/* =========================
   GLOBAL RESET & BASE
========================= */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f7fa;
  color: #1a202c;
  line-height: 1.6;
}

/* =========================
   HEADER
========================= */

.site-header {
  background: #f9fbfd;
  text-align: center;
  padding: 40px 20px 20px;
  border-bottom: 1px solid #e2e8f0;
}

.logo-center {
  margin-bottom: 25px;
}

.main-logo {
  height: 170px;          /* BIG logo */
  width: auto;
  display: block;
  margin: 0 auto;
  background: transparent;
}

}

.logo-center h1 {
  margin-top: 8px;
  font-size: 56px;        /* BIG brand name */
  font-weight: 800;      /* Strong presence */
  letter-spacing: 2px;
  color: #0b2c4d;
}


/* =========================
   TAB NAVIGATION
========================= */

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 10px;
}

.tab-link {
  background: none;
  border: none;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  color: #4a5568;
  padding-bottom: 6px;
  transition: color 0.2s ease;
}

.tab-link:hover {
  color: #0b2c4d;
}

.tab-link.active {
  color: #0b2c4d;
  border-bottom: 3px solid #0b2c4d;
}

/* =========================
   TAB CONTENT SYSTEM
   (MOST IMPORTANT PART)
========================= */

.tab-content-area {
  max-width: 1000px;
  margin: 40px auto;
  padding: 40px 30px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Hide all tabs by default */
.tab-content {
  display: none;
  animation: fadeIn 0.35s ease-in-out;
}

/* Show only active tab */
.tab-content.active {
  display: block;
}

/* =========================
   TAB CONTENT STYLING
========================= */

.tab-content h2 {
  color: #0b2c4d;
  margin-bottom: 15px;
  font-size: 24px;
}

.tab-content p {
  font-size: 16px;
  color: #2d3748;
  max-width: 800px;
}

/* =========================
   CTA BUTTON
========================= */

.cta-btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: #0b2c4d;
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background 0.2s ease;
}

.cta-btn:hover {
  background: #083055;
}

/* =========================
   FOOTER
========================= */

footer {
  margin-top: 60px;
  padding: 20px;
  text-align: center;
  background: #0b2c4d;
  color: #ffffff;
  font-size: 14px;
}
/* ================================
   Contact / Request Quote Section
================================ */

.contact-section {
  padding: 80px 0;
}

.contact-grid {
  display: flex;
  gap: 50px;
  align-items: flex-start;
}

.contact-info {
  flex: 1;
}

.contact-form {
  flex: 1;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  box-sizing: border-box;
}

.contact-form button {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  cursor: pointer;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .contact-grid {
    flex-direction: column;
  }
}


/* =========================
   ANIMATIONS
========================= */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================
   MOBILE RESPONSIVE
========================= */

@media (max-width: 768px) {

  .main-logo {
    height: 95px;
  }

  .logo-center h1 {
    font-size: 34px;
    letter-spacing: 1px;
  }

  .tab-nav {
    flex-wrap: wrap;
    gap: 20px;
  }

  .tab-link {
    font-size: 16px;
  }

  .tab-content-area {
    margin: 30px 15px;
    padding: 30px 20px;
  }

  footer {
    font-size: 13px;
  }
}
/* =========================
   PCB Design – Document Style
========================= */

.design-doc h3 {
  margin-top: 30px;
  margin-bottom: 12px;
  font-size: 18px;
  color: #1a202c;
}

.design-doc ul {
  margin-left: 20px;
  margin-bottom: 20px;
}

.design-doc li {
  margin-bottom: 10px;
  line-height: 1.6;
  color: #2d3748;
}

.design-doc strong {
  font-weight: 600;
  color: #000000;
}
/* =========================
   Certifications Strip
========================= */

.cert-strip {
  margin-top: 40px;
  padding: 20px 0;
  background: #f9fbfd;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.cert-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.cert-container span {
  padding: 8px 16px;
  background: #ffffff;
  border: 1px solid #cbd5e0;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #0b2c4d;
}
/* =========================
   Certifications Strip
========================= */

.cert-strip {
  margin-top: 40px;
  padding: 25px 0;
  background: #f9fbfd;
  border-top: 1px solid #e2e8f0;
}

.cert-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.cert-container img {
  height: 40px;
  opacity: 0.85;
  transition: opacity 0.2s ease;
}

.cert-container img:hover {
  opacity: 1;
}