body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a0a0a;
    color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 1.5rem;
    background: #141414;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0,0,0,0.75);
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    color: #00ffc3;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background-color: #232323;
}

th, td {
    padding: 16px;
    text-align: center;
    border-bottom: 1px solid #333;
    font-size: 1rem;
}

th {
    color: #00ffc3;
    text-transform: uppercase;
}

.buy {
    background-color: #093d25;
    color: #00ff95;
}

.wait {
    background-color: #2d2d2d;
    color: #ffd966;
}

.sell {
    background-color: #3d0f0f;
    color: #ff6f6f;
}

.bitcoin {
    background-color: #ff9900;
    color: #fff;
}

.xrp {
    background-color: #00b5e2;
    color: #fff;
}

.solana {
    background-color: #3dbf70;
    color: #fff;
}

.hbar {
    background-color: #5f1f8e;
    color: #fff;
}

@media (max-width: 768px) {
    table, thead, tbody, th, td, tr {
        display: block;
    }
    thead {
        display: none;
    }
    td {
        position: relative;
        padding-left: 50%;
        text-align: left;
        border: none;
        border-bottom: 1px solid #444;
    }
    td::before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 50%;
        padding-left: 16px;
        font-weight: bold;
        text-transform: uppercase;
        color: #888;
    }
}

/* Hover effects */
tr:hover {
    background-color: #262626;
    transition: background 0.3s;
}

/* Smooth transitions */
td, th {
    transition: all 0.3s ease;
}