body {
    font-family: Arial;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    text-align: center;
}

.container {
    margin-top: 80px;
}

/* .upload-box {
    border: 2px dashed white;
    padding: 40px;
    cursor: pointer;
    margin-bottom: 20px;
} */

.btn {
    background: #ff7a18;
    padding: 10px 20px;
    color: white;
    border: none;
    text-decoration: none;
    border-radius: 8px;
    display: inline-block;
}

.big {
    margin-bottom: 20px;
    display: inline-block;
}

.grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.card {
    background: white;
    color: black;
    padding: 20px;
    margin: 10px;
    border-radius: 10px;
    width: 200px;
}

.spinner {
    border: 6px solid #ccc;
    border-top: 6px solid #ff7a18;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: auto;
}

.hidden {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}