/* maildome marketing site -- reuses the portal "Signal" dark design tokens. */
:root{
  --bg:#0a0e13; --bg-2:#0d1219; --surface:#121922; --surface-2:#161f2a; --surface-3:#1c2733;
  --border:#233040; --border-soft:#1a2430; --text:#e7eef6; --text-dim:#aab7c6; --text-mute:#6b7a8d;
  --accent:#2ee6a6; --accent-2:#13c4c4; --accent-ink:#052b20; --accent-glow:rgba(46,230,166,.16);
  --radius:14px; --radius-sm:10px; --radius-pill:999px; --maxw:1080px;
  --font-display:"Bricolage Grotesque","Hanken Grotesk",ui-sans-serif,system-ui,sans-serif;
  --font-body:"Hanken Grotesk",ui-sans-serif,system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.6;
  -webkit-font-smoothing:antialiased;font-size:16px}
a{color:var(--accent);text-decoration:none}
code{font-family:var(--font-mono);font-size:.9em}
.grad{background:linear-gradient(120deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--text-mute)}
.small{font-size:.85rem}

/* --- topbar --- */
.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:.85rem clamp(1rem,4vw,2.5rem);background:rgba(10,14,19,.8);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft)}
.brand{display:inline-flex;align-items:center;gap:.55rem;color:var(--text);font-family:var(--font-display);
  font-weight:700;font-size:1.25rem;letter-spacing:-.02em}
.brand b{font-weight:700}
.brand .mark{width:30px;height:30px}
.brand.small{font-size:1.05rem}.brand.small .mark{width:24px;height:24px}
.topnav{display:flex;align-items:center;gap:1.25rem}
.topnav a:not(.btn){color:var(--text-dim);font-weight:500;font-size:.95rem}
.topnav a:not(.btn):hover{color:var(--text)}

/* --- buttons --- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--font-body);
  font-weight:600;font-size:.95rem;padding:.6rem 1.1rem;border-radius:var(--radius-sm);border:1px solid transparent;
  cursor:pointer;transition:transform .08s ease,box-shadow .15s ease,background .15s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:var(--accent-ink);
  box-shadow:0 6px 20px -8px var(--accent)}
.btn-ghost{background:var(--surface-2);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface-3)}
.btn-lg{padding:.8rem 1.5rem;font-size:1.05rem}
.btn-block{display:flex;width:100%}

/* --- layout --- */
main{display:block}
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(3rem,8vw,6rem) clamp(1rem,4vw,2rem)}
.section.alt{max-width:none;background:var(--bg-2);border-block:1px solid var(--border-soft)}
.section.alt>*{max-width:var(--maxw);margin-inline:auto}
.eyebrow{color:var(--accent);font-weight:600;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:.6rem}
.section-head{text-align:center;margin-bottom:2.5rem}
.section-head h2{font-family:var(--font-display);font-size:clamp(1.7rem,4vw,2.4rem);margin:.2rem 0;letter-spacing:-.02em}
.section-head .sub{color:var(--text-dim);max-width:46ch;margin:.4rem auto 0}

/* --- hero --- */
.hero{position:relative;max-width:var(--maxw);margin:0 auto;padding:clamp(3.5rem,10vw,7rem) clamp(1rem,4vw,2rem) 4rem;text-align:center;overflow:hidden}
.hero .grid-bg{position:absolute;inset:0;z-index:-1;
  background:radial-gradient(60% 50% at 50% 0%,var(--accent-glow),transparent 70%),
  linear-gradient(var(--border-soft) 1px,transparent 1px) 0 0/100% 44px,
  linear-gradient(90deg,var(--border-soft) 1px,transparent 1px) 0 0/44px 100%;
  mask-image:radial-gradient(70% 60% at 50% 10%,#000,transparent);opacity:.5}
.hero h1{font-family:var(--font-display);font-weight:700;font-size:clamp(2.2rem,6vw,3.8rem);line-height:1.05;
  letter-spacing:-.03em;margin:.4rem 0 1rem}
.lede{color:var(--text-dim);font-size:clamp(1.02rem,2.2vw,1.2rem);max-width:60ch;margin:0 auto 2rem}
.cta-row{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.host-chip{display:inline-flex;align-items:center;gap:.6rem;flex-wrap:wrap;justify-content:center;margin-top:2.2rem;
  padding:.55rem .9rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-pill);font-size:.9rem}
.host-chip .label{color:var(--text-mute);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase}
.host-chip code{color:var(--accent)}

/* --- feature cards --- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem}
.card:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.card .ic{font-size:1.4rem;color:var(--accent);margin-bottom:.5rem}
.card h3{font-family:var(--font-display);font-size:1.15rem;margin:.2rem 0 .4rem}
.card p{color:var(--text-dim);font-size:.95rem;margin:0}
.card code{color:var(--accent-2)}

/* --- steps --- */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.2rem;counter-reset:s}
.steps li{display:flex;gap:1rem;align-items:flex-start}
.steps .n{flex:none;width:2.2rem;height:2.2rem;display:grid;place-items:center;border-radius:var(--radius-pill);
  background:var(--accent-glow);color:var(--accent);font-family:var(--font-display);font-weight:700}
.steps h3{font-family:var(--font-display);font-size:1.1rem;margin:.15rem 0 .25rem}
.steps p{color:var(--text-dim);font-size:.93rem;margin:0}

/* --- pricing --- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem;align-items:start}
.plan{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 1.3rem;display:flex;flex-direction:column;gap:1rem}
.plan.featured{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.plan .badge{position:absolute;top:-.7rem;left:50%;transform:translateX(-50%);background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:var(--accent-ink);font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.25rem .7rem;border-radius:var(--radius-pill)}
.plan .pname{font-family:var(--font-display);font-weight:700;font-size:1.2rem}
.plan .price{font-family:var(--font-display);font-weight:700;font-size:2.2rem;letter-spacing:-.02em}
.plan .price span{font-size:.9rem;color:var(--text-mute);font-weight:500}
.plan ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem;flex:1}
.plan li{color:var(--text-dim);font-size:.92rem;padding-left:1.4rem;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}

/* --- cta band + footer --- */
.cta-band{text-align:center;padding:clamp(3rem,8vw,5rem) 1rem;
  background:radial-gradient(60% 120% at 50% 0%,var(--accent-glow),transparent 70%)}
.cta-band h2{font-family:var(--font-display);font-size:clamp(1.6rem,4vw,2.2rem);margin:0 0 .4rem}
.cta-band p{color:var(--text-dim);margin:0 0 1.5rem}
.foot{max-width:var(--maxw);margin:0 auto;padding:2.5rem clamp(1rem,4vw,2rem);display:flex;flex-wrap:wrap;
  gap:1rem;align-items:center;justify-content:space-between;border-top:1px solid var(--border-soft)}
.foot-links{display:flex;gap:1.2rem}
.foot-links a{color:var(--text-dim);font-size:.9rem}
.foot-links a:hover{color:var(--text)}

@media (max-width:640px){
  .topnav{gap:.6rem}
  .topnav a:not(.btn){display:none}
}