/* ============================================================
   b4Help - Home / landing page
   Brand system per b4helpdesign.md: deep-navy SaaS theme,
   electric-blue + emerald-green accents. Mobile-first.
   ============================================================ */

/* ---------- Design tokens (§1) ---------- */
:root{
  /* Backgrounds */
  --bg:#060d1f;
  --bg-2:#0a1530;
  --navy:#0c1d3d;

  /* Surfaces */
  --surface:#0f1f3d;
  --surface-2:#15264a;
  --surface-3:#1b3057;

  /* Text */
  --text:#eaf1ff;
  --muted:#94a8ca;
  --muted-2:#6f86ab;

  /* Accents - blue */
  --accent:#5b9bff;
  --accent-2:#4f8df9;
  --accent-soft:rgba(91,155,255,.14);

  /* Accents - green */
  --green:#34d399;
  --green-2:#10b981;
  --green-soft:rgba(52,211,153,.13);

  /* Additional accents */
  --teal:#2dd4bf;
  --amber:#fbbf24;
  --red:#f87171;

  /* Borders */
  --border:rgba(124,158,214,.14);
  --border-2:rgba(124,158,214,.26);

  /* Geometry & motion */
  --r:18px;
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* Gradients */
  --grad-blue-text:linear-gradient(110deg,#ffffff 6%,#bcd4ff 46%,#5b9bff 104%);
  --grad-green-text:linear-gradient(110deg,#fff 10%,#a7f3d0 60%,#34d399 105%);
  --grad-duo:linear-gradient(150deg,#4f8df9,#34d399);
  --grad-card:linear-gradient(180deg,#143055,#0c1d3d);
  --grad-band:linear-gradient(180deg,#0c1b38,#0a1428);
  --grad-btn-blue:linear-gradient(180deg,#6ba6ff,#4f8df9);
  --grad-btn-green:linear-gradient(180deg,#3ee0a0,#10b981);

  /* Shadows */
  --sh-card:0 28px 60px -30px rgba(0,0,0,.8);
  --sh-float:0 50px 120px -40px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.03), 0 0 90px -30px rgba(79,141,249,.45);
  --sh-btn-blue:0 8px 28px -8px rgba(79,141,249,.7), inset 0 1px 0 rgba(255,255,255,.35);
  --sh-btn-green:0 8px 28px -8px rgba(16,185,129,.7), inset 0 1px 0 rgba(255,255,255,.35);
  --glow-green:0 0 0 1px rgba(52,211,153,.2), 0 30px 70px -34px rgba(16,185,129,.45);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font:400 16px/1.6 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
/* animated grid + packet background (behind all content) */
#bg-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.7}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;font-family:inherit;background:none}
ul{list-style:none}
h1,h2,h3{font-family:'Space Grotesk','Inter',sans-serif;letter-spacing:-.015em;line-height:1.08}
::selection{background:var(--accent);color:#04122e}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- Type helpers ---------- */
.h-hero{font-size:clamp(36px,6.4vw,72px);font-weight:700;line-height:1.04;letter-spacing:-.02em}
.h-section{font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.08;letter-spacing:-.015em}
.h-3{font-size:clamp(22px,2.6vw,30px);font-weight:600}
.lead{font-size:clamp(17px,2vw,21px);font-weight:400;color:var(--muted);line-height:1.55}
.small{font-size:13.5px;color:var(--muted-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-family:'JetBrains Mono',monospace;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px currentColor;animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.grad-text{color:var(--accent)}
.grad-text.green{color:var(--green)}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-head .lead{margin-top:18px}

/* ---------- Buttons (§5.1) ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:100px;min-height:48px;
  font-family:'Inter',sans-serif;font-weight:600;font-size:16px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease), background .2s;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn-blue{background:var(--grad-btn-blue);color:#04122e;box-shadow:var(--sh-btn-blue)}
.btn-green{background:var(--grad-btn-green);color:#04221a;box-shadow:var(--sh-btn-green)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--border-2);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}

/* ---------- Chips (§5.2) ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:100px;
  background:var(--accent-soft);border:1px solid var(--border-2);
  color:var(--text);font-size:13px;font-weight:500;
}
.chip.green{background:var(--green-soft)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px currentColor}

/* ---------- Header / nav (§5.5) ---------- */
header.site{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(180deg,rgba(13,30,63,.7),rgba(13,30,63,.45));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--border);
}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center}
.brand img{height:30px;width:auto}
nav.links{display:flex;align-items:center;gap:6px}
nav.links a{padding:8px 14px;border-radius:100px;color:var(--muted);font-size:14.5px;font-weight:500;transition:color .2s,background .2s}
nav.links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.menu-btn{display:none;width:44px;height:44px;border-radius:11px;background:rgba(255,255,255,.05);border:1px solid var(--border-2);color:var(--text);align-items:center;justify-content:center}

/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:60;background:rgba(6,13,31,.96);backdrop-filter:blur(10px);display:flex;flex-direction:column;padding:24px;opacity:0;pointer-events:none;transition:opacity .3s}
.drawer.open{opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer a.dlink{font-size:22px;font-weight:600;padding:16px 4px;border-bottom:1px solid var(--border);color:var(--text);font-family:'Space Grotesk',sans-serif}
.drawer .btn{margin-top:26px;width:100%}

/* ---------- Hero (§7.2) ---------- */
.hero{padding:150px 0 70px;position:relative;overflow:hidden}
.hero::before{
  content:'';position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(79,141,249,.18), transparent 70%),
    radial-gradient(40% 40% at 85% 20%, rgba(52,211,153,.12), transparent 70%);
}
.hero-copy{position:relative;z-index:1;max-width:820px;margin:0 auto;text-align:center}
.hero-logo{height:clamp(48px,7vw,76px);width:auto;margin:0 auto 28px;display:block}
.hero h1{margin-top:22px;font-size:clamp(30px,5.4vw,56px);text-wrap:balance}
.hero .lead{margin:24px auto 0;max-width:660px}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.hero-meta{margin-top:28px;display:flex;gap:10px 22px;justify-content:center;flex-wrap:wrap;color:var(--muted-2);font-size:13.5px}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.check{color:var(--green);flex-shrink:0}

/* ---------- Product split sections ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.reverse .split-copy{order:2}
.split.reverse .split-visual{order:1}
.split-copy h3,.split-copy .h-section{margin-top:14px}
.split-copy .lead{margin-top:18px}
.eyebrow.green{color:var(--green)}
.feat-list{margin:24px 0 28px;display:grid;gap:12px}
.feat-list li{display:flex;align-items:flex-start;gap:10px;color:var(--text);font-size:15px}
.feat-list .check{flex-shrink:0;margin-top:3px}

/* AI chat mock (no image dependency) */
.ai-mock{border-radius:18px;border:1px solid var(--border);background:linear-gradient(180deg,#0c1b38,#0a1428);padding:22px;display:flex;flex-direction:column;gap:11px;box-shadow:var(--sh-float)}
.ai-mock .bubble{padding:12px 15px;border-radius:14px;font-size:14px;line-height:1.45;max-width:88%}
.ai-mock .you{align-self:flex-end;background:var(--surface-2);border:1px solid var(--border-2)}
.ai-mock .ai{align-self:flex-start;background:rgba(79,141,249,.12);border:1px solid rgba(79,141,249,.25)}
.ai-mock .ai b{color:var(--green)}
.ai-mock .stamp{margin-top:6px;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--muted-2);text-align:right}

/* PortCRM CSS visual (no photos) */
.crm-visual{border-radius:18px;overflow:hidden;border:1px solid var(--border-2);background:linear-gradient(180deg,#0c1b38,#0a1428);box-shadow:var(--sh-float)}
.crm-bar{display:flex;align-items:center;gap:8px;padding:11px 16px;background:#0a1730;border-bottom:1px solid var(--border)}
.crm-bar i{width:11px;height:11px;border-radius:50%;background:#2b3d63;display:block}
.crm-bar i:nth-child(1){background:#ff5f57}.crm-bar i:nth-child(2){background:#febc2e}.crm-bar i:nth-child(3){background:#28c840}
.crm-bar span{margin-left:14px;font-size:12px;color:var(--muted-2);font-family:'JetBrains Mono',monospace}
.crm-body{padding:34px 30px}
.crm-lock{width:64px;height:64px;border-radius:16px;margin:0 auto 22px;display:grid;place-items:center;background:var(--green-soft);border:1px solid rgba(52,211,153,.3);color:var(--green)}
.crm-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.crm-stats div{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;text-align:center}
.crm-stats b{display:block;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:24px;color:var(--text)}
.crm-stats span{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.12em;color:var(--muted-2)}
.crm-note{margin-top:18px;text-align:center;font-size:12.5px;color:var(--green);font-family:'JetBrains Mono',monospace}

/* ---------- Stat cluster (§5.4) ---------- */
.stats{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(12,27,56,.82),rgba(10,20,40,.82))}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:clamp(34px,4.6vw,52px);color:var(--accent);line-height:1}
.stat .label{margin-top:8px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);font-family:'JetBrains Mono',monospace}

/* ---------- About / band sections ---------- */
.about{background:rgba(10,21,48,.78)}
.about-highlights{margin:8px auto 0;max-width:820px;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.about-highlights li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text);justify-content:center;text-align:center}
.about-highlights svg{color:var(--green);flex-shrink:0}

/* ---------- Testimonials ---------- */
.t-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.t-card{background:var(--grad-card);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--r);padding:26px;box-shadow:var(--sh-card);transition:transform .25s var(--ease),border-color .25s var(--ease)}
.t-card:hover{transform:translateY(-4px)}
.t-card .quote{color:rgba(91,155,255,.3);margin-bottom:14px}
.t-card p{color:var(--muted);font-size:14.5px;line-height:1.7;font-style:italic}
.t-card .who{margin-top:18px}
.t-card .name{font-weight:700;color:var(--text);font-size:14.5px;font-style:normal}
.t-card .role{color:var(--muted-2);font-size:12.5px;margin-top:2px}

/* ---------- Blog callout ---------- */
.blog-cta{display:flex;align-items:center;gap:28px;border:1px solid var(--border);border-radius:var(--r);
  padding:30px 34px;background:linear-gradient(180deg,rgba(21,38,74,.45),rgba(15,31,61,.35));box-shadow:var(--sh-card)}
.blog-icon{flex-shrink:0;width:60px;height:60px;border-radius:16px;display:grid;place-items:center;
  background:var(--accent-soft);border:1px solid var(--border-2);color:var(--accent)}
.blog-text{flex:1;min-width:0}
.blog-text h2{color:var(--text)}
.blog-text p{color:var(--muted);font-size:15px;line-height:1.6;margin-top:10px;max-width:62ch}
.blog-cta .btn{flex-shrink:0}
@media (max-width:760px){
  .blog-cta{flex-direction:column;align-items:flex-start;gap:20px}
  .blog-cta .btn{width:100%}
}

/* ---------- Final CTA ---------- */
.final{background:linear-gradient(180deg,rgba(12,27,56,.82),rgba(10,20,40,.82));border-top:1px solid var(--border)}
.final .inner{max-width:720px;margin:0 auto;text-align:center}
.final .lead{margin:18px auto 0;max-width:560px}
.final .hero-cta{margin-top:32px}

/* ---------- Newsletter ---------- */
.news{margin-top:48px;border-radius:var(--r);border:1px solid var(--border);padding:38px 40px;
  background:linear-gradient(180deg,rgba(21,38,74,.45),rgba(15,31,61,.35));
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;text-align:left}
.news-copy h3{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.news-copy p{color:var(--muted);font-size:15.5px;line-height:1.6;margin:0;max-width:420px}
.news-form{width:100%}
.news-form .ml-embedded{margin:0}
@media (max-width:860px){
  .news{grid-template-columns:1fr;gap:24px;text-align:center}
  .news-copy p{margin:0 auto}
}

/* ---------- Footer (§5.6) ---------- */
footer.site{background:linear-gradient(180deg,rgba(12,27,56,.84),rgba(10,20,40,.9));border-top:1px solid var(--border);padding:56px 0 64px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand img{height:34px;margin-bottom:16px}
.foot-brand p{color:var(--muted);font-size:14px;max-width:30ch}
.foot-brand .nap{margin-top:16px;color:var(--muted-2);font-size:13px;line-height:1.7}
.foot-brand .nap a{color:var(--accent)}
.foot-col h4{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text);margin-bottom:14px;font-family:'JetBrains Mono',monospace}
.foot-col a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--text)}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;color:var(--muted-2);font-size:13px}
.foot-bottom a{color:var(--accent)}
.foot-legal{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ---------- Reveal motion (§6) ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.visible{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.06s}
.reveal[data-d="2"]{transition-delay:.12s}
.reveal[data-d="3"]{transition-delay:.18s}
.reveal[data-d="4"]{transition-delay:.24s}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:980px){
  .split{grid-template-columns:1fr;gap:36px}
  .split.reverse .split-copy{order:1}
  .split.reverse .split-visual{order:2}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:860px){
  section{padding:64px 0}
  .hero{padding:120px 0 50px}
  nav.links{display:none}
  .menu-btn{display:inline-flex}
  .t-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}
}
@media (max-width:600px){
  .wrap{padding:0 18px}
  .hero-cta .btn{width:100%}
  .about-highlights{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{justify-content:center;text-align:center}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}