/* eNotary — Tài liệu tích hợp API · giao diện sáng, màu thương hiệu #1d5fa8 */
:root{
  --brand:#1d5fa8; --brand-600:#174e8c; --brand-700:#123f72; --brand-100:#dbeaf8; --brand-50:#eef5fc;
  --ink:#0f1f33; --text:#324258; --muted:#66758a; --line:#e2e8f0; --line-2:#edf1f6;
  --bg:#f5f8fc; --surface:#fff;
  --get:#0e9f6e; --post:#1d5fa8;
  --ok:#0e9f6e; --ok-bg:#ecfdf5; --warn:#b45309; --warn-bg:#fffbeb; --err:#b91c1c; --err-bg:#fef2f2;
  --code-bg:#0f1b2d; --code-ink:#dbe6f5; --code-line:#223452;
  --header-h:64px; --side-w:288px; --radius:12px;
  --shadow:0 1px 2px rgba(15,31,51,.05),0 4px 14px rgba(15,31,51,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);font-size:15.5px;line-height:1.7;overflow-x:hidden}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;margin:0}
p{margin:.6em 0}
ul,ol{padding-left:1.3em;margin:.6em 0}
li{margin:.25em 0}
code,pre,kbd{font-family:var(--mono)}
:not(pre)>code{background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);padding:.05em .38em;border-radius:6px;font-size:.86em;overflow-wrap:anywhere}
.muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ───────── Header ───────── */
.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(15,31,51,.02)}
.header-inner{height:100%;max-width:1400px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);min-width:0}
.brand:hover{text-decoration:none}
.brand img{flex:0 0 auto}
.brand img.logo-vts{height:28px;width:auto}
.brand img.logo-eno{height:30px;width:auto}
.brand .sep{width:1px;height:26px;background:var(--line)}
.brand .title{font-weight:700;font-size:15px;white-space:nowrap;color:var(--ink)}
.brand .title span{color:var(--muted);font-weight:500}
.main-nav{display:flex;gap:2px;margin-left:auto}
.main-nav a{color:var(--text);font-size:14px;font-weight:500;padding:7px 12px;border-radius:8px}
.main-nav a:hover{background:var(--brand-50);color:var(--brand);text-decoration:none}
.env-switch{display:inline-flex;background:var(--line-2);border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px;flex:0 0 auto}
.env-switch button{border:0;background:transparent;font:inherit;font-size:12.5px;font-weight:600;color:var(--muted);padding:4px 12px;border-radius:999px;cursor:pointer;display:flex;align-items:center;gap:6px}
.env-switch button .dot{width:7px;height:7px;border-radius:50%;background:#94a3b8}
.env-switch button[aria-pressed="true"]{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(15,31,51,.14)}
.env-switch button[data-env="dev"][aria-pressed="true"] .dot{background:var(--get)}
.env-switch button[data-env="prod"][aria-pressed="true"] .dot{background:#d97706}
.env-switch .short{display:none}
.menu-btn{display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex:0 0 auto}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";position:relative}
.menu-btn span::before{position:absolute;top:-6px}
.menu-btn span::after{position:absolute;top:6px}

/* ───────── Layout ───────── */
.layout{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:var(--side-w) minmax(0,1fr)}
.sidebar{position:sticky;top:var(--header-h);height:calc(100vh - var(--header-h));overflow-y:auto;padding:22px 14px 40px 20px;border-right:1px solid var(--line);background:var(--surface);scrollbar-width:thin;overscroll-behavior:contain}
.toc-label{font-size:11.5px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);margin:0 8px 8px}
.toc a{display:block;color:var(--text);font-size:14px;padding:6px 10px;border-radius:8px;line-height:1.4;border-left:2px solid transparent}
.toc a:hover{background:var(--brand-50);text-decoration:none;color:var(--brand)}
.toc .toc-group>a{font-weight:600;color:var(--ink)}
.toc .toc-sub{display:none;margin:2px 0 6px 12px;border-left:1px solid var(--line)}
.toc .toc-group.open .toc-sub{display:block}
.toc .toc-sub a{font-size:13.5px;color:var(--muted);padding:4px 10px;border-radius:0 8px 8px 0;margin-left:-1px}
.toc a.active{color:var(--brand);background:var(--brand-50);border-left-color:var(--brand);font-weight:600}
.scrim{display:none}
.content{min-width:0}
.content-inner{max-width:988px;margin:0 auto;padding:0 44px 80px}

/* ───────── Hero ───────── */
.hero{background:linear-gradient(180deg,#eaf2fb 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero-inner{max-width:988px;margin:0 auto;padding:52px 44px 40px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--brand);background:#fff;border:1px solid var(--brand-100);padding:4px 12px;border-radius:999px}
.hero h1{font-size:40px;letter-spacing:-.02em;margin:16px 0 12px}
.hero .lead{font-size:18px;color:var(--text);max-width:680px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 30px}
.btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:600;font-size:15px;padding:11px 20px;border-radius:10px;border:1px solid transparent;cursor:pointer;text-decoration:none!important}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(29,95,168,.28)}
.btn-primary:hover{background:var(--brand-600)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-100)}
.btn-ghost:hover{background:var(--brand-50)}
.env-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.env-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);min-width:0}
.env-card .env-name{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.env-card .env-name span{display:inline-flex;align-items:center;gap:8px}
.env-card .env-name i{width:8px;height:8px;border-radius:50%;background:var(--get);display:inline-block}
.env-card.prod .env-name i{background:#d97706}
.env-row{display:flex;align-items:center;gap:8px;margin-top:8px}
.env-row code{flex:1;min-width:0;background:var(--line-2)!important;border:1px solid var(--line)!important;color:var(--ink)!important;padding:7px 10px!important;border-radius:8px!important;font-size:12px!important;white-space:nowrap;overflow-x:auto;line-height:1.45}
.copy-btn{flex:0 0 auto;font:inherit;font-size:12.5px;font-weight:600;border:1px solid var(--line);background:#fff;color:var(--text);padding:6px 11px;border-radius:8px;cursor:pointer}
.copy-btn:hover{border-color:var(--brand);color:var(--brand)}
.copy-btn.done{background:var(--ok-bg);border-color:#a7f3d0;color:var(--ok)}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.hero-meta b{color:var(--ink)}

/* ───────── Typography in content ───────── */
.content h2{font-size:28px;letter-spacing:-.015em;margin:64px 0 6px;padding-top:28px;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 14px)}
.content h2:first-child{margin-top:40px;border-top:0}
.sec-num{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:34px;padding:0 8px;margin-right:10px;border-radius:9px;background:var(--brand);color:#fff;font-size:16px;font-weight:700;vertical-align:3px}
.content h3{font-size:21px;margin:42px 0 8px;scroll-margin-top:calc(var(--header-h) + 14px)}
.content h4{font-size:15px;margin:24px 0 6px;color:var(--ink);text-transform:none}
.h-anchor{opacity:0;margin-left:8px;font-weight:500;color:var(--muted);font-size:.8em}
h2:hover .h-anchor,h3:hover .h-anchor{opacity:1}
.sec-lead{font-size:16.5px;color:var(--muted);margin:4px 0 14px}

/* ───────── Cards / callouts ───────── */
.grid{display:grid;gap:14px;margin:16px 0}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);min-width:0}
.card h4{margin:0 0 4px}
.card p{margin:.3em 0;font-size:14.5px}
.card .ico{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;background:var(--brand-50);color:var(--brand);border-radius:9px;font-weight:700;margin-bottom:8px}
.callout{border:1px solid var(--brand-100);border-left:4px solid var(--brand);background:var(--brand-50);border-radius:10px;padding:12px 16px;margin:16px 0;font-size:14.8px}
.callout>*:first-child{margin-top:0}.callout>*:last-child{margin-bottom:0}
.callout .c-title{display:block;font-weight:700;color:var(--ink);margin-bottom:2px}
.callout.warn{border-color:#fde68a;border-left-color:#d97706;background:var(--warn-bg)}
.callout.danger{border-color:#fecaca;border-left-color:#dc2626;background:var(--err-bg)}
.callout.ok{border-color:#a7f3d0;border-left-color:var(--ok);background:var(--ok-bg)}

/* ───────── Steps ───────── */
ol.steps{list-style:none;padding:0;counter-reset:s;margin:18px 0}
ol.steps>li{counter-increment:s;position:relative;padding:0 0 18px 50px;margin:0}
ol.steps>li::before{content:counter(s);position:absolute;left:0;top:0;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
ol.steps>li:not(:last-child)::after{content:"";position:absolute;left:16px;top:38px;bottom:4px;width:2px;background:var(--brand-100)}
ol.steps>li>strong:first-child{color:var(--ink);font-size:16px;display:block;margin-bottom:2px}

/* ───────── Tables ───────── */
.tbl-wrap{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:var(--radius);background:#fff;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
th,td{text-align:left;vertical-align:top;padding:10px 14px;border-bottom:1px solid var(--line-2)}
th{background:#f8fafd;color:var(--muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
tr:last-child td{border-bottom:0}
td:first-child{white-space:nowrap}
td:first-child code{white-space:nowrap;overflow-wrap:normal}
th code{background:none!important;border:0!important;padding:0!important;color:inherit!important;font-size:inherit!important;text-transform:none;letter-spacing:0}
tr.group td{background:#f8fafd;font-weight:700;color:var(--ink);font-size:13px}
.req,.opt{display:inline-block;font-size:11.5px;font-weight:700;padding:1px 8px;border-radius:999px;white-space:nowrap}
.req{background:#fee2e2;color:#b91c1c}
.opt{background:var(--line-2);color:var(--muted)}
.chip{display:inline-block;font-size:12px;font-weight:700;padding:1px 9px;border-radius:999px;white-space:nowrap}
.chip.g{background:var(--ok-bg);color:#047857}.chip.b{background:var(--brand-100);color:var(--brand-700)}
.chip.y{background:#fef3c7;color:#92400e}.chip.r{background:#fee2e2;color:#991b1b}.chip.n{background:var(--line-2);color:var(--muted)}

table.mini{min-width:0;width:auto;font-size:13px;margin:4px 0;border:1px solid var(--line)}
table.mini th,table.mini td{padding:4px 10px;white-space:normal}
.tbl-wrap td blockquote{margin:0;padding:2px 12px;border-left:3px solid var(--brand-100);color:var(--muted)}
.tbl-wrap td ul,.tbl-wrap td ol{margin:0;padding-left:1.2em}

/* ───────── Endpoint ───────── */
.endpoint{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin:14px 0 8px;overflow:hidden}
.ep-head{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#f8fafd;border-bottom:1px solid var(--line);min-width:0;flex-wrap:wrap}
.method{font-size:12px;font-weight:800;letter-spacing:.05em;color:#fff;padding:4px 11px;border-radius:7px;flex:0 0 auto}
.method.get{background:var(--get)}.method.post{background:var(--post)}
.ep-path{font-size:14.5px;font-weight:600;color:var(--ink);background:none!important;border:0!important;padding:0!important;overflow-wrap:anywhere;flex:1;min-width:0}
.ep-body{padding:4px 20px 18px}
.ep-body>p:first-child{margin-top:14px}
.ep-body h4:first-of-type{margin-top:16px}

/* ───────── Code ───────── */
.codeblock{margin:12px 0;border-radius:12px;overflow:hidden;background:var(--code-bg);border:1px solid var(--code-line);max-width:100%}
.cb-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 8px 7px 14px;background:#132238;border-bottom:1px solid var(--code-line)}
.cb-lang{font-size:11.5px;font-weight:700;color:#8fa6c4;text-transform:uppercase;letter-spacing:.08em}
.cb-head .copy-btn{background:transparent;border-color:#2c4468;color:#bcd0ea;padding:3px 10px;font-size:12px}
.cb-head .copy-btn:hover{background:#1c2f4b;color:#fff;border-color:#47658f}
.cb-head .copy-btn.done{background:#0f3d2e;border-color:#1f7a57;color:#7ee2b8}
.codeblock pre{margin:0;padding:14px 16px;overflow-x:auto;color:var(--code-ink);font-size:13px;line-height:1.6;tab-size:2}
.codeblock pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit;white-space:pre}
.tk-k{color:#8ec5ff}.tk-s{color:#9be9a8}.tk-n{color:#ffb86b}.tk-b{color:#d6a2ff}.tk-c{color:#7f93ad;font-style:italic}.tk-f{color:#ffd479}.tk-o{color:#ff9cac}
.res-label{display:flex;align-items:center;gap:8px;margin:18px 0 -4px;font-weight:700;color:var(--ink);font-size:14.5px}
.http{font-family:var(--mono);font-size:12px;font-weight:700;padding:2px 8px;border-radius:6px}
.http.s2{background:var(--ok-bg);color:#047857}.http.s4{background:#fef3c7;color:#92400e}.http.s5{background:#fee2e2;color:#991b1b}

/* ───────── Tabs, details ───────── */
.tabs{margin:14px 0}
.tab-list{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:-4px}
.tab-list button{font:inherit;font-size:13.5px;font-weight:600;border:1px solid var(--line);background:#fff;color:var(--muted);padding:6px 14px;border-radius:9px;cursor:pointer}
.tab-list button[aria-selected="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.tab-panel[hidden]{display:none}
details.event{border:1px solid var(--line);border-radius:12px;background:#fff;margin:10px 0;box-shadow:var(--shadow)}
details.event>summary{cursor:pointer;padding:12px 16px;font-weight:600;color:var(--ink);list-style:none;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
details.event>summary::-webkit-details-marker{display:none}
details.event>summary::before{content:"▸";color:var(--brand);transition:transform .15s}
details.event[open]>summary::before{transform:rotate(90deg)}
details.event>summary .desc{font-weight:400;color:var(--muted);font-size:14px}
details.event>.ev-body{padding:0 16px 14px}

/* ───────── Diagrams ───────── */
figure.diagram{margin:18px 0;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 10px 10px;box-shadow:var(--shadow);overflow-x:auto}
figure.diagram svg{display:block;width:100%;height:auto;min-width:680px;font-family:var(--font)}
figure.diagram figcaption{font-size:13px;color:var(--muted);text-align:center;margin:8px 8px 2px;min-width:0}
.d-box{fill:#fff;stroke:#c3d3e6;stroke-width:1.5}
.d-brand{fill:#eef5fc;stroke:#8fb6e0;stroke-width:1.5}
.d-ok{fill:#ecfdf5;stroke:#6ee7b7;stroke-width:1.5}
.d-warn{fill:#fffbeb;stroke:#fcd34d;stroke-width:1.5}
.d-err{fill:#fef2f2;stroke:#fca5a5;stroke-width:1.5}
.d-lane{fill:#f8fafd;stroke:#e2e8f0;stroke-width:1}
.d-t,.d-m,.d-mono{paint-order:stroke;stroke:#fff;stroke-width:4px;stroke-linejoin:round}
.d-h{font-size:14px;font-weight:700;fill:#0f1f33}
.d-t{font-size:12.5px;fill:#475569}
.d-m{font-size:12px;fill:#66758a}
.d-mono{font-family:var(--mono);font-size:11.5px;fill:#174e8c}
.d-line{stroke:#7a8ca3;stroke-width:1.8;fill:none}
.d-line-b{stroke:#1d5fa8;stroke-width:2;fill:none}
.d-line-o{stroke:#d97706;stroke-width:2;fill:none}
.d-line-r{stroke:#dc2626;stroke-width:1.8;fill:none}
.d-dash{stroke-dasharray:6 5}
.d-life{stroke:#c3d3e6;stroke-width:1.5;stroke-dasharray:4 5}

/* ───────── Footer ───────── */
.site-footer{background:#0f2744;color:#c6d6ea;margin-top:20px}
.footer-inner{max-width:1400px;margin:0 auto;padding:40px 24px 28px;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}
.footer-logos{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.footer-logos img.logo-eno{height:34px;width:auto}
.footer-logos .vts-chip{background:#fff;border-radius:10px;padding:6px 10px;display:inline-flex}
.footer-logos .vts-chip img{height:28px;width:auto;display:block}
.site-footer h4{color:#fff;font-size:14px;margin:0 0 10px;letter-spacing:.04em}
.site-footer p,.site-footer li{font-size:14px;color:#c6d6ea;margin:.3em 0}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer a{color:#9ec5f2}
.footer-bottom{border-top:1px solid #1f3d63;max-width:1400px;margin:0 auto;padding:14px 24px 22px;display:flex;justify-content:space-between;gap:10px 24px;flex-wrap:wrap;font-size:13px;color:#8fa9c8}

/* ───────── Responsive ───────── */
@media (max-width:1180px){.main-nav{display:none}.env-switch{margin-left:auto}.content-inner,.hero-inner{padding-left:28px;padding-right:28px}}
@media (max-width:960px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .menu-btn{display:flex;margin-left:0}
  .sidebar{position:fixed;z-index:60;top:var(--header-h);left:0;bottom:0;height:auto;width:min(86vw,320px);transform:translateX(-102%);transition:transform .22s ease;box-shadow:12px 0 32px rgba(15,31,51,.18)}
  body.nav-open .sidebar{transform:none}
  body.nav-open .scrim{display:block;position:fixed;z-index:55;inset:var(--header-h) 0 0 0;background:rgba(15,31,51,.4)}
  body.nav-open{overflow:hidden}
  .hero-inner{padding-top:40px;padding-bottom:34px}
  .hero h1{font-size:34px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:15px}
  .brand .title{display:none}
  .brand .sep{display:none}
  .header-inner{padding:0 14px;gap:10px}
  .content-inner,.hero-inner{padding-left:16px;padding-right:16px}
  .content-inner{padding-bottom:56px}
  .content h2{font-size:23px;margin-top:48px}
  .content h3{font-size:19px}
  .sec-num{min-width:30px;height:30px;font-size:14px}
  .grid-2,.grid-3,.env-cards{grid-template-columns:minmax(0,1fr)}
  .hero h1{font-size:28px}
  .hero .lead{font-size:16px}
  .ep-body{padding:2px 14px 14px}
  .footer-inner{grid-template-columns:1fr;padding:30px 18px 20px}
  .footer-bottom{padding:12px 18px 20px}
  .env-switch button{padding:4px 9px;font-size:12px}
  .env-switch .long{display:none}.env-switch .short{display:inline}
  .ep-head{gap:8px 10px}
  .ep-path{flex:1 1 100%;order:3;font-size:13.5px}
  .ep-head .copy-btn{margin-left:auto}
}
@media (max-width:400px){
  .brand img.logo-vts{height:24px;width:auto}.brand img.logo-eno{height:25px}.brand{gap:8px}
  .env-switch button{padding:4px 8px}
  .hero-actions .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.sidebar{transition:none}}
@media print{.site-header,.sidebar,.copy-btn{display:none!important}.layout{display:block}}
[data-env-only][hidden]{display:none!important}
/* Sandbox: các bước test bằng giao diện web */
.sb-steps{display:grid;gap:18px;margin:14px 0}
.sb-step{margin:0;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.sb-step figcaption{font-size:14.5px;margin:0 0 10px}
.sb-step figcaption b:first-child{color:var(--brand);margin-right:4px}
.sb-step img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:10px}
.sb-step img.narrow{max-width:560px;margin:0 auto}