/* ============================================================================
   AquaCalc for Business landing (/for-business)
   Loaded on top of public.css via page_head()'s $extra_css slot. Reuses the
   public design tokens (--card, --blue, --border, --text, --muted, --bg2 …)
   and adds only a few local extras — it never redefines :root, so the shared
   nav and footer stay identical to the rest of the site.
   ========================================================================== */
.fb{
  --fb-grad:linear-gradient(135deg,#58a6ff 0%,#33c3a3 55%,#1d9e75 100%);
  --fb-grad-soft:linear-gradient(135deg,rgba(88,166,255,.16),rgba(29,158,117,.16));
  --fb-faint:#6b7683;
  --fb-shadow:0 10px 30px -12px rgba(0,0,0,.6);
  --fb-shadow-lg:0 24px 60px -20px rgba(0,0,0,.7);
  max-width:1080px;margin:0 auto;padding:8px 22px 80px;
}
.fb .grad{background:var(--fb-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* Text links use the brand blue — but never restyle the button-styled anchors. */
.fb a:not(.fb-btn),.fb a:not(.fb-btn):visited,.fb a:not(.fb-btn):hover{color:var(--blue)}

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.fb-hero{text-align:center;padding:30px 0 6px}
.fb-h1{font-size:clamp(2rem,5.2vw,3.2rem);font-weight:800;letter-spacing:-.03em;line-height:1.06;margin:14px auto 16px;max-width:17ch;color:var(--text)}
.fb-sub{color:var(--text2);font-size:clamp(1rem,2.3vw,1.18rem);max-width:54ch;margin:0 auto 24px;line-height:1.6}
.fb-cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;align-items:center}
.fb-microtrust{color:var(--fb-faint);font-size:.82rem;margin-top:14px}

.fb-pill{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:600;color:var(--green);border:1px solid rgba(63,185,80,.4);background:rgba(63,185,80,.09);border-radius:20px;padding:5px 13px}
.fb-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--green)}

.fb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;font-family:inherit;font-weight:700;font-size:1rem;letter-spacing:-.01em;padding:14px 26px;border-radius:12px;border:0;color:#04121a;background:var(--fb-grad);box-shadow:0 8px 24px -8px rgba(29,158,117,.55);transition:transform .12s ease,box-shadow .12s ease;text-decoration:none}
.fb-btn:hover,.fb-btn:visited{color:#04121a;text-decoration:none}
.fb-btn:hover{transform:translateY(-1px);box-shadow:0 12px 30px -8px rgba(29,158,117,.7)}
.fb-btn.ghost{background:var(--card);color:var(--text);border:1px solid var(--border2);box-shadow:none}
.fb-btn.ghost:hover,.fb-btn.ghost:visited{color:var(--text)}
.fb-btn.full{width:100%}
.fb-btn.is-busy{opacity:.85;cursor:progress}

/* ── Product window mockup (dark, to match the site) ───────────────────────── */
.fb-window{max-width:820px;margin:40px auto 0;border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--fb-shadow-lg);background:var(--card)}
.fb-winbar{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--border);background:var(--bg2)}
.fb-winbar .d{width:11px;height:11px;border-radius:50%;background:#30363d}
.fb-url{margin-left:8px;font-size:.78rem;color:var(--muted);background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:4px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.fb-winbody{display:grid;grid-template-columns:1.15fr .85fr;background:#0f141c;color:var(--text2);text-align:left}
.fb-shop{padding:26px 24px;border-right:1px solid var(--border)}
.fb-shop-tag{font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:700}
.fb-shop h4{font-size:1.15rem;margin:6px 0 8px;color:var(--text);font-weight:800;letter-spacing:-.01em}
.fb-shop p{font-size:.86rem;color:var(--muted);line-height:1.6;margin:0}
.fb-embed{padding:20px;background:#0b0f16;display:flex;align-items:center}
.fb-embed-card{background:var(--card);border:1px solid var(--border2);border-radius:12px;padding:14px;width:100%}
.fb-embed-row{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--text2);margin-bottom:8px}
.fb-embed-row .box{border:1px solid var(--border2);border-radius:7px;padding:3px 10px;background:var(--bg2)}
.fb-embed-res{border-top:1px solid var(--border);margin-top:6px;padding-top:12px;text-align:center}
.fb-embed-res .big{font-size:1.8rem;font-weight:800;color:var(--blue);line-height:1}
.fb-embed-res .sub{font-size:.72rem;color:var(--muted);margin-top:3px}
.fb-embed-pb{text-align:center;font-size:.64rem;color:var(--fb-faint);margin-top:9px}

/* ── Sections ──────────────────────────────────────────────────────────────── */
.fb-eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.fb-section{padding:48px 0 6px;text-align:center}
.fb-h2{font-size:clamp(1.5rem,3.6vw,2.1rem);font-weight:800;letter-spacing:-.02em;margin:6px 0 8px;color:var(--text)}
.fb-lead{color:var(--muted);max-width:50ch;margin:0 auto 26px;font-size:1.02rem}
.fb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;text-align:left}
.fb-benefit{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px;box-shadow:var(--fb-shadow)}
.fb-benefit .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--fb-grad-soft);border:1px solid var(--border2);color:var(--blue);margin-bottom:14px}
.fb-benefit .ic svg{width:22px;height:22px}
.fb-benefit h3{font-size:1.06rem;font-weight:700;margin:0 0 5px;letter-spacing:-.01em;color:var(--text)}
.fb-benefit p{color:var(--muted);font-size:.92rem;margin:0;line-height:1.6}

.fb-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;text-align:left}
.fb-step{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px}
.fb-stepnum{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:1.1rem;color:#04121a;background:var(--fb-grad);margin-bottom:14px}
.fb-step h3{font-size:1.05rem;font-weight:700;margin:0 0 5px;color:var(--text)}
.fb-step p{color:var(--muted);font-size:.92rem;margin:0;line-height:1.6}

/* ── Final CTA + form ──────────────────────────────────────────────────────── */
.fb-final{background:radial-gradient(600px 300px at 12% 0,rgba(88,166,255,.15),transparent 60%),radial-gradient(500px 300px at 100% 100%,rgba(29,158,117,.16),transparent 55%),var(--card);
  border:1px solid var(--border);border-radius:22px;padding:40px;margin-top:52px;display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;box-shadow:var(--fb-shadow-lg)}
.fb-final-copy h2{font-size:1.9rem;font-weight:800;letter-spacing:-.02em;margin:8px 0 10px;color:var(--text)}
.fb-final-copy .lead{color:var(--text2);font-size:1.02rem;margin:0 0 16px}
.fb-check{display:flex;align-items:center;gap:10px;color:var(--text2);font-size:.95rem;margin:8px 0}
.fb-check svg{width:18px;height:18px;color:var(--green);flex:0 0 auto}
.fb-formcard{background:var(--bg2);border:1px solid var(--border2);border-radius:16px;padding:24px}

/* form layout (no inline styles in the page) */
.fb-form button[type=submit]{margin-top:16px}
.fb-field{margin-top:12px}
.fb-grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.fb-hp{position:absolute;left:-9999px}
.fb-choices{display:flex;gap:16px;flex-wrap:wrap;margin-top:4px}
.fb-choices label{display:flex;gap:7px;align-items:center;font-size:.92rem;color:var(--text2);cursor:pointer}
.fb-agree{display:flex;gap:9px;align-items:flex-start;margin-top:16px;font-size:.9rem;color:var(--text2);line-height:1.5;cursor:pointer}
.fb-agree input{margin-top:3px;flex:0 0 auto}
.fb-center{text-align:center}
.fb-received h2{font-size:1.3rem;font-weight:800;margin:0 0 6px;color:var(--text)}
.fb-received p{margin:0 0 16px}
.fb-label{display:block;font-size:.8rem;font-weight:600;color:var(--muted);margin:0 0 6px}
.fb-input{width:100%;padding:11px 13px;border-radius:11px;border:1px solid var(--border2);background:var(--card);color:var(--text);font-size:1rem;font-family:inherit}
.fb-input:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(88,166,255,.18)}
.fb-count{font-size:.78rem;color:var(--fb-faint);margin:6px 2px 0}
.fb-err{color:#f85149;font-size:.85rem;margin-top:8px}
.fb-note{color:var(--muted);font-size:.82rem;margin-top:12px}
.fb-sent{display:flex;gap:12px;align-items:flex-start;padding:15px;border-radius:12px;background:rgba(63,185,80,.08);border:1px solid rgba(63,185,80,.3);color:var(--text2)}
.fb-sent svg{width:22px;height:22px;color:var(--green);flex:0 0 auto;margin-top:1px}
.fb-spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(4,18,26,.35);border-top-color:#04121a;border-radius:50%;vertical-align:-2px;margin-right:6px;animation:fbspin .7s linear infinite}
@keyframes fbspin{to{transform:rotate(360deg)}}

@media(max-width:820px){
  .fb-winbody{grid-template-columns:1fr}
  .fb-shop{border-right:0;border-bottom:1px solid var(--border)}
  .fb-grid,.fb-steps{grid-template-columns:1fr}
  .fb-final{grid-template-columns:1fr;padding:26px}
}
@media(hover:none)and(pointer:coarse){.fb-input{font-size:1rem}}