/* Layout: sticky command bar + left rail of survey sheets (numbered as in the Excel template) + work surface. Dark-first SOC console, FPT orange as the single accent. */
:root{
  --bg:#0A1020; --bg2:#0D1528; --panel:#101A31; --panel2:#15223F; --line:#22335A; --line2:#2E4373;
  --ink:#E4EBF7; --muted:#8C9CBD; --faint:#5E6F93;
  --accent:#F37021; --accent-ink:#FF9152; --accent-soft:rgba(243,112,33,.14);
  --cyan:#45B8F2; --cyan-soft:rgba(69,184,242,.13);
  --ok:#35C47C; --ok-soft:rgba(53,196,124,.14); --warn:#E9B43C; --warn-soft:rgba(233,180,60,.14);
  --bad:#F06464; --bad-soft:rgba(240,100,100,.14);
  --grid:rgba(69,184,242,.045); --shadow:0 1px 0 rgba(255,255,255,.03) inset,0 8px 28px rgba(0,0,0,.35);
  --f-display:'Chakra Petch','Be Vietnam Pro',system-ui,sans-serif;
  --f-body:'Be Vietnam Pro',-apple-system,'Segoe UI',Roboto,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
  --r:10px;
  color-scheme:dark;
}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]){
  --bg:#F2F5FA; --bg2:#E9EEF6; --panel:#FFFFFF; --panel2:#EEF3FA; --line:#D3DCEA; --line2:#B9C6DC;
  --ink:#0E1A33; --muted:#51617F; --faint:#7D8BA6;
  --accent:#D85A0F; --accent-ink:#B84B0A; --accent-soft:rgba(216,90,15,.10);
  --cyan:#0B6FB0; --cyan-soft:rgba(11,111,176,.09);
  --ok:#17834B; --ok-soft:rgba(23,131,75,.10); --warn:#9A6B00; --warn-soft:rgba(154,107,0,.10);
  --bad:#C23636; --bad-soft:rgba(194,54,54,.09);
  --grid:rgba(11,111,176,.05); --shadow:0 1px 2px rgba(14,26,51,.06),0 6px 20px rgba(14,26,51,.06);
  color-scheme:light;
}}
:root[data-theme="light"]{
  --bg:#F2F5FA; --bg2:#E9EEF6; --panel:#FFFFFF; --panel2:#EEF3FA; --line:#D3DCEA; --line2:#B9C6DC;
  --ink:#0E1A33; --muted:#51617F; --faint:#7D8BA6;
  --accent:#D85A0F; --accent-ink:#B84B0A; --accent-soft:rgba(216,90,15,.10);
  --cyan:#0B6FB0; --cyan-soft:rgba(11,111,176,.09);
  --ok:#17834B; --ok-soft:rgba(23,131,75,.10); --warn:#9A6B00; --warn-soft:rgba(154,107,0,.10);
  --bad:#C23636; --bad-soft:rgba(194,54,54,.09);
  --grid:rgba(11,111,176,.05); --shadow:0 1px 2px rgba(14,26,51,.06),0 6px 20px rgba(14,26,51,.06);
  color-scheme:light;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:28px 28px;background-attachment:fixed}
h1,h2,h3{font-family:var(--f-display);line-height:1.2;margin:0;text-wrap:balance;letter-spacing:.005em}
h1{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:700}
h2{font-size:1.45rem;font-weight:700}
h3{font-size:1.05rem;font-weight:600}
p{margin:0}
a{color:var(--cyan)}
.mono{font-family:var(--f-mono)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- top bar ---------- */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-block:10px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));max-width:1440px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-img{height:37px;width:auto;display:block}
.logo-on-light{display:none}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]) .logo-on-dark{display:none}:root:not([data-theme="dark"]) .logo-on-light{display:block}}
:root[data-theme="light"] .logo-on-dark{display:none}:root[data-theme="light"] .logo-on-light{display:block}
.logo-txt{display:flex;flex-direction:column;line-height:1.2;padding-left:12px;border-left:1px solid var(--line2)}
.logo-txt span{font-size:.68rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-weight:600}
.top-mid{flex:1;min-width:0;display:flex;align-items:center;gap:10px}
.lvl-badge{font-family:var(--f-mono);font-size:.74rem;font-weight:600;letter-spacing:.06em;border-radius:6px;padding:4px 10px;border:1px solid;cursor:pointer;background:none}
.lvl-badge.l2{color:var(--cyan);border-color:var(--cyan);background:var(--cyan-soft)}
.lvl-badge.l3{color:var(--accent-ink);border-color:var(--accent);background:var(--accent-soft)}
.lvl-badge.l0{color:var(--muted);border-color:var(--line2)}
.saved{font-size:.76rem;color:var(--faint);white-space:nowrap}
.top-actions{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;font:inherit;font-size:.86rem;font-weight:600;border-radius:8px;padding:8px 14px;cursor:pointer;border:1px solid var(--line2);background:var(--panel);color:var(--ink);transition:border-color .15s,background .15s}
.btn:hover{border-color:var(--accent)}
.btn.pri{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.pri:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}
.btn.sm{padding:5px 10px;font-size:.78rem}
.btn.danger{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 45%,transparent)}
.btn svg{width:15px;height:15px;flex:none}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:268px minmax(0,1fr);gap:28px;max-width:1440px;margin:0 auto;padding-block:24px 80px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 76px);align-self:start;max-height:calc(100vh - 100px);overflow-y:auto;display:flex;flex-direction:column;gap:2px;padding-right:4px}
.rail-h{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);padding:10px 10px 6px}
.nav{display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:6px;width:100%;text-align:left;font:inherit;font-size:.86rem;color:var(--ink);background:none;border:1px solid transparent;border-radius:8px;padding:7px 9px;cursor:pointer}
.nav:hover{background:var(--panel2)}
.nav.on{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 40%,transparent)}
.nav .n{font-family:var(--f-mono);font-size:.7rem;color:var(--faint)}
.nav.on .n{color:var(--accent-ink)}
.nav .c{font-family:var(--f-mono);font-size:.68rem;color:var(--muted);border-radius:5px;padding:1px 6px;background:var(--panel2);white-space:nowrap}
.nav .c.full{color:var(--ok);background:var(--ok-soft)}
.nav[disabled]{opacity:.42;cursor:not-allowed}
.rail-note{margin-top:14px;padding:12px;border:1px dashed var(--line2);border-radius:8px;font-size:.76rem;color:var(--muted);line-height:1.5}

.main{min-width:0}
.sec-head{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.eyebrow{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink)}
.lede{color:var(--muted);max-width:70ch}
.cite{font-family:var(--f-mono);font-size:.7rem;font-weight:500;color:var(--cyan);background:var(--cyan-soft);border-radius:5px;padding:1px 7px;white-space:nowrap}
.cite.o{color:var(--accent-ink);background:var(--accent-soft)}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow)}
.stack{display:flex;flex-direction:column;gap:14px}
.callout{border:1px solid var(--line);border-left:3px solid var(--cyan);background:var(--panel);border-radius:8px;padding:12px 16px;font-size:.88rem;color:var(--muted)}
.callout b{color:var(--ink)}
.callout.warn{border-left-color:var(--warn);background:var(--warn-soft)}
.callout.bad{border-left-color:var(--bad);background:var(--bad-soft)}
.callout.ok{border-left-color:var(--ok);background:var(--ok-soft)}

/* ---------- level picker ---------- */
.hero{display:grid;gap:14px;margin-bottom:22px}
.hero h1 span{color:var(--accent)}
.facts{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.84rem;color:var(--muted)}
.facts span{display:inline-flex;align-items:center;gap:7px}
.facts i{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block}
.lvl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.lvl{position:relative;text-align:left;font:inherit;color:var(--ink);background:var(--panel);border:1.5px solid var(--line);border-radius:14px;padding:22px 22px 18px;cursor:pointer;display:flex;flex-direction:column;gap:12px;transition:border-color .15s,transform .15s}
.lvl:hover{transform:translateY(-2px)}
.lvl.l2:hover,.lvl.l2.sel{border-color:var(--cyan)}
.lvl.l3:hover,.lvl.l3.sel{border-color:var(--accent)}
.lvl.sel{box-shadow:0 0 0 3px var(--accent-soft)}
.lvl.l2.sel{box-shadow:0 0 0 3px var(--cyan-soft)}
.lvl-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.lvl-num{font-family:var(--f-display);font-weight:700;font-size:3.2rem;line-height:.9}
.lvl.l2 .lvl-num{color:var(--cyan)} .lvl.l3 .lvl-num{color:var(--accent)}
.lvl-name{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.lvl ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:.86rem}
.lvl li{padding-left:16px;position:relative;color:var(--ink)}
.lvl li::before{content:"";position:absolute;left:2px;top:.62em;width:6px;height:6px;border-radius:1px;transform:rotate(45deg)}
.lvl.l2 li::before{background:var(--cyan)} .lvl.l3 li::before{background:var(--accent)}
.lvl-foot{border-top:1px solid var(--line);padding-top:12px;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:.8rem}
.lvl-foot dt{color:var(--faint);font-family:var(--f-mono);font-size:.7rem;letter-spacing:.04em;padding-top:2px}
.lvl-foot dd{margin:0;color:var(--muted)}
.lvl-pick{align-self:flex-start;font-family:var(--f-mono);font-size:.74rem;font-weight:600;letter-spacing:.06em;padding:5px 12px;border-radius:6px;border:1px solid var(--line2);color:var(--muted)}
.lvl.sel .lvl-pick{color:#fff;border-color:transparent}
.lvl.l2.sel .lvl-pick{background:var(--cyan)} .lvl.l3.sel .lvl-pick{background:var(--accent)}
details.guide{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:0 18px}
details.guide summary{cursor:pointer;padding:14px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:10px}
details.guide summary::after{content:"+";font-family:var(--f-mono);color:var(--accent)}
details.guide[open] summary::after{content:"–"}
.guide ol{margin:0 0 16px;padding-left:20px;display:flex;flex-direction:column;gap:6px;font-size:.88rem;color:var(--muted)}
.guide ol b{color:var(--ink)}

/* ---------- fields ---------- */
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px 14px}
.f{display:flex;flex-direction:column;gap:5px;min-width:0}
.f.wide{grid-column:1/-1}
.f label,.f .lb{font-size:.78rem;font-weight:600;color:var(--muted)}
.f .hp{font-size:.74rem;color:var(--faint);line-height:1.45}
input[type=text],input[type=password],input[type=number],input[type=date],input[type=email],input[type=tel],select,textarea{width:100%;font:inherit;font-size:.9rem;color:var(--ink);background:var(--bg2);border:1px solid var(--line);border-radius:7px;padding:8px 10px;transition:border-color .15s}
textarea{min-height:64px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
::placeholder{color:var(--faint)}
.seg{display:flex;flex-wrap:wrap;gap:4px}
.seg button{font:inherit;font-size:.76rem;padding:4px 9px;border-radius:6px;border:1px solid var(--line);background:var(--bg2);color:var(--muted);cursor:pointer}
.seg button:hover{border-color:var(--line2);color:var(--ink)}
.seg button[aria-pressed="true"]{color:var(--ink);border-color:var(--cyan);background:var(--cyan-soft)}
.seg button[aria-pressed="true"][data-v="Có"],.seg button[aria-pressed="true"][data-v="Đã có"]{border-color:var(--ok);background:var(--ok-soft)}
.seg button[aria-pressed="true"][data-v="Không"],.seg button[aria-pressed="true"][data-v="Chưa có"]{border-color:var(--bad);background:var(--bad-soft)}
.seg button[aria-pressed="true"][data-v="Đang triển khai"],.seg button[aria-pressed="true"][data-v="Không rõ"]{border-color:var(--warn);background:var(--warn-soft)}
.seg button[aria-pressed="true"][data-v="Không áp dụng"]{border-color:var(--line2);background:var(--panel2)}
.ctrls{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px 16px;padding:12px 14px;border:1px dashed var(--line);border-radius:8px;background:color-mix(in srgb,var(--panel2) 50%,transparent)}
.ctrls .lb{font-size:.76rem;font-weight:600;color:var(--muted)}
.subh{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:6px 0 -4px;grid-column:1/-1}

/* ---------- question rows (TC / QL / KT) ---------- */
.q{display:grid;grid-template-columns:76px minmax(0,1fr);gap:4px 14px;padding:16px 0;border-top:1px solid var(--line)}
.q:first-child{border-top:0;padding-top:4px}
.q-id{font-family:var(--f-mono);font-size:.76rem;font-weight:600;color:var(--accent-ink);padding-top:2px}
.q-body{display:flex;flex-direction:column;gap:10px;min-width:0}
.q-t{font-weight:600;font-size:.95rem}
.q-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.q-hint{font-size:.8rem;color:var(--muted);border-left:2px solid var(--cyan);padding:2px 0 2px 10px}
.q-hint b{color:var(--ink);font-weight:600}
.q-more{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.q-more .f.wide{grid-column:1/-1}
.tag3{font-family:var(--f-mono);font-size:.64rem;font-weight:600;letter-spacing:.08em;color:#fff;background:var(--accent);border-radius:4px;padding:1px 6px}
.tagn{font-family:var(--f-mono);font-size:.64rem;font-weight:600;letter-spacing:.06em;color:var(--cyan);border:1px solid var(--cyan);border-radius:4px;padding:0 6px}
.grp-h{display:flex;align-items:center;gap:10px;margin:22px 0 4px;font-family:var(--f-display);font-weight:600;font-size:1.02rem}
.grp-h:first-child{margin-top:0}
.grp-h::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- row cards ---------- */
.rows{display:flex;flex-direction:column;gap:10px}
details.row{background:var(--panel);border:1px solid var(--line);border-radius:var(--r)}
details.row[open]{border-color:var(--line2)}
details.row>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;padding:12px 16px;flex-wrap:wrap}
details.row>summary::-webkit-details-marker{display:none}
.row-code{font-family:var(--f-mono);font-size:.78rem;font-weight:600;color:var(--accent-ink);min-width:52px}
.row-name{font-weight:600;flex:1;min-width:140px;overflow-wrap:anywhere}
.row-name.empty{color:var(--faint);font-weight:400;font-style:italic}
.row-sys{font-family:var(--f-mono);font-size:.7rem;color:var(--cyan);background:var(--cyan-soft);border-radius:5px;padding:1px 7px}
.row-acts{display:flex;gap:6px}
.chev{font-family:var(--f-mono);color:var(--faint);transition:transform .15s}
details.row[open] .chev{transform:rotate(90deg)}
.row-body{padding:4px 16px 18px;display:flex;flex-direction:column;gap:14px;border-top:1px dashed var(--line)}
.empty-state{border:1.5px dashed var(--line2);border-radius:var(--r);padding:28px 22px;text-align:center;color:var(--muted);display:flex;flex-direction:column;gap:12px;align-items:center}
.empty-state b{color:var(--ink)}
.sec-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.quick{display:flex;flex-wrap:wrap;gap:6px}
.quick button{font:inherit;font-size:.76rem;border:1px dashed var(--line2);background:none;color:var(--muted);border-radius:99px;padding:4px 11px;cursor:pointer}
.quick button:hover{color:var(--accent-ink);border-color:var(--accent)}

/* ---------- section footer nav ---------- */
.pager{display:flex;justify-content:space-between;gap:10px;margin-top:26px;flex-wrap:wrap}

/* ---------- review ---------- */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.tile{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px}
.tile .v{font-family:var(--f-display);font-size:1.7rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1}
.tile .k{font-size:.76rem;color:var(--muted)}
.tile.warn .v{color:var(--warn)}
.prog{display:grid;grid-template-columns:minmax(0,1fr) 120px 52px;gap:6px 12px;align-items:center;font-size:.86rem}
.bar{height:6px;border-radius:3px;background:var(--panel2);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:3px}
.bar i.full{background:var(--ok)}
.prog .pc{font-family:var(--f-mono);font-size:.74rem;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.flag{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--line);font-size:.88rem}
.flag:first-child{border-top:0}
.dot{width:9px;height:9px;border-radius:50%;flex:none;margin-top:.45em}
.dot.w{background:var(--warn)} .dot.b{background:var(--bad)} .dot.o{background:var(--ok)} .dot.i{background:var(--cyan)}
.export{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.ex{display:flex;flex-direction:column;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.ex p{font-size:.82rem;color:var(--muted);flex:1}
.ex.main-ex{border-color:var(--accent);background:linear-gradient(160deg,var(--accent-soft),var(--panel) 70%)}
.confirm{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:.82rem;color:var(--bad)}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(20px);background:var(--panel2);color:var(--ink);border:1px solid var(--line2);border-radius:9px;padding:10px 16px;font-size:.86rem;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50;max-width:calc(100vw - 32px)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.foot{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);font-size:.74rem;color:var(--faint);line-height:1.6}

@media (max-width:980px){
  .layout{grid-template-columns:1fr;gap:18px}
  .rail{position:static;max-height:none;flex-direction:row;overflow-x:auto;padding-bottom:6px}
  .rail-h,.rail-note{display:none}
  .nav{grid-template-columns:auto auto;white-space:nowrap;width:auto;flex:none}
  .nav .c{display:none}
  .lvl-grid{grid-template-columns:1fr}
}
@media (max-width:620px){
  .top-mid .saved{display:none}
  .q{grid-template-columns:1fr}
  .prog{grid-template-columns:minmax(0,1fr) 70px 44px}
  .logo-txt span{display:none}
}

/* utilities (replace inline styles so CSP can forbid them) */
.mb{margin-bottom:14px}.mb-s{margin-bottom:6px}.mt{margin-top:12px}.mt-s{margin-top:8px}
.lbl-strong{font-weight:600;font-size:.86rem}
.lvl-badge.static{cursor:default}

/* utilities (replace inline styles so CSP can forbid them) */
.mb{margin-bottom:14px}.mb-s{margin-bottom:6px}.mt{margin-top:12px}.mt-s{margin-top:8px}
.lbl-strong{font-weight:600;font-size:.86rem}
.lvl-badge.static{cursor:default}

/* ---------- login ---------- */
.login-page{min-height:100vh}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding-block:32px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.login-card{width:100%;max-width:440px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.login-title{font-size:1.45rem}
.login-form{display:flex;flex-direction:column;gap:14px}
.login-btn{justify-content:center;padding:10px 14px;font-size:.95rem}
.login-note{font-size:.76rem;color:var(--faint)}
.logout{display:inline-flex;margin:0}