var(--gold); color: #1a1200; }
.btn.gold:hover { background: var(--gold-d); border-color: var(--gold-d); }
.btn.sm { padding: 6px 12px; font-size: .82rem; border-radius: 8px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.spread { justify-content: space-between; }

label.field { display: block; margin-bottom: 13px; font-size: .85rem; font-weight: 600; color: var(--ink-soft); }
label.field input, label.field select { width: 100%; font: inherit; margin-top: 5px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--ink); }
label.field input:focus, label.field select:focus { outline: 2px solid #bfe3cd; border-color: var(--primary); }
.err { color: var(--bad); font-size: .85rem; min-height: 1.2em; margin: 4px 0 8px; }

/* ============ login ============ */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: linear-gradient(160deg, #10241c, #0b1a14); }
.login-card { width: min(400px, 94vw); }
.login-card .brand { justify-content: center; border: 0; }
.login-card .brand b, .login-card .brand span { color: var(--ink); }
.login-card .brand span { color: var(--muted); }
.login-card h2 { text-align: center; font-size: 1.18rem; }
.login-card .hint { text-align: center; margin: 4px 0 18px; }

/* ============ portal home (module hub) ============ */
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.mod {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; cursor: pointer; transition: .15s; text-align: left; font: inherit; color: inherit; display: block; position: relative;
}
.mod:hover { transform: translateY(-2px); border-color: var(--primary); box-shadow: 0 10px 28px rgba(11,122,72,.12); }
.mod .mico { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; font-size: 1.3rem; margin-bottom: 13px; }
.mod h3 { font-size: 1.02rem; }
.mod p { font-size: .84rem; color: var(--muted); margin: 4px 0 0; }
.mod .mstat { margin-top: 12px; font-size: .82rem; font-weight: 600; color: var(--primary); }
.mod .soon { position: absolute; top: 14px; right: 14px; font-size: .68rem; font-weight: 700; color: var(--muted); background: var(--line-soft); padding: 3px 8px; border-radius: 99px; text-transform: uppercase; letter-spacing: .04em; }
.mod.locked { cursor: default; }
.mod.locked:hover { transform: none; border-color: var(--line); box-shadow: var(--shadow); }
.tone-green .mico { background: var(--primary-soft); color: var(--primary); }
.tone-gold .mico { background: var(--gold-soft); color: var(--gold-d); }
.tone-blue .mico { background: #e7eefb; color: #2f6bd8; }
.tone-violet .mico { background: #efe9f8; color: var(--violet); }
.tone-slate .mico { background: #eaeef0; color: #55606a; }
.tone-rose .mico { background: #fbe9ec; color: #c53a5a; }

.welcome { background: linear-gradient(120deg, #0b7a48, #0f6b3d 60%, #12603a); color: #fff; border-radius: var(--radius); padding: 26px 28px; margin-bottom: 20px; }
.welcome h2 { font-size: 1.3rem; }
.welcome p { opacity: .88; margin: 5px 0 0; font-size: .9rem; }
.welcome .qgo { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.welcome .qgo button { background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.24); color: #fff; padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: .85rem; cursor: pointer; }
.welcome .qgo button:hover { background: rgba(255,255,255,.24); }

/* ============ KPI ============ */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.kpi .top { display: flex; justify-content: space-between; align-items: flex-start; }
.kpi .ico { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; font-size: 1.1rem; }
.kpi .ico.green { background: var(--primary-soft); color: var(--primary); }
.kpi .ico.gold { background: var(--gold-soft); color: var(--gold-d); }
.kpi .ico.blue { background: #e7eefb; color: #2f6bd8; }
.kpi .ico.violet { background: #efe9f8; color: var(--violet); }
.kpi .top { min-height: 40px; }
.kpi .lbl { font-size: .82rem; color: var(--muted); font-weight: 600; margin-top: 14px; }
.kpi .val { font-size: 1.55rem; font-weight: 800; line-height: 1.15; margin: 2px 0; }
.kpi .hint { font-size: .78rem; margin-top: 2px; }
.kpi .chg { font-size: .8rem; font-weight: 700; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.two-col .card { margin-top: 0; min-width: 0; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.chg.up { color: var(--ok); } .chg.down { color: var(--bad); }

/* ============ plan / doanh thu ============ */
.filters { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 16px; display: grid; gap: 12px; grid-template-columns: repeat(5, 1fr); margin-bottom: 16px; }
.filters .fx { display: flex; flex-direction: column; gap: 5px; }
.filters .fx label { font-size: .72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.filters .fx select { font: inherit; font-size: .85rem; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fafbfa; color: var(--ink); }

.plan-row { display: grid; grid-template-columns: 3fr 1.15fr; gap: 15px; margin-top: 16px; }
.plan-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 17px; }
.plan .name { font-size: .88rem; font-weight: 700; color: var(--ink-soft); }
.plan .pct { font-size: 2rem; font-weight: 800; line-height: 1.1; margin: 4px 0 2px; }
.plan.p-a .pct { color: var(--primary); } .plan.p-b .pct { color: var(--gold-d); } .plan.p-c .pct { color: #2f6bd8; }
.plan .meta { font-size: .79rem; color: var(--muted); }
.bar { height: 8px; border-radius: 99px; background: var(--line-soft); overflow: hidden; margin: 11px 0 9px; }
.bar > i { display: block; height: 100%; border-radius: 99px; }
.plan.p-a .bar > i { background: var(--primary); } .plan.p-b .bar > i { background: var(--gold); } .plan.p-c .bar > i { background: #2f6bd8; }
.plan .need { font-size: .76rem; background: #fafbfa; border: 1px solid var(--line-soft); border-radius: 9px; padding: 8px 10px; color: var(--ink-soft); }
.plan .need b { color: var(--ink); }

.today-card { background: linear-gradient(160deg, #fff, #f3f8f4); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; display: flex; flex-direction: column; justify-content: center; text-align: center; }
.today-card .ico { width: 42px; height: 42px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; font-size: 1.2rem; margin: 0 auto 8px; }
.today-card .lbl { font-size: .84rem; color: var(--muted); font-weight: 600; }
.today-card .val { font-size: 1.65rem; font-weight: 800; margin: 4px 0 8px; }
.today-card .delta { font-size: .78rem; font-weight: 700; border-radius: 9px; padding: 6px 10px; display: inline-block; }
.today-card .delta.up { background: var(--ok-bg); color: var(--ok); }
.today-card .delta.down { background: var(--bad-bg); color: var(--bad); }

.chart { display: flex; align-items: flex-end; gap: 4px; height: 150px; padding-top: 8px; }
.chart .col { flex: 1; background: #d6e9dd; border-radius: 4px 4px 0 0; min-height: 3px; transition: .18s; }
.chart .col.hot { background: var(--primary); }
.chart .col:hover { background: var(--gold); }
.chart-x { display: flex; justify-content: space-between; font-size: .7rem; color: var(--muted); margin-top: 6px; }

/* ============ table ============ */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: .87rem; }
table.data th, table.data td { padding: 10px 12px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
table.data th { color: var(--primary-d); background: #f2f7f3; font-weight: 700; white-space: nowrap; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }
table.data tbody tr:hover { background: #fafbfa; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ============ luyện thi ============ */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 13px; }
.stat { background: #f2f7f3; border: 1px solid var(--line); border-radius: 12px; padding: 15px 16px; }
.stat b { display: block; font-size: 1.5rem; font-weight: 800; color: var(--primary-d); line-height: 1.15; }
.stat span { font-size: .79rem; color: var(--muted); }
.quick { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.quick button { text-align: left; padding: 15px; border-radius: 12px; border: 1px solid var(--line); background: #fff; cursor: pointer; font: inherit; transition: .14s; }
.quick button:hover { border-color: var(--primary); background: #f5faf6; transform: translateY(-1px); }
.quick button b { display: block; font-size: .93rem; margin-bottom: 3px; }
.quick button span { font-size: .8rem; color: var(--muted); }

.catbars { display: grid; gap: 9px; }
.catbar { display: grid; grid-template-columns: 150px 1fr 116px; gap: 12px; align-items: center; font-size: .85rem; }
.catbar .cn { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.catbar .ct { text-align: right; color: var(--muted); font-size: .8rem; }
.catbar .track { height: 9px; border-radius: 99px; background: var(--line-soft); overflow: hidden; display: flex; }
.catbar .track i.g { background: var(--ok); } .catbar .track i.r { background: var(--bad); }

.cat-list { display: grid; gap: 10px; }
.cat { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.cat:hover { border-color: var(--primary); }
.cat-main { flex: 1; min-width: 0; }
.cat .name { font-weight: 600; font-size: .9rem; margin-bottom: 3px; }
.cat-btns { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.cat-btns .btn { white-space: nowrap; }
.bar-split { display: flex; height: 6px; background: var(--line-soft); border-radius: 99px; margin-top: 8px; overflow: hidden; max-width: 340px; }
.bar-split i { display: block; height: 100%; }
.bar-split i.g { background: var(--ok); } .bar-split i.r { background: var(--bad); }

.quiz-layout { display: grid; grid-template-columns: 1fr 240px; gap: 20px; align-items: start; }
.quiz-main { min-width: 0; }
.quiz-aside { position: sticky; top: 18px; border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #fafbfa; }
.aside-head { text-align: center; font-weight: 700; padding-bottom: 10px; border-bottom: 1px solid var(--line); margin-bottom: 12px; font-size: .88rem; }
.quiz-title { text-align: center; font-size: 1.05rem; font-weight: 700; margin-bottom: 14px; }
.quizhead { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.pill { background: var(--primary-soft); color: var(--primary-d); border-radius: 99px; padding: 4px 12px; font-size: .8rem; font-weight: 700; }
.progressbar { height: 8px; background: var(--line-soft); border-radius: 99px; overflow: hidden; margin-bottom: 16px; }
.progressbar i { display: block; height: 100%; background: var(--primary); transition: width .25s; }
.qtype { background: #f2f7f3; border-radius: 9px; padding: 8px 12px; font-weight: 700; font-size: .87rem; margin-bottom: 12px; color: var(--ink-soft); }
.qstem { font-size: 1.04rem; font-weight: 600; margin: 6px 0 16px; white-space: pre-wrap; }
.opts { display: grid; gap: 10px; }
.opt { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; cursor: pointer; background: #fff; transition: .12s; }
.opt:hover { border-color: var(--primary); background: #f5faf6; }
.opt .k { font-weight: 800; color: var(--primary); flex-shrink: 0; width: 1.4em; }
.opt.sel { border-color: var(--primary); background: var(--primary-soft); }
.opt.correct { border-color: var(--ok); background: var(--ok-bg); }
.opt.correct .k { color: var(--ok); }
.opt.wrong { border-color: var(--bad); background: var(--bad-bg); }
.opt.wrong .k { color: var(--bad); }
.opt.disabled { cursor: default; }
.feedback { margin-top: 16px; border-radius: 12px; padding: 14px 16px; font-size: .92rem; }
.feedback.ok { background: var(--ok-bg); border: 1px solid #b3ddc0; }
.feedback.bad { background: var(--bad-bg); border: 1px solid #eebcbc; }
.feedback h4 { margin: 0 0 6px; font-size: .9rem; }
.exp-head { font-weight: 700; color: var(--primary-d); margin: 4px 0 6px; }
.exp { white-space: pre-wrap; color: #33413b; }
.quiznav { display: flex; justify-content: space-between; margin-top: 20px; gap: 10px; }
.palette { display: flex; flex-wrap: wrap; gap: 6px; }
.palette button { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--line); background: #fff; font: inherit; font-size: .8rem; cursor: pointer; font-weight: 700; }
.palette button.answered { background: var(--primary); color: #fff; border-color: var(--primary); }
.palette button.flagcur { outline: 2px solid var(--gold); }
.palette button.ok { background: var(--ok); color: #fff; border-color: var(--ok); }
.palette button.no { background: var(--bad); color: #fff; border-color: var(--bad); }
.timer { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--primary-d); }
.timer.warn { color: var(--bad); }
.result-hero { text-align: center; padding: 10px 0 4px; }
.result-hero .big { font-size: 2.5rem; font-weight: 800; color: var(--primary); }
.result-rows { display: grid; gap: 2px; margin-top: 14px; }
.result-rows .row { padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
.review-slot { margin-top: 12px; }
.ring { --p: 0; width: 126px; height: 126px; border-radius: 50%; margin: 6px auto 12px; background: conic-gradient(var(--primary) calc(var(--p) * 1%), var(--line-soft) 0); display: grid; place-items: center; }
.ring i { width: 98px; height: 98px; background: #fff; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 1.35rem; font-style: normal; }
.review-item { border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-top: 12px; }
.review-item.ok { border-left: 4px solid var(--ok); }
.review-item.no { border-left: 4px solid var(--bad); }

/* ============ admin ============ */
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.admin-grid .card { margin-top: 0; min-width: 0; }
.admin-grid input[type="file"] { display: block; width: 100%; padding: 10px; border: 1px dashed var(--line); border-radius: 10px; background: #fafbfa; }
.import-result { margin-top: 10px; font-size: .84rem; overflow-wrap: anywhere; }
.filter-grid { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 12px; align-items: end; }
.report-heading { margin: 20px 0 8px; color: var(--primary-d); font-size: .98rem; }

/* ============ misc ============ */
.empty { text-align: center; padding: 52px 20px; }
.empty .big-ic { font-size: 2.6rem; }
.empty h2 { margin: 12px 0 6px; }
.center { text-align: center; padding: 42px 0; color: var(--muted); }
.spin { width: 26px; height: 26px; border: 3px solid var(--line); border-top-color: var(--primary); border-radius: 50%; animation: sp 1s linear infinite; margin: 0 auto 10px; }
@keyframes sp { to { transform: rotate(360deg); } }
.toast-wrap { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 90; display: grid; gap: 8px; }
.toast { background: #1f2b25; color: #fff; padding: 10px 16px; border-radius: 10px; font-size: .9rem; box-shadow: var(--shadow); }
.toast.err { background: var(--bad); }

/* ============ responsive ============ */
@media (max-width: 1080px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .plan-row { grid-template-columns: 1fr; }
  .filters { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 80; width: var(--sidebar-w); transform: translateX(-100%); transition: transform .22s; }
  .shell.nav-open .sidebar { transform: translateX(0); }
  .scrim { position: fixed; inset: 0; background: rgba(15,23,20,.45); z-index: 70; }
  .shell.nav-open .scrim { display: block; }
  .mobile-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--sidebar-bg); color: #fff; position: sticky; top: 0; z-index: 40; }
  .mobile-bar b { font-size: .95rem; }
  .hamburger { width: 38px; height: 38px; border-radius: 10px; border: 1px solid rgba(255,255,255,.2); background: transparent; color: #fff; font-size: 1.1rem; cursor: pointer; }
  .pagehead, .content { padding-left: 16px; padding-right: 16px; }
  .pagehead .hd-tools { float: none; margin-top: 12px; }
  .quiz-layout { grid-template-columns: 1fr; }
  .quiz-aside { position: static; order: -1; }
  .admin-grid, .filter-grid { grid-template-columns: 1fr; }
  .catbar { grid-template-columns: 110px 1fr 92px; }
}
@media (max-width: 560px) {
  .kpi-grid, .plan-cards, .filters { grid-template-columns: 1fr; }
  .cat { flex-direction: column; align-items: stretch; }
  .cat-btns { flex-direction: row; }
}