body {
    font-family: "Poppins", sans-serif;
    margin: 0;
    background: #0b0e11;
    color: #e4e4e4;
  }
  
  .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #111418;
    padding: 1rem 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  }
  
  .logo {
    font-size: 1.4rem;
    font-weight: 600;
  }
  
  .main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
  }
  
  .main-nav a {
    color: #e4e4e4;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
  }
  
  .main-nav a:hover {
    color: #00b894;
  }
  
  .profit-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem;
    background: #161a1f;
    margin: 0;
    box-shadow: inset 0 -1px 0 rgba(255,255,255,0.05);
    transition: all 0.3s ease;
  }
  
  .profit-box {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 1rem 2rem;
    background: #1c2128;
    border-radius: 12px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: transform 0.3s ease;
  }
  
  .profit-box:hover {
    transform: scale(1.02);
  }
  
  .profit-box h3 {
    margin: 0;
    color: #bbb;
    font-size: 0.95rem;
  }
  
  .profit-box p {
    margin: 0.3rem 0 0;
    font-size: 1.2rem;
    font-weight: 600;
  }
  
  main.content {
    padding: 2rem;
  }
  
  .card {
    background: #161a1f;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.4);
  }
  
  .card h2 {
    margin-bottom: 1rem;
    color: #e4e4e4;
  }
  
  table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
  }
  
  th, td {
    padding: 0.8rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  th {
    background: #1c2128;
  }
  
  .profit {
    color: #00e676;
  }
  
  .loss {
    color: #ff5252;
  }
  
  .summary-row {
    font-weight: 600;
    background: #1e242c;
  }