/* ============================================================
   deepai.css — shared Deep AI Consulting theme (neutral/blue).
   Used by the corporate secondary pages: /terms, /privacy-policy,
   /blog and every blog post. The homepage (index.html) keeps its
   own self-contained inline styles; this mirrors that theme so the
   pages match without duplicating the whole homepage on each file.
   ============================================================ */

:root{
  --paper:#faf8f4; --ink:#16181c; --ink-faint:#8b8f97;
  --maxw:1140px; --readw:720px; --gutter:clamp(1.25rem,4vw,4rem);
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow:0 1px 0 rgba(255,255,255,.6) inset, 0 22px 50px -28px rgba(22,24,28,.4);
  --background:oklch(1 0 0); --foreground:oklch(0.145 0 0);
  --card:oklch(1 0 0); --muted:oklch(0.97 0 0); --muted-foreground:oklch(0.556 0 0);
  --border:oklch(0.922 0 0); --primary:oklch(0.205 0 0); --primary-foreground:oklch(0.985 0 0);
  --secondary:oklch(0.97 0 0);
  --accent-blue:oklch(0.55 0.22 263);
  --radius:1rem;
  --font-sans:"DM Sans",ui-sans-serif,system-ui,sans-serif;
  --font-mono-g:"Geist Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--foreground);background:var(--background);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img{max-width:100%;height:auto}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
h1,h2,h3,h4{font-family:var(--font-sans);font-weight:700;letter-spacing:-.025em;line-height:1.12}
.kick{font-family:var(--font-mono-g);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-foreground)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--font-sans);font-weight:600;font-size:1rem;padding:.85em 1.45em;border:1px solid var(--border);border-radius:.7rem;background:var(--primary);color:var(--primary-foreground);text-decoration:none;cursor:pointer;transition:transform .2s var(--ease),background .25s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn--ghost{background:var(--background);border:1px solid var(--border);color:var(--foreground)}
.btn--ghost:hover{background:var(--muted)}

/* book-a-call button (anchor to /#book — no modal on secondary pages) */
.book-call{position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:.7rem;padding:.9rem 1.55rem;border-radius:.85rem;
  background:linear-gradient(90deg,oklch(0.55 0.22 263),oklch(0.49 0.22 264));color:#fff;
  font-family:var(--font-sans);font-weight:600;font-size:1.05rem;text-decoration:none;
  border:1px solid oklch(0.55 0.22 263/.3);box-shadow:0 12px 24px -10px oklch(0.49 0.22 264/.6);
  transition:background .3s ease,box-shadow .3s ease,transform .15s ease}
.book-call:hover{background:linear-gradient(90deg,oklch(0.49 0.22 264),oklch(0.42 0.18 266));box-shadow:0 16px 30px -10px oklch(0.42 0.18 266/.6)}
.book-call:active{transform:scale(.97)}
.book-call__icon{position:relative;width:20px;height:20px;flex:none}
.book-call__icon svg{position:absolute;left:0;top:0;width:20px;height:20px;transition:transform .35s cubic-bezier(.3,1.3,.5,1),opacity .35s ease}
.book-call__icon svg:nth-child(2){transform:translateY(18px);opacity:0}
.book-call:hover .book-call__icon svg:nth-child(1){transform:translateY(-18px);opacity:0}
.book-call:hover .book-call__icon svg:nth-child(2){transform:translateY(0);opacity:1}
.book-call__t{transition:transform .3s ease}
.book-call:hover .book-call__t{transform:translateX(3px)}
.book-call__shine{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);transform:skewX(-12deg) translateX(-160%);transition:transform .9s ease}
.book-call:hover .book-call__shine{transform:skewX(-12deg) translateX(160%)}
.book-call--sm{padding:.55rem 1rem;font-size:.9rem;border-radius:.6rem;gap:.5rem;box-shadow:0 8px 18px -8px oklch(0.49 0.22 264/.55)}
.book-call--sm .book-call__icon,.book-call--sm .book-call__icon svg{width:17px;height:17px}

/* header */
.site-hd{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--background) 80%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.site-hd__in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem var(--gutter);max-width:var(--maxw);margin:0 auto}
.site-hd__brand{display:inline-flex;align-items:center;text-decoration:none}
.site-hd__brand img{height:56px;width:auto;display:block}
@media(max-width:480px){.site-hd__brand img{height:44px}}
.site-hd__nav{display:flex;align-items:center;gap:clamp(1rem,2.4vw,1.9rem)}
.site-hd__nav a.lnk{font-weight:600;font-size:.92rem;color:var(--muted-foreground);text-decoration:none}
.site-hd__nav a.lnk:hover{color:var(--foreground)}
.site-hd__right{display:flex;align-items:center;gap:.55rem}
.site-hd__toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;flex:none;border:1px solid var(--border);border-radius:.6rem;background:var(--background);color:var(--foreground);cursor:pointer;transition:background .2s}
.site-hd__toggle:hover{background:var(--muted)}
@media(max-width:720px){
  .site-hd__toggle{display:inline-flex}
  .site-hd__nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--background);border-bottom:1px solid var(--border);box-shadow:0 18px 40px -24px rgba(22,24,28,.35);padding:0 var(--gutter);max-height:0;overflow:hidden;opacity:0;visibility:hidden;transition:max-height .32s var(--ease),opacity .24s var(--ease),padding .32s var(--ease)}
  .site-hd__nav.is-open{max-height:80vh;opacity:1;visibility:visible;padding:.4rem var(--gutter) 1rem}
  .site-hd__nav a.lnk{font-size:1.02rem;padding:.9rem .1rem;border-bottom:1px solid var(--border)}
}

/* page hero (legal + blog headers) */
.page-hero{padding:clamp(2.6rem,6vw,4.5rem) 0 clamp(1.6rem,3vw,2.4rem);border-bottom:1px solid var(--border);background:linear-gradient(180deg,var(--muted),var(--background))}
.page-hero .kick{display:block;margin-bottom:.9rem}
.page-hero h1{font-size:clamp(2.1rem,5.4vw,3.4rem);letter-spacing:-.04em;max-width:20ch}
.page-hero__sub{margin-top:1rem;color:var(--muted-foreground);font-size:1.12rem;max-width:56ch}
.page-hero__meta{margin-top:1.1rem;font-family:var(--font-mono-g);font-size:.76rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted-foreground)}
.crumb{display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;color:var(--muted-foreground);text-decoration:none;margin-bottom:1.4rem}
.crumb:hover{color:var(--foreground)}

/* prose — legal pages + article body */
.prose{max-width:var(--readw);margin:0 auto;padding:clamp(2.4rem,5vw,3.6rem) var(--gutter) clamp(3rem,6vw,5rem)}
.prose > *+*{margin-top:1.15rem}
.prose h2{font-size:clamp(1.4rem,3vw,1.9rem);margin-top:2.6rem;letter-spacing:-.02em}
.prose h3{font-size:1.2rem;margin-top:1.9rem}
.prose p,.prose li{color:var(--ink);font-size:1.06rem;line-height:1.7}
.prose ul,.prose ol{padding-left:1.3rem}
.prose li{margin-top:.5rem}
.prose li::marker{color:var(--accent-blue)}
.prose a{color:var(--accent-blue);text-decoration:underline;text-underline-offset:2px}
.prose a:hover{text-decoration:none}
.prose strong{color:var(--foreground)}
.prose blockquote{margin:1.6rem 0;padding:1rem 1.3rem;border-left:3px solid var(--accent-blue);background:var(--muted);border-radius:0 .6rem .6rem 0;font-style:italic;color:var(--ink)}
.prose hr{border:0;border-top:1px solid var(--border);margin:2.4rem 0}
.prose img{display:block;margin:1.6rem auto;border:1px solid var(--border);border-radius:.7rem}
.prose code{font-family:var(--font-mono-g);font-size:.9em;background:var(--muted);border:1px solid var(--border);border-radius:.4rem;padding:.1em .4em}
.callout{margin:1.6rem 0;padding:1.15rem 1.35rem;border:1px solid var(--border);background:var(--muted);border-radius:.8rem;font-size:1rem;color:var(--ink)}
.callout strong{color:var(--foreground)}

/* blog index */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;padding:clamp(2.4rem,5vw,3.4rem) 0 clamp(3rem,6vw,5rem)}
@media(max-width:900px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.post-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;gap:.75rem;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem 1.5rem;text-decoration:none;color:inherit;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post-card__tag{align-self:flex-start;font-family:var(--font-mono-g);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-blue);border:1px solid var(--border);border-radius:999px;padding:.28rem .7rem}
.post-card h2{font-size:1.28rem;line-height:1.24;margin-top:.2rem}
.post-card p{color:var(--muted-foreground);font-size:.98rem;line-height:1.55}
.post-card__meta{margin-top:auto;font-family:var(--font-mono-g);font-size:.72rem;letter-spacing:.03em;color:var(--muted-foreground)}
.post-card__more{font-weight:600;font-size:.92rem;color:var(--accent-blue)}
.blog-empty{max-width:var(--readw);margin:0 auto;padding:clamp(2rem,5vw,3rem) var(--gutter);color:var(--muted-foreground)}

/* article footer CTA */
.article-cta{max-width:var(--readw);margin:0 auto clamp(3rem,6vw,5rem);padding:clamp(1.8rem,4vw,2.6rem);background:var(--muted);border:1px solid var(--border);border-radius:var(--radius);text-align:center}
.article-cta h3{font-size:clamp(1.3rem,3vw,1.7rem)}
.article-cta p{margin:.7rem auto 1.4rem;max-width:44ch;color:var(--muted-foreground)}
.article-cta .book-call{margin:0 auto}

/* footer */
.site-ft{margin-top:2rem;background:var(--secondary);border-top:1px solid var(--border)}
.site-ft__in{max-width:var(--maxw);margin:0 auto;padding:clamp(2.6rem,5vw,4rem) var(--gutter) 1.8rem}
.site-ft__brand img{height:32px;width:auto;display:block}
.site-ft__nav{display:flex;flex-wrap:wrap;gap:.6rem 1.6rem;margin-top:1.6rem}
.site-ft__nav a{color:var(--muted-foreground);text-decoration:none;font-size:.92rem;transition:color .2s}
.site-ft__nav a:hover{color:var(--foreground)}
.site-ft__bottom{margin-top:2.4rem;border-top:1px solid var(--border);padding-top:1.4rem;display:flex;flex-direction:column;gap:.3rem;font-size:.85rem;color:var(--muted-foreground)}
@media(min-width:640px){.site-ft__bottom{flex-direction:row;justify-content:space-between;align-items:center}}

@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}