/* The Local-AI Cookbook — wwAIlab */
:root{
  --bg:#0a0f1d; --bg2:#0e1526; --surface:#121a2e; --surface2:#16203a;
  --text:#e7ecf6; --muted:#8c97ad; --border:#243049; --code-bg:#0c1322;
  --prod:#3b82f6; --ai:#34d399; --accent:#22d3ee; --danger:#f0506e; --warn:#fbbf24;
  --maxw:880px;
}
html[data-theme="light"]{
  --bg:#f5f7fb; --bg2:#eef2f8; --surface:#ffffff; --surface2:#f3f6fc;
  --text:#1a2233; --muted:#5b6678; --border:#dde3ee; --code-bg:#0c1322;
  --prod:#2563eb; --ai:#0e9f6e; --accent:#0891b2;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:-apple-system,"Inter","PingFang TC","Microsoft JhengHei",Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;font-size:16.5px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* progress + topbar */
#progress-bar{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--prod),var(--ai),var(--accent));transition:width .1s}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:.6rem 1.2rem;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:.45rem;color:var(--text)}
.brand:hover{text-decoration:none}
.logo-text{font-family:"Baloo 2",ui-rounded,"SF Pro Rounded","Hiragino Maru Gothic ProN",
  "Varela Round",system-ui,sans-serif;font-weight:800;font-size:1.45rem;line-height:1;
  letter-spacing:-.01em;color:var(--text)}
.logo-text .hl{color:#3a72f7}
html[data-theme="light"] .logo-text .hl{color:#2f63e0}
.brand-sep{color:var(--muted)}
.brand-title{font-weight:700;font-size:.92rem;color:var(--muted)}
.top-actions{display:flex;align-items:center;gap:.6rem}
.tiers{display:flex;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:2px}
.tiers-label{color:var(--muted);font-size:.72rem;font-weight:700;padding:0 .4rem 0 .35rem}
.tier{border:0;background:transparent;color:var(--muted);font:inherit;font-size:.78rem;font-weight:600;
  padding:.32rem .6rem;border-radius:7px;cursor:pointer}
.tier.active{background:var(--accent);color:#04121b}
.lang{font-weight:700;font-size:.82rem;border:1px solid var(--border);border-radius:8px;padding:.32rem .55rem;color:var(--text)}
.iconbtn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:8px;
  width:34px;height:31px;cursor:pointer;font-size:1rem}

/* layout */
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:2rem;
  max-width:1240px;margin:0 auto;padding:0 1.2rem}
.toc{position:sticky;top:64px;align-self:start;height:calc(100vh - 80px);overflow-y:auto;
  padding:1.2rem 0;font-size:.86rem}
.toc-title{font-weight:800;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.toc-progress{color:var(--muted);font-size:.78rem;margin:.3rem 0 .8rem}
.toc-progress b{color:var(--ai)}
.toc ul{list-style:none}
.toc li a{display:block;color:var(--muted);padding:.2rem .5rem;border-left:2px solid transparent;border-radius:0 6px 6px 0}
.toc li a:hover{color:var(--text);text-decoration:none;background:var(--surface)}
.toc-part>a{color:var(--text);font-weight:700;margin-top:.5rem}
.toc-ch>a{padding-left:1rem;font-size:.82rem}
.toc li a.spy{color:var(--accent);border-left-color:var(--accent);background:var(--surface)}

.content{min-width:0;padding:1rem 0 4rem}
.content :is(p,ul,ol,table,.callout,.fig,.meta){max-width:var(--maxw)}
.content p{margin:.7rem 0}
.content ul,.content ol{margin:.6rem 0 .6rem 1.3rem}
.content li{margin:.25rem 0}
.content h2.part-title{font-size:1.7rem;font-weight:800;margin:2.4rem 0 1rem;letter-spacing:-.02em;
  padding-bottom:.4rem;border-bottom:2px solid var(--border)}
.content h3.subsec{font-size:1.2rem;font-weight:750;margin:1.6rem 0 .5rem;color:var(--text)}
.anchor{position:relative;top:-70px}
:target{scroll-margin-top:74px}

/* hero */
.hero{min-height:78vh;display:flex;align-items:center;justify-content:center;text-align:center;
  background:radial-gradient(1200px 500px at 50% -10%,color-mix(in srgb,var(--accent) 22%,transparent),transparent),
             radial-gradient(900px 500px at 80% 10%,color-mix(in srgb,var(--ai) 14%,transparent),transparent),var(--bg);
  border-bottom:1px solid var(--border);padding:3rem 1.2rem}
.hero-inner{max-width:820px;animation:rise .9s ease both}
.hero h1{font-size:clamp(2.1rem,6vw,4rem);font-weight:850;letter-spacing:-.03em;line-height:1.05;
  background:linear-gradient(120deg,var(--text),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .tagline{font-size:clamp(1rem,2.4vw,1.4rem);color:var(--muted);margin-top:1.2rem}
.hero-cue{margin-top:2.5rem;font-size:1.6rem;color:var(--accent);animation:bob 1.8s infinite}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}
@media (prefers-reduced-motion:reduce){.hero-inner,.hero-cue{animation:none}}

/* recipe cards */
.recipe{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin:1.4rem 0;overflow:hidden;
  max-width:var(--maxw)}
.recipe-head{display:flex;align-items:center;gap:.7rem;padding:1rem 1.2rem;cursor:pointer;
  background:linear-gradient(0deg,transparent,color-mix(in srgb,var(--accent) 6%,transparent))}
.recipe-head h2{font-size:1.25rem;font-weight:800;flex:1;letter-spacing:-.01em}
.recipe.collapsed .recipe-body{display:none}
.recipe.done{border-color:color-mix(in srgb,var(--ai) 55%,var(--border))}
.collapse{border:0;background:var(--surface2);color:var(--muted);width:28px;height:28px;border-radius:7px;
  font-size:1.2rem;cursor:pointer;line-height:1}
.recipe-body{padding:0 1.2rem 1.3rem}
.recipe-sub{color:var(--muted);font-style:italic;margin:.2rem 0 .8rem!important;font-size:1.02rem}
.done{position:relative;display:inline-flex;cursor:pointer}
.done input{position:absolute;opacity:0}
.done span{width:22px;height:22px;border:2px solid var(--border);border-radius:6px;display:block;transition:.15s}
.done input:checked+span{background:var(--ai);border-color:var(--ai);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23042' stroke-width='3.5'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E");
  background-size:74%;background-position:center;background-repeat:no-repeat}

/* meta bar */
.meta{font-size:.86rem;color:var(--muted);margin:.2rem 0 1rem;padding:.5rem .8rem;
  background:var(--surface2);border:1px solid var(--border);border-radius:9px}
.meta strong{color:var(--warn)}

/* callouts */
.callout{margin:1rem 0;padding:.9rem 1.1rem .9rem 1.2rem;border-radius:10px;border:1px solid var(--border);
  border-left:4px solid var(--muted);background:var(--surface2)}
.callout>p:first-child{margin-top:0}
.callout>p:last-child{margin-bottom:0}
.callout strong:first-child{letter-spacing:.02em}
.c-why{border-left-color:var(--prod);background:color-mix(in srgb,var(--prod) 9%,var(--surface2))}
.c-ingredients{border-left-color:#94a3b8}
.c-steps{border-left-color:var(--ai);background:color-mix(in srgb,var(--ai) 8%,var(--surface2))}
.c-budget{border-left-color:var(--warn);background:color-mix(in srgb,var(--warn) 9%,var(--surface2))}
.c-pros{border-left-color:#a78bfa;background:color-mix(in srgb,#a78bfa 9%,var(--surface2))}
.c-taste{border-left-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface2))}
.c-mistakes{border-left-color:var(--danger);background:color-mix(in srgb,var(--danger) 9%,var(--surface2))}
.c-deeper{border-left-color:#c084fc}
.c-sources{border-left-color:#64748b;font-size:.92rem}

/* tier filtering */
body[data-tier="enterprise"] [data-tier="budget"]{display:none}
body[data-tier="budget"] [data-tier="enterprise"]{display:none}

/* code + copy */
pre{position:relative;background:var(--code-bg);border:1px solid #1c2742;border-radius:10px;
  padding:.9rem 1rem;overflow-x:auto;margin:.7rem 0;font-size:.84rem;line-height:1.55}
pre code{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;color:#cdd9f0;white-space:pre}
:not(pre)>code{background:var(--surface2);border:1px solid var(--border);border-radius:5px;padding:.05em .4em;
  font-family:ui-monospace,Menlo,monospace;font-size:.86em;color:var(--accent)}
.copybtn{position:absolute;top:7px;right:7px;border:1px solid #2a3a5c;background:#16213a;color:#9fb2d4;
  font:inherit;font-size:.72rem;font-weight:600;padding:.18rem .5rem;border-radius:6px;cursor:pointer;opacity:0;transition:.15s}
pre:hover .copybtn{opacity:1}
.copybtn.ok{color:var(--ai);border-color:var(--ai)}
.tok-cmt{color:#5b7290;font-style:italic}.tok-str{color:#9ece6a}.tok-num{color:#ff9e64}
.tok-kw{color:#7aa2f7;font-weight:600}.tok-op{color:#89ddff}

/* tables */
table{border-collapse:collapse;width:100%;margin:.9rem 0;font-size:.9rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--border);padding:.5rem .7rem;text-align:left;vertical-align:top}
th{background:var(--surface2);font-weight:700}
tr:nth-child(even) td{background:color-mix(in srgb,var(--surface2) 45%,transparent)}

/* figures — images auto-fit the column; click to enlarge */
.fig{margin:1.6rem 0;max-width:100%}
.fig-frame{position:relative;border:1px solid var(--border);border-radius:12px;overflow:hidden;
  background:var(--surface);cursor:zoom-in;line-height:0}
.fig-frame img{width:100%;height:auto;display:block}
.fig-zoom{position:absolute;right:8px;bottom:8px;background:rgba(2,6,23,.82);color:#cfe;border:1px solid #2a3a5c;
  font-size:.72rem;font-weight:600;padding:.2rem .5rem;border-radius:6px;opacity:0;transition:.15s;
  pointer-events:none;line-height:1.2}
.fig-frame:hover .fig-zoom,.fig-frame:focus-visible .fig-zoom{opacity:1}
figcaption{font-size:.84rem;color:var(--muted);margin-top:.5rem;line-height:1.5}
.fig-open{margin-left:.4rem}
.figref{font-weight:600;white-space:nowrap}

/* lightbox (click a figure to view it large) */
#lightbox{position:fixed;inset:0;z-index:100;background:rgba(2,6,23,.9);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:3vh 3vw;cursor:zoom-out}
#lightbox[hidden]{display:none}
#lb-img{max-width:96vw;max-height:92vh;width:auto;height:auto;border-radius:10px;
  box-shadow:0 24px 70px rgba(0,0,0,.6)}
#lb-close{position:fixed;top:14px;right:18px;z-index:101;width:42px;height:42px;border-radius:50%;
  border:1px solid #2a3a5c;background:#0c1322;color:#cfe;font-size:1.25rem;cursor:pointer}
#lb-close:hover{background:#16213a}

.foot{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--border);color:var(--muted);font-size:.85rem}

/* responsive */
@media (max-width:980px){
  .layout{grid-template-columns:1fr}
  .toc{display:none}
  .tiers .tier{padding:.3rem .45rem;font-size:.72rem}
  .brand-title,.tiers-label{display:none}
  .logo{height:30px;width:124px}
}