/* Vibe Code Textbook — theme "warm orange on cream". Every colour flows through the tokens below. */

:root {
  --paper: #fffaf3;
  --paper-deep: #f4efe8;
  --grid-line: rgba(34, 32, 29, 0.09);
  --ink: #22201d;
  --ink-soft: #64615d;
  --ink-faint: #908d88;
  --accent: #e8590c;
  --accent-hot: #b8430a;
  --accent-glow: rgba(232, 89, 12, 0.14);
  --slab: #fffefb;
  --slab-edge: #d7d3cc;
  --code-bg: #f2ede6;
  --link: #ad4811;
  --shadow: rgba(34, 32, 29, 0.16);
  --font-display: "Manrope", "Segoe UI", sans-serif;
  --font-body: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Source Code Pro", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1a1714;
    --paper-deep: #151210;
    --grid-line: rgba(255, 138, 76, 0.06);
    --ink: #f0e9df;
    --ink-soft: #bab4ac;
    --ink-faint: #85807a;
    --accent: #ff8a4c;
    --accent-hot: #ffa170;
    --accent-glow: rgba(255, 138, 76, 0.1);
    --slab: #282522;
    --slab-edge: #3f3c3a;
    --code-bg: #14110f;
    --link: #ff965e;
    --shadow: rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(135deg, transparent 0 22px, var(--grid-line) 22px 23px);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
}

/* ---- chrome ---- */
.site-top { border-bottom: 2px solid var(--slab-edge); background: var(--slab); box-shadow: 0 2px 0 var(--shadow); }
.site-top-inner { max-width: 1000px; margin: 0 auto; padding: 0.7rem 1rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; text-decoration: none; color: var(--ink); display: inline-flex; align-items: center; gap: 0.55rem; letter-spacing: 0; }
.brand-mark { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--accent) 50%, var(--ink) 50%); display: inline-block; border: 2px solid var(--ink); }
.brand em { color: var(--accent); font-style: normal; }
.site-nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-left: auto; }
.site-nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; padding: 0.15rem 0.1rem; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--accent-hot); border-bottom-color: var(--accent); }
main { max-width: 1000px; margin: 0 auto; padding: 1.2rem 1rem 3rem; }
article { max-width: 760px; }
.site-bottom { border-top: 2px solid var(--slab-edge); background: var(--paper-deep); padding: 1.4rem 1rem 2rem; font-size: 0.85rem; color: var(--ink-soft); }
.site-bottom-inner { max-width: 1000px; margin: 0 auto; }
.site-bottom nav { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.site-bottom a { color: var(--link); }
.legal-line { margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px solid var(--slab-edge); font-size: 0.78rem; color: var(--ink-faint); }

/* ---- text ---- */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.22; letter-spacing: 0; }
h1 { font-size: 2rem; margin: 0.3rem 0 0.6rem; }
h2 { font-size: 1.35rem; margin-top: 2.1rem; }
h3 { font-size: 1.08rem; }
a { color: var(--link); }
.lede { font-size: 1.12rem; color: var(--ink-soft); max-width: 46rem; }
.small { font-size: 0.85rem; color: var(--ink-soft); }
p, li { max-width: 46rem; }
article img { max-width: 100%; height: auto; }
blockquote { border-left: 4px solid var(--accent); margin: 1rem 0; padding: 0.3rem 1rem; color: var(--ink-soft); background: var(--slab); border-radius: 0 8px 8px 0; }
hr { border: 0; border-top: 1px solid var(--slab-edge); margin: 2rem 0; }

/* ---- hero, cards, lists ---- */
.hero { padding: 1.4rem 0 0.4rem; }
.hero h1 { font-size: 2.3rem; max-width: 40rem; }
.accent-line { width: 88px; height: 8px; border-radius: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-hot)); margin: 0.7rem 0 1rem; }
.card, .files-box, .honesty-note { background: var(--slab); border: 2px solid var(--slab-edge); border-radius: 14px; padding: 1rem 1.1rem; margin: 1.2rem 0; }
.card { box-shadow: 0 3px 0 var(--shadow); }
.honesty-note { border-left: 4px solid var(--accent); font-size: 0.93rem; color: var(--ink-soft); }
.files-box h2, .sources h2, .related h2 { font-size: 1.05rem; margin-top: 0.2rem; }
.files-box ul { padding-left: 1.2rem; margin: 0.4rem 0 0; }
.sources { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--slab-edge); font-size: 0.92rem; }
.sources ol { padding-left: 1.3rem; }
.sources li { margin: 0.25rem 0; overflow-wrap: anywhere; }
.related { margin-top: 2rem; }
.related ul { padding-left: 1.2rem; }
.post-list { list-style: none; padding: 0; margin: 1rem 0 1.5rem; display: grid; gap: 0.9rem; }
.post-card { background: var(--slab); border: 2px solid var(--slab-edge); border-radius: 14px; padding: 0.9rem 1.1rem; box-shadow: 0 3px 0 var(--shadow); }
.post-card h3 { margin: 0.15rem 0 0.35rem; font-size: 1.15rem; }
.post-card h3 a { color: var(--ink); text-decoration: none; }
.post-card h3 a:hover { color: var(--accent-hot); }
.post-card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.post-kicker { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); margin: 0 0 0.2rem; text-transform: uppercase; letter-spacing: 0.04em; }
.post-kicker a { color: var(--accent-hot); text-decoration: none; }
.stamp-updated { color: var(--accent-hot); }
.tag-row { margin: 0 0 1rem; }
.tag { display: inline-block; font-family: var(--font-mono); font-size: 0.74rem; padding: 0.1rem 0.5rem; border: 1px solid var(--slab-edge); border-radius: 5px; color: var(--ink-faint); background: var(--paper-deep); margin-right: 0.3rem; }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; padding: 0; margin: 1.2rem 0; list-style: none; }
.topic-card { background: var(--slab); border: 2px solid var(--slab-edge); border-radius: 14px; padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: 0.3rem; }
.topic-card h3 { margin: 0; }
.topic-card h3 a { text-decoration: none; color: var(--ink); }
.topic-card p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }
a.keystone { font-family: var(--font-display); font-weight: 600; padding: 0.55rem 1.1rem; min-height: 44px; border: 2px solid var(--accent-hot); border-radius: 8px; background: var(--accent); color: #fff; text-decoration: none; display: inline-flex; align-items: center; box-shadow: 2px 2px 0 var(--shadow); }

/* ---- code and tables ---- */
pre { background: var(--code-bg); border: 1px solid var(--slab-edge); border-radius: 8px; padding: 0.9rem 1rem; overflow-x: auto; font-size: 0.86rem; line-height: 1.5; max-width: 100%; }
code { font-family: var(--font-mono); }
p code, li code, td code { background: var(--code-bg); border: 1px solid var(--slab-edge); border-radius: 4px; padding: 0.05rem 0.35rem; font-size: 0.9em; }
.highlight pre { margin: 0; }
.highlight { margin: 1rem 0; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.92rem; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--slab-edge); padding: 0.45rem 0.7rem; text-align: left; vertical-align: top; }
th { background: var(--paper-deep); font-family: var(--font-display); font-size: 0.85rem; }

@media (max-width: 560px) {
  h1 { font-size: 1.5rem; }
  .hero h1 { font-size: 1.7rem; }
  .site-top-inner { gap: 0.5rem; }
  body { font-size: 16px; }
}

/* ---- syntax highlighting (Pygments, static classes) ---- */
pre { line-height: 125%; }
td.linenos .normal { color: #666666; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: #666666; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight { background: #f0f0f0; }
.highlight .c { color: #60A0B0; font-style: italic } /* Comment */
.highlight .err { border: 1px solid #F00 } /* Error */
.highlight .k { color: #007020; font-weight: bold } /* Keyword */
.highlight .o { color: #666 } /* Operator */
.highlight .ch { color: #60A0B0; font-style: italic } /* Comment.Hashbang */
.highlight .cm { color: #60A0B0; font-style: italic } /* Comment.Multiline */
.highlight .cp { color: #007020 } /* Comment.Preproc */
.highlight .cpf { color: #60A0B0; font-style: italic } /* Comment.PreprocFile */
.highlight .c1 { color: #60A0B0; font-style: italic } /* Comment.Single */
.highlight .cs { color: #60A0B0; background-color: #FFF0F0 } /* Comment.Special */
.highlight .gd { color: #A00000 } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #F00 } /* Generic.Error */
.highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
.highlight .gi { color: #00A000 } /* Generic.Inserted */
.highlight .go { color: #888 } /* Generic.Output */
.highlight .gp { color: #C65D09; font-weight: bold } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
.highlight .gt { color: #04D } /* Generic.Traceback */
.highlight .kc { color: #007020; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #007020; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #007020; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #007020 } /* Keyword.Pseudo */
.highlight .kr { color: #007020; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #902000 } /* Keyword.Type */
.highlight .m { color: #40A070 } /* Literal.Number */
.highlight .s { color: #4070A0 } /* Literal.String */
.highlight .na { color: #4070A0 } /* Name.Attribute */
.highlight .nb { color: #007020 } /* Name.Builtin */
.highlight .nc { color: #0E84B5; font-weight: bold } /* Name.Class */
.highlight .no { color: #60ADD5 } /* Name.Constant */
.highlight .nd { color: #555; font-weight: bold } /* Name.Decorator */
.highlight .ni { color: #D55537; font-weight: bold } /* Name.Entity */
.highlight .ne { color: #007020 } /* Name.Exception */
.highlight .nf { color: #06287E } /* Name.Function */
.highlight .nl { color: #002070; font-weight: bold } /* Name.Label */
.highlight .nn { color: #0E84B5; font-weight: bold } /* Name.Namespace */
.highlight .nt { color: #062873; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #BB60D5 } /* Name.Variable */
.highlight .ow { color: #007020; font-weight: bold } /* Operator.Word */
.highlight .w { color: #BBB } /* Text.Whitespace */
.highlight .mb { color: #40A070 } /* Literal.Number.Bin */
.highlight .mf { color: #40A070 } /* Literal.Number.Float */
.highlight .mh { color: #40A070 } /* Literal.Number.Hex */
.highlight .mi { color: #40A070 } /* Literal.Number.Integer */
.highlight .mo { color: #40A070 } /* Literal.Number.Oct */
.highlight .sa { color: #4070A0 } /* Literal.String.Affix */
.highlight .sb { color: #4070A0 } /* Literal.String.Backtick */
.highlight .sc { color: #4070A0 } /* Literal.String.Char */
.highlight .dl { color: #4070A0 } /* Literal.String.Delimiter */
.highlight .sd { color: #4070A0; font-style: italic } /* Literal.String.Doc */
.highlight .s2 { color: #4070A0 } /* Literal.String.Double */
.highlight .se { color: #4070A0; font-weight: bold } /* Literal.String.Escape */
.highlight .sh { color: #4070A0 } /* Literal.String.Heredoc */
.highlight .si { color: #70A0D0; font-style: italic } /* Literal.String.Interpol */
.highlight .sx { color: #C65D09 } /* Literal.String.Other */
.highlight .sr { color: #235388 } /* Literal.String.Regex */
.highlight .s1 { color: #4070A0 } /* Literal.String.Single */
.highlight .ss { color: #517918 } /* Literal.String.Symbol */
.highlight .bp { color: #007020 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #06287E } /* Name.Function.Magic */
.highlight .vc { color: #BB60D5 } /* Name.Variable.Class */
.highlight .vg { color: #BB60D5 } /* Name.Variable.Global */
.highlight .vi { color: #BB60D5 } /* Name.Variable.Instance */
.highlight .vm { color: #BB60D5 } /* Name.Variable.Magic */
.highlight .il { color: #40A070 } /* Literal.Number.Integer.Long */

@media (prefers-color-scheme: dark) {
  pre { line-height: 125%; }
  td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
  span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
  td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
  span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
  .highlight .hll { background-color: #49483e }
  .highlight { background: #272822; color: #F8F8F2 }
  .highlight .c { color: #959077 } /* Comment */
  .highlight .err { color: #ED007E; background-color: #1E0010 } /* Error */
  .highlight .esc { color: #F8F8F2 } /* Escape */
  .highlight .g { color: #F8F8F2 } /* Generic */
  .highlight .k { color: #66D9EF } /* Keyword */
  .highlight .l { color: #AE81FF } /* Literal */
  .highlight .n { color: #F8F8F2 } /* Name */
  .highlight .o { color: #FF4689 } /* Operator */
  .highlight .x { color: #F8F8F2 } /* Other */
  .highlight .p { color: #F8F8F2 } /* Punctuation */
  .highlight .ch { color: #959077 } /* Comment.Hashbang */
  .highlight .cm { color: #959077 } /* Comment.Multiline */
  .highlight .cp { color: #959077 } /* Comment.Preproc */
  .highlight .cpf { color: #959077 } /* Comment.PreprocFile */
  .highlight .c1 { color: #959077 } /* Comment.Single */
  .highlight .cs { color: #959077 } /* Comment.Special */
  .highlight .gd { color: #FF4689 } /* Generic.Deleted */
  .highlight .ge { color: #F8F8F2; font-style: italic } /* Generic.Emph */
  .highlight .ges { color: #F8F8F2; font-weight: bold; font-style: italic } /* Generic.EmphStrong */
  .highlight .gr { color: #F8F8F2 } /* Generic.Error */
  .highlight .gh { color: #F8F8F2 } /* Generic.Heading */
  .highlight .gi { color: #A6E22E } /* Generic.Inserted */
  .highlight .go { color: #66D9EF } /* Generic.Output */
  .highlight .gp { color: #FF4689; font-weight: bold } /* Generic.Prompt */
  .highlight .gs { color: #F8F8F2; font-weight: bold } /* Generic.Strong */
  .highlight .gu { color: #959077 } /* Generic.Subheading */
  .highlight .gt { color: #F8F8F2 } /* Generic.Traceback */
  .highlight .kc { color: #66D9EF } /* Keyword.Constant */
  .highlight .kd { color: #66D9EF } /* Keyword.Declaration */
  .highlight .kn { color: #FF4689 } /* Keyword.Namespace */
  .highlight .kp { color: #66D9EF } /* Keyword.Pseudo */
  .highlight .kr { color: #66D9EF } /* Keyword.Reserved */
  .highlight .kt { color: #66D9EF } /* Keyword.Type */
  .highlight .ld { color: #E6DB74 } /* Literal.Date */
  .highlight .m { color: #AE81FF } /* Literal.Number */
  .highlight .s { color: #E6DB74 } /* Literal.String */
  .highlight .na { color: #A6E22E } /* Name.Attribute */
  .highlight .nb { color: #F8F8F2 } /* Name.Builtin */
  .highlight .nc { color: #A6E22E } /* Name.Class */
  .highlight .no { color: #66D9EF } /* Name.Constant */
  .highlight .nd { color: #A6E22E } /* Name.Decorator */
  .highlight .ni { color: #F8F8F2 } /* Name.Entity */
  .highlight .ne { color: #A6E22E } /* Name.Exception */
  .highlight .nf { color: #A6E22E } /* Name.Function */
  .highlight .nl { color: #F8F8F2 } /* Name.Label */
  .highlight .nn { color: #F8F8F2 } /* Name.Namespace */
  .highlight .nx { color: #A6E22E } /* Name.Other */
  .highlight .py { color: #F8F8F2 } /* Name.Property */
  .highlight .nt { color: #FF4689 } /* Name.Tag */
  .highlight .nv { color: #F8F8F2 } /* Name.Variable */
  .highlight .ow { color: #FF4689 } /* Operator.Word */
  .highlight .pm { color: #F8F8F2 } /* Punctuation.Marker */
  .highlight .w { color: #F8F8F2 } /* Text.Whitespace */
  .highlight .mb { color: #AE81FF } /* Literal.Number.Bin */
  .highlight .mf { color: #AE81FF } /* Literal.Number.Float */
  .highlight .mh { color: #AE81FF } /* Literal.Number.Hex */
  .highlight .mi { color: #AE81FF } /* Literal.Number.Integer */
  .highlight .mo { color: #AE81FF } /* Literal.Number.Oct */
  .highlight .sa { color: #E6DB74 } /* Literal.String.Affix */
  .highlight .sb { color: #E6DB74 } /* Literal.String.Backtick */
  .highlight .sc { color: #E6DB74 } /* Literal.String.Char */
  .highlight .dl { color: #E6DB74 } /* Literal.String.Delimiter */
  .highlight .sd { color: #E6DB74 } /* Literal.String.Doc */
  .highlight .s2 { color: #E6DB74 } /* Literal.String.Double */
  .highlight .se { color: #AE81FF } /* Literal.String.Escape */
  .highlight .sh { color: #E6DB74 } /* Literal.String.Heredoc */
  .highlight .si { color: #E6DB74 } /* Literal.String.Interpol */
  .highlight .sx { color: #E6DB74 } /* Literal.String.Other */
  .highlight .sr { color: #E6DB74 } /* Literal.String.Regex */
  .highlight .s1 { color: #E6DB74 } /* Literal.String.Single */
  .highlight .ss { color: #E6DB74 } /* Literal.String.Symbol */
  .highlight .bp { color: #F8F8F2 } /* Name.Builtin.Pseudo */
  .highlight .fm { color: #A6E22E } /* Name.Function.Magic */
  .highlight .vc { color: #F8F8F2 } /* Name.Variable.Class */
  .highlight .vg { color: #F8F8F2 } /* Name.Variable.Global */
  .highlight .vi { color: #F8F8F2 } /* Name.Variable.Instance */
  .highlight .vm { color: #F8F8F2 } /* Name.Variable.Magic */
  .highlight .il { color: #AE81FF } /* Literal.Number.Integer.Long */
}