body {
    background-color: #111;
    color: white;
    font-family: 'Segoe UI', sans-serif;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.back-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    padding: 10px 20px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 0 15px rgba(52, 152, 219, 0.3);
    transition: all 0.3s;
    z-index: 1000;
}
.back-btn:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(52, 152, 219, 0.5);
}

.dashboard {
    width: 400px;
    background: #1e1e1e;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.total-box { text-align: right; }
.total-box h2 { margin: 0; color: #2ecc71; }
.total-box small { color: #888; }

.controls { display: flex; gap: 10px; margin-bottom: 20px; }

button {
    flex: 1;
    padding: 8px;
    background: #333;
    border: none;
    color: #ccc;
    border-radius: 5px;
    cursor: pointer;
}

button.active, button:hover {
    background: #3498db;
    color: white;
}

.asset-card {
    display: flex;
    justify-content: space-between;
    padding: 15px;
    background: #252525;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 5px solid #555;
}

.green { border-left-color: #2ecc71; } /* Winner */
.red { border-left-color: #e74c3c; }   /* Loser */