* {
    box-sizing: border-box;
    font-family: Vazirmatn, sans-serif;
}

body {
    margin: 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    direction: rtl;
}

/* کانتینر */
.auth-container {
    width: 100%;
    padding: 20px;
}

/* کارت */
.auth-card {
    background: #fff;
    border-radius: 14px;
    padding: 25px 20px;
    max-width: 360px;
    margin: auto;
    box-shadow: 0 15px 40px rgba(0,0,0,.2);
}

/* تیتر */
.auth-card h2 {
    margin-bottom: 25px;
    text-align: center;
    font-size: 22px;
}

/* فرم */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 14px;
    margin-bottom: 6px;
    color: #444;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
    font-size: 15px;
}

/* دکمه */
.btn-login {
    width: 100%;
    padding: 13px;
    border: none;
    border-radius: 12px;
    background: #667eea;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

.btn-login:active {
    transform: scale(0.98);
}

/* دسکتاپ (اختیاری) */
@media (min-width: 768px) {
    .auth-card {
        padding: 30px;
    }
}