:root {
  --primary-color: #0d6efd;
  --secondary-color: #6c757d;
  --accent-color: #6610f2;
  --font-family: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --bg: #ffffff;
  --text: #222;
  --muted: #666;
  --radius: 12px;
  --shadow: 0 10px 20px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-family);
  line-height: 1.6;
  font-size: clamp(16px, 1.8vw, 18px);
}

img { max-width: 100%; display: block; border-radius: var(--radius); }
.container { width: min(1100px, 92%); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.9); backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid #eee;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 0; }
.logo { font-weight: 700; font-size: 1.2rem; color: var(--primary-color); text-decoration: none; }
.nav-toggle { border: none; background: transparent; font-size: 1.6rem; display: none; }
.site-nav a { color: var(--text); text-decoration: none; margin-left: 1rem; padding: 0.5rem 0.2rem; }
.site-nav a:hover { color: var(--primary-color); }

/* Mobile nav */
@media (max-width: 800px) {
  .nav-toggle { display: inline-block; }
  .site-nav { position: fixed; top: 60px; right: 0; transform: translateX(100%); transition: transform .3s ease; background: #fff; border-left: 1px solid #eee; width: 70%; height: calc(100vh - 60px); padding: 1rem; display: flex; flex-direction: column; gap: 0.6rem; }
  .site-nav.open { transform: translateX(0%); }
}

/* Sections */
.section { padding: clamp(32px, 5vw, 80px) 0; }
.section .subtitle { color: var(--muted); margin: 0.3rem 0 1rem; }
.grid-2 { display: grid; grid-template-columns: 1fr; gap: 1.2rem; }
@media (min-width: 800px) { .grid-2 { grid-template-columns: 1.1fr 0.9fr; } }

/* Hero */
.hero { background: linear-gradient(120deg, rgba(13,110,253,0.1), rgba(102,16,242,0.08)); }
.hero-inner { display: grid; grid-template-columns: 1fr; gap: 1.2rem; align-items: center; }
@media (min-width: 900px) { .hero-inner { grid-template-columns: 1.1fr 0.9fr; } }
.hero-text h1 { font-size: clamp(28px, 6vw, 48px); margin: 0; }
.hero-text .content { margin-top: 0.8rem; }

/* Buttons */
.btn { display: inline-block; border-radius: 999px; padding: 0.7rem 1.1rem; text-decoration: none; }
.btn-primary { background: var(--primary-color); color: #fff; }
.btn-secondary { background: var(--secondary-color); color: #fff; }
.btn-accent { background: var(--accent-color); color: #fff; }
.btn:hover { filter: brightness(1.05); }

/* Cards grid */
.cards { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 700px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { border: 1px solid #eee; padding: 1rem; border-radius: var(--radius); box-shadow: var(--shadow); }

/* Carousel */
.carousel { display: flex; gap: 1rem; overflow: hidden; scroll-behavior: smooth; touch-action: pan-y; }
.carousel-item { min-width: 80%; flex: 0 0 auto; }
@media (min-width: 800px) { .carousel-item { min-width: 33%; } }

/* CTA */
.cta { text-align: center; }
.cta .btn { margin-top: 1rem; }

/* Footer */
.site-footer { background: #fafafa; border-top: 1px solid #eee; padding: 1rem 0; text-align: center; color: var(--muted); }

/* Motion reduce */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-nav { transition: none; }
}

/* Transições suaves nas seções */
.section { transition: background-color .3s ease, color .3s ease; }