/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --verde:        #007A3D;
  --verde-medio:  #009E4F;
  --negro:        #000000;
  --fondo:        #F5F5F5;
  --texto:        #1A1A1A;
  --texto-suave:  #555555;
  --blanco:       #FFFFFF;
  --ambar:        #F59E0B;
  --radio:        12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--texto);
  background: var(--fondo);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--verde) 0%, var(--negro) 100%);
  color: var(--blanco);
  text-align: center;
  padding: 80px 24px 100px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  margin-bottom: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.hero .tagline {
  font-size: 1.4rem;
  font-weight: 500;
  opacity: 0.9;
  margin-bottom: 16px;
}

.hero .subtitle {
  font-size: 1rem;
  opacity: 0.75;
  max-width: 580px;
  margin: 0 auto 36px;
}

.btn-primary {
  display: inline-block;
  background: var(--blanco);
  color: var(--verde);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 36px;
  border-radius: 50px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

/* ===== FEATURES ===== */
.features {
  padding: 80px 0;
  background: var(--blanco);
}

.features h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--texto);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--fondo);
  border-radius: var(--radio);
  padding: 28px 24px;
  border: 1px solid #E5E5E5;
  transition: transform 0.15s, box-shadow 0.15s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--verde);
}

.card p {
  font-size: 0.92rem;
  color: var(--texto-suave);
}

/* ===== DOWNLOAD ===== */
.download {
  background: linear-gradient(135deg, var(--verde) 0%, var(--negro) 100%);
  color: var(--blanco);
  text-align: center;
  padding: 80px 24px;
}

.download h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.download > .container > p {
  opacity: 0.8;
  margin-bottom: 36px;
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.btn-store img {
  height: 54px;
  border-radius: 8px;
}

.version-note {
  font-size: 0.82rem;
  opacity: 0.55;
}

/* ===== FOOTER ===== */
footer {
  background: var(--negro);
  color: rgba(255,255,255,0.5);
  padding: 32px 24px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--blanco); }

.footer-copy { font-size: 0.82rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .hero .tagline { font-size: 1.1rem; }
  .features h2, .download h2 { font-size: 1.6rem; }
}