/* SMSChat.AI clean static site (no build step) */
:root{
  --bg:#0b1020;
  --panel:#111a33;
  --text:#e9eefc;
  --muted:#b9c4e6;
  --brand:#7aa2ff;
  --brand2:#6ef3c5;
  --border:rgba(255,255,255,.12);
  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --radius:16px;
  --max:1100px;
  --pad:clamp(16px,3vw,28px);
  --h1:clamp(32px,4vw,52px);
  --h2:clamp(22px,2.8vw,32px);
  --h3:clamp(18px,2.2vw,22px);
  --p:clamp(15px,1.6vw,18px);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 600px at 20% 0%, rgba(122,162,255,.25), transparent 60%),
    radial-gradient(900px 520px at 80% 10%, rgba(110,243,197,.18), transparent 55%),
    linear-gradient(180deg, #080b16 0%, var(--bg) 100%);
  line-height:1.55;
}
a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding:0 var(--pad);}
.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{left:var(--pad); top:var(--pad); width:auto; height:auto; padding:10px 12px; background:#fff; color:#000; border-radius:10px; z-index:9999;}
.header{
  position:sticky; top:0; z-index:20;
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  background:rgba(8,11,22,.5);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 0;
}
.brand{
  display:flex; align-items:center; gap:10px; text-decoration:none;
  font-weight:700; letter-spacing:.2px;
  font-size:1.08rem;
}
.logo{
  width:34px; height:34px; border-radius:11px;
  background:linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: 0 10px 26px rgba(122,162,255,.22);
}
.nav-links{display:flex; align-items:center; gap:14px; flex-wrap:wrap;}
.nav-links a{
  text-decoration:none; color:var(--muted);
  font-weight:500; padding:8px 10px; border-radius:12px;
}
.nav-links a:hover{color:var(--text); background:rgba(255,255,255,.08)}
.cta{
  display:inline-flex; align-items:center; justify-content:center;
  border:1px solid var(--border);
  background:rgba(255,255,255,.06);
  padding:10px 14px; border-radius:14px; text-decoration:none;
  font-weight:600;
}
.cta.primary{
  border-color:rgba(122,162,255,.55);
  background:linear-gradient(135deg, rgba(122,162,255,.22), rgba(110,243,197,.12));
}
.hero{
  padding: clamp(34px, 7vw, 78px) 0 34px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(18px, 4vw, 40px);
  align-items:center;
}
@media (max-width: 920px){
  .hero-grid{grid-template-columns: 1fr;}
}
.badge{
  display:inline-flex; gap:10px; align-items:center;
  padding:8px 12px; border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.05);
  color:var(--muted); font-weight:600; font-size:13px;
}
.badge .dot{width:8px; height:8px; border-radius:99px; background:var(--brand2);}
h1{font-size:var(--h1); line-height:1.06; margin:14px 0 12px;}
.lede{font-size:var(--p); color:var(--muted); margin:0 0 18px;}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:18px;}
.card{
  border:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border-radius:var(--radius);
  box-shadow: var(--shadow);
}
.hero-card{padding:18px;}
.hero-card img{
  width:100%; height:auto; border-radius:12px; border:1px solid rgba(255,255,255,.14);
  display:block;
}
.kpi{
  display:grid; grid-template-columns: repeat(3, 1fr); gap:10px;
  margin-top:12px;
}
@media (max-width: 520px){ .kpi{grid-template-columns:1fr;} }
.kpi .k{
  padding:12px; border-radius:14px; border:1px solid var(--border);
  background:rgba(0,0,0,.15);
}
.k .n{font-weight:800; font-size:18px;}
.k .l{color:var(--muted); font-size:13px; margin-top:2px;}
.section{padding: 42px 0;}
.section h2{font-size:var(--h2); margin:0 0 12px;}
.section p{font-size:var(--p); color:var(--muted); margin:0 0 12px;}
.grid3{
  display:grid; grid-template-columns:repeat(3, 1fr);
  gap:14px;
}
@media (max-width: 980px){ .grid3{grid-template-columns:1fr;} }
.feature{padding:18px;}
.feature h3{font-size:var(--h3); margin:0 0 8px;}
.feature ul{margin:10px 0 0; padding-left:18px; color:var(--muted);}
.feature li{margin:6px 0;}
.callout{
  padding:22px; display:flex; gap:18px; align-items:center; justify-content:space-between;
  flex-wrap:wrap;
}
.callout p{margin:0; color:var(--muted); max-width:68ch;}
.footer{
  border-top:1px solid var(--border);
  padding: 26px 0 42px;
  color:var(--muted);
  font-size:14px;
}
.small{font-size:13px; color:var(--muted);}
.form-card{padding:18px;}
label{display:block; font-weight:600; margin:10px 0 6px;}
input{
  width:100%; max-width: 420px;
  padding:12px 14px; border-radius:14px;
  border:1px solid var(--border); background:rgba(0,0,0,.18);
  color:var(--text); outline:none;
}
input:focus{border-color:rgba(122,162,255,.7); box-shadow:0 0 0 4px rgba(122,162,255,.15);}
button{
  cursor:pointer;
  padding:12px 14px; border-radius:14px;
  border:1px solid rgba(122,162,255,.55);
  background:linear-gradient(135deg, rgba(122,162,255,.25), rgba(110,243,197,.12));
  color:var(--text); font-weight:700;
}
button:disabled{opacity:.6; cursor:not-allowed;}
.notice{margin-top:10px; color:var(--muted); font-size:14px;}
.notice strong{color:var(--text);}
hr.sep{border:0; height:1px; background:var(--border); margin:18px 0;}

.hero-headline {
  margin: 0 0 18px 0;
}

.hero-title {
  margin: 0 0 12px 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-subtitle-rotator {
  display: grid;
  margin: 0 0 10px 0;
}

.hero-subtitle {
  grid-area: 1 / 1;
  margin: 0;
  font-size: clamp(1.08rem, 2vw, 1.45rem);
  line-height: 1.25;
  font-weight: 600;
  opacity: 0;
  transform: translateY(8px);
  animation: heroSubtitleRotate 15s ease-in-out infinite;
  will-change: opacity, transform;
}

.hero-subtitle.s1 {
  animation-delay: 0s;
}

.hero-subtitle.s2 {
  animation-delay: 5s;
}

.hero-subtitle.s3 {
  animation-delay: 10s;
}

.hero-tagline {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.35;
  font-weight: 500;
  opacity: 0.82;
}

@keyframes heroSubtitleRotate {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }
  6% {
    opacity: 1;
    transform: translateY(0);
  }
  27% {
    opacity: 1;
    transform: translateY(0);
  }
  33% {
    opacity: 0;
    transform: translateY(-8px);
  }
  100% {
    opacity: 0;
    transform: translateY(-8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-subtitle {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero-subtitle.s2,
  .hero-subtitle.s3 {
    display: none;
  }

  .hero-title-accent-static {
    animation: none;
    background-position: 50% 50%;
  }
}

.hero-headline-static {
  max-width: 760px;
  margin: 0 0 24px 0;
}

.hero-title-static {
  margin: 14px 0 14px 0;
  font-size: clamp(1.45rem, 3.4vw, 2.4rem);
  line-height: 1.06;
  font-weight: 450;
  letter-spacing: -0.02em;
}

.hero-title-accent-static {
  display: inline-block;
  background: linear-gradient(
    110deg,
    rgba(190,220,255,0.92) 0%,
    rgba(255,255,255,1) 35%,
    rgba(170,208,255,0.95) 60%,
    rgba(255,255,255,1) 85%,
    rgba(190,220,255,0.92) 100%
  );
  background-size: 220% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: heroTitleSweep 5.5s ease-in-out infinite;
  will-change: background-position;
}

@keyframes heroTitleSweep {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.hero-title-rest-static {
  display: inline;
}

.hero-subtitle-static {
  margin: 0 0 10px 0;
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.4;
  font-weight: 600;
  opacity: 0.92;
}

.hero-tagline-static {
  margin: 0;
  font-size: clamp(1rem, 1.35vw, 1.08rem);
  line-height: 1.5;
  font-weight: 400;
  opacity: 0.78;
}

.hero-headline-static::after {
  content: "";
  display: block;
  width: 72px;
  height: 1px;
  margin-top: 18px;
  background: linear-gradient(90deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 100%);
}