/* تنظیم پس‌زمینه صفحه */
.page-bg {
    margin: 0;
    padding: 0;
    height: 80vh;
    background: url('../images/ChatGPT Image Dec 14, 2025, 08_59_53 PM.png') no-repeat center center fixed;
    background-size: cover;
    font-family: Arial, sans-serif;
}

/* مرکز کردن کارت */
.center-container {
    min-height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glass-card {
    width: 500px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}