/* --- Container & Layout --- */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* --- Headings --- */
h1, h2, h3, h4 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  color: #FFFFFF;
}

h1 {
  font-size: 2.5rem; /* mobile first */
}
@media(min-width: 640px) { h1 { font-size: 3.5rem; } }
@media(min-width: 1024px) { h1 { font-size: 4.5rem; } }

h2 {
  font-size: 2rem;
}
@media(min-width: 640px) { h2 { font-size: 2.5rem; } }
@media(min-width: 1024px) { h2 { font-size: 3rem; } }

/* --- Paragraphs --- */
p {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: #E0E0E0;
}

/* --- Buttons --- */
.button-primary {
  background: #1E40AF; /* Blue */
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: 0.3s ease;
}
.button-primary:hover {
  background: #2563EB;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.hero img.bg-hero {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.hero .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media(min-width: 768px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }
.feature-card img {
  height: 4rem;
  margin-bottom: 1rem;
}
.feature-card {
  background: #111827;
  padding: 2rem;
  border-radius: 1rem;
  text-align: center;
  transition: transform 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
}

/* --- Screenshots Section --- */
.screenshots {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media(min-width: 1024px) { .screenshots { grid-template-columns: 1fr 1fr; } }
.screenshots img {
  border-radius: 1rem;
  box-shadow: 0 8px 20px rgba(0,0,0,0.6);
  width: 100%;
  height: auto;
}

/* --- Footer --- */
footer {
  padding: 3rem 1rem;
  background: rgba(0,0,0,0.8);
  color: #9CA3AF;
  text-align: center;
}
footer a {
  color: #9CA3AF;
  margin: 0 0.5rem;
  transition: 0.3s ease;
}
footer a:hover {
  color: #2563EB;
}

/* --- Responsive tweaks --- */
img {
  max-width: 100%;
  height: auto;
}