:root {
      --primary-color: #1877f2;
      --background-color: #E5E4E2;
      --text-color: #1c1e21;
      --subtext-color: #606770;
      --white: #ffffff;
      --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    body.dark {
      --background-color: #18191a;
      --text-color: #e4e6eb;
      --subtext-color: #b0b3b8;
      --white: #242526;
      --shadow: 0 2px 8px rgba(255, 255, 255, 0.05);
    }

    body {
      margin: 0;
      font-family: 'Roboto', Arial, sans-serif;
      background-color: var(--background-color);
      color: var(--text-color);
      transition: background-color 0.3s, color 0.3s;
    }

    header {
      background-color: var(--primary-color);
      color: var(--white);
      padding: 15px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .header-content {
      display: flex;
      align-items: flex-start;
      gap: 5px;
      font-size: 24px;
      font-weight: 400;
    }

    .header-content span {
      margin-top: 10.5px;
    }

    .header-content a {
      display: inline-flex;
      text-decoration: none;
      color: var(--white);
      align-items: center;
    }

    .site-logo {
      height: 50px;
      width: auto;
      border-radius: 6px;
    }

    .theme-toggle {
      background: none;
      border: none;
      color: var(--white);
      font-size: 20px;
      cursor: pointer;
      transition: color 0.3s ease;
    }

    .theme-toggle:hover {
      color: #ffdd57;
    }

    .container {
      max-width: 1100px;
      margin: 20px auto 40px;
      padding: 0 20px;
    }

    .gallery-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 15px;
      text-align: center;
      color: var(--primary-color);
    }

    .gallery-images {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
      gap: 10px;
      justify-items: center;
    }

    .gallery-images img {
      width: 100%;
      height: auto;
      object-fit: contain;
      border-radius: 6px;
      cursor: pointer;
      transition: transform 0.3s ease;
    }

    .gallery-images img:hover {
      transform: scale(1.03);
    }

    /* Lightbox Modal */
    #lightbox {
      position: fixed;
      display: none;
      justify-content: center;
      align-items: center;
      z-index: 9999;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.95);
      flex-direction: column;
    }

    .lightbox-image {
      max-width: 90%;
      max-height: 90%;
      border-radius: 10px;
      box-shadow: 0 0 20px #000;
    }

    .close, .prev, .next {
      position: absolute;
      color: #fff;
      font-size: 40px;
      font-weight: bold;
      cursor: pointer;
      user-select: none;
    }

    .close {
      top: 20px;
      right: 40px;
    }

    .prev {
      left: 30px;
      top: 50%;
      transform: translateY(-50%);
    }

    .next {
      right: 30px;
      top: 50%;
      transform: translateY(-50%);
    }

    .close:hover, .prev:hover, .next:hover {
      color: #ffdd57;
    }