/* mewGW docs v2 — Navy/Slate, Thai-primary. Font sizes are v2 (+1 over
   the mockup, per PLAN §8; never below 12px). Hand-written, no heavy CDN. */
:root {
  --navy: #1e293b;
  --navy-2: #294878;
  --navy-3: #0f172a;
  --accent: #3b6fd4;
  --accent-soft: #e8effb;
  --ink: #1f2937;
  --ink-soft: #475569;
  --line: #e2e8f0;
  --bg: #f7f9fc;
  --card: #ffffff;
  --sidebar-w: 288px;
  --header-h: 60px;

  --fs-body: 15.5px;
  --fs-sub: 13px;      /* submenu links */
  --fs-menuhead: 13.5px;
  --fs-table: 14px;
  --fs-cardlabel: 13px;
  --fs-caption: 12px;
  --fs-h1: 23px;
  --fs-h2: 19px;
  --fs-h3: 16.5px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Noto Sans Thai", Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}
:lang(en) { }
[hidden] { display: none !important; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header ---------- */
.hdr {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 18px; z-index: 40;
  background: linear-gradient(100deg, var(--navy), var(--navy-2));
  color: #fff;
}
.hdr .burger {
  display: none; background: rgba(255,255,255,.12); border: 0; color: #fff;
  width: 38px; height: 38px; border-radius: 9px; font-size: 18px; cursor: pointer;
}
.hdr .brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.hdr .logo {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: #fff; color: var(--navy-2); font-weight: 900; font-size: 18px;
}
.hdr .brand .sub { font-weight: 500; opacity: .8; font-size: var(--fs-caption); }
.hdr .spacer { flex: 1; }
.lang-toggle { display: inline-flex; background: rgba(255,255,255,.12); border-radius: 9px; padding: 3px; }
.lang-toggle button {
  border: 0; background: transparent; color: #fff; opacity: .7;
  font-size: var(--fs-sub); font-weight: 600; padding: 5px 12px; border-radius: 7px; cursor: pointer;
}
.lang-toggle button.on { background: #fff; color: var(--navy-2); opacity: 1; }

/* ---------- Sidebar ---------- */
.side {
  position: fixed; top: var(--header-h); bottom: 0; left: 0; width: var(--sidebar-w);
  background: var(--card); border-right: 1px solid var(--line);
  overflow-y: auto; padding: 14px 12px 40px; z-index: 30;
}
.side .search { position: relative; margin-bottom: 12px; }
.side .search input {
  width: 100%; padding: 9px 12px 9px 34px; border: 1px solid var(--line);
  border-radius: 9px; font-size: var(--fs-sub); font-family: inherit; background: #fff;
}
.side .search input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.side .search svg { position: absolute; left: 10px; top: 9px; opacity: .45; }

.nav-group { margin-bottom: 4px; }
.nav-group > .g-head {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  background: none; border: 0; cursor: pointer; padding: 9px 10px; border-radius: 8px;
  font-family: inherit; font-size: var(--fs-menuhead); font-weight: 800; color: var(--navy-3);
  text-transform: uppercase; letter-spacing: .3px;
}
.nav-group > .g-head:hover { background: #f1f5f9; }
.nav-group > .g-head .chev { transition: transform .15s; opacity: .5; }
.nav-group.collapsed > .g-head .chev { transform: rotate(-90deg); }
.nav-group.collapsed > .g-items { display: none; }
.g-items { padding: 2px 0 6px; }
.g-items a {
  display: block; padding: 7px 12px 7px 22px; border-radius: 8px;
  color: var(--ink-soft); font-size: var(--fs-sub); line-height: 1.45;
}
.g-items a:hover { background: #f1f5f9; color: var(--ink); text-decoration: none; }
.g-items a.active { background: var(--accent-soft); color: var(--navy-2); font-weight: 700; }
.g-items a.soon { opacity: .5; }
.g-items a.soon::after { content: " ·"; }
.nav-empty { padding: 10px; color: var(--ink-soft); font-size: var(--fs-sub); }

/* ---------- Main ---------- */
.main { margin-left: var(--sidebar-w); padding: calc(var(--header-h) + 26px) 32px 80px; }
.wrap { max-width: 820px; margin: 0 auto; }
.crumb { color: var(--ink-soft); font-size: var(--fs-caption); margin-bottom: 10px; }
.crumb b { color: var(--ink); }

h1 { font-size: var(--fs-h1); line-height: 1.3; margin: 6px 0 6px; color: var(--navy-3); }
h2 { font-size: var(--fs-h2); margin: 34px 0 10px; color: var(--navy-3); padding-bottom: 6px; border-bottom: 1px solid var(--line); }
h3 { font-size: var(--fs-h3); margin: 22px 0 8px; color: var(--navy-2); }
p { margin: 10px 0; }
.lead { font-size: 17px; color: var(--ink-soft); }
ul, ol { padding-left: 22px; }
li { margin: 5px 0; }
strong { color: var(--navy-3); }
hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }

/* Hero */
.hero {
  background: linear-gradient(120deg, var(--navy-3), var(--navy-2));
  color: #fff; border-radius: 16px; padding: 34px 30px; margin-bottom: 8px;
}
.hero h1 { color: #fff; font-size: 27px; margin-top: 0; }
.hero p { color: #dbe6f7; font-size: 16px; }
.hero .pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.hero .pills span { background: rgba(255,255,255,.14); padding: 6px 12px; border-radius: 20px; font-size: var(--fs-sub); }

/* Metric / portal cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 16px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 12px; padding: 16px 18px; }
.card .k { font-size: 26px; font-weight: 800; color: var(--navy-2); }
.card .l { font-size: var(--fs-cardlabel); color: var(--ink-soft); margin-top: 3px; }
.card h3 { margin-top: 0; }

/* Callouts */
.note { border-radius: 10px; padding: 12px 16px; margin: 16px 0; font-size: 14.5px; border: 1px solid; }
.note .tag { font-weight: 800; margin-right: 6px; }
.note.tip { background: #f0fbf4; border-color: #b7e4c7; }
.note.tip .tag { color: #1b7a43; }
.note.warn { background: #fff8e6; border-color: #ffe08a; }
.note.warn .tag { color: #a9700a; }
.note.info { background: var(--accent-soft); border-color: #bcd2f5; }
.note.info .tag { color: var(--navy-2); }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: var(--fs-table); }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { background: #f1f5f9; color: var(--navy-3); font-weight: 700; }
tbody tr:nth-child(even) { background: #fafbfd; }

/* Code */
code { background: #eef2f7; padding: 1.5px 6px; border-radius: 5px; font-size: 13.5px; font-family: "JetBrains Mono", ui-monospace, monospace; }
pre { background: var(--navy-3); color: #e2e8f0; padding: 14px 16px; border-radius: 10px; overflow-x: auto; font-size: 13.5px; line-height: 1.6; }
pre code { background: none; padding: 0; color: inherit; }

.foot { margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: var(--fs-caption); }

/* Backdrop for mobile drawer */
.backdrop { display: none; position: fixed; inset: var(--header-h) 0 0 0; background: rgba(15,23,42,.4); z-index: 25; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hdr .burger { display: block; }
  .side { transform: translateX(-100%); transition: transform .2s ease; box-shadow: 4px 0 24px rgba(0,0,0,.12); }
  body.nav-open .side { transform: translateX(0); }
  body.nav-open .backdrop { display: block; }
  .main { margin-left: 0; padding: calc(var(--header-h) + 20px) 18px 60px; }
  .hero { padding: 26px 20px; }
}