:root {
      --brand-gradient: linear-gradient(90deg, #d17906, #be6c00, #007924);
      --primary-dark: #181c1f;
      --secondary-dark:#00244e;
      --primary-light:#fdf8f0;
      --secondary-light:#fbf2e1;
      --accent-green: #007924;
      --accent-orange: #d17906;
    }

    html {
      scroll-behavior: smooth;
      width: 100%;
    }

    body {
      font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
      background-color: #f8f9fa;
      width: 100%;
    }
    /* Navbar */
    header.navbar {
      background: var(--brand-gradient);
      box-shadow: 0px 10px 20px 0px rgba(0, 0, 0, 0.445);
      padding: 0.4rem 0;
    }
    
    header.navbar .navbar-brand {
      font-weight: 800;
      color: white !important;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    header.navbar .navbar-brand img {
      height: 45px;
      padding: 2px;
    }

    header.navbar .btn-login {
      border: 1px solid rgba(255,255,255,0.6);
      color: #f8f9fa;
      border-radius: 5px;
      padding: 0.4rem 1.5rem;
      transition: all 0.3s;
    }
    
    header.navbar .btn-login:hover {
      background: white;
      color: #be6c00;
    }

    #navMenu a {
      color: var(--primary-light) !important;
      font-weight: 700;
      text-decoration: none;
      transition: all 0.3s;
      display: inline-block;
      padding: 0.5rem 1rem;
    }
    #navMenu a:hover {
      text-decoration: underline;
      transform: scale(1.05);
    }

    @media (max-width: 576px) {
      header.navbar .navbar-brand {
        font-size: 0.9rem;
        gap: 5px;
      }
      header.navbar .navbar-brand img {
        height: 35px;
      }
    }

    @media (max-width: 400px) {
      header.navbar .navbar-toggler {
        padding: 0.25rem 0.5rem;
        font-size: 1rem;
        border-width: 1px;
      }
      header.navbar .navbar-toggler-icon {
        width: 1.2em;
        height: 1.2em;
      }
    }

    @media (max-width: 381px) {
      header.navbar .navbar-brand {
        font-size: 0.7rem;
        gap: 5px;
      }
    }

    @media (max-width: 334px) {
      .custom-text-hide {
        display: none;
      }
    }

    /* Hero Section */
    #welcome {
      position: relative;
      background: url('wall.jpeg') no-repeat center center;
      background-size: cover;
      color: white;
      min-height: 88.5vh;
      display: flex;
      align-items: center;
    }

    #welcome::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgb(1, 43, 0), rgba(6, 37, 0, 0.742),rgba(6, 37, 0, 0.64), rgba(0, 0, 0, 0));
      z-index: 0;
    }

    #welcome .content-wrapper {
      position: relative;
      z-index: 2;
      max-width: 700px;
      width: 100%;
    }

    #welcome .container {
      margin-left: 0;
      margin-right: auto;
      padding-left: 2rem;
      transform: translateY(-40px);
    }

    .hero-btn {
      background: var(--accent-orange);
      border: none;
      padding: 10px 10px;
      font-size: 1.15rem;
      font-weight: 600;
      border-radius: 10px;
      transition: transform 0.2s;
      max-width: 160px;
    }
    
    .hero-btn:hover {
      background: var(--accent-green);
      color: white;
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    }

    .scroll-indicator {
      background: var(--accent-green);
      border-radius: 100%;
      padding: 1px 8px;
      position: absolute;
      bottom: 10px;
      right: 20px;
      font-size: 2rem;
      color: var(--primary-light);
    }

    .bounce {
      animation: bounce 3s infinite;
    }

    @keyframes bounce {

      0%,20%,50%,80%,100% {
        transform: translateY(0);
      }

      40% {
        transform: translateY(-7px);
      }

      60% {
        transform: translateY(-4px);
      }
    }

    /* Data Overview Section */
    #data {
      padding: 2rem 0;
      background: var(--primary-light);
      scroll-margin-top: 68px; 
    }

    .custom-hover-line {
      position: relative;
      overflow: hidden;
    }

    .custom-hover-line::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 5px;
      background-color: transparent;
      transition: background-color 0.3s ease;
    }

    .custom-hover-line:hover::after {
      background-color: var(--accent-orange);
    }

    .feature-card {
      border: none;
      color: var(--secondary-dark);
      border-radius: 12px;
      padding: 2rem;
      height: 100%;
      box-shadow: 0 4px 6px rgba(0,0,0,0.04);
      transition: all 0.3s ease;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 20px rgba(0,0,0,0.08);
      background: rgba(253, 248, 240, 0.2);
    }

    .feature-icon {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      background: var(--accent-orange) ;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    hr{
      border: none;
      padding: 0;
      margin: 0;
      height: 2px;
      background-color: var(--accent-green);
    }

    /* Documentation */
    #documentation {
      background: var(--primary-light);
      padding: 2rem 0;
      scroll-margin-top: 68px; 
    }

    .doc-card {
      border: none;
      color: var(--primary-dark);
      border-radius: 3px 10px 10px 3px;
      padding: 2rem;
      height: 100%;
      box-shadow: 0 4px 6px rgba(0,0,0,0.04);
      border-left: 4px solid var(--accent-green);
      transition: 0.3s ease;
    }

    .doc-card:hover{
      background: rgba(0, 0, 0, 0.03);
      transform: scale(1.02);
    }

    .doc-card h3 {
      color: var(--secondary-dark);
      font-weight: 700;
      font-size: 1.5rem;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .doc-card h3 i {
      color: var(--accent-green);
      font-size: 1.5rem;
    }
    
    .doc-card p{
      color: var(--secondary-dark);
    }

    .doc-list {
      list-style: none;
      padding-left: 0;
      margin-top: 1rem;
    }

    .doc-list li {
      position: relative;
      padding-left: 1.5rem;
      margin-bottom: 0.5rem;
      color: var(--primary-dark);
    }

    .doc-list li::before {
      content: "\f058";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      left: 0;
      top: 2px;
      color: var(--accent-green);
      font-size: 0.9rem;
    }

    .doc-list strong {
      color: var(--accent-green);
    }

    /* Gallery */
    #site-gallery {
      padding: 2rem 0;
      background: #fff;
      scroll-margin-top: 68px;
    }

    .gallery-grid div {
      transition: transform 0.5s ease-in-out;
      filter: brightness(0.85);
    }
    
    .gallery-grid div:hover {
      transform: scale(1.02);
      filter: brightness(1.1);
    }

    .gallery-img {
      background: rgba(0, 36, 78, 0.9);
    }

    /* Modal */
    .modal-content {
      border: none;
      border-radius: 15px;
      overflow: hidden;
    }

    .modal-header {
      background: var(--brand-gradient);
      color: white;
      border-bottom: none;
    }

    .modal-header .btn-close {
      filter: invert(1);
    }

    .nav-tabs .nav-link {
      color: var(--primary-dark);
      font-weight: 600;
    }

    .nav-tabs .nav-link.active {
      border: none;
      color: var(--accent-green);
      border-bottom: 3px solid var(--accent-green) !important;
    }

    footer.footer {
      background: linear-gradient(90deg,#d17906,#be6c00,#007924);
      color: #f8f9fa;
      text-align: center;
      padding: 1rem 0;
      width: 100%;
      bottom: 0;
      left: 0;
      z-index: 10;
    }