body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: #0f0f0f;
  color: #fff;
  line-height: 1.6;
}

/* HERO */
.hero {
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
              url('images/hero.png') center/cover no-repeat;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero-content h1 {
  font-size: 3em;
  margin-bottom: 10px;
}

.hero-content p {
  font-size: 1.3em;
  margin-bottom: 20px;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-buttons .btn {
  margin: 10px 5px;
  position: relative;
  z-index: 2; /* выше фона */
  padding: 15px 30px;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.3s;
}

.hero-buttons .btn {
  background: rgba(229,9,20,0.9); /* красная кнопка с прозрачностью */
  color: #fff;
}

.hero-buttons .btn:hover {
  transform: scale(1.05);
  background: rgba(255,30,39,0.95);
}

.hero-buttons .btn.whatsapp {
  background: rgba(37,211,102,0.9);
}

.hero-buttons .btn.whatsapp:hover {
  background: rgba(37,211,102,1);
}

/* SECTIONS */
section {
  padding: 60px 20px;
  max-width: 1100px;
  margin: auto;
}

.dark {
  background: #181818;
}

/* GRID CARDS */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: #1f1f1f;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 15px 30px;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.3s;
}

.btn.whatsapp {
  background: #25D366;
  color: #000;
}

.btn.whatsapp:hover {
  background: #1ebe5d;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 30px;
  background: #000;
  font-size: 14px;
}

/* FLOATING WHATSAPP */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #25D366;
  color: #000;
  border-radius: 50%;
  text-align: center;
  font-size: 30px;
  line-height: 60px;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
  z-index: 50; /* ниже hero текста, не заслоняет контент */
}

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2em;
  }
  .hero-content p {
    font-size: 1em;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .hero-buttons {
    flex-direction: column;
  }
}