/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #2d3748;
  background: #f7fafc;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  flex: 1;
}

/* Navigation */
.navbar {
  background: #1a202c;
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: #edf2f7;
  text-decoration: none;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-menu a {
  color: #cbd5e0;
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.3s;
  font-weight: 500;
}

.nav-menu a:hover {
  color: #63b3ed;
}

.nav-menu a.active {
  color: #63b3ed;
  border-bottom: 2px solid #63b3ed;
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
  background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
  color: white;
  border-radius: 12px;
  margin: 2rem 0;
  padding: 4rem 2rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  background: #3182ce;
  color: white;
  padding: 0.75rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  background: #2b6cb0;
}

.btn-primary {
  background: #3182ce;
  color: white;
  width: 100%;
  padding: 0.75rem;
  font-size: 1.1rem;
}

.btn-primary:hover {
  background: #2b6cb0;
}

/* Features / Cards */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0 3rem;
}

.card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s;
  text-align: center;
}

.card:hover {
  transform: translateY(-4px);
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: #2d3748;
}

.card p {
  color: #4a5568;
}

/* About Page */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  margin: 2rem 0;
}

.about-text h2 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #2d3748;
}

.about-text p {
  margin-bottom: 1rem;
  color: #4a5568;
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.about-list li {
  padding: 0.5rem 0;
  color: #2d3748;
}

.about-image {
  text-align: center;
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.placeholder-img {
  font-size: 6rem;
  margin-bottom: 1rem;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.product-card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s;
}

.product-card:hover {
  transform: translateY(-4px);
}

.product-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.product-card h3 {
  margin-bottom: 0.75rem;
  color: #2d3748;
}

.product-card p {
  color: #4a5568;
  margin-bottom: 1rem;
}

.product-specs {
  list-style: none;
  padding: 0;
  font-size: 0.9rem;
  color: #4a5568;
}

.product-specs li {
  padding: 0.25rem 0;
  border-bottom: 1px solid #edf2f7;
}

.product-specs li:last-child {
  border-bottom: none;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.service-item {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  text-align: center;
  transition: transform 0.2s;
}

.service-item:hover {
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.service-item h3 {
  color: #2d3748;
  margin-bottom: 0.5rem;
}

.service-item p {
  color: #4a5568;
}

/* Contact Page */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin: 2rem 0;
}

.contact-info h2, .contact-form h2 {
  margin-bottom: 1rem;
  color: #2d3748;
}

.contact-info p {
  color: #4a5568;
  margin-bottom: 1.5rem;
}

.contact-detail {
  margin-bottom: 1.5rem;
}

.contact-label {
  display: block;
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.25rem;
}

.contact-detail p {
  margin: 0;
  color: #4a5568;
}

.contact-detail a {
  color: #3182ce;
  text-decoration: none;
}

.contact-detail a:hover {
  text-decoration: underline;
}

.contact-form {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.3rem;
  color: #2d3748;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

/* Footer */
footer {
  background: #1a202c;
  color: #a0aec0;
  text-align: center;
  padding: 1.5rem 0;
  margin-top: 3rem;
}

footer a {
  color: #63b3ed;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-menu {
    margin-top: 0.75rem;
    gap: 1rem;
    justify-content: center;
  }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .about-content,
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .about-image {
    order: -1;
  }
  
  .product-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
  }
  
  .hero {
    padding: 2rem 1rem;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
}