body {
    margin: 0;
    font-family: "Vazir", Tahoma, sans-serif;
    background-color: #f7f9fc;
    color: #2c3e50;
    direction: rtl;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #1e2a38;
    color: white;
    padding: 1rem;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
}

    .logo img {
        width: 50px;
        height: 50px;
    }

.menu-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    display: none;
}

.nav {
    display: flex;
    gap: 1rem;
    transition: max-height 0.4s ease;
}

    .nav a {
        color: white;
        text-decoration: none;
        padding: 0.5rem 1rem;
        border-radius: 10px;
        transition: background 0.3s;
    }

        .nav a:hover {
            background-color: #34495e;
        }

/* دکمه‌ها */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 30px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
}

.login {
    background-color: #3498db;
}

.register {
    background-color: #2ecc71;
}

.login:hover {
    background-color: #2980b9;
}

.register:hover {
    background-color: #27ae60;
}

/* ---- استایل مخصوص موبایل ---- */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .menu-toggle {
        display: block;
    }

    .nav {
        flex-direction: column;
        width: 100%;
        max-height: 0;
        overflow: hidden;
    }

        .nav.active {
            max-height: 500px;
            padding-top: 1rem;
        }

        .nav a, .nav a.btn {
            padding: 0.8rem !important;
            border-top: 1px solid rgba(255,255,255,0.1);
            border-bottom: 1px solid rgba(255,255,255,0.1);
            width: 95%;
            margin: 0.1rem auto;
            text-align: center;
            font-size: 1.1rem;
            display: block;
        }
            /* تاکید بر نمایش صحیح دکمه‌های ورود و ثبت‌نام */
            .nav a.login, .nav a.register {
                width: 95% !important;
                display: block !important;
                margin: 0.4rem auto !important;
                font-size: 1.12rem !important;
                border-radius: 20px;
            }
}