:root {
    --bg-color: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #6366f1;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  }

  body {
    background-color: var(--bg-color);
    background-image:
      radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
      radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.15) 0px, transparent 50%);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
  }

  .container {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 48px 40px;
    width: 100%;
    max-width: 480px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.8s ease-out;
  }

  .icon-container {
    width: 72px;
    height: 72px;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    border: 1px solid rgba(99, 102, 241, 0.3);
  }

  .icon-container svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
  }

  h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.025em;
  }

  p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 1rem;
  }

  .status-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 32px;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  }

  .back-link:hover {
    color: var(--text-main);
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
  }

  .back-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
  }

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