:root{--bg:#f7fafc;--accent:#6c63ff;--muted:#64748b;--card:#ffffff}
*{box-sizing:border-box}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;background:var(--bg);color:#0f172a;line-height:1.6}

/* layout spacing */
.container{max-width:1000px;margin:0 auto;padding:.8rem}
.site-header{background:transparent;padding:1rem 0}
.site-header .container{display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700;color:var(--accent);text-decoration:none;font-size:2rem}

/* Navigation block with rounded background and shadow (contains Home/About/Contact) */
.nav-block{display:flex;gap:1rem;align-items:center;padding:.45rem .7rem;border-radius:12px;background:rgba(255,255,255,0.98);box-shadow:0 8px 22px rgba(2,6,23,.07)}
.nav-block a{color:var(--muted);text-decoration:none;padding:.65rem 1rem;border-radius:10px;font-size:1.05rem;display:inline-flex;align-items:center;gap:.6rem;line-height:1;min-width:100px;justify-content:center}
.nav-block a:hover{background:rgba(99,102,241,.04);color:#111827}
.nav-block a:focus{outline:none;box-shadow:0 6px 16px rgba(99,102,241,.14)}
.nav-block a.active{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(108,99,255,.14)}
/* make .nav-btn visually same as others unless active */
.nav-block .nav-btn{background:transparent;color:var(--muted);box-shadow:none}

/* mobile nav toggle button */
.nav-toggle{display:none;background:transparent;border:1px solid rgba(15,23,42,.06);padding:.5rem .7rem;border-radius:10px;font-size:1.15rem;color:var(--muted);align-items:center;justify-content:center}
.nav-toggle .nav-icon{font-size:1.2rem;line-height:1}

/* Hero */
.hero{padding:1.2rem 0}
.hero-inner{display:grid;grid-template-columns:1fr 320px;gap:2rem;align-items:center}
.hero-copy h1{font-size:2.6rem;margin:.1rem 0 0}
.tagline{color:var(--muted);margin:0.8rem 0 1.2rem}
 .hero-desc{color:var(--muted);margin:0.5rem 0}
 .features-intro{color:var(--muted);margin:0.5rem 0 1rem}
.cta-row{display:flex;gap:.7rem;align-items:center}
.btn{display:inline-block;text-decoration:none}
.btn.store{background:transparent;padding:10px 12px;border-radius:10px;display:inline-flex;align-items:center;box-shadow:none;min-width:120px;justify-content:center}
.btn.store img{height:64px;display:block}
.btn.store.large img{height:84px}
.phone-mock{width:100%;max-width:320px;border-radius:18px;box-shadow:2px 12px 30px rgba(2,6,23,.07)}

/* app logo: full-size square with 25% rounded corners and shadow */
.phone-mock.logo{
  width:100%;
  max-width:320px;
  aspect-ratio:1 / 1;
  display:block;
  border-radius:25%;
  box-shadow:2px 12px 30px rgba(2,6,23,.07);
  object-fit:cover;
  overflow:hidden;
}

/* Features */
.features{padding:1.5rem 0}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem}
.feature{background:var(--card);padding:.85rem;border-radius:10px;box-shadow:0 6px 14px rgba(2,6,23,.045)}
.feature h3{margin-top:0}

/* Screenshots */
.screenshots{padding:1rem 0 1.5rem}
.shots{display:flex;gap:.75rem;flex-wrap:wrap}
.shots img{width:calc(33% - .5rem);min-width:140px;border-radius:10px;background:#fff;padding:10px;box-shadow:0 6px 14px rgba(2,6,23,.05)}

.download-cta{padding:1.25rem 0;text-align:center}
.download-cta p{max-width:700px;margin:0 auto 1rem}

/* stacked store badges at page bottom */
.store-stack{display:flex;flex-direction:column;gap:.75rem;align-items:center;justify-content:center;margin-top:.5rem}
.btn.store.small{padding:8px 10px}
.btn.store.small img{height:64px}

@media(min-width:900px){
  /* keep stacked bottom badges compact on large screens */
  .store-stack{gap:.9rem}
}

.site-footer{border-top:1px solid rgba(15,23,42,.06);padding:.9rem 0;margin-top:1rem}
.content{padding:.9rem 0}
.contact-form{display:grid;gap:.6rem;max-width:640px}
label{font-size:.98rem}
input,textarea{width:100%;padding:.75rem;border-radius:8px;border:1px solid #e6eef8}
button.btn{background:var(--accent);color:#fff;border:none;padding:.7rem 1.1rem;border-radius:8px;cursor:pointer}

@media(max-width:900px){
  .container{padding:.9rem}
}

@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr}
  .phone-mock{margin:0 auto}
  .shots img{width:100%;min-width:0}
  .nav-block{padding:.15rem}
  .hero-copy h1{font-size:1.9rem}
}

/* responsive nav: hide nav by default on small screens and show toggle */
@media(max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-block{display:none;flex-direction:column;gap:.35rem;padding:.5rem;border-radius:10px;margin-top:.6rem}
  .nav-block.open{display:flex}
  .nav-block a{min-width:0;padding:.6rem .8rem}
  .site-header .container{flex-direction:row;align-items:center}
}

@media(min-width:900px){
  .nav-toggle{display:none}
}

/* footer links and disclaimer */
.footer-links{margin-bottom:.4rem;color:var(--muted);font-size:.95rem}
.footer-links a{color:var(--muted);text-decoration:none;margin:0 .35rem}
.footer-links a:hover{text-decoration:underline}
.footer-disclaimer{font-size:.82rem;color:#475569;margin-top:.6rem;max-width:900px}