/* NewbieNeuro — khung bài viết (dựng bởi website/build-articles.mjs). Token dùng chung với trang chủ, bộ công cụ và video atlas. */
:root {
  --bg: #E7EAE7; --panel: #F1F3F0; --sunk: #DBE0DC; --rowHover: #EFF2EF;
  --ink: #12191A; --ink2: #3C4745; --meta: #5B6764;
  --hair: #BFC7C1; --strong: #12191A; --dash: #8E9A94;
  --core: #A8114F; --coreH: #78093A; --coreOn: #FFFFFF; --coreBg: #F3DCE6;
  --pen: #1B6655; --penOn: #FFFFFF; --penBg: #D3E6DE;
  --amber: #8A5A00; --amberBg: #F3E5C4;
  --inv: #12191A; --invInk: #E7EAE7; --invInk2: #C3CCC8; --invMeta: #9DA9A4; --invHair: #3A4548; --invCore: #FF7FAE; --invPen: #6ED3B4;
  --room: #0C1214; --roomHair: #2E3A3D; --roomInk: #F1F3F0;
  --shadow: rgba(12, 18, 20, 0.16);
  --display: 'Archivo', 'Be Vietnam Pro', system-ui, sans-serif;
  --body: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #12191B; --panel: #1B2326; --sunk: #283236; --rowHover: #222B2F;
  --ink: #E3E9E5; --ink2: #B2BDB8; --meta: #8B9793;
  --hair: #2F3A3D; --strong: #5A686D; --dash: #4A585C;
  --core: #FF74A8; --coreH: #FFA3C6; --coreOn: #24050F; --coreBg: #3A1024;
  --pen: #63CCAB; --penOn: #05261D; --penBg: #16352C;
  --amber: #EFC478; --amberBg: #3A2A13;
  --inv: #28343A; --invInk: #EDF2EF; --invInk2: #C0CBC6; --invMeta: #94A09B; --invHair: #435256; --invCore: #FF8FBB; --invPen: #7FDCBE;
  --room: #080C0E; --roomHair: #283235; --roomInk: #EDF2EF;
  --shadow: rgba(0, 0, 0, 0.55);
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 16.5px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--core); text-decoration: none; }
a:hover { color: var(--coreH); text-decoration: underline; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--core); outline-offset: 3px; }
.mono { font-family: var(--mono); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }


.art { padding-bottom: 80px; }
.art-head { padding: 44px 0 0; max-width: 760px; }
.crumbs { margin: 0 0 14px; font-size: 13.5px; color: var(--meta); }
.art-code { margin: 0 0 8px; font-size: 14px; color: var(--core); }
h1 { margin: 0 0 14px; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 730; font-size: clamp(30px, 4.6vw, 50px); line-height: 1.05; letter-spacing: -0.026em; }
.lead { margin: 0; font-size: 18px; line-height: 1.6; color: var(--ink2); }
.badges { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.badge { padding: 5px 11px; font-size: 12.5px; font-weight: 500; color: var(--ink2); background: var(--sunk); border-radius: 2px; }
.badge-core { color: var(--core); background: var(--coreBg); font-weight: 600; }

.meta { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px 24px; margin: 30px 0 0; padding: 20px 0; border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); }
.meta div.wide { grid-column: 1 / -1; }
.meta dt { font-size: 12.5px; color: var(--meta); margin-bottom: 3px; }
.meta dd { margin: 0; font-size: 14.5px; }

.keybox { margin: 30px 0 0; padding: 22px 26px; background: var(--inv); color: var(--invInk); border-radius: 2px; }
.keybox h2 { margin: 0 0 12px; font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 700; font-size: 20px; letter-spacing: -0.015em; }
.keybox ul { margin: 0; padding-left: 20px; }
.keybox li { margin-bottom: 8px; color: var(--invInk2); font-size: 15.5px; line-height: 1.6; }
.keybox li b { color: var(--invInk); }

.art-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 52px; margin-top: 44px; align-items: start; }
.toc { position: sticky; top: 20px; font-size: 13.5px; }
.toc-head { margin: 0 0 10px; font-weight: 600; color: var(--meta); font-size: 12.5px; }
.toc ol { margin: 0; padding: 0; list-style: none; border-left: 1px solid var(--hair); }
.toc li a { display: block; padding: 7px 0 7px 14px; margin-left: -1px; border-left: 2px solid transparent; color: var(--ink2); }
.toc li a:hover { color: var(--ink); text-decoration: none; }
.toc li a.on { color: var(--core); border-left-color: var(--core); font-weight: 500; }

.art-body { max-width: 720px; }
.sec { padding-top: 34px; }
.sec + .sec { margin-top: 10px; }
.sec h2 { display: flex; align-items: baseline; gap: 12px; margin: 0 0 16px; padding-bottom: 12px; border-bottom: 2px solid var(--strong); font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 700; font-size: clamp(22px, 2.6vw, 30px); letter-spacing: -0.02em; }
.sec-no { font-size: 14px; color: var(--core); font-weight: 500; flex-shrink: 0; }
.prose h3 { margin: 28px 0 10px; font-family: var(--display); font-variation-settings: 'wdth' 110, 'wght' 680; font-size: 18px; letter-spacing: -0.01em; }
.prose p { margin: 0 0 14px; }
.prose ul { margin: 0 0 16px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose .callout { padding: 14px 16px; background: var(--penBg); border-left: 3px solid var(--pen); border-radius: 2px; }

.table-wrap { overflow-x: auto; margin: 6px 0 18px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14.5px; background: var(--panel); border: 1px solid var(--hair); min-width: 520px; }
.tbl th, .tbl td { text-align: left; padding: 10px 12px; border-top: 1px solid var(--hair); vertical-align: top; }
.tbl thead th { background: var(--inv); color: var(--invInk); font-size: 12.5px; font-weight: 600; border-top: 0; }
.tbl tbody tr:hover { background: var(--rowHover); }
.tbl .mono { color: var(--core); white-space: nowrap; }

.video { margin: 0 0 26px; }
.frame { position: relative; aspect-ratio: 16 / 9; background: var(--room); border: 1px solid var(--hair); border-radius: 2px; overflow: hidden; }
.frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.facade { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; background: var(--room); display: block; }
.facade img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .8; }
.facade:hover img { opacity: .95; }
.facade .play { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 64px; height: 64px; border: 2px solid #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; background: rgba(12, 18, 20, .45); }
.facade:hover .play { background: var(--core); border-color: var(--core); }
.close-btn { position: absolute; right: 8px; top: 8px; z-index: 2; min-height: 44px; padding: 10px 14px; font-size: 12.5px; color: var(--roomInk); background: rgba(12, 18, 20, .8); border: 1px solid var(--roomHair); border-radius: 2px; }
.close-btn:hover { background: var(--core); border-color: var(--core); color: #fff; }
.video figcaption { padding-top: 12px; }
.v-ma { display: block; font-size: 12.5px; color: var(--core); }
.v-vi { display: block; font-size: 17px; margin: 2px 0 1px; }
.v-en { display: block; font-size: 13.5px; font-style: italic; color: var(--meta); }
.v-y { margin: 8px 0 0; font-size: 14.5px; color: var(--ink2); }
.v-src { margin: 8px 0 0; font-size: 13px; color: var(--meta); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.tool-card { display: flex; flex-direction: column; gap: 3px; padding: 16px; background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; color: var(--ink); }
.tool-card:hover { border-color: var(--pen); text-decoration: none; }
.tool-card .mono { font-size: 12px; color: var(--core); }
.tool-card b { font-size: 15.5px; }
.tool-card .vi { font-size: 13.5px; color: var(--meta); line-height: 1.45; }

.rel, .log, .src { margin: 0; padding-left: 0; list-style: none; font-size: 15px; }
.rel li, .log li { padding: 11px 0; border-top: 1px solid var(--hair); }
.rel .mono, .log .mono { color: var(--core); margin-right: 6px; }
.src { list-style: decimal; padding-left: 22px; font-size: 14px; color: var(--ink2); }
.src li { margin-bottom: 8px; }


.site-foot { border-top: 1px solid var(--hair); padding: 26px 0 60px; font-size: 13.5px; color: var(--meta); }
.site-foot p { margin: 0 0 6px; max-width: 780px; }
.site-foot .disc { color: var(--ink2); }

@media (max-width: 900px) {
  .art-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc { position: static; margin-bottom: 26px; padding: 16px 18px; background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; }
  .toc ol { border-left: 0; columns: 2; column-gap: 20px; }
  .toc li a { padding-left: 0; border-left: 0; }
  .toc li a.on { border-left: 0; }
  .meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .art-head { padding-top: 26px; }
  .meta { grid-template-columns: minmax(0, 1fr); }
  .keybox { padding: 18px 18px; }
  .toc ol { columns: 1; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }

/* ---------- bổ sung cho bài dựng từ markdown ---------- */
.crumbs a { color: var(--meta); }
.crumbs a:hover { color: var(--core); }
.keybox p { margin: 0 0 8px; color: var(--invInk2); }
.keybox strong { color: var(--invInk); }
.prose ol { margin: 0 0 16px; padding-left: 24px; }
.prose strong { font-weight: 600; }
.prose blockquote { margin: 0 0 16px; padding: 14px 18px; background: var(--panel); border-left: 3px solid var(--strong); border-radius: 2px; color: var(--ink2); font-size: 15px; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code { font-family: var(--mono); font-size: .9em; }
.code-ref { font-size: .9em; color: var(--core); white-space: nowrap; }
span.code-ref { color: var(--ink2); }
.tbl td strong { font-weight: 600; }

.fig { margin: 8px 0 24px; }
.fig img { display: block; max-width: 100%; height: auto; margin: 0 auto; background: #fff; border: 1px solid var(--hair); border-radius: 2px; }
.fig figcaption { margin-top: 10px; font-size: 13.5px; line-height: 1.55; color: var(--meta); }

.callout { margin: 6px 0 20px; padding: 14px 18px 4px; background: var(--penBg); border-left: 3px solid var(--pen); border-radius: 2px; }
.callout-h { margin: 0 0 6px !important; font-size: 12.5px; font-weight: 600; letter-spacing: .02em; text-transform: uppercase; color: var(--pen); }
.callout--canhbao { background: var(--coreBg); border-left-color: var(--core); }
.callout--canhbao .callout-h { color: var(--core); }
.callout--luuy { background: var(--amberBg); border-left-color: var(--amber); }
.callout--luuy .callout-h { color: var(--amber); }

.tool-card .go { margin-top: 6px; font-size: 13px; font-weight: 600; color: var(--pen); }
.tool-card--inline { margin: 6px 0 22px; border-left: 3px solid var(--pen); }
.rel-list ul { list-style: none; padding-left: 0; }
.rel-list li { padding: 10px 0; margin: 0; border-top: 1px solid var(--hair); }
.src ol { font-size: 14px; color: var(--ink2); }
.src li { margin-bottom: 8px; }
.site-foot { margin-top: 20px; }
@media (max-width: 640px) {
  .fig figcaption { font-size: 13px; }
}

/* ---------- trang chính của mục ---------- */
.muc-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 24px; margin: 26px 0 8px; }
.muc-jump { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 26px; }
.muc-jump a { padding: 7px 11px; font-size: 13.5px; font-weight: 500; color: var(--ink); background: var(--panel); border: 1px solid var(--hair); border-radius: 2px; }
.muc-jump a:hover { border-color: var(--dash); background: var(--sunk); text-decoration: none; }
.muc-jump .mono { color: var(--core); font-size: 12px; }
.muc-only { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-size: 14px; color: var(--ink2); cursor: pointer; }
.muc-only input { width: 18px; height: 18px; accent-color: var(--core); }
.mg { padding-top: 34px; scroll-margin-top: 12px; }
.mg h2 { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; margin: 0 0 6px; padding-bottom: 12px; border-bottom: 2px solid var(--strong); font-family: var(--display); font-variation-settings: 'wdth' 112, 'wght' 700; font-size: clamp(21px, 2.4vw, 28px); letter-spacing: -0.02em; }
.mg-id { font-size: 14px; color: var(--core); font-weight: 500; }
.mg-n { margin-left: auto; font-family: var(--body); font-variation-settings: normal; font-size: 13px; font-weight: 500; letter-spacing: 0; color: var(--meta); }
.mg h3 { margin: 20px 0 4px; font-size: 13px; font-weight: 600; letter-spacing: .02em; text-transform: uppercase; color: var(--meta); }
.mr-list { list-style: none; margin: 0; padding: 0; }
.mr > a, .mr > div { display: grid; grid-template-columns: 104px minmax(0, 1fr) auto; align-items: baseline; gap: 12px; padding: 12px 8px; border-bottom: 1px solid var(--hair); color: var(--ink2); }
.mr > a { color: var(--ink); }
.mr > a:hover { background: var(--rowHover); text-decoration: none; }
.mr-code { font-size: 13px; color: var(--meta); }
.mr.is-live .mr-code { color: var(--core); }
.mr-title { font-size: 15.5px; line-height: 1.45; }
.mr.is-live .mr-title { font-weight: 600; }
.mr-p { font-family: var(--mono); font-size: 12px; color: var(--meta); }
.mr-p0 { color: var(--core); }
.mr-status { justify-self: end; font-size: 12.5px; color: var(--meta); white-space: nowrap; }
.mr.is-live .mr-status { font-weight: 600; color: var(--pen); }
.muc.only-live .mr:not(.is-live), .muc.only-live .mg[data-live="0"] { display: none; }
.muc-empty { margin: 30px 0; padding: 18px; border: 1px dashed var(--dash); color: var(--meta); }
@media (max-width: 640px) {
  .mr > a, .mr > div { grid-template-columns: minmax(0, 1fr) auto; gap: 2px 10px; padding: 11px 4px; }
  .mr-code { grid-column: 1; grid-row: 1; }
  .mr-title { grid-column: 1 / -1; grid-row: 2; }
  .mr-status { grid-column: 1 / -1; grid-row: 3; justify-self: start; }
}