/* ===== smsinbox.io — shared page styles ===== */
:root{
  --bg:#070a14; --ink:#fff;
  --purple:#7c5cff; --blue:#5b8def; --teal:#5dedb4; --lilac:#a78bfa;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.icon{font-size:18px;line-height:1}

/* ambient orbs */
.orb{position:fixed;border-radius:50%;pointer-events:none;z-index:0}
.orb1{top:-140px;left:25%;width:640px;height:420px;background:radial-gradient(ellipse at center,rgba(124,92,255,0.22),transparent 70%);filter:blur(60px)}
.orb2{top:700px;right:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(29,233,182,0.12),transparent 70%);filter:blur(70px)}

/* header */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(7,10,20,0.72);border-bottom:1px solid rgba(255,255,255,0.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;letter-spacing:-0.02em}
.logo-badge{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--purple),var(--blue));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(124,92,255,0.5),inset 0 1px 1px rgba(255,255,255,0.4)}
.logo-badge .icon{font-size:18px;color:#fff}
.logo .dot{color:var(--purple)}
.menu{display:flex;align-items:center;gap:22px;font-size:13.5px;color:rgba(255,255,255,0.6)}
.menu a{transition:color .2s}.menu a:hover{color:#fff}
.btn{cursor:pointer;border:none;font-family:inherit;font-weight:500;border-radius:10px;transition:transform .2s,box-shadow .2s}
.btn-primary{background:linear-gradient(135deg,var(--purple),var(--blue));color:#fff;padding:9px 18px;font-size:13.5px;box-shadow:0 8px 22px rgba(124,92,255,0.45)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(124,92,255,0.6)}

/* page hero */
.page-hero{position:relative;z-index:2;text-align:center;padding:64px 0 30px}
.crumbs{font-size:12.5px;color:rgba(255,255,255,0.4);margin-bottom:14px}
.crumbs a:hover{color:var(--teal)}
.page-hero h1{font-size:clamp(30px,5vw,46px);font-weight:600;letter-spacing:-0.03em;margin-bottom:12px}
.page-hero .grad{background:linear-gradient(135deg,var(--lilac),var(--teal));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{font-size:15px;color:rgba(255,255,255,0.55);max-width:560px;margin:0 auto}
.updated{display:inline-block;margin-top:14px;font-size:12px;color:rgba(255,255,255,0.4);font-family:var(--mono)}

/* content card */
main{position:relative;z-index:2}
.content{max-width:860px;margin:30px auto 0;background:linear-gradient(160deg,rgba(255,255,255,0.05),rgba(255,255,255,0.02));border:1px solid rgba(255,255,255,0.09);border-radius:20px;padding:40px 44px}
.content h2{font-size:21px;font-weight:600;margin:34px 0 12px;letter-spacing:-0.01em;scroll-margin-top:80px}
.content h2:first-child{margin-top:0}
.content h3{font-size:16px;font-weight:600;margin:22px 0 8px;color:#e8eaff}
.content p{font-size:14.5px;color:rgba(255,255,255,0.72);margin-bottom:14px}
.content ul,.content ol{margin:0 0 16px;padding-left:22px}
.content li{font-size:14.5px;color:rgba(255,255,255,0.72);margin-bottom:9px}
.content li::marker{color:var(--purple)}
.content a{color:var(--lilac);text-decoration:underline;text-underline-offset:2px}
.content a:hover{color:var(--teal)}
.content strong{color:#fff;font-weight:600}
.content .lead{font-size:15.5px;color:rgba(255,255,255,0.82)}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.1),transparent);margin:30px 0}

/* table of contents */
.toc{background:rgba(124,92,255,0.07);border:1px solid rgba(124,92,255,0.2);border-radius:14px;padding:20px 24px;margin-bottom:30px}
.toc h4{font-size:13px;text-transform:uppercase;letter-spacing:0.06em;color:var(--lilac);margin-bottom:12px}
.toc ul{list-style:none;padding:0;margin:0;columns:2;column-gap:30px}
.toc li{margin-bottom:8px;font-size:13.5px}
.toc a{color:rgba(255,255,255,0.65);text-decoration:none}
.toc a:hover{color:var(--teal)}

/* callout */
.callout{display:flex;gap:13px;background:rgba(255,180,84,0.08);border:1px solid rgba(255,180,84,0.25);border-radius:13px;padding:16px 18px;margin:18px 0}
.callout .icon{color:#ffb454;font-size:20px;flex-shrink:0;margin-top:1px}
.callout p{font-size:13.5px;color:rgba(255,255,255,0.7);margin:0}
.callout.info{background:rgba(93,237,180,0.07);border-color:rgba(93,237,180,0.22)}
.callout.info .icon{color:var(--teal)}

/* feature grid (features page) */
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;max-width:900px;margin:0 auto}
.fcard{position:relative;overflow:hidden;background:linear-gradient(160deg,rgba(255,255,255,0.07),rgba(255,255,255,0.03));border:1px solid rgba(255,255,255,0.09);border-radius:18px;padding:26px 24px;transition:transform .2s,box-shadow .3s,border-color .3s}
.fcard:hover{transform:translateY(-6px);box-shadow:0 26px 50px rgba(0,0,0,0.5),0 0 0 1px rgba(124,92,255,0.45);border-color:rgba(124,92,255,0.5)}
.fcard .ibox{width:52px;height:52px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:26px;color:#fff;margin-bottom:16px;background:linear-gradient(135deg,var(--g1,#7c5cff),var(--g2,#5b8def));box-shadow:0 12px 26px rgba(124,92,255,0.4),inset 0 1px 2px rgba(255,255,255,0.4)}
.fcard h3{font-size:17px;font-weight:600;margin-bottom:7px}
.fcard p{font-size:13.5px;color:rgba(255,255,255,0.55);line-height:1.55}

/* contact cards (about) */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;max-width:760px;margin:24px auto 0}
.ccard{background:linear-gradient(160deg,rgba(255,255,255,0.06),rgba(255,255,255,0.025));border:1px solid rgba(255,255,255,0.09);border-radius:16px;padding:24px;text-align:center}
.ccard .ibox{width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:23px;color:#c9b8ff;margin:0 auto 14px;background:linear-gradient(135deg,rgba(124,92,255,0.25),rgba(91,141,239,0.18));border:1px solid rgba(124,92,255,0.35)}
.ccard h3{font-size:15px;font-weight:600;margin-bottom:6px}
.ccard p{font-size:13.5px;color:rgba(255,255,255,0.6)}
.ccard a{color:var(--lilac)}

/* steps row (about values) */
.vrow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:900px;margin:30px auto 0}
@media(max-width:760px){.vrow{grid-template-columns:1fr}}
.vcard{display:flex;gap:14px;background:linear-gradient(160deg,rgba(255,255,255,0.06),rgba(255,255,255,0.025));border:1px solid rgba(255,255,255,0.09);border-radius:16px;padding:22px}
.vnum{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--purple),var(--blue));color:#fff;font-weight:600;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;box-shadow:0 8px 18px rgba(124,92,255,0.4)}
.vcard h3{font-size:15.5px;font-weight:600;margin-bottom:5px}
.vcard p{font-size:13px;color:rgba(255,255,255,0.55);line-height:1.5}

/* CTA */
.cta{position:relative;max-width:860px;margin:46px auto 0;padding:42px 30px;text-align:center;background:linear-gradient(135deg,rgba(124,92,255,0.2),rgba(91,141,239,0.12));border:1px solid rgba(124,92,255,0.3);border-radius:22px;box-shadow:0 24px 60px rgba(124,92,255,0.2)}
.cta h2{font-size:25px;font-weight:600;margin-bottom:10px}
.cta p{font-size:14.5px;color:rgba(255,255,255,0.6);margin-bottom:22px}
.cta .btn-white{background:#fff;color:var(--bg);padding:13px 30px;font-size:14px;font-weight:600;border-radius:11px;display:inline-block;box-shadow:0 12px 30px rgba(0,0,0,0.4)}

/* footer */
footer{position:relative;z-index:2;margin-top:64px;padding:42px 0 24px;border-top:1px solid rgba(255,255,255,0.07)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;margin-bottom:30px}
.foot-brand p{font-size:13px;color:rgba(255,255,255,0.4);margin-top:14px;line-height:1.6;max-width:240px}
.foot-col h4{font-size:13px;font-weight:500;color:rgba(255,255,255,0.85);margin-bottom:14px}
.foot-col a{display:block;font-size:13px;color:rgba(255,255,255,0.45);margin-bottom:9px;transition:color .2s}
.foot-col a:hover{color:rgba(255,255,255,0.85)}
.foot-bot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.06);font-size:12px;color:rgba(255,255,255,0.3)}
.foot-bot a{color:rgba(255,255,255,0.3)}.foot-bot a:hover{color:rgba(255,255,255,0.6)}
.foot-company{font-size:12px;color:rgba(255,255,255,0.4);line-height:1.7;padding:16px 0;margin-bottom:8px;border-top:1px solid rgba(255,255,255,0.06)}
.foot-company strong{color:rgba(255,255,255,0.6);font-weight:600}
.foot-company a{color:var(--lilac)}

@media(max-width:760px){
  .content{padding:28px 22px}
  .toc ul{columns:1}
  .foot-grid{grid-template-columns:1fr 1fr}
  .menu a:not(.keep){display:none}
}