/* =============================
   🌐 Qualnex Solutions Stylesheet
   ============================= */

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: "Mardoto", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: white;
    color: #000;
  }
  
  /* ✅ Navigation Bar */
  nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: white;
    padding: 10px 20px;
    border-bottom: 2px solid #1f80ff;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
  }
  
  .nav-logo img {
    height: 70px;
    width: auto;
  }
  
  /* ✅ Navigation Links */
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  .nav-menu a {
    text-decoration: none;
    color: #1f80ff;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    border-bottom: 2px solid transparent;
    padding-bottom: 3px;
  }
  
  .nav-menu a:hover {
    color: #1edfe6;
    border-bottom: 2px solid #1edfe6;
  }
  
  /* ✅ Hamburger Menu */
  .menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
  }
  
  .bar {
    height: 3px;
    width: 25px;
    background-color: #1f80ff;
    border-radius: 5px;
    transition: all 0.3s ease;
  }
  
  /* ✅ Responsive Navigation */
  @media (max-width: 768px) {
    .menu-toggle {
      display: flex;
    }
  
    .nav-menu {
      position: absolute;
      top: 80px;
      left: 0;
      width: 100%;
      background-color: white;
      flex-direction: column;
      align-items: center;
      gap: 20px;
      padding: 20px 0;
      border-top: 2px solid #1f80ff;
      display: none;
    }
  
    .nav-menu.active {
      display: flex;
    }
  
    .menu-toggle.active .bar:nth-child(2) {
      opacity: 0;
    }
  
    .menu-toggle.active .bar:nth-child(1) {
      transform: translateY(8px) rotate(45deg);
    }
  
    .menu-toggle.active .bar:nth-child(3) {
      transform: translateY(-8px) rotate(-45deg);
    }
  }
  
  /* ✅ Hero Section */
  .hero {
    margin-top: 80px;
    position: relative;
    width: 100%;
    height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    overflow: hidden;
  }
  
  /* Background image layer */
  .hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("websitebannerQS_NASA.jpg");
    background-size: cover;
    background-position: center;
    filter: brightness(2);
    z-index: 0;
  }
  
  /* Gradient overlay */
  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom right, rgba(0, 42, 255, 0.8), rgba(0, 247, 255, 0.8));
    z-index: 1;
    pointer-events: none;
  }
  
  /* Hero text */
  .hero h1 {
    position: relative;
    z-index: 2;
    color: white;
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    max-width: 900px;
    line-height: 1.3;
    text-transform: uppercase;
  }
  
  @media (max-width: 900px) {
    .hero h1 {
      font-size: 2.2rem;
      line-height: 1.4;
    }
  }
  
  /* ✅ About Section */
  #about {
    background-color: white;
    padding: 100px 20px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
  }
  
  .about-header {
    color: #1f80ff;
    font-size: 2rem;
    margin-bottom: 20px;
  }
  
  .about-text {
    color: #000;
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .core-values {
    margin-top: 80px;
  }
  
  @media (max-width: 768px) {
    .core-values {
      margin-top: 50px;
    }
  }
  
  /* ✅ Core Values */
  .core-header {
    font-size: 1.8rem;
    color: #1f80ff;
    margin-bottom: 60px;
  }
  
  .core-values-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 40px;
  }
  
  .core-value {
    flex: 1;
    max-width: 300px;
    min-width: 250px;
    background-color: #fff;
    border: 2px solid #1f80ff;
    border-radius: 12px;
    padding: 30px 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  
  .core-value:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    border-color: #1edfe6;
  }
  
  .core-value i[data-lucide] {
    width: 70px;
    height: 70px;
    stroke: #1f80ff;
    stroke-width: 2;
    margin-bottom: 20px;
  }
  
  .core-value h4 {
    font-size: 1.3rem;
    color: #1f80ff;
    margin-bottom: 10px;
  }
  
  .core-value p {
    font-size: 1rem;
    color: #333;
    line-height: 1.5;
  }
  
  @media (max-width: 768px) {
    .core-values-container {
      flex-direction: column;
      align-items: center;
    }
  
    .core-value {
      max-width: 90%;
    }
  }
  
  /* ✅ Solutions Section */
  .solutions-section {
    background-color: white;
    padding: 60px 20px;
    text-align: center;
  }
  
  .section-title {
    color: #1f80ff;
    font-size: 2.2rem;
    margin-bottom: 30px;
  }
  
  /* Tab Buttons */
  .tab-buttons {
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
  }
  
  .tab-btn {
    background-color: transparent;
    border: 2px solid #1f80ff;
    color: #1f80ff;
    padding: 10px 25px;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
  }
  
  .tab-btn.active,
  .tab-btn:hover {
    background-color: #1f80ff;
    color: white;
  }
  
  /* Tab Content */
  .tab-content {
    display: none;
  }
  
  .tab-content.active {
    display: block;
  }
  
  /* Grid Layout */
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 25px;
  }
  
  .grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 0px;
    aspect-ratio: 4 / 3;
  }
  
  .grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }
  
  .overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    color: white;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 10px;
    font-size: 1.25rem;
    font-weight: bold;
    transition: background 0.3s ease;
  }
  
  .grid-item:hover .overlay {
    background: rgba(0, 0, 0, 0.6);
  }
  
  .description {
    max-width: 800px;
    margin: 0 auto;
    color: #333;
    font-size: 1.05rem;
    line-height: 1.6;
  }
  
  /* Responsive Layout */
  @media (max-width: 992px) {
    .grid {
      grid-template-columns: repeat(2, 1fr);
    }
  
    .section-title {
      font-size: 2rem;
    }
  
    .tab-btn {
      font-size: 0.95rem;
      padding: 8px 20px;
    }
  }
  
  @media (max-width: 600px) {
    .tab-buttons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      max-width: 500px;
      margin: 0 auto 30px;
    }
  
    .tab-btn {
      width: 100%;
      font-size: 1rem;
      padding: 12px 0;
      border-radius: 10px;
    }
  
    .grid {
      grid-template-columns: 1fr;
    }
  
    .section-title {
      font-size: 1.7rem;
    }
  
    .description {
      font-size: 1rem;
      padding: 0 10px;
    }
  }
  
  /* ✅ Contact Section */
  .contact-section {
    background-color: white;
    padding: 100px 20px;
    text-align: center;
  }
  
  .contact-section h2 {
    color: #1f80ff;
    font-size: 2rem;
    margin-bottom: 20px;
  }
  
  .contact-section p {
    color: #000;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 40px auto;
    line-height: 1.6;
  }
  
  /* Form Container */
  .form-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    border-radius: 10px;
  }
  
  .form-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
  }
  
  @media (max-width: 768px) {
    .form-container {
      aspect-ratio: 3 / 5;
    }
  }
  
  @media (max-width: 480px) {
    .form-container {
      aspect-ratio: 2 / 3;
    }
  }
  
  /* ✅ Footer */
  footer {
    background-color: #1f80ff;
    color: white;
    padding: 15px 20px;
    border-top: 2px solid white;
  }
  
  .footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .footer-logo img {
    height: 60px;
    width: auto;
  }
  
  .footer-contact {
    text-align: right;
  }
  
  .footer-contact p {
    margin: 5px 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 400;
    opacity: 0.9;
  }
  
  .footer-contact i[data-lucide] {
    width: 18px;
    height: 18px;
    stroke: white;
    stroke-width: 2;
    opacity: 0.9;
  }
  
  @media (max-width: 600px) {
    .footer-content {
      flex-direction: column;
      text-align: center;
      gap: 10px;
    }
  
    .footer-contact {
      text-align: center;
    }
  }
  
  section {
    scroll-margin-top: 80px;
  }