body {
    margin: 0;
    font-family: "Segoe UI", sans-serif;
    background: linear-gradient(135deg,#4e73df,#1cc88a);
    padding: 15px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

h2, h3 {
    margin-top: 0;
}

button {
    width: 100%;
    padding: 12px;
    background: #4e73df;
    border: none;
    color: white;
    border-radius: 10px;
    font-size: 16px;
    transition: 0.3s;
}

button:hover {
    background: #2e59d9;
}

input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}

.stat-card {
    background: rgba(255,255,255,0.9);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
}