/* Base Styles */
body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Title Section */
.title-section {
    background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.company-name {
    font-size: 2.5rem;
    margin: 0;
    font-weight: 700;
    letter-spacing: 1px;
}

.company-name span {
    color: #3498db;
}

.page-title {
    font-size: 3rem;
    margin: 20px 0 10px;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.page-subtitle {
    font-size: 1.2rem;
    margin: 0;
    font-weight: 300;
    opacity: 0.9;
}

/* Content Area */
.content-area {
    padding: 40px 0;
    min-height: 500px;
}

/* Footer Styles */
.product-footer {
    background: linear-gradient(135deg, #1a252f 0%, #2c3e50 100%);
    color: white;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.product-footer h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.product-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.product-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 120px;
    padding: 20px 10px;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.product-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.product-link.active {
    background-color: #3498db;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.product-link i {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.product-link span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Custom Icons */
.fa-pipe::before {
    content: "║";
    font-weight: bold;
    transform: rotate(90deg);
    display: inline-block;
}

.fa-tube::before {
    content: "○";
    font-weight: bold;
}

/* Responsive Design */
@media (max-width: 768px) {
    .company-name {
        font-size: 2rem;
    }
    .page-title {
        font-size: 2.2rem;
    }
    .product-nav {
        gap: 10px;
    }
    .product-link {
        width: 100px;
        padding: 15px 5px;
    }
    .product-link i {
        font-size: 1.5rem;
    }
    .product-link span {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .product-nav {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-link {
        width: 100%;
    }
}








.responsive-image {
  display: block;
  margin: 20px auto; /* center + spacing */
  max-width: 100%; /* prevents overflow on small screens */
  height: auto; /* keeps aspect ratio */
}






























/* Crystal Clear Back Button CSS */
.sharp-back-container {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;
}

.sharp-back-button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: white;
  border: 1px solid #e0e3e7;
  border-radius: 8px;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.sharp-arrow {
  width: 20px;
  height: 20px;
  fill: #3498db;
  transition: transform 0.2s ease;
}

.sharp-button-text {
  color: #2c3e50;
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

/* Hover Effects */
.sharp-back-button:hover {
  border-color: #3498db;
  box-shadow: 0 4px 16px rgba(52,152,219,0.15);
}

.sharp-back-button:hover .sharp-arrow {
  transform: translateX(-3px);
}

.sharp-back-button:hover .sharp-button-text {
  color: #3498db;
}

/* Active State */
.sharp-back-button:active {
  transform: scale(0.96);
  box-shadow: 0 1px 6px rgba(0,0,0,0.1);
}

/* Mobile Optimization */
@media (max-width: 768px) {
  .sharp-back-container {
    top: 12px;
    left: 12px;
  }
  
  .sharp-back-button {
    padding: 10px 12px;
    gap: 6px;
  }
  
  .sharp-arrow {
    width: 18px;
    height: 18px;
  }
  
  .sharp-button-text {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .sharp-back-button {
    padding: 8px 10px 8px 8px;
    min-width: 40px;
  }
  
  .sharp-button-text {
    display: none;
  }
  
  .sharp-back-button:hover .sharp-button-text {
    display: inline;
    margin-left: 4px;
  }
}