:root {
      --bg: #0f0f0f;
      --fg: #ffffff;
      --accent: #87ceeb;
      --secondary: #333;
    }
    body.light-mode {
      --bg: #ffffff;
      --fg: #000000;
      --accent: #87ceeb;
      --secondary: #f0f0f0;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: var(--bg);
      color: var(--fg);
      line-height: 1.6;
      overflow-x: hidden;
      transition: background 0.3s, color 0.3s;
    }
    .theme-toggle {
      position: fixed;
      top: 1rem;
      right: 1rem;
      padding: 0.5rem;
      background: var(--bg);
      color: #000;
      border: none;
      border-radius: 50%;
      font-size: 1.2rem;
      cursor: pointer;
      z-index: 1000;
    }
    header.hero {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      background: url('../img/index-bg.png') center/cover no-repeat, radial-gradient(circle at top left, var(--bg), var(--bg));
      background-blend-mode: overlay;
      background-attachment: fixed;
      text-align: center;
      padding: 2rem;
      position: relative;
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0,0,0,0.3);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 3rem;
      margin-bottom: 1rem;
      animation: fadeInUp 1s ease-out;
      color: var(--accent);
    }
    .hero-content p {
      font-size: 1.25rem;
      margin-bottom: 2rem;
      color: var(--secondary);
    }
    .scroll-indicator {
      font-size: 2rem;
      margin-top: 1.5rem;
      animation: bounce 2s infinite;
      color: var(--accent);
    }
    .cta {
      display: inline-block;
      padding: 0.75rem 1.5rem;
      background: var(--accent);
      color: #000;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background 0.3s;
      margin-top: 1.5rem;
    }
    .cta:hover {
      color: var(--fg);
    }
    .services {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      padding: 4rem 2rem;
      background-color: var(--secondary);
      transition: background 0.3s;
    }
    .service {
      background: #1a1a1a;
      padding: 2rem;
      border-radius: 12px;
      opacity: 0;
      transform: translateY(20px);
      transition: transform 0.5s ease-out, opacity 0.5s ease-out;
    }
    .service:hover {
      transform: translateY(-5px) scale(1.02);
      box-shadow: 0 8px 20px rgba(135, 206, 235, 0.2);
    }
    .service p {
      margin-top: 0.75rem;
    }
    .service a {
      color: var(--accent);
    }

    .more {
      margin-top: 0.75rem;
    }
    .read-more {
      margin-top: 0.5rem;
      background: none;
      border: 1px solid #00bfff;
      padding: 0.5rem 1rem;
      cursor: pointer;
      color: inherit;
      border-radius: 5px;
      transition: background 0.3s;
    }
    .read-more:hover {
      background: #00bfff;
      color: #fff;
    }
    #about{
      display: inline-grid;
      align-items: center;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      padding: 4rem 2rem;
      background-color: var(--bg);
      transition: background 0.3s;
    }
    #about a{
      color: var(--bg);
    }
    #about a:hover{
      color: var(--fg);
    }
    #about-simo-img{
      border-radius: 50%;
      float: right;
    }
    body.light-mode .service {
      background: #fff;
      color: #000;
    }
    .service.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .service h2 {
      color: var(--accent);
      margin-bottom: 0.5rem;
    }
    .contact-cta {
      text-align: center;
      padding: 4rem 2rem;
    }
    .section-transition {
      transition: transform 1s ease-in-out, opacity 1s ease-in-out;
      will-change: transform, opacity;
    }
    footer {
      text-align: center;
      padding: 1rem;
      background: #111;
      color: #666;
    }
    @keyframes fadeInUp {
      from {
        transform: translateY(20px);
        opacity: 0;
      }
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }
    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
      }
      40% {
        transform: translateY(-7px);
      }
      60% {
        transform: translateY(-5px);
      }
    }