* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: 'Segoe UI', sans-serif;
      background-color: #f9fbfc;
    }

    header {
      background-color: white;
      border-bottom: 1px solid #e2e8f0;
      padding: 12px 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .logo {
      color: #2563eb;
      font-weight: 600;
      font-size: 16px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    nav {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-top: 8px;
    }

    .generate-btn {
      background-color: #007bff;
      color: white;
      border: none;
      padding: 8px 16px;
      border-radius: 6px;
      font-size: 14px;
      cursor: pointer;
    }

    .container {
      max-width: 600px;
      margin: 60px auto;
      padding: 0 20px;
      text-align: center;
    }

    h1 {
      font-size: 20px;
      font-weight: 600;
      color: #0f172a;
      margin-bottom: 24px;
    }

    input {
      width: 100%;
      padding: 12px;
      border: 1px solid #d1d5db;
      border-radius: 6px;
      font-size: 14px;
      color: #1f2937;
      margin-bottom: 12px;
    }

    button:not(.generate-btn) {
      background-color: #007bff;
      color: white;
      padding: 10px 20px;
      border: none;
      border-radius: 6px;
      font-size: 14px;
      cursor: pointer;
      margin-bottom: 24px;
      width: 100%;
    }

    .image-box {
      border: 2px dashed #cbd5e1;
      padding: 32px;
      border-radius: 8px;
      background-color: #ffffff;
      min-height: 200px;
    }

    img {
      max-width: 100%;
      max-height: 400px;
      margin: 0 auto;
    }

    @media (max-width: 600px) {
      header {
        flex-direction: column;
        align-items: flex-start;
      }

      .generate-btn {
        margin-left: auto;
      }

      h1 {
        font-size: 18px;
      }

      .image-box {
        padding: 20px;
      }
    }