/* Solana Bot Guide: trang đọc bài, chữ rõ, ít màu. Mọi màu là biến, có sáng/tối. */
:root {
  --bg: #fbfaf7; --surface: #ffffff; --sunk: #f2f0ea; --fg: #17181c; --muted: #5d6170; --line: #e4e1d8;
  --accent: #6d4fd8; --accent-soft: #f1edff; --teal: #0f9f8c; --amber: #b7791f;
  --radius: 12px; --mono: 'JetBrains Mono', ui-monospace, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #0d1117; --surface: #141a22; --sunk: #1a212b; --fg: #e8eaf0; --muted: #9aa3b5; --line: #262f3b; --accent: #b29dff; --accent-soft: #1f1a33; --teal: #2dd4bf; --amber: #f5b942; color-scheme: dark; }
}
:root[data-theme="dark"] { --bg: #0d1117; --surface: #141a22; --sunk: #1a212b; --fg: #e8eaf0; --muted: #9aa3b5; --line: #262f3b; --accent: #b29dff; --accent-soft: #1f1a33; --teal: #2dd4bf; --amber: #f5b942; color-scheme: dark; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.65 Manrope, system-ui, -apple-system, 'Segoe UI', sans-serif; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* đầu trang */
.hd { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 88%, transparent); position: sticky; top: 0; backdrop-filter: blur(8px); z-index: 5; }
.hd-in { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 800; letter-spacing: -0.01em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand span { white-space: nowrap; }
@media (max-width: 400px) { .hd nav a { padding: 10px 6px; } .brand { gap: 8px; } }
.brand .l1 { fill: var(--teal); } .brand .l2 { fill: var(--accent); } .brand .l3 { fill: var(--amber); }
.hd nav { display: flex; align-items: center; gap: 4px; }
.hd nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; padding: 10px; border-radius: 8px; }
.hd nav a:hover { color: var(--fg); background: var(--sunk); }
.theme { width: 44px; height: 44px; border: 0; background: transparent; color: var(--muted); border-radius: 8px; cursor: pointer; display: grid; place-items: center; }
.theme:hover { background: var(--sunk); color: var(--fg); }
.theme svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; }

/* trang chủ */
.hero { padding: 56px 0 24px; max-width: 760px; }
.kicker { font: 600 13px/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--teal); margin: 0 0 14px; }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 16px; }
.lead { font-size: 19px; color: var(--muted); margin: 0; }
.section { padding: 28px 0; }
.section > h2, .related > h2 { font-size: 22px; letter-spacing: -0.01em; margin: 0 0 14px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.card { display: flex; flex-direction: column; gap: 8px; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--fg); transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card strong { font-size: 18px; line-height: 1.3; }
.card span:last-child { color: var(--muted); font-size: 15px; line-height: 1.5; }
.tag { align-self: flex-start; font: 600 11.5px/1 var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); background: var(--accent-soft); padding: 5px 8px; border-radius: 6px; }
.principles ul { padding-left: 20px; max-width: 760px; }
.principles li { margin: 8px 0; }

/* bài viết */
.crumb { font-size: 14px; color: var(--muted); padding: 22px 0 0; }
.crumb a { color: var(--muted); }
.prose { max-width: 720px; padding: 8px 0 32px; }
.prose h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.12; letter-spacing: -0.025em; margin: 10px 0 10px; }
.prose h2 { font-size: 25px; line-height: 1.25; letter-spacing: -0.015em; margin: 40px 0 10px; scroll-margin-top: 76px; }
.prose h3 { font-size: 19px; margin: 26px 0 6px; }
.prose p, .prose li { overflow-wrap: anywhere; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 6px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 18px; margin: 0 0 24px; font-size: 15px; }
.toc summary { cursor: pointer; font-weight: 700; }
.toc ol { margin: 8px 0 4px; }
.aff-box { margin: 22px 0; padding: 16px 18px; background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line)); border-radius: var(--radius); }
.aff-box a { font-weight: 700; }
.tbl { overflow-x: auto; margin: 18px 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.tbl table { border-collapse: collapse; width: 100%; font-size: 15px; line-height: 1.45; }
.tbl th, .tbl td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); background: var(--sunk); }
.tbl tr:last-child td { border-bottom: 0; }
.related { padding: 8px 0 40px; border-top: 1px solid var(--line); padding-top: 28px; }
code { font-family: var(--mono); font-size: 0.9em; }

/* chân trang */
.ft { border-top: 1px solid var(--line); background: var(--surface); margin-top: 24px; }
.ft-in { display: grid; grid-template-columns: 1fr 2fr; gap: 24px; padding-top: 28px; padding-bottom: 36px; font-size: 14.5px; color: var(--muted); }
.ft strong { color: var(--fg); }
.ft p { margin: 0 0 8px; }
@media (max-width: 720px) { .ft-in { grid-template-columns: 1fr; } .hero { padding-top: 36px; } body { font-size: 16.5px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* hồ sơ công cụ, chủ đề, nút (thêm 12/10/2026) */
:root { --ok: #0f7f70; --ok-soft: #e3f6f2; --warn: #9a5b00; --warn-soft: #fdf1dc; --cta: #f5b942; --on-cta: #17181c; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --ok: #2dd4bf; --ok-soft: #10302c; --warn: #f5b942; --warn-soft: #33270f; } }
:root[data-theme="dark"] { --ok: #2dd4bf; --ok-soft: #10302c; --warn: #f5b942; --warn-soft: #33270f; }
.page-head { max-width: 760px; padding: 10px 0 8px; }
.page-head h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.1; letter-spacing: -0.025em; margin: 6px 0 12px; }
.tag.ok, .src.ok { color: var(--ok); background: var(--ok-soft); }
.src { font: 600 11.5px/1 var(--mono); padding: 5px 7px; border-radius: 6px; white-space: nowrap; }
.src.warn { color: var(--warn); background: var(--warn-soft); }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border-radius: 10px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); color: var(--fg); background: var(--surface); transition: border-color .15s, background .15s; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--cta); color: var(--on-cta); border-color: transparent; }
.btn.primary:hover { filter: brightness(1.05); }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 18px 0 0; }
.note, .small { font-size: 13.5px; color: var(--muted); }
.trust { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14.5px; color: var(--muted); }
.trust li::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 8px; vertical-align: middle; }
.count { font: 600 12px/1 var(--mono); color: var(--muted) !important; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .two { grid-template-columns: 1fr; } }
.ticks, .warns { list-style: none; padding: 0; margin: 0; }
.ticks li, .warns li { position: relative; padding-left: 26px; margin: 8px 0; }
.ticks li::before, .warns li::before { position: absolute; left: 0; top: 1px; font-weight: 800; }
.ticks li::before { content: "✓"; color: var(--ok); }
.warns li::before { content: "!"; color: var(--warn); left: 6px; }
.chips { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); font-size: 14.5px; }
.links { padding-left: 20px; } .links li { margin: 6px 0; } .links code { color: var(--muted); }
.toolbox { margin: 28px 0 0; padding: 18px; border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }
.toolbox strong { display: block; margin: 8px 0 2px; } .toolbox p { margin: 0; color: var(--muted); font-size: 15px; max-width: 480px; }
.aff-box a { color: var(--fg); background: var(--cta); padding: 2px 8px; border-radius: 6px; text-decoration: none; }
.aff-box { background: var(--warn-soft); border-color: color-mix(in srgb, var(--cta) 45%, var(--line)); }
@media (max-width: 560px) {
  .hd nav a:first-child { display: none; }
  .hd nav a { padding: 10px 7px; font-size: 14.5px; }
  .facts thead { display: none; }
  .facts tr { display: block; padding: 12px 14px; border-bottom: 1px solid var(--line); }
  .facts tr:last-child { border-bottom: 0; }
  .facts td { display: block; padding: 2px 0; border: 0; }
  .facts td:last-child { padding-top: 6px; }
}