/* Livi Speaks - Site estático */
:root {
  --primary: #5c6bc0;
  --primary-dark: #3949ab;
  --accent: #7e57c2;
  --text: #333;
  --text-light: #555;
  --bg: #ffffff;
  --bg-light: #f8f9fc;
  --border: #e0e0e0;
  --shadow: 0 2px 10px rgba(0,0,0,0.07);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

header {
  background: #fff;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0.7rem 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img { height: 192px; width: auto; }

nav ul { list-style: none; display: flex; gap: 1.3rem; }
nav a { color: var(--text); font-weight: 500; }
nav a:hover { color: var(--primary); text-decoration: none; }

main { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1.2rem 3rem; }

.hero {
  text-align: center;
  padding: 2rem 0 1.5rem;
}

.hero h1 {
  font-size: 2.4rem;
  color: var(--primary-dark);
  margin-bottom: 0.4rem;
}

.hero .tagline {
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
  font-weight: 500;
}

.hero p { font-size: 1.1rem; color: var(--text-light); margin-bottom: 1.2rem; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover { background: var(--primary-dark); text-decoration: none; }

.section { margin: 2.5rem 0; }
.section h2 {
  font-size: 1.7rem;
  color: var(--primary);
  margin-bottom: 1rem;
  text-align: center;
}

.about {
  display: flex;
  gap: 1.8rem;
  align-items: center;
  flex-wrap: wrap;
}

.about img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: var(--shadow);
}

.about-text { flex: 1; min-width: 260px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 1rem;
}

.card {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 1.2rem;
  text-align: center;
  border: 1px solid var(--border);
}

.card h3 { margin-bottom: 0.5rem; color: var(--primary-dark); }

.partners {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  align-items: center;
  margin: 1rem 0;
}

.partners img { height: 80px; width: auto; object-fit: contain; }

.materials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-top: 1rem;
}

.material-item {
  text-align: center;
}

.material-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 0.6rem;
  box-shadow: var(--shadow);
}

.contact-box {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  border: 1px solid var(--border);
}

.contact-box p { margin: 0.4rem 0; font-size: 1.05rem; }

footer {
  background: #f1f3f8;
  border-top: 1px solid var(--border);
  padding: 1.5rem 1.2rem;
  text-align: center;
  font-size: 0.9rem;
  color: #666;
}

@media (max-width: 700px) {
  .header-inner { flex-direction: column; gap: 0.5rem; }
  nav ul { gap: 0.8rem; flex-wrap: wrap; justify-content: center; }
  .hero h1 { font-size: 2rem; }
  .about { flex-direction: column; text-align: center; }
}