:root{
    --brand-1:#2563eb;
    --brand-2:#9333ea;
    --muted:#64748b;
    --bg:#f8fafc;
  }

  body {
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Poppins", sans-serif;
    overflow: hidden;
  }

  .error-box {
    background:#fff;
    padding: 60px 40px;
    border-radius: 24px;
    text-align:center;
    max-width: 650px;
    width:100%;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    animation: fadeIn 1.1s ease-out;
    position: relative;
  }

  /* Floating big 404 text */
  .code {
    font-size: 120px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
  }

  .subtitle {
    font-size: 20px;
    color: var(--muted);
    margin-bottom: 20px;
  }

  .search-box input {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 15px;
  }

  .search-box input:focus {
    border-color: var(--brand-1);
  }

  .floating-shape {
    position:absolute;
    width:120px;
    height:120px;
    background:rgba(255,255,255,0.12);
    border-radius:50%;
    top:-40px; left:-40px;
    animation: float 6s infinite ease-in-out;
  }

  .floating-shape-2 {
    position:absolute;
    width:180px;
    height:180px;
    background:rgba(255,255,255,0.08);
    border-radius:50%;
    bottom:-60px; right:-50px;
    animation: float 8s infinite ease-in-out reverse;
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
  }

  .btn-brand {
    background: var(--brand-1);
    border-radius: 12px;
    padding: 12px 24px;
    color: #fff;
    font-weight:600;
  }
  .btn-brand:hover {
    background: var(--brand-2);
    color:#fff;
  }

  .icon {
    font-size:34px;
    margin-bottom:14px;
    color:var(--brand-1);
  }