/* Minimal Purple style for Olá Mundo
   Palette:
   --primary: #6b46ff
   --secondary: #9f7aea
   --accent: #805ad5
   --bg: #f8f7ff
   --surface: #ffffff
   --text: #0f1724
   --muted: #6b7280
   --sidebar_text: #524b6b
*/
:root{
  --primary:#6b46ff;
  --secondary:#9f7aea;
  --accent:#805ad5;
  --bg:#f8f7ff;
  --surface:#ffffff;
  --text:#0f1724;
  --muted:#6b7280;
  --sidebar_text:#524b6b;
  --radius-md:12px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.container{max-width:1100px}

/* Header */
.site-header{
  padding:1rem 0;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:var(--surface);
  border-radius:var(--radius-md);
  padding:1rem 1.25rem;
  box-shadow: 0 0 0 1px rgba(15,23,36,0.04);
}
.brand{
  font-weight:700;
  color:var(--text);
  font-size:1.25rem;
}
.nav-link{
  color:var(--muted);
  font-weight:500;
  padding:0.25rem 0.5rem;
}
.nav-link.active{
  color:var(--sidebar_text);
}

/* Hero */
.site-main{
  min-height:calc(100vh - 170px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:3.5rem 1rem;
}
.hero{
  text-align:center;
  padding:6rem 1rem;
}
.hero-title{
  margin:0 0 1.25rem 0;
  font-weight:800;
  line-height:0.95;
  color:var(--primary); /* changed to purple per request */
  font-size:5.5rem; /* large desktop */
  letter-spacing:-0.02em;
}
.hero-underline{
  display:block;
  width:68px;
  height:8px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:999px;
  margin:0 auto 1.25rem auto;
  box-shadow: none;
}
.hero-sub{
  margin:0;
  color:var(--sidebar_text);
  font-weight:500;
  font-size:1.25rem;
}

/* Button (Saiba mais) */
.btn-cta{
  display:inline-block;
  padding:0.75rem 1.25rem;
  font-size:1rem;
  font-weight:600;
  color:#ffffff;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border:0;
  border-radius:999px;
  text-decoration:none;
  transition:transform .12s ease, box-shadow .12s ease, opacity .12s ease;
}
.btn-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(107,70,255,0.12);
  text-decoration:none;
}
.btn-cta:focus{
  outline:3px solid rgba(99,102,241,0.18);
  outline-offset:3px;
  border-radius:999px;
}

/* Footer */
.site-footer{
  padding:2rem 1rem;
}
.footer-text{
  margin:0;
  color:var(--muted);
  font-size:0.95rem;
}

/* Responsive adjustments */
@media (max-width: 991.98px){
  .hero{
    padding:4rem 1rem;
  }
  .hero-title{font-size:4.25rem}
}

@media (max-width: 575.98px){
  .header-inner{padding:0.75rem 1rem}
  .brand{font-size:1.05rem}
  .hero{padding:3rem 0}
  .hero-title{font-size:2.75rem}
  .hero-sub{font-size:1rem}
  .hero-underline{width:48px;height:7px}
  .site-main{min-height:calc(100vh - 150px)}
}

/* Accessibility: focus states */
.nav-link:focus{
  outline:3px solid rgba(107,70,255,0.12);
  outline-offset:3px;
  border-radius:6px;
}