* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    body {
      background: linear-gradient(135deg, #0d1117, #161b22);
      color: #c9d1d9;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 2rem;
    }

    .container {
      max-width: 500px;
      width: 100%;
      text-align: center;
    }

    h1 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      background: linear-gradient(90deg, #58a6ff, #8e96f0);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .subtitle {
      color: #8b949e;
      margin-bottom: 2rem;
      font-size: 1.1rem;
    }

    .search-container {
      display: flex;
      margin-bottom: 2rem;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      border-radius: 8px;
      overflow: hidden;
    }

    #username {
      flex: 1;
      padding: 1rem 1.5rem;
      background: #21262d;
      border: 1px solid #30363d;
      color: #c9d1d9;
      font-size: 1rem;
      outline: none;
    }

    #username:focus {
      border-color: #58a6ff;
    }

    button {
      background: #238636;
      color: white;
      border: none;
      padding: 0 1.5rem;
      cursor: pointer;
      font-weight: 600;
      transition: background 0.2s;
    }

    button:hover {
      background: #2ea043;
    }

    #result {
      background: #21262d;
      border-radius: 12px;
      padding: 2rem;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
      margin-top: 1.5rem;
      display: none;
    }

    .profile-header {
      display: flex;
      align-items: center;
      margin-bottom: 1.5rem;
      text-align: left;
    }

    .avatar {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      border: 3px solid #30363d;
      margin-right: 1.5rem;
    }

    .user-info h2 {
      font-size: 1.5rem;
      margin-bottom: 0.3rem;
    }

    .username {
      color: #58a6ff;
      font-size: 1.1rem;
      margin-bottom: 0.3rem;
    }

    .user-id {
      color: #8b949e;
      font-size: 0.9rem;
      margin-bottom: 0.5rem;
    }

    .bio {
      color: #8b949e;
      margin-bottom: 1.5rem;
      line-height: 1.5;
    }

    .stats {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }

    .stat {
      text-align: center;
      background: #0d1117;
      padding: 0.8rem;
      border-radius: 8px;
      flex: 1;
    }

    .stat-value {
      font-size: 1.5rem;
      font-weight: 700;
      color: #58a6ff;
    }

    .stat-label {
      font-size: 0.8rem;
      color: #8b949e;
      margin-top: 0.3rem;
    }

    footer {
      margin-top: 2rem;
      text-align: center;
      color: #8b949e;
      font-size: 0.9rem;
    }

    @media (max-width: 600px) {
      .profile-header {
        flex-direction: column;
        text-align: center;
      }
      
      .avatar {
        margin-right: 0;
        margin-bottom: 1rem;
      }
    }