/* =====================================================================
   ProChat — shared design system (brand.css)
   One source of truth for colors, type, spacing, and components so every
   page (landing, features, industries, blog) stays visually consistent.
   Link it with:  <link rel="stylesheet" href="/brand.css">
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root{
  /* Brand */
  --brand:#E85D38; --brand-2:#E1502A; --brand-3:#FB7551; --brand-ink:#B5431F;
  --grad:linear-gradient(135deg,#FB7551 0%,#E1502A 100%);
  /* Ink & surfaces */
  --ink:#1f1b2e; --body:#56516b; --muted:#9a96ab;
  --line:#f0e8e3; --bg:#ffffff; --soft:#faf7f5; --warm:#fff4ef; --warm2:#fdeae2;
  --ok:#16a34a; --ok-bg:#e7f7ee;
  /* Type scale */
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --h1:clamp(34px,5vw,56px); --h2:clamp(26px,3.6vw,40px); --h3:21px; --lead:clamp(17px,2vw,20px);
  /* Spacing & shape */
  --container:1160px;
  --radius:20px; --radius-sm:13px; --radius-lg:24px;
  --sh-sm:0 10px 26px -14px rgba(31,27,46,.28);
  --sh:0 30px 70px -28px rgba(225,80,42,.4);
  --sh-card:0 20px 46px -30px rgba(31,27,46,.45);
}

/* ---------- reset / base ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--body);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{color:var(--ink);line-height:1.12;letter-spacing:-.03em;font-weight:800}
h1{font-size:var(--h1);font-weight:900}
h2{font-size:var(--h2)}
h3{font-size:var(--h3)}

/* ---------- layout ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 52px}
.sec-head h2{margin:12px 0}
.sec-head p{font-size:17px}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:920px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ---------- eyebrow / badges ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--warm);color:var(--brand-ink);font-weight:700;font-size:12px;letter-spacing:.05em;text-transform:uppercase;padding:7px 14px;border-radius:30px;border:1px solid var(--warm2)}
.eyebrow .pulse{width:7px;height:7px;border-radius:50%;background:var(--brand);animation:pc-pls 2s infinite}
@keyframes pc-pls{0%{box-shadow:0 0 0 0 rgba(232,93,56,.5)}70%{box-shadow:0 0 0 7px rgba(232,93,56,0)}100%{box-shadow:0 0 0 0 rgba(232,93,56,0)}}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;border-radius:var(--radius-sm);padding:13px 22px;cursor:pointer;border:1px solid transparent;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s;white-space:nowrap;font-family:inherit}
.btn.primary{background:var(--grad);color:#fff;box-shadow:0 12px 28px -10px rgba(225,80,42,.7)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -10px rgba(225,80,42,.8)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand-ink)}
.btn.lg{padding:16px 30px;font-size:16px}

/* ---------- cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .18s,box-shadow .18s,border-color .18s}
.card.hover:hover{transform:translateY(-5px);box-shadow:var(--sh-sm);border-color:var(--warm2)}
.icon-tile{width:50px;height:50px;border-radius:14px;background:var(--warm);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.icon-tile svg{width:25px;height:25px}

/* ---------- site nav (shared header) ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(1.8) blur(16px);-webkit-backdrop-filter:saturate(1.8) blur(16px);border-bottom:1px solid var(--line)}
.site-nav .bar{max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px;color:var(--ink);letter-spacing:-.03em}
.brand .mark{width:34px;height:34px;border-radius:11px;background:var(--grad);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px -6px rgba(225,80,42,.7)}
.navlinks{display:flex;align-items:center;gap:26px}
.navlinks a.lnk{font-weight:600;color:var(--body);font-size:15px}
.navlinks a.lnk:hover{color:var(--brand-ink)}
/* mobile hamburger (button injected by nav.js) */
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:11px;color:var(--ink);cursor:pointer;flex:none}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-ink)}
@media(max-width:860px){
  .nav-toggle{display:inline-flex}
  .navlinks a.lnk{display:none}
  .site-nav.nav-open .navlinks{position:absolute;top:67px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-sm);padding:8px 0 14px}
  .site-nav.nav-open .navlinks a.lnk{display:block;padding:13px 24px;font-size:16px}
  .site-nav.nav-open .navlinks a.btn{margin:10px 24px 2px;justify-content:center}
}

/* ---------- site footer (shared) ---------- */
.site-footer{border-top:1px solid var(--line);padding:50px 0 42px;color:var(--muted)}
.site-footer .cols{max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}
.site-footer .foot-links{display:flex;gap:26px;flex-wrap:wrap}
.site-footer .foot-links a{font-size:14.5px;color:var(--body)}
.site-footer .foot-links a:hover{color:var(--brand-ink)}
.site-footer .foot-bottom{max-width:var(--container);margin:30px auto 0;padding:22px 24px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px}

/* ---------- cta band ---------- */
.cta-band{background:var(--grad);border-radius:28px;padding:58px 40px;text-align:center;color:#fff;box-shadow:var(--sh);position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(600px 300px at 80% -40%,rgba(255,255,255,.18),transparent 60%)}
.cta-band h2{color:#fff;position:relative}
.cta-band p{color:rgba(255,255,255,.94);font-size:18px;margin:12px 0 28px;position:relative}
.cta-band .btn{position:relative}
.cta-band .btn.primary{background:#fff;color:var(--brand-ink);box-shadow:0 12px 30px -8px rgba(0,0,0,.3)}
.cta-band .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta-band .btn.ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- reveal-on-scroll (enhancement only; visible without JS) ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1!important;transform:none!important}}